A fingerprint sensor comprising: a plurality of sensing structures arranged in a sensing plane for capacitively sensing a fingerprint; a charge-modification arrangement including: a plurality of charge-modification structures arranged in relation to the plurality of sensing structures to form a plurality of capacitors; and charge-modification circuitry coupled to each charge-modification structure in the plurality of charge-modification structures, and controllable to provide voltage signals to the plurality of charge-modification structures, to thereby modify amounts of charge carried by the sensing structures; and measurement circuitry coupled to the plurality of sensing structures for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of sensing structures and the finger, wherein the charge-modification arrangement is configured to provide different charge modification for different sensing structures in the plurality of sensing structures.
A method of a biometric recognition system of performing real-eye detection and associated biometric recognition system are disclosed. The method comprises capturing at least one image comprising a representation of an eye of the individual, which image is captured utilizing polarized light reflected at the eye and received at a polarization-sensitive camera capturing said image, wherein a polarization configuration is selected which produces an iso-chrome pattern of the representation of the eye in the captured image, detecting, from the representation, birefringent features of a cornea of the individual, aligning the detected birefringent cornea features with birefringent cornea features of an expected eye representation, determining, by matching the detected birefringent cornea features with the expected birefringent cornea features, whether the birefringent features are correctly rendered in the captured image, and if so determining that the eye is a real eye.
G06V 40/40 - Spoof detection, e.g. liveness detection
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06V 10/24 - Aligning, centring, orientation detection or correction of the image
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
G06V 40/18 - Eye characteristics, e.g. of the iris
3.
A METHOD OF MANAGING FINGERPRINT DATA AT AN ELECTRONIC DEVICE
The present disclosure generally relates to a method of managing fingerprint data at an electronic device, the electronic device for example being at least one of smart card, a mobile phone, and a fingerprint module. The electronic device is provided with a composite fingerprint template holding distinguishable information for a plurality of different fingers. The present disclosure also relates to a corresponding electronic device and to a computer program product.
A smartcard comprising: a fingerprint sensor module; a microcontroller module; a contact plate comprising externally accessible contacts configured to communicate with a terminal, the contact plate being galvanically connected to the microcontroller module; and an inductive voltage boost converter comprising an inductor arranged in series with a diode and a switch configured to selectively connect a point between the inductor and the diode to ground, wherein the inductor is an inductive coil in at least one conductive layer of the smartcard and wherein the diode and the switch are arranged in an integrated circuit module located in the smartcard and connected to the inductor
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
H02M 3/00 - Conversion of DC power input into DC power output
H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
5.
REAL-EYE DETECTION USING LIGHT OF DIFFERENT POLARIZATION ROTATIONS
A method of a biometric recognition system of performing real-eye detection, and a biometric recognition system performing the method. In an aspect, a method of a biometric recognition system of performing real-eye detection is provided. The method comprises capturing a plurality of images comprising a representation of an eye of the individual, which images are captured utilizing polarized light reflected at the eye and received at a polarization-sensitive camera capturing said images, wherein for each image being captured a different polarization rotation is selected, detecting, from the representation in each captured image, birefringent features of a cornea of the individual, and determining, by matching the detected birefringent cornea features of the captured images with the expected birefringent cornea features, whether the detected birefringent cornea features are correctly rendered in at least one of the captured images; and if so determining that the eye is a real eye.
A method of a biometric recognition system of performing real-eye detection, and a biometric recognition system performing the method. The method includes capturing a first image, comprising a representation of an iris, that is captured utilizing polarized light reflected at the iris and received at a polarization-sensitive camera, the first image being captured with a first polarization configuration being applied, and capturing a second image, comprising a representation of the iris, that is captured utilizing polarized light reflected at the iris and received at a polarization-sensitive camera, the second image being captured with a second polarization configuration being applied. The method further comprises detecting, from the representations of the iris of the first and second images, whether birefringent features of a cornea are correctly rendered in both the first and the second image, and if so determining that the iris originates from a real eye.
An enrollment assistance device, for facilitating biometric enrollment of a user of a smartcard including a biometric arrangement and a power and communication interface, the enrollment assistance device comprising: a carrier having a first side and a second side opposite the first side; and an electronic label comprising: a card interface portion including an electrically conducting structure; a power supply portion including an electrically conducting structure for receiving electric power from a power source; and electrical circuitry connecting the electrically conducting structure of the power supply portion with the electrically conducting structure of the card interface, wherein the electronic label is folded around an edge of the carrier in such a way that the card interface portion of the electronic label is attached to the first side of the carrier, and the power supply portion of the electronic label is attached to the second side of the carrier.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
The present disclosure relates to a method of authenticating an individual using biometric information of an eye of the individual, and a biometric recognition system performing the method. In an aspect, a method of a biometric recognition system of authenticating an individual using biometric information of an eye of the individual is provided. The method comprises capturing at least one image comprising a representation of an iris of the individual, which at least one image is captured utilizing polarized light reflected at the iris and received at a polarization-sensitive camera capturing said at least one image, detecting, from the representation, birefringent features of a cornea of the individual, comparing the detected birefringent cornea features with previously enrolled birefringent cornea features and if there is a match authenticating the individual.
In an aspect, a method of a fingerprint sensing system (10) is provided comprising a processing unit (11) and a fingerprint sensor (2) is provided for enrolling a fingerprint template of a user by forming the enrolled fingerprint template from sequentially enrolled fingerprint sub-templates captured based on finger touch interactions and finger swipe interactions with the sensor (2). The method comprises advancing (S110), for each added fingerprint sub-template, a touch progress metric or a swipe progress metric depending on whether the finger contact relates to a touch interaction or a swipe interaction and computing a total progress based on a combination of the touch progress metric and the swipe progress metric, and determining (S111) that an enrolment completion criterion is complied with based on the total progress, wherein a final fingerprint template is created.
An optical fingerprint sensor configured to be arranged under an at least partially transparent display panel comprises an array of color controllable light sources. The optical fingerprint sensor comprises an image sensor comprising a photodetector pixel array; an array of microlenses arranged under the color controllable light sources; a color filter layer arranged under the array of microlenses comprising alternating filter element types of different colors for adjacent subsets of pixels in the photodetector pixel array. The color controllable light sources are controllable, in response to a first finger condition, to emit light of uniform color being a mix of the colors of the filter elements, and in response to a second finger condition, to emit a color pattern including the colors of the filter elements, wherein groups of color controllable light sources are controlled to emit light corresponding to a color of the filter elements.
An enrollment assistance device (11) comprising a carrier (15) with a first surface portion (17) for a user device (13), and a second surface portion (19) for a contactless smartcard (1); first and second electrical conductors (30, 36) together forming first and second bifilar coils (42, 44). The bifilar coils are configured to form a first wireless power transfer link with the wireless power transfer arrangement of the user device when the user device is arranged on the first surface portion of the carrier, and a second wireless power transfer link with the wireless power transfer arrangement of the contactless smartcard when the contactless smartcard is arranged on the second surface portion of the carrier.
An enrollment assistance device (11 ) comprising a carrier (15) with a first surface portion (17) for a user device (13), and a second surface portion (19) for a contactless smartcard (1 ); first and second inductive coils (20, 32) and an electrical conductor (34) encircling the inductive coils. The inductive coils are configured to form a first wireless power transfer link with the wireless power transfer arrangement of the user device when the user device is arranged on the first surface portion of the carrier, and a second wireless power transfer link with the wireless power transfer arrangement of the contactless smartcard when the contactless smartcard is arranged on the second surface portion of the carrier.
An iris recognition system and method configured to reduce impact of impairment data in captured iris images. The system comprises a camera configured to capture first and second images of a user's iris. A processing unit of the system is configured to cause the user to change gaze between the capturing of the first and second images, create a representation of each of the first and second iris images, where each spatial sample of an image sensor of the camera capturing the iris images is gaze-motion compensated to correspond to a same position on the iris for the sequentially captured first and second iris images, thereby causing the iris to be fixed in the representations while any impairment data will move with the change in gaze of the user, and to filter the moving impairment data from at least one of the representations of the first and second iris images.
The present disclosure relates to a method of testing a smartcard (11), a smartcard test system (50), and a smartcard (11). In an aspect, a smartcard (11) is provided comprising at least one open signal wire loop (15) arranged on an inlay sheet (21) of the smartcard (11), and a wireless communication-incapable component (12) mounted to the at least one open signal wire loop (15), a first pad (17) of the wireless communication-incapable component (12) being set into contact with one end of the at least one open signal wire loop (15) while a second pad (18) of the wireless communication-incapable component (12) being set into contact with another end of the at least one open signal wire loop (15), thereby having the wireless communication-incapable component (12) close the at least one open signal wire loop (15) and form a closed signal wire loop.
G01R 31/315 - Contactless testing by inductive methods
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
15.
SMARTCARD COMPRISING FINGERPRINT SENSING DEVICE AND MANUFACTURING METHOD THEREOF
The present invention relates to a smartcard comprising a fingerprint sensing device laminated between a first card substrate layer and a second card substrate layer, the fingerprint sensing device including electrically conductive pads; a connector module arranged in a cavity of the smartcard, separated from the fingerprint sensing device by the second card substrate layer, the connector module including connecting pads; and wherein the smartcard further comprises electrically conductive structures protruding through the second card substrate layer, and electrically connecting the electrically conductive pads of the fingerprint sensing device and the connecting pads of the connector module.
H02J 50/50 - Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
16.
ENROLLMENT ASSISTANCE DEVICE AND METHOD OF BIOMETRICALLY ENROLLING A USER
An enrollment assistance device, for facilitating biometric enrollment of a user of a smartcard including a biometric arrangement, a wireless power receiving arrangement, and contact pads, the enrollment assistance device comprising: a plurality of contact structures arranged to make electrical contact with corresponding contact pads of the smartcard; user interface circuitry electrically connected to a set of contact structures in the plurality of contact structures, the user interface circuitry being configured to: receive power from the smartcard via the set of contact structures; receive, via the set of contact structures, a signal from the smartcard indicating a level of completion of the biometric enrollment; and provide user feedback concerning the biometric enrollment, depending on the level of completion of the biometric enrollment indicated by the signal from the smartcard.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
G06Q 20/40 - Authorisation, e.g. identification of payer or payee, verification of customer or shop credentialsReview and approval of payers, e.g. check of credit lines or negative lists
17.
FINGERPRINT SENSING MODULE AND METHOD FOR MANUFACTURING THE FINGERPRINT SENSING MODULE
The present disclosure relates to a fingerprint sensing module (100, 200) comprising: a substrate (102); a spacer (104) arranged on the substrate, the spacer having a smaller area than an area of the substrate; and a flexible TFT-film (106) comprising a fingerprint sensing matrix (108), the flexible TFT- film being partially arranged on the spacer, wherein a portion (110) of the flexible TFT-film outside of the spacer is curved towards the substrate to form a mechanical contact with the substrate.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
An enrollment assistance device comprising a carrier with a first surface portion for a user device, and a second surface portion for a contactless smartcard; a first wireless power transfer arrangement supported by the carrier and arranged in the first surface portion of the carrier; a second wireless power transfer arrangement supported by the carrier and arranged in the second surface portion of the carrier; and a conductor arrangement supported by the carrier and conductively connecting the first wireless power transfer arrangement and the second wireless power transfer arrangement.
A fingerprint sensor module comprising: a carrier comprising a first recessed portion on a first side of the carrier; a fingerprint sensing device arranged in the first recessed portion of the carrier, the fingerprint sensing device comprising a fingerprint sensing surface; a second recessed portion on a second side of the carrier, opposite the first side, and at an edge of the carrier and a connection pad arranged in the second recessed portion; and an electrical connection through the carrier connecting the fingerprint sensing device to the connection pad.
A fingerprint sensor module for a smartcard, the fingerprint sensor module comprising: a first substrate; a fingerprint sensing device mounted on a first side of the first substrate, the fingerprint sensing device having a sensing surface facing in a first direction of the fingerprint sensor module; a second substrate arranged on a second side of the first substrate, opposite the first side, the second substrate comprising a contact area having a plurality of terminal contact pads configured to connect the fingerprint sensor module to an external terminal, the terminal contact pads facing a second direction of the fingerprint sensor module, opposite the first direction; and wherein the contact area comprises at least one finger contact pad configured to provide a potential to a finger in contact with the finger contact pad during fingerprint image capture.
G06K 19/073 - Special arrangements for circuits, e.g. for protecting identification code in memory
H04B 5/73 - Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for taking measurements, e.g. using sensing coils
21.
ENROLLING BIOMETRICS WITH MUTUAL TRUST THROUGH 3RD PARTY
The present disclosure relates to a method of an access point of enrolling biometric data of an individual and an access point performing the method. In an aspect, a method of an access point is provided of enrolling biometric data of an individual. The method comprises establishing a trusted communication channel with a user device of the individual, the trust being ensured by a trusted 3rd party and capturing the biometric data of the individual, wherein the biometric data is enrolled with the access point.
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
Level shifting circuitry comprising toggle circuitry having a toggle input and a toggle output, the toggle circuitry being configured to alternate an output voltage at the toggle output between a logic low and a logic high for the second voltage domain in response to a voltage at the toggle input becoming lower than a predefined threshold voltage; a reset switch coupled between a first terminal of the level shifting circuitry and the toggle input; a resistive element connected in parallel with the reset switch; and pull-down circuitry coupled between the toggle input and a second terminal of the level shifting circuitry, and having an input for receiving a control signal, the pull- down circuitry being configured to open a current path from the toggle input through the pull-down circuitry in response to transition of the control signal from low to high and from high to low.
H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
23.
OPTICAL SENSOR FOR PROXIMITY AND AMBIENT LIGHT DETECTION UNDER DISPLAY
An optical sensor (100) for proximity and ambient light detection under a display (104), the optical sensor (100) comprising: a matrix (108) of photosensitive pixels, wherein a first set (200) of pixels covered by bandpass filters in the visible range of light, the first set (200) of pixels are configured for ambient light detection, wherein at least one subset of the first set (200) of pixels is covered by a bandpass filter that excludes at least part of an emission spectrum from the display (104), and wherein a second set (300) of pixels is arranged along a perimeter surrounding the first set (200) of pixels, the second set (300) of pixels being covered by an IR-bandpass filter, and an IR-light source (110) for emitting light towards the display (104) for reflection by an object (111) on the opposite side of the display (104), wherein the second set (300) of pixels are configured to detect the reflected light for object (111) proximity detection.
The present disclosure relates to a biometric imaging device (100, 200, 300, 400) comprising: a flexible reel-to-reel substrate (102) comprising a plurality of through-openings (103); a thin-film transistor, TFT, circuit (104) attached to a first side (109) of the reel-to-reel substrate, the TFT-circuit comprising a capacitive fingerprint sensing device (106) having a sensing side (108) on a first side thereof, facing away from the reel-to-reel substrate (102), the capacitive fingerprint sensing device comprising electrically conductive contact pads (110) on a second side (112) thereof, facing the reel-to-reel substrate and aligned with the openings of the reel-to-reel substrate; a printed circuit board, RGB, substrate (114) attached to a second side (115) of the reel-to-reel substrate, the PCB-substrate comprising a conductive trace (116) located on an exposed side (117) of the PCB-substrate facing away from the reel-to-reel substrate; and an electrical connection between the conductive trace of the PCB-substrate and the conductive contact pads (110) of the capacitive fingerprint sensing device, via the through-openings (103) of the reel-to-reel substrate.
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
A fingerprint sensing system comprising a plurality of conductive selection lines; a plurality of conductive read-out lines crossing the selection lines; selection circuitry controllable to provide a selection signal on at least one selected selection line in the plurality of selection lines; a plurality of pixel elements formed at intersections between the selection lines and the read-out lines; current providing circuitry coupled to the read-out lines and controllable to generate a current pulse in at least one of the read-out lines when reading out a sensing signal from each of the pixel elements.
A display arrangement (101) comprising an optical biometric imaging device (102), the display arrangement comprising a cover plate (104), an organic light-emitting diode, OLED, substrate (106) and an image sensor (108) located on a side of the OLED-substrate facing away from the cover plate, wherein the OLED-substrate comprises: a color filter layer (110) comprising an array of color filters (112), each color filter being separated from an adjacent color filter by a light-blocking region (114); a pixel layer (116) comprising an array of pixels (118) corresponding to the array of color filters, the pixel layer being arranged on a side of the color filter layer facing away from the cover plate, wherein the pixel layer further comprises a plurality of apertures (120), each aperture being at least partially aligned with a light-blocking region (114) of the color filter layer (110), and wherein each aperture is configured to project an image of at least a portion of an object (122) placed on the cover plate (104) onto the image sensor (108).
A fingerprint sensor comprising a plurality of sensing elements distributed across a rectangular sensing area with mutually opposite short sides and mutually opposite long sides, the sensing elements being arranged in a plurality of rows and a plurality of columns; readout circuitry arranged in a readout area located adjacent to a short side of the sensing area; and a plurality of readout lines for connecting each of the sensing elements to the readout circuitry, the readout lines in the plurality of readout lines extending in parallel to the long sides of the sensing area. For each column of sensing elements in the plurality of columns, at least a first sensing element and a second sensing element in the column are simultaneously connectable to the readout circuitry via a first readout line and a second readout line, respectively, in the plurality of readout lines.
An enrolment assistance device (10) is provided to facilitate biometric enrolment of a user of a contactless smartcard (1) comprising a biometric sensor (2) and a wireless power transfer arrangement (3), the enrolment assistance device (10) comprises a carrier (5) having a first surface portion (7) for receiving a user device (6) with a wireless power transfer arrangement, and a second surface portion (8) spaced apart from the first surface portion (7) to receive the smartcard (1). The first surface portion (7) has a conductor (11) configured to wirelessly harvest energy from the wireless power transfer arrangement of the user device. The second surface portion (8) has a conductor (12) arranged to be connected to the conductor (11) of the first surface portion (7) via a connector (13) for wirelessly transfer the harvested energy to the wireless power transfer arrangement (3) of the contactless smartcard (1). The contactless smartcard (1) transmits a signal to the user device (6) upon the user device (6) being moved into position by a user in the first surface portion (7) enabling the contactless smartcard (1) to harvest an amount of energy exceeding an energy threshold via the conductor (12) of the second surface portion (8), the signal causing the user device (6) to provide an alert to the user that a desired position of the user device (6) has been reached.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 19/067 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
H02J 50/10 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
29.
BIOMETRIC IMAGING DEVICE AND METHOD FOR MANUFACTURING THE BIOMETRIC IMAGING DEVICE
The present disclosure relates to a biometric imaging device (100, 200) comprising: a plastic film (102) forming an outer surface of the biometric imaging device; a thin-film transistor, TFT, circuit (104) comprising a capacitive fingerprint sensing device (106) having a sensing side (108) on a first side thereof, facing towards the plastic film, the capacitive fingerprint sensing device comprising electrically conductive contact pads (110) on a second side (112) thereof, facing away from the plastic film; a printed circuit board, PCB, substrate (114) attached to the second side of the TFT-circuit, the PCB-substrate comprising through-openings (116), wherein the PCB- substrate further comprises an electrical connection (118, 202) between a conductive trace (120) located on a top surface (122) of the PCB-substrate facing away from the TFT-circuit, via the through-openings of the PCB- substrate, and the conductive contact pads (110) of the capacitive fingerprint sensing device.
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06F 3/043 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
30.
BIOMETRIC IMAGING DEVICE AND METHOD FOR MANUFACTURING THE BIOMETRIC IMAGING DEVICE
The present disclosure relates to a method for manufacturing a biometric imaging device (120, 300, 400, 500, 600). The method comprising: providing (200) a glass carrier (100); arranging (202) a plastic film (102) on the glass carrier; forming (204) a thin-film transistor, TFT, circuit (104) on the plastic film, the TFT-circuit being configured to form a capacitive fingerprint sensing device (106) having a sensing side (108) facing towards the plastic film (102), the fingerprint sensing device comprising a plurality of electrically conductive contact pads (110) for connecting the fingerprint sensing device to external circuitry, the contact pads facing away from the plastic film; arranging (206) at least one component (112) on the TFT-circuit; arranging (208) a cover layer (114, 402) covering the TFT-circuit; and removing (210) the glass carrier.
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06F 3/043 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
31.
BIOMETRIC OPTICAL ANTISPOOFING BASED ON IMAGING THROUGH SPATIALLY VARYING OPTICAL FILTER
A biometric imaging arrangement comprises an image sensor comprising a photodetector pixel array for capturing an image of an object. An infrared cut-off filter is arranged to at least partly cover the photodetector pixel array. The infrared cut-off filter comprises a first filter area having a first transmission wavelength band including wavelengths in the visible range of wavelengths, and at least two additional filter areas having transmission wavelength bands including wavelengths in the visible range of wavelengths. The transmission wavelength bands of the additional filter areas being different from the first transmission wavelength band, wherein at least two of the additional filter areas are spatially separated by the first filter area.
An enrollment assistance device comprising a carrier with a first surface portion for a user device, and a second surface portion for a contactless smartcard; a conductor spiral supported by the carrier and5 overlapping the first surface portion and the second surface portion of the carrier. The conductor spiral is configured to form a first wireless power transfer link with the wireless power transfer arrangement of the user device when the user device is arranged on the first surface portion of the carrier, and a second wireless power transfer link with the wireless power transfer10 arrangement of the contactless smartcard when the contactless smartcard is arranged on the second surface portion of the carrier.
G06V 40/50 - Maintenance of biometric data or enrolment thereof
H01Q 1/00 - Details of, or arrangements associated with, antennas
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H04B 5/00 - Near-field transmission systems, e.g. inductive or capacitive transmission systems
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
33.
ENROLLMENT ASSISTANCE DEVICE WITH CAPACITIVE COUPLING PADS, BIOMETRIC SYSTEM AND ENROLLMENT METHOD
An enrollment assistance device with a first surface portion for a user device, and a second surface portion for a contactless smartcard; a first conductor spiral arranged in the first surface portion; a second conductor spiral conductively separated from the first conductor spiral and arranged in the second surface portion. The first conductor spiral and the second conductor spiral are coupled to each other by capacitive coupling pads.
G06V 40/50 - Maintenance of biometric data or enrolment thereof
H01Q 1/00 - Details of, or arrangements associated with, antennas
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H04B 5/00 - Near-field transmission systems, e.g. inductive or capacitive transmission systems
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
34.
AN OPTICAL PROXIMITY SENSOR ARRANGED UNDER A DISPLAY
An optical proximity sensor (100) configured to be arranged under a display panel (104), the optical proximity sensor (100) comprising: a light sensor (114) comprising an array of photodetectors configured to detect light transmitted from an object (112) on the opposite side of the at least partially transparent display panel (104); a light source (116) arranged to transmit light towards the at least partially transparent display panel (104); a collimator (118) arranged between the light source (116) and the at least partially transparent display panel (104) to cover the light source (116) to provide a predetermined field of illumination, a lens (119) arranged between the light sensor (114) and the at least partly transparent display panel (104) to focus light onto the light sensor (114), and a light blocking element (120) arranged between the light sensor (114) and the at least partially transparent display panel (104) in the focal point of the lens (119).
The present disclosure relates to an enrolment device (1) for enrolment of a biometric template in a biometrically-enabled smartcard (10). The device comprises a smartcard communication interface for powering and wireless communication with the smartcard, and a terminal communication interface for wireless communication with a user terminal. The enrolment device is enabled to, in an enrolment mode, instruct the smartcard to perform an enrolment process for enrolling a biometric reference template in the smartcard, and inform the user terminal about the enrolment process being performed. The enrolment device is also enabled to, in a training mode, instruct the smartcard to perform a training process for determining that a biometric test template obtained by a biometric sensor (12) in the smartcard matches the enrolled reference template stored in the smartcard, and inform the user terminal about the training process being performed.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06V 40/50 - Maintenance of biometric data or enrolment thereof
36.
FINGERPRINT SENSING SYSTEM WITH ROW CIRCUITRY INCLUDING CONTROL SIGNAL PROVIDING CIRCUITRY
A fingerprint sensing system comprising a plurality of conductive row lines; a plurality of conductive column lines crossing the row lines; row circuitry controllable to provide signals on at least a subset of the row lines; and an array of pixel elements formed at intersections between the row lines and the column lines. The row circuitry comprises, for each row of pixel elements, control signal providing circuitry controllable to allow passage of a control signal through the control signal providing circuitry using capacitive coupling of the control signal via a first controllable capacitor.
The present disclosure relates to a method for progressively enrolling a user of a smart card to thereafter enable fingerprint authentication for the smart card. The present disclosure also relates to a corresponding smart card and to a computer program product.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06F 21/34 - User authentication involving the use of external additional devices, e.g. dongles or smart cards
G06Q 20/40 - Authorisation, e.g. identification of payer or payee, verification of customer or shop credentialsReview and approval of payers, e.g. check of credit lines or negative lists
G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
38.
REAL-EYE DETECTION USING LIGHT OF DIFFERENT POLARIZATION ROTATIONS
24 ABSTRACT The present disclosure relates to a method of a biometric recognition system (110) of performing real-eye detection, and a biometric recognition system (110) performing the method. In an aspect, a method of a biometric recognition system (110) of performing real-eye detection is provided. The method comprises capturing (S101) a plurality of images comprising a representation of an eye (102) of the individual (100), which images are captured utilizing polarized light reflected at the eye (102) and received at a polarization-sensitive camera (103) capturing said images, wherein for each image being captured a different polarization rotation is selected, detecting (S102), from the representation in each captured image, birefringent features (122) of a cornea of the individual (100), and determining (S104), by matching the detected birefringent cornea features (122) of the captured images with the expected birefringent cornea features, whether the detected birefringent cornea features (122) are correctly rendered in at least one of the captured images; and if so determining (S105) that the eye (102) is a real eye. (Figure 3b)
A biometric imaging arrangement configured to acquire an image of an object comprising: an image sensor comprising a photodetector pixel array configured to detect light transmitted from the object for capturing an image, an optical filter assembly comprising at least an optical interference filter, the optical filter assembly being arranged to cover the photodetector pixel array, and the optical filter assembly having an infrared cut-off wavelength to at least partly block infrared light from reaching the photodetector pixel array, the optical filter assembly further having at least a first cut-off wavelength in the visible range of wavelengths, wherein the first cut-off wavelength depends on the angle of incidence of the received light on the optical filter assembly.
A method of evaluating a dielectric structure, comprising the steps of a) changing a potential difference between each sensing structure in a first set of sensing structures and each sensing structure in a second set of sensing structures, and to providing, for each sensing structure in the first set of sensing structures, a sensing signal indicative of a strength of a capacitive coupling between each sensing structure in the second set of sensing structures and the sensing structure in the first set of sensing structures; b) assign other sensing structures to the first set of sensing structures and the second set of sensing structures; c) performing step a) and step b) until a respective sensing signal has been provided for each sensing structure in the plurality of sensing structures; and d) providing an evaluation result based on the respective sensing signals.
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
41.
FINGERPRINT SENSOR WITH IO-VOLTAGE DETERMINING CIRCUITRY
A fingerprint sensor, comprising fingerprint sensing circuitry configured to sense a fingerprint of a finger, and to provide a representation of the fingerprint; a sensor interface coupled to the fingerprint sensing circuitry, and comprising at least a first input pad for input to the fingerprint sensor of at least a first digital signal, and at least one output pad for output from the fingerprint sensor of a digital data signal encoding the representation of the fingerprint; and IO-voltage determining circuitry coupled to the first input pad and configured to sense a voltage level of the first digital signal, and to determine, based on the sensed voltage level of the first digital signal, a nominal voltage level to use for the digital data signal encoding the representation of the fingerprint.
The present invention relates to an optical fingerprint sensor (400, 500) configured to be arranged under a cover structure comprising a display, the optical fingerprint sensor comprising: an array of photodetectors (304) for detecting light transmitted from an object located on an opposite side of the cover structure; an array of light emitters (302) for illuminating the object, the array of light emitters is interleaved with the array of photodetectors, and a collimator structure (402, 502) arranged to cover the array of light emitters and the array of photodetectors, the collimator structure comprising a first set of collimators aligned with the photodetectors and each being configured to provide a predetermined field of view, and a second set of collimators aligned with the light emitters, and each being configured to provide a predetermined field of illumination.
G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
H10K 39/00 - Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group
H10K 59/00 - Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group
43.
Integrated biometric sensor module and method for manufacturing a smartcard comprising an integrated biometric sensor module
A smartcard comprising: a plurality of smartcard substrate layers; an antenna layer comprising an antenna; a fingerprint sensor module embedded in the smartcard and connected to the antenna layer, the fingerprint sensor module being configured to receive energy and communicate with a reading device via the antenna, and wherein the fingerprint sensor module is galvanically isolated from an outside of the smartcard.
The present invention relates to a biometric imaging arrangement configured to be arranged under an at least partly transparent display panel and to acquire an infrared image of an object located on the opposite side of the least partly transparent display panel, the biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared light transmitted from the object for capturing an image, an at least partly transparent substrate comprising an array of microlenses, wherein each microlens is configured to redirect light through the least partly transparent substrate and onto the detector pixel array, wherein the at least partly transparent substrate further comprises optical decoupling areas configured to orthogonally redirect infrared light received from a side of the at least partly transparent substrate towards the object when being placed for imaging.
The present invention relates to a biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared radiation transmitted from an object for capturing an image, a waveguide structure arranged on the image sensor to cover the detector pixel array, the waveguide structure comprising optical decoupling areas configured to orthogonally redirect infrared light received from a side of the waveguide structure towards the object when being placed for imaging.
The present disclosure relates to a method of a biometric recognition system (110) of performing real-eye detection, and a biometric recognition system (110) performing the method. In an aspect, a method of a biometric recognition system (110) of performing real-eye detection is provided. The method comprises capturing (S101) at least one image comprising a representation of an eye (102) of the individual (100), which image is captured utilizing polarized light reflected at the eye (102) and received at a polarization-sensitive camera (103) capturing said image, wherein a polarization configuration is selected which produces an iso-chrome pattern of the representation of the eye (102) in the captured image, detecting (S102), from the representation, birefringent features (124) of a cornea of the individual (100), aligning (S103) the detected birefringent cornea features (124) with birefringent cornea features of an expected eye representation, determining (S104), by matching the detected birefringent cornea features (124) with the expected birefringent cornea features, whether the birefringent features (124) are correctly rendered in the captured image, and if so determining (S105) that the eye (102) is a real eye (102).
A fingerprint sensor comprising: a plurality of sensing structures arranged in a sensing plane for capacitively sensing a fingerprint; a charge- modification arrangement including: a plurality of charge-modification structures arranged in relation to the plurality of sensing structures to form a plurality of capacitors; and charge-modification circuitry coupled to each charge-modification structure in the plurality of charge-modification structures, and controllable to provide voltage signals to the plurality of charge- modification structures, to thereby modify amounts of charge carried by the sensing structures; and measurement circuitry coupled to the plurality of sensing structures for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of sensing structures and the finger, wherein the charge-modification arrangement is configured to provide different charge modification for different sensing structures in the plurality of sensing structures.
A smartcard (100) comprising: a fingerprint sensor module (102); a microcontroller module (302); a contact plate (304) comprising externally accessible contacts configured to communicate with a terminal (104), the contact plate being galvanically connected to the microcontroller module; and an inductive voltage boost converter (200) comprising an inductor (202) arranged in series with a diode (204) and a switch (206) configured to selectively connect a point between the inductor and the diode to ground, wherein the inductor (202) is an inductive coil in at least one conductive layer of the smartcard and wherein the diode and the switch are arranged in an integrated circuit module located in the smartcard and connected to the inductor
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
H02M 3/00 - Conversion of DC power input into DC power output
49.
REAL-EYE DETECTION USING MULTIPLE POLARIZATION CONFIGURATIONS
The present disclosure relates to a method of a biometric recognition system (110) of performing real-eye detection, and a biometric recognition system (110) performing the method. In an aspect, a method of a biometric recognition system (110) of performing real-eye detection is provided. The method comprises capturing (S101) a first image comprising a representation of an iris (121), which first image is captured utilizing polarized light reflected at the iris (121) and received at a polarization-sensitive camera (103) capturing said first image, the first image being captured with a first polarization configuration being applied and capturing (S102) a second image comprising a representation of the iris (121), which second image is captured utilizing polarized light reflected at the iris (121) and received at a polarization-sensitive camera (103) capturing said second image, the second image being captured with a second polarization configuration being applied. The method further comprises detecting (S103), from the representations of the iris (121) of the first and second images, whether birefringent features (122) of a cornea are correctly rendered in both the first and the second image, and if so determining (S104) that the iris (121) originates from a real eye (102).
The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a color controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in the photodetector pixel array arranged directly under a light source being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the color controllable light source during image acquisition, and performing biometric authentication at least partly based on metrics extracted from the image portions.
G06V 10/56 - Extraction of image or video features relating to colour
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 10/50 - Extraction of image or video features by performing operations within image blocksExtraction of image or video features by using histograms, e.g. histogram of oriented gradients [HoG]Extraction of image or video features by summing image-intensity valuesProjection analysis
G06V 10/147 - Details of sensors, e.g. sensor lenses
G06V 40/40 - Spoof detection, e.g. liveness detection
A smartcard (100) comprising: a fingerprint sensor module (102); a microcontroller module (214); a contact plate (216) comprising externally accessible contacts configured to communicate with a terminal, the contact plate being galvanically connected to the microcontroller module (214); a wireless interface circuit (211) formed in at least one conductive layer of the smartcard, the wireless interface circuit forming a first communication interface (221) to the fingerprint sensor module (102) and a second communication interface (222) to the microcontroller module, wherein at least one of the first and second communication interface is a wireless interface, and wherein the wireless interface circuit (211) comprises a capacitive coupling (223a-b) to a ground terminal of the contact plate (216).
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G08C 17/04 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
The present disclosure relates to a method of authenticating an individual (100) using biometric information of an eye (102) of the individual (100), and a biometric recognition system (110) performing the method. In an aspect, a method of a biometric recognition system (110) of authenticating an individual (100) using biometric information of an eye (102) of the individual (100) is provided. The method comprises capturing (S101) at least one image comprising a representation of an iris (121) of the individual (100), which at least one image is captured utilizing polarized light reflected at the iris (121) and received at a polarization-sensitive camera (103) capturing said at least one image, detecting (S102), from the representation, birefringent features (122) of a cornea of the individual (100), comparing (S103) the detected birefringent cornea features (122) with previously enrolled birefringent cornea features and if there is a match authenticating (S104) the individual (100).
A fingerprint sensing system for sensing a finger surface of a finger, comprising: an array of sensing elements arranged under a sensing surface, each sensing element in the array of sensing elements being configured to sense a property indicative of a distance between the sensing element and the finger surface; and read-out circuitry coupled to the array of sensing elements and configured to provide, for each sensing element in the array of sensing elements, a timing indication indicative of a time when a value of the property sensed by the sensing element reached a predefined threshold value.
An enrollment assistance device, for facilitating biometric enrollment of a user of a smartcard including a biometric arrangement and a power and communication interface, the enrollment assistance device comprising: a carrier having a first side and a second side opposite the first side; and an electronic label comprising: a card interface portion including an electrically conducting structure; a power supply portion including an electrically conducting structure for receiving electric power from a power source; and electrical circuitry connecting the electrically conducting structure of the power supply portion with the electrically conducting structure of the card interface, wherein the electronic label is folded around an edge of the carrier in such a way that the card interface portion of the electronic label is attached to the first side of the carrier, and the power supply portion of the electronic label is attached to the second side of the carrier.
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
55.
BIOMETRIC IMAGING MODULE AND METHOD FOR MANUFACTURING A BIOMETRIC IMAGING MODULE
Method for manufacturing a biometric imaging module, the method comprising: providing a carrier tape; forming a sensor opening and at least one contact pad opening in the carrier tape, wherein the sensor opening is adjacent to the contact pad opening; and from a top side of the carrier tape, arranging a biometric sensor on the carrier tape such that a body of the biometric sensor is arranged in the sensor opening and a conductive contact pad of the biometric sensor is aligned with and accessible through the contact pad opening from a backside of the carrier tape, and such that a sensing surface of the biometric sensor is facing in the same direction as the top side of the carrier tape.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
A smartcard (100) comprising: a fingerprint sensor module 102 comprising a first pair of capacitive patch antennas (201 a-b); a microcontroller module (214); a contact plate (216) comprising externally accessible contacts configured to communicate with a terminal, the contact plate being galvanically connected to the microcontroller module; a capacitively coupled wireless communication interface between the microcontroller module (214) and the fingerprint sensor module (102); and an inductively coupled wireless communication interface enabling communication between the microcontroller module (214) and an external terminal, wherein the capacitively coupled wireless communication interface is configured to operate at a first frequency and the inductively coupled wireless communication interface is configured to operate at a second frequency different from the first frequency.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G08C 17/04 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
H01L 23/60 - Protection against electrostatic charges or discharges, e.g. Faraday shields
The present invention relates to an optical fingerprint sensor (100) configured to be arranged under an at least partially transparent display panel (104) comprising an array of color controllable light sources. The optical fingerprint sensor (100) comprising: an image sensor (110) comprising a photodetector pixel array; an array of microlenses (117) arranged under the color controllable light sources; a color filter layer (119) arranged under the array of microlenses comprising alternating filter element types (116a-b) of different colors for adjacent subsets of pixels in the photodetector pixel array. The color controllable light sources (118) are controllable, in response to a first finger condition, to emit light of uniform color being a mix of the colors of the filter elements, and in response to a second finger condition, to emit a color pattern including the colors of the filter elements, wherein groups of color controllable light sources are controlled to emit light corresponding to a color of the filter elements.
A smartcard (100) comprising: a fingerprint sensor module (102) comprising a first inductive coil (201); a microcontroller module (214); a contact plate (216) comprising externally accessible contacts configured to communicate with a terminal, the contact plate being galvanically connected to the microcontroller module; a first inductively coupled wireless communication interface between the microcontroller module (214) and the fingerprint sensor module (102); and a second inductively coupled wireless communication interface enabling communication between the microcontroller module (214) and an external terminal, wherein the first wireless communication interface is configured to operate at a first frequency and the second wireless communication interface is configured to operate at a second frequency different from the first frequency.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G08C 17/04 - Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
H01L 23/60 - Protection against electrostatic charges or discharges, e.g. Faraday shields
A fingerprint sensing system comprising a plurality of conductive selection lines; a plurality of conductive read-out lines crossing the selection lines; selection circuitry controllable to provide a selection signal on at least one selected selection line in the plurality of selection lines; a plurality of pixel elements formed at intersections between the selection lines and the read-out lines; read-circuitry coupled to each read-out line in the plurality of read-out lines, the read-out circuitry being configured to acquire a read-out signal via a read-out line connected to a selected pixel element, and calibration circuitry having an input for receiving a calibration input signal and an output for providing a calibration output signal, the calibration output signal being formed through interaction between the calibration input signal and the calibration circuitry.
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
The present invention relates to a terahertz biometric imaging package comprising: an image sensor comprising an antenna pixel array arranged to detect terahertz radiation transmitted from an object, for capturing an image, each antenna pixel comprises a power detector including an antenna structure for receiving terahertz radiation, wherein the power detector is configured to convert a detected terahertz radiation to a sensing signal at a lower frequency than the frequency of the terahertz radiation, a package top cover arranged to cover the antenna pixel array, wherein the image sensor is configured to capture a terahertz image of an object located on an opposite side of the package top cover, a package bottom part arranged on the other side of the antenna pixel array opposite from the package top cover, wherein the antenna pixel array is encapsulated between the package top cover and the package bottom part.
H04N 25/21 - Circuitry of solid-state image sensors [SSIS]Control thereof for transforming only infrared radiation into image signals for transforming thermal infrared radiation into image signals
H04N 25/78 - Readout circuits for addressed sensors, e.g. output amplifiers or A/D converters
A61B 5/0507 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves using microwaves or terahertz waves
Method for forming an enrolled fingerprint template for a user of a fingerprint touch sensor. The method comprising: during a touch event in which a finger of the user is placed on the fingerprint sensor, capturing a plurality of images of the finger and comparing two of the images to determine if there is a valid transformation. If there is no valid transformation, images are compared against image quality and coverage thresholds to determine if any of the captured images are to be used for enrollment.
A method of a fingerprint sensing system arranged in a smartcard configured to acquire fingerprint data of a user with a fingerprint sensor for biometric authentication, and a fingerprint sensing system performing the method. The method comprises detecting a finger of the user contacting a sensing area of the fingerprint sensor, initializing the fingerprint sensor with a predetermined sensor setting, acquiring a calibration sub-image which is confined in size to a subarea of the sensing area, determining whether or not a quality criterion is met for the acquired calibration sub-image, and if so acquiring one or more further sub-images confined in size to a subarea of the sensing area during a time period when the smartcard is not engaged in waiting time extension request signalling with a card reader, and combining a plurality of the acquired further sub-images into a representation of a fingerprint of the user.
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/073 - Special arrangements for circuits, e.g. for protecting identification code in memory
G06T 5/50 - Image enhancement or restoration using two or more images, e.g. averaging or subtraction
G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in he photodetector pixel array arranged directly under a light source unit being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the controllable light source during image acquisition, performing biometric authentication at least partly based on metrics extracted from the image portions.
The present disclosure relates to methods of an iris recognition system (210) of reducing impact of impairment data (301) in captured iris images, and an iris recognition system (210) performing the methods. In an aspect, an iris recognition system (210) configured to reduce impact of impairment data (301) in captured iris images is provided. The system (210) comprises a camera (103) configured to capture a first image of an iris (300) of a user (100) and at least a second image of the iris (300) of the user (100). The system (210) further comprises a processing unit (203) being configured to cause the user (100) to change gaze between the capturing of the first image and the at least one second image, create a representation of the first iris image and a representation of the at least one second iris image where each spatial sample of an image sensor (203) of the camera (103) capturing the iris images is gaze-motion compensated to correspond to a same position on the iris (300) for the sequentially captured first and at least one second iris images, thereby causing the iris (300) to be fixed in the representations of the first and at least one second iris images while any impairment data (301) will move with the change in gaze of the user, and to filter the moving impairment data (301) from at least one of the created representations of the first and at least one second iris images.
The present invention generally relates to a method for image shading compensation of images acquired by an optical fingerprint sensor (100) mountable under an at least partly transparent display panel (301) of a host electronic device (101, 200), the optical fingerprint sensor comprising an image sensor (303) comprising photodetector pixel array (307), the method comprising the steps: acquiring (S102), with the optical fingerprint sensor, an image having a global intensity variation; on-chip of the optical fingerprint sensor, adding (S104) or subtracting a set of compensation values to/from pixel values of the acquired image to produce a compensated image, the set of compensation values being adapted to reduce the global intensity variation of the acquired image; providing (S106) the compensated image from the optical fingerprint sensor to the host electronic device.
The present invention relates to a terahertz biometric imaging arrangement configured to be arranged under an at least partially transparent display panel and configured to capture an image of an object located on an opposite side of the transparent display panel, the biometric imaging arrangement comprising: a transmitter element arranged to emit terahertz radiation for illuminating the object; and an image sensor comprising an antenna pixel array arranged to detect terahertz radiation transmitted from the illuminated object, for producing an image.
The present invention relates to a passive terahertz biometric imaging device configured to be arranged under an at least partially transparent display panel and configured to capture a terahertz image of an object located on an opposite side of the transparent display panel, the terahertz biometric imaging device comprising: an image sensor comprising an antenna pixel array arranged to detect terahertz radiation produced by the object, for capturing a terahertz image of the object.
A fingerprint sensing system for sensing a finger surface of a finger, comprising: a plurality of pixel elements, each pixel element in the plurality of pixel elements comprising: a photo-sensitive element configured to provide a current including a fingerprint signal current component and a common-mode signal current component; and an integrating capacitor including a first electrode coupled to the photo-sensitive element for receiving the current provided by the photo-sensitive element, and a second electrode; and a current source arrangement coupled to the first electrode of the integrating capacitor of each pixel element in the plurality of pixel elements.
In an aspect, a fingerprint sensing module configured to be integrated in a device for biometric authentication of a user of the device is provided. The fingerprint sensing module comprises a fingerprint sensor and a display configured to display information to the user; the display comprising pixel elements being arranged in the display such that the pixel elements do not obscure a sensing area of the fingerprint sensor in which area the fingerprint sensor is being configured to detect a finger of the user.
G06V 40/50 - Maintenance of biometric data or enrolment thereof
G06V 40/60 - Static or dynamic means for assisting the user to position a body part for biometric acquisition
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
A biometric sensor module for detecting a biometric feature of a user comprises: a biometric sensor comprising an array of sensing elements for acquiring sensing signals indicative of a biometric feature of a user, the array of sensing elements arranged facing towards a front side of the biometric sensor. Further, the biometric sensor module comprises a bottom flexible film attached to a back side, opposite the front side, of the biometric sensor. The bottom flexible film can carry at least one electrically conductive line electrically connectable to the biometric sensor and electrically connectable to an external electrical circuit. The biometric sensor module further comprises a top film attached to the biometric sensor closer to the front side of the biometric sensor than the bottom flexible film. The flexible film includes a bent portion such that the flexible film is bent towards the top film.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
The present disclosure relates to a fingerprint sensing system and a method performed by the fingerprint sensing system of verifying that setting data of a fingerprint sensor of the fingerprint sensing system has not been modified. In aspect, a method performed by a fingerprint sensing system of verifying that setting data of a fingerprint sensor of the fingerprint sensing system has not been modified is provided. The method comprises blocking access to the fingerprint sensor setting data held in a storage of the fingerprint sensing system, acquiring from the fingerprint sensor a representation of the fingerprint sensor setting data to be utilized upon capturing a fingerprint image, and verifying from the acquired representation if the fingerprint sensor setting data corresponds to fingerprint sensor setting data that previously was written to the storage.
The present disclosure relates to a method of amending a fingerprint template for a user of a smart card, where the user of the smart card is progressively enrolling based on comparison and/or using a separate credential such as a PIN code. The present disclosure also relates to a corresponding smart card and to a computer program product.
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
G06K 19/073 - Special arrangements for circuits, e.g. for protecting identification code in memory
73.
ENROLLMENT ASSISTANCE DEVICE HAVING A CELL COMPRISING AN ELECTROLYTE CARRIER, BIOMETRIC SYSTEM AND ENROLLMENT METHOD USING SAID ENROLLMENT ASSISTANCE DEVICE
The present invention relates to an enrollment assistance device (100), for facilitating initial biometric enrollment of a user of a smartcard (1) including a biometric arrangement (3). The enrollment assistance device (100) comprises an inactive cell (120) having an electrolyte carrier (122), wherein the cell (120) is activated in response to a liquid fluid being applied to the electrolyte carrier, such that the applied liquid fluid causes the electrolyte carrier to carry a liquid electrolyte.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
H01M 6/36 - Deferred-action cells containing electrolyte and made operational by physical means, e.g. thermal cells
74.
OPTICAL FINGERPRINT SENSOR COMPRISING A DIFFRACTIVE ELEMENT
The present invention relates to an optical fingerprint sensor (100) comprising: an image sensor (106) comprising photodetector pixel array (108); a lens system (116) arranged to focus light transmitted from an object (104) onto the pixel array; and at least one diffractive element (120) configured to separate spectral components of the light transmitted from the object and focused onto the pixel matrix, such that the spectral components are distributed across at least a subset of the photodetectors.
The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.
The present invention relates to an optical biometric sensor (100) comprising: an image sensor (302) comprising an array (301) of photodetectors (304), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets (306, 308, 309) of photodetectors; and a timing circuitry (310) configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device (314).
A biometric device comprising: biometric sensing circuitry; cryptographic circuitry; a device key area in the biometric device for storing a cryptographic device key unique to the biometric device; and a test key area in the biometric device, for storing a cryptographic test key. The biometric device is controllable between: a test state in which the test key area is connected to the cryptographic circuitry to provide the test key to the cryptographic circuitry, and the cryptographic circuitry is prevented from performing cryptographic operations on data provided by the biometric sensing circuitry; and a functional state in which the device key area is connected to the cryptographic circuitry to provide the device key to the cryptographic circuitry, and the cryptographic circuitry is connected to the biometric sensing circuitry to receive and perform cryptographic operations on data from the biometric sensing circuitry using the device key.
G06F 21/72 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
78.
SUBSTRATE FOR DUAL INTERFACE SMARTCARD AND DUAL INTERFACE SMARTCARD
A substrate (3) for a dual interface smartcard (1), comprising a contact pad module receiving portion (9); an auxiliary module receiving portion (11); and a conductor pattern (13). The conductor pattern (13) includes an antenna coil (23) having a first end (24) and a second end (26); a first set of connectors (25) arranged in the contact pad module receiving portion (9) and including a GND connector (33) and a VCC connector (31) for electrical connection with a VCC connector of the contact pad module (5); a second set of connectors (27) arranged in the auxiliary module receiving portion (11) and including a GND connector (37) and a VCC connector (35); and leads (29) connecting connectors in the first set with connectors in the second set. One of the GND connector (33) and the VCC connector (31) in the first set of connectors is conductively connected to one of the first end (24) and the second end (26) of the antenna coil (23).
An enrollment assistance device (11) comprising a carrier (13) with a first surface portion (15) for a user device (12), and a second surface portion (17) for a contactless smartcard (1); a first wireless power transfer arrangement (19) supported by the carrier and arranged in the first surface portion (15) of the carrier; a second wireless power transfer arrangement (21) supported by the carrier and arranged in the second surface portion (17) of the carrier; and a conductor arrangement (23) supported by the carrier and conductively connecting the first wireless power transfer arrangement (19) and the second wireless power transfer arrangement (21).
A fingerprint sensor module (100) comprising: a carrier (102) comprising a first recessed portion (104) on a first side (106) of the carrier; a fingerprint sensing device (108) arranged in the first recessed portion of the carrier, the fingerprint sensing device comprising a fingerprint sensing surface (110); a second recessed portion (112) on a second side (114) of the carrier, opposite the first side, and at an edge of the carrier and a connection pad (116) arranged in the second recessed portion; and an electrical connection through the carrier connecting the fingerprint sensing device to the connection pad.
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
H01L 23/043 - ContainersSeals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body
H01L 23/053 - ContainersSeals characterised by the shape the container being a hollow construction and having an insulating base as a mounting for the semiconductor body
H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
H05K 1/18 - Printed circuits structurally associated with non-printed electric components
A fingerprint sensor module (102) for a smartcard (100), the fingerprint sensor module comprising: a first substrate (200); a fingerprint sensing device (202) mounted on a first side (204) of the first substrate, the fingerprint sensing device having a sensing surface (206) facing in a first direction (207) of the fingerprint sensor module; a second substrate (208) arranged on a second side (210) of the first substrate, opposite the first side, the second substrate comprising a contact area (216) having a plurality of terminal contact pads (212) configured to connect the fingerprint sensor module to an external terminal, the terminal contact pads facing a second direction (214) of the fingerprint sensor module, opposite the first direction; and wherein the contact area (216) comprises at least one finger contact pad (220) configured to provide a potential to a finger in contact with the finger contact pad during fingerprint image capture.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
82.
ENROLLING BIOMETRICS WITH MUTUAL TRUST THROUGH 3RD PARTY
The present disclosure relates to a method of an access point (11) of enrolling biometric data of an individual (10) and an access point (11) performing the method. In an aspect, a method of an access point (11) is provided of enrolling biometric data of an individual (10). The method comprises establishing (S101) a trusted communication channel with a user device (13) of the individual (10), the trust being ensured by a trusted 3rd party (14) and capturing (S102) the biometric data of the individual (10), wherein the biometric data is enrolled with the access point (11).
G06F 21/30 - Authentication, i.e. establishing the identity or authorisation of security principals
G06Q 20/40 - Authorisation, e.g. identification of payer or payee, verification of customer or shop credentialsReview and approval of payers, e.g. check of credit lines or negative lists
H04L 9/00 - Arrangements for secret or secure communicationsNetwork security protocols
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
A fingerprint sensing system comprising a plurality of conductive selection lines; a plurality of conductive read-out lines crossing the selection lines; selection circuitry controllable to provide a selection signal on at least one selected selection line in the plurality of selection lines; a plurality of pixel elements formed at intersections between the selection lines and the read-out lines; current providing circuitry coupled to the read-out lines and controllable to generate a current pulse in at least one of the read-out lines when reading out a sensing signal from each of the pixel elements.
An optical biometric imaging device (102) for imaging a biometric object comprising: an image sensor (202) comprising a plurality of photodetector pixels; a lens assembly (206) comprising at least one lens (208) configured to focus light reflected by a biometric object onto the image sensor; at least one light source (212) arranged adjacent to the lens assembly and configured to emit light towards a sensing surface of the biometric imaging device wherein the at least one light source comprises a waveguide (502) configured to provide vertical decoupling of light; a first linear polarizer (214) arranged between the light source and the image sensor; and a ring-shaped second linear polarizer (216) arranged over the at least one light source to polarize light emitted by the light source in a direction away from the image sensor and having an opening configured to allow light reflected by a biometric object to reach the lens without being filtered by the second linear polarizer, wherein at least one of the first and second polarizer is rotatable.
A fingerprint sensor (23) comprising a plurality of sensing elements (50) distributed across a rectangular sensing area (36) with mutually opposite short sides (54a-b) and mutually opposite long sides (55a-b), the sensing elements being arranged in a plurality of rows (56) and a plurality of columns (58); readout circuitry (51) arranged in a readout area located adjacent to a short side of the sensing area (36); and a plurality of readout lines (52a-h) for connecting each of the sensing elements (50) to the readout circuitry (51), the readout lines in the plurality of readout lines extending in parallel to the long sides of the sensing area. For each column of sensing elements in the plurality of columns, at least a first sensing element and a second sensing element in the column are simultaneously connectable to the readout circuitry via a first readout line and a second readout line, respectively, in the plurality of readout lines.
The present invention relates to a biometric imaging arrangement (100) comprising an image sensor (102) comprising a photodetector pixel array (104) for capturing an image of an object (106). An infrared cut-off filter (108) is arranged to at least partly cover the photodetector pixel array (104). The infrared cut-off filter (108) comprises a first filter area (109) having a first transmission wavelength band including wavelengths in the visible range of wavelengths, and at least two additional filter areas (110a, 110b) having transmission wavelength bands including wavelengths in the visible range of wavelengths. The transmission wavelength bands of the additional filter (110a, 110b) areas being different from the first transmission wavelength band, wherein at least two of the additional filter areas (110a, 110b) are spatially separated by the first filter area (109).
A display arrangement comprising an optical biometric imaging device (102) for imaging a biometric object comprising: an image sensor (202) comprising a plurality of photodetector pixels (204); a lens arrangement (206) comprising at least one lens (208) configured to focus light reflected by a biometric object (106) onto the image sensor; an aperture layer (210) arranged between the object to be imaged and the image sensor, wherein the aperture layer comprises an aperture (212) configured to limit the amount of light reaching the image sensor; and a filter element (214) arranged in the aperture and configured to block light within a first wavelength range, wherein an area of the filter element is smaller than an area of the aperture so that a portion of light within the first wavelength range reaching the aperture layer pass through the aperture.
A smartcard (100) comprising: a plurality of smartcard substrate layers (200); an antenna layer (208) comprising an antenna (218); a fingerprint sensor module (102) embedded in the smartcard and connected to the antenna layer, the fingerprint sensor module being configured to receive energy and communicate with a reading device via the antenna, and wherein the fingerprint sensor module is galvanically isolated from an outside of the smartcard.
A method of evaluating a dielectric structure, comprising the steps of a) changing a potential difference between each sensing structure in a first set of sensing structures and each sensing structure in a second set of sensing structures, and to providing, for each sensing structure in the first set of sensing structures, a sensing signal indicative of a strength of a capacitive coupling between each sensing structure in the second set of sensing structures and the sensing structure in the first set of sensing structures; b) assign other sensing structures to the first set of sensing structures and the second set of sensing structures; c) performing step a) and step b) until a respective sensing signal has been provided for each sensing structure in the plurality of sensing structures; and d) providing an evaluation result based on the respective sensing signals.
G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
G06V 10/98 - Detection or correction of errors, e.g. by rescanning the pattern or by human interventionEvaluation of the quality of the acquired patterns
G06V 30/12 - Detection or correction of errors, e.g. by rescanning the pattern
90.
DISTANCE MEASURING DEVICE, DISTANCE MEASURING METHOD, AND PROGRAM
The present technology relates to a distance measuring device, a distance measuring method, and a program that enable distance measurement with an extended measurable distance range.
The present technology relates to a distance measuring device, a distance measuring method, and a program that enable distance measurement with an extended measurable distance range.
The distance measuring device includes a control unit that controls a light emitting unit that emits irradiation light and a light receiving unit that receives reflected light of the irradiation light reflected by an object. Control is performed by switching between a first mode and a second mode. In the first mode, control is performed on first imaging that causes the light emitting unit to emit light at a first frequency and causes the light receiving unit to perform exposure for a first exposure time, and second imaging that causes the light emitting unit to emit light at a second frequency and causes the light receiving unit to perform exposure for the first exposure time. In the second mode, control is performed on the first imaging, the second imaging, and third imaging that causes the light emitting unit to emit light at the first frequency and causes the light receiving unit to perform exposure for a second exposure time. The distance is calculated from a first signal obtained by the first imaging and a second signal obtained by the second imaging, or the distance is calculated from the first signal, the second signal, and a third signal obtained by the third imaging. The present technology can be applied to a distance measuring device that measures a distance to a predetermined object, for example.
The present disclosure relates to a method for progressively enrolling a user of a smart card to thereafter enable fingerprint authentication for the smart card. The present disclosure also relates to a corresponding smart card and to a computer program product.
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06Q 20/34 - Payment architectures, schemes or protocols characterised by the use of specific devices using cards, e.g. integrated circuit [IC] cards or magnetic cards
G06Q 20/40 - Authorisation, e.g. identification of payer or payee, verification of customer or shop credentialsReview and approval of payers, e.g. check of credit lines or negative lists
92.
BIOMETRIC OPTICAL ANTISPOOFING BASED ON IMAGING THROUGH A TRANSMISSION ANGULAR DEPENDENT OPTICAL FILTER
The present invention relates to a biometric imaging arrangement configured to acquire an image of an object, the biometric imaging arrangement comprising: an image sensor comprising a photodetector pixel array configured to detect light transmitted from the object for capturing an image, an optical filter assembly comprising at least an optical interference filter, the optical filter assembly being arranged to cover the photodetector pixel array, and the optical filter assembly having an infrared cut-off wavelength to at least partly block infrared light from reaching the photodetector pixel array, the optical filter assembly further having at least a first cut-off wavelength in the visible range of wavelengths, wherein the first cut-off wavelength depends on the angle of incidence of the received light on the optical filter assembly.
The present invention relates to a biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared radiation transmitted from an object for capturing an image, a waveguide structure arranged on the image sensor to cover the detector pixel array, the waveguide structure comprising optical decoupling areas configured to orthogonally redirect infrared light received from a side of the waveguide structure towards the object when being placed for imaging.
G02F 1/29 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the position or the direction of light beams, i.e. deflection
G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
94.
BIOMETRIC IMAGING ARRANGEMENT FOR INFRARED IMAGING COMPRISING MICROLENSES
The present invention relates to a biometric imaging arrangement configured to be arranged under an at least partly transparent display panel and to acquire an infrared image of an object located on the opposite side of the least partly transparent display panel, the biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared light transmitted from the object for capturing an image, an at least partly transparent substrate comprising an array of microlenses, wherein each microlens is configured to redirect light through the least partly transparent substrate and onto the detector pixel array, wherein the at least partly transparent substrate further comprises optical decoupling areas configured to orthogonally redirect infrared light received from a side of the at least partly transparent substrate towards the object when being placed for imaging.
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/29 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the position or the direction of light beams, i.e. deflection
A fingerprint sensor (23) comprising a plurality of electrically conductive sensing structures (41 ) arranged in a sensing plane (39) for capacitively sensing a fingerprint of a finger (53); and measurement circuitry (57) coupled to the plurality of electrically conductive sensing structures (41) for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of electrically conductive sensing structures and the finger, wherein the measurement circuitry is arranged to: provide, using a first measurement circuitry configuration (57a), a first set of measurement signals from a first set of sensing structures; and provide, using a second measurement circuitry configuration (57b) different from the first measurement circuitry configuration, a second set of measurement signals from a second set of sensing structures.
A fingerprint sensor (23) comprising a plurality of electrically conductive sensing structures (41) arranged in a sensing plane (39) for capacitively sensing a fingerprint of a finger (53) placed on the finger receiving surface (51) of the fingerprint sensor arrangement, the plurality of electrically conductive sensing structures including: a first set (41a) of electrically conductive sensing structures, each sensing structure in the first set of electrically conductive sensing structures covering an area in the sensing plane being within a first area range; and a second set (41b) of electrically conductive sensing structures, each sensing structure in the second set of electrically conductive sensing structures covering an area in the sensing plane being within a second area range only including areas greater than the areas within the first area range.
A fingerprint sensor comprising a plurality of electrically conductive sensing structures arranged in a sensing plane for capacitively sensing a fingerprint of a finger placed on the finger receiving surface of the fingerprint sensor arrangement, the plurality of electrically conductive sensing structures including: a first set of electrically conductive sensing structures, each sensing structure in the first set of electrically conductive sensing structures covering an area in the sensing plane being within a first area range; and a second set of electrically conductive sensing structures, each sensing structure in the second set of electrically conductive sensing structures covering an area in the sensing plane being within a second area range only including areas greater than the areas within the first area range.
A fingerprint sensor comprising a plurality of electrically conductive sensing structures arranged in a sensing plane for capacitively sensing a fingerprint of a finger; and measurement circuitry coupled to the plurality of electrically conductive sensing structures for providing measurement signals indicative of a capacitive coupling between each sensing structure in the plurality of electrically conductive sensing structures and the finger, wherein the measurement circuitry is arranged to: provide, using a first measurement circuitry configuration, a first set of measurement signals from a first set of sensing structures; and provide, using a second measurement circuitry configuration different from the first measurement circuitry configuration, a second set of measurement signals from a second set of sensing structures.
The present invention relates to an optical biometric sensor (100) comprising: a read-out circuitry (302) controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array (306) of photodetectors (308); and a timing circuitry (310) configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device (314).
G06K 13/20 - Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier being longitudinally extended, e.g. punched tape Details
H03M 1/18 - Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
H04N 5/341 - Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled
G06F 7/76 - Arrangements for rearranging, permuting or selecting data according to predetermined rules, independently of the content of the data
G06K 9/58 - Image preprocessing, i.e. processing the image information without deciding about the identity of the image using optical means
H04L 1/00 - Arrangements for detecting or preventing errors in the information received
H04N 5/378 - Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
100.
ADAPTIVE READOUT FROM AN OPTICAL BIOMETRIC SENSOR TO A HOST DEVICE
The present invention relates to an optical biometric sensor (100) comprising: an image sensor (302) comprising an array (301) of photodetectors (304), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets (306, 308, 309) of photodetectors; and a timing circuitry (310) configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus (312) configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device (314).
G06K 9/58 - Image preprocessing, i.e. processing the image information without deciding about the identity of the image using optical means
H04N 5/378 - Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
H04N 5/341 - Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled
