The invention pertains to a method for operating an image-processing device in which an image signal on which a noise signal is superimposed is digitally transmitted between a transmitter and at least one receiver, and in which the image signal comprises a timed sequence of images, each containing its own image content and a noise pattern of the noise signal superimposed on the image content. At least certain areas of at least two successive images of the image signal are compared to each other after the transmission, and if a difference is found between the noise patterns contained in the images, it is concluded that the images have been transmitted successfully even if the image content of the images is identical. The invention also pertains to an image-processing device for the digital transmission of an image signal on which a noise signal is superimposed.
The invention pertains to a method for operating an image-processing device, in which an image signal is digitally transmitted between a transmitter and at least one receiver, and in which the image signal comprises a timed sequence of images. An alternating signal which alternates at a signal alternation frequency is superimposed on the image content of the images before they are transmitted, and the signal alternation frequency is greater than or equal to the perception frequency resolvable by the human eye. The invention also pertains to an image-processing device.
H04N 17/00 - Diagnosis, testing or measuring for television systems or their details
H04N 5/222 - Studio circuitryStudio devicesStudio equipment
H04N 19/89 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
3.
SYSTEM FOR CALCULATING RESPONSE SPEED OF DISPLAY DEVICE, AND METHOD FOR CALCULATING RESPONSE SPEED OF DISPLAY DEVICE
[Problem] To provide a system for calculating a response speed of a display device, and a method for calculating a response speed of a display device, whereby an accurate response speed can be calculated even if a backlight is pulse-driven. [Solution] This system for calculating a response speed of a display device is provided with: a pulse-driven first light source; a second light source, which emits light in a wavelength range different from that of the first light source; a display unit, which transmits light emitted from the first light source, and displays an image by changing a transmission quantity corresponding to an input image signal; a measuring unit, which is attached to the display surface side of the display unit for the purpose of measuring the quantity of the light that passed through the display unit, said light having been emitted from the second light source; and a response speed calculating unit, which calculates the response speed of the display unit on the basis of measurement results obtained from the measuring unit.
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G02F 1/13 - 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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
4.
METHOD AND APPARATUS FOR DETECTING FINE LINES AND CHARACTERS
[Problem] To provide a method for detecting fine lines and characters, wherein halftone fine lines and characters, especially those with one pixel line-width, can be detected from an image easily and with high precision. [Solution] Evaluation is made whether a pixel of interest is a fine line or a character, from the degree of dispersion and the number of colors of pixels within a small-area matrix of an image data centering on the pixel of interest. Pixels are extracted from the small-area matrix using a plurality of templates, degrees of dispersion of the pixels are obtained, and a minimum degree of dispersion is obtained from among the degrees of dispersion. When the minimum degree of dispersion is higher than a prescribed degree, and the number of colors of pixels within the small-area matrix is less than a prescribed number, the pixel of interest is evaluated as being a fine line or a character.
[Problem] To provide a display device, image processing device, image area detection method, and computer program whereby a window region disposed within an image in a tile-shaped manner can be accurately detected and whereby a display can be achieved at display properties suitable for an image of the area. [Solution] An edge pixel group in which the consecutive number in the horizontal direction is greater than a predetermined value is detected as a horizontal direction line segment, and an edge pixel group in which the consecutive number in the vertical direction is within a predetermined range is detected as a vertical direction line segment. A horizontal direction line segment pair and a vertical direction line segment pair are further detected, and an area enclosed by the horizontal direction line segment pair and vertical direction line segment pair is detected as a base window. A short vertical direction line segment pair and a short horizontal direction line segment pair are detected on the basis of a horizontal direction line segment and a vertical direction line segment found not to be the horizontal direction line segment pair nor the vertical direction line segment pair, and an area enclosed thereby is detected as a pop-up window. The image classifications of the detected windows are determined and an LUT is selected to perform correction processing in accordance with the image classifications.
G09G 5/36 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory
G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
[Problem] Carry out edge enhancement which avoids over-enhancement. [Solution] An edge pixel determination means (5) determines for a plurality of pixels which are positioned in a matrix whether the pixels are edge pixels. When a pixel of interest is indicated, a weighting specific edge enhancement impact degree computation means (7) computes, for edge pixels which are present within the periphery region of the pixel of interest, a weighting specific edge enhancement impact degree which takes into account the distance to the pixel of interest as a weighting. An edge enhancement degree computation means (9) treats an edge enhancement degree W(x, y) of the pixel of interest as zero when lower than a lower bound threshold value (THs), as an upper bound coefficient value (Wh) when greater than an upper bound threshold value (THh), and computes same according to the following formula when in between said lower bound and upper bound threshold values: W(x, y) = Wh * (NumE(x, y) - THs) / (THh - THs)
H04N 5/208 - Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
G06T 5/20 - Image enhancement or restoration using local operators
The disclosed edge direction detection device detects edges having a high degree of reliability. For each edge direction, a difference total computing means (5) computes, for an indicated rectangular area, a difference total by totaling, for each edge direction, the absolute values of the differences of combination pixels in a combination pixel storage means. A near-center pixel difference calculation means (11) calculates, for the aforementioned each edge direction, the difference between a near-center pixel value and a representative pixel value as the near-center pixel difference value. An edge detection reliability computation means (13) computes an edge detection reliability for each of the aforementioned edge directions on the basis of the aforementioned near-center pixel difference value and the aforementioned difference total value. A determination means (15) determines that the edge detection with the highest edge degree of detection reliability is the edge direction in the aforementioned rectangular region.
The disclosed edge interpolation device performs interpolation not restricted by the direction of the edges. For an interpolation pixel H, the nearest actual pixels (GG1-GG4) are determined. If the edge type is given, the partition region to which the interpolation pixel (HG) belongs is determined on the basis of the edge type. A normal line is defined from the interpolation pixel (HG) normal to the partition line configuring the partition region to which said interpolation pixel belongs, the intersection points are set as virtual positions, and the pixel values of the virtual positions (1, 2) are calculated by calculating the weighted average of said pixel value using the distance. From the pixel values of the virtual positions (P1, P2), the pixel value (HGP) of the interpolation pixel (HG) is calculated. In this way, the pixel value of the interpolation pixel (HG) is obtained on the basis of the pixel values of the vertex pixels (G22, G23, G36, G35) making up a parallelogram.
In a screen light computation device, a first polarizing filter (93) blocks P waves reflected by a reflecting screen, and screen light; a reflected light sensor (95) receives S waves; a second polarizing filter (83) allows the screen light to pass while blocking the S waves; and a screen light sensor (85), being set at Brewster's angle, where the P waves are not received, still receives some escaping P waves. A screen light extraction computation look-up table (LUT; not shown) stores a correlation between the value detected by the reflected light sensor (95) and the value detected by the screen light sensor (85). The LUT is queried, a value of only the screen light that does not include the reflected light is computed, and the screen light that does not include reflected peripheral light (reflected light) without turning off a backlight of a monitor is detected in a display screen of the monitor.
G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
H04N 5/66 - Transforming electric information into light information
[Problem] To provide a stereoscopic image display device with which it is possible to enjoy the advantages of both eyeglasses format and naked-eye format devices while being capable of being reduced in size. [Solution] When a right-eye image is displayed, a light-block region BR1 is formed to the left of the center line, and when a left-eye image is displayed, a light-block region BR2 is formed to the right of the center line. When an observer is positioned in said position, the observer's right eye ER observes only the right-eye image, and the observer's left eye EL observes only the left-eye image. As a result, the observer is capable of observing a stereoscopic image in the position of the light-block regions BR1 and BR2 even when facing a stereoscopic display device (1) with the naked eye. Additionally, while a state will occur in a region other than the light-block regions BR1 and Br2 wherein the right-eye image and left-eye image are intermingled, it will be possible for a plurality of observers to simultaneously observe the same stereoscopic image by wearing eyeglasses for observing such images.
[OBJECTIVE] To perform spy photography prevention processing using a desired obstruction image. [Solution] Obstruction image data generation units (13a to 13n) of the present invention generate obstruction image data corresponding to an imparted parameter. A parameter imparting means (15) imparts parameters so that each of the obstruction image data generation units (13a to 13n) generates different obstruction image data. An intermediate frequency component removal means (5), upon being imparted with the obstruction image data from the obstruction image data generation units (13a to 13n), removes frequency components that in relation to spatiotemporal contrast-sensitivity are higher than the lower limit set value and lower than the upper limit set value of same so that when the obstruction image data is displayed, a human being cannot recognize the obstruction image data. A superimposition means (7) superimposes the obstruction image after the removal upon an input image.
H04N 5/66 - Transforming electric information into light information
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
12.
LIGHT VOLUME CONTROL METHOD FOR BACK LIGHT, AND LCD DEVICE USING SAME
Disclosed are a light volume control method for a back light, and an LCD device using the same. The LCD device is provided with: a liquid crystal panel (42); a temperature measurement apparatus (45) which measures the temperature of the liquid crystal panel; a back light (43) which radiates light onto the liquid crystal panel; a light volume measurement apparatus (44) which measures the volume of light radiated from the back light; a brightness setting apparatus (54) which sets a brightness setting value (Br) corresponding to the light volume of the back light; a first lighting volume control unit (71) which sets a fixed target light volume (Brt1) for the back light on the basis of the brightness setting value; a second lighting volume control unit (81) which sets a first variable target light volume (Brt2(n)) for the back light on the basis of the light volume predicted by the measurement from the light volume measurement apparatus; and a third lighting volume control unit (91) which sets a second variable target light volume (Brt3) for the back light on the basis of the temperature measured by the temperature measurement apparatus. The disclosed light volume control method for a back light can rapidly stabilise the brightness of an LCD device when the LCD device is started up.
Provided is a power supply device capable of implementing harmonic suppression while achieving power saving. Under normal conditions, an open/close element (11) closes an electric path. Under the normal conditions, voltage rectified by a diode bridge (20) is supplied to a main power supply unit (40) and an auxiliary power supply unit (50) through a harmonic suppression circuit (30), and therefore a harmonic component generated by a distorted current waveform to a smoothing capacitor (41) on the input side of the main power supply unit (40) and a smoothing capacitor (51) on the input side of the auxiliary power supply unit (50) can be suppressed. Under standby conditions, the open/close element (11) opens the electric path. Under the standby conditions, voltage rectified by a diode (52) is applied to the auxiliary power supply unit (50), and an electric current flows to the auxiliary power supply unit (50). A feedback current from the auxiliary power supply unit (50) flows to the commercial power supply (1) side via a diode (23).
H02M 7/12 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 3/155 - 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
The advantages of both an eyeglass-type device and a glassless-type device can be received without switching or the like. Since a first display unit (7) and a second display unit (11) form light-shielded regions (BR2, BR1) on the right and left sides of the center line because of asymmetrical arrangement of light sources, an image observed with the right eye (ER) of an observer, who is at this position, is only an image for the right eye, and an image observed with the left eye (EL) of the observer is only an image for the left eye. As a result of this, at the position of the light-shielded regions (BR2, BR1), the observer can observe a three-dimensional image even if facing the three-dimensional image display device (1) without eyeglasses. Meanwhile, in regions except the light-shielded regions (BR2, BR1), the image for the right eye and the image for the left eye are in a mixed but differently polarized state, so that a plurality of observers, who respectively wear eyeglasses with differently polarized right and left glasses, can observe the same three-dimensional image simultaneously.
Disclosed are an image display method, a recording medium, a computer program and a display device which can adjust the light intensity of a display panel without using photometric images. An optical sensor (5) measures the intensity of the light (tristimulus value) from a part of a display area (the measurement area of the optical sensor (5) in a display panel(1)) comprising a plurality of pixels in the display panel (1). A calculation unit (20) calculates the light intensity (tristimulus value) emanating from the measurement area on the basis of the video level (image data) of each of the pixels for displaying the image in the measurement area. A comparison unit (19) compares the calculated light intensity and the measured light intensity. A control unit (10) adjusts the light intensity (luminance, chromaticity, etc.) of the display panel (1) in response to the result of the comparison carried out using the comparison unit (19).
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
A stereoscopic image display device (1) comprises a half mirror (5) having a 1/2 wavelength plate (19) and a half-mirror layer (23b). Therefore, it is possible to rotate the polarization direction of light incident upon the surface of the half mirror (5) through which the light is transmitted and to emit the light from the half mirror. Consequently, the manufacturing cost can be reduced compared with the arrangement in which a 1/2 wavelength plate (19) is provided on a front display surface of one of two image display devices provided with linear polarization plates having the same polarization direction, or the arrangement in which two image display devices having linear polarization plates having different polarization directions are arranged. Moreover, a high definition stereoscopic image can be observed by making the sequence and positions of colors of sub-pixels identical between the two image display devices (2, 3) when images are combined through the half mirror (5) and are displayed.
Disclosed is a display device which measures display characteristics, such as luminance and chromaticity, relating to display performed by a display panel. In the display device, an optical sensor (5) is disposed at a position where light that has been outputted from the display surface (1a) of a liquid crystal panel (1), i.e., the display panel, and reflected external light that has been reflected by the display surface (1a) enter. The characteristics of the display panel as well as those of the reflected light of environmental light that has been inputted from the outside and reflected by the display surface can be measured by disposing the optical sensor (5) at such position, and on the basis of the measurement results, the display characteristics can be accurately adjusted.
G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
18.
SIGNAL TYPE DETERMINATION DEVICE AND SIGNAL TYPE DETERMINATION METHOD
Even if identification data that indicates a signal type is not superposed on each of image signals transmitted through a plurality of transmission lines, the signal type of each of the image signals is determined. It is judged whether a phase difference judgment condition is met. The phase difference judgment condition relates to whether a phase difference between a first image signal transmitted through a first transmission line and a second image signal transmitted through a second transmission line is less than a predetermined value or whether the phase difference is equal to or less than the predetermined value. In the case where it has been judged that the phase difference judgment condition is met, it is determined that the first image signal and the second image signal are dual link signals. In the case where it has not been judged that the phase difference judgment condition is met, it is determined that the first image signal and the second image signal are single link signals.
A half mirror luminance correction coefficient b is used by a luminance correction processor (23) to correct a luminance input signal LI input at a first luminance adjustment unit (13) to LO, also, the half mirror luminance correction coefficient b is used by the luminance correction processor (23) to correct a luminance input signal LI input at a second luminance adjustment unit (13) to LO. Accordingly, images of a first image display unit (3) to be reflected at the half mirror, and images of a second image display unit to be transmitted through the half mirror, can be corrected so as to eliminate the luminance differences according to the optical characteristics of the half mirror, and the luminance differences of the stereoscopic images can be controlled. As a result, the "off feeling" in the stereoscopic images resulting from the half mirror can be suppressed.
Provided are a display apparatus, a display system, a computer program, a recording medium, and a correction method, wherein the brightness or color tone can be corrected to generate color space information without need of the attendance of an operator. A control unit (10) executes a calibration when a judgment unit (13) judges that the condition to determine that an operator is not attendant is satisfied. The calibration is carried out for all or a part of the brightness, the white point (gain), gamma (gradation), the primary color point (each of red, blue, and green), etc. The control unit (10) stores a correction amount (22) by the calibration value in a storage unit (20) and measures the brightness or color tone after correction (after calibration) using an optical sensor (44) and stores the final measurement in the storage unit (20) as a corrected measurement (23). After the calibration is carried out or when the judgment unit (13) judges that the condition to determine that an operator is attendant is satisfied, the color space information is generated by a profile generation unit (205).
G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
G09G 5/04 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using circuits for interfacing with colour displays
G09G 5/06 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
Provided is a display system which can save power consumption by switching a plurality of monitors to the operating state of low power consumption when a user utilizing multi-monitor environment stops the work for a short time, and also provided is a display controller and a computer program constituting the display system. A human sensor (3) is mounted on at least one of monitors (2a-2c) in multi-monitor environment where a plurality of monitors (2a-2c) are connected with a PC (1), and the PC (1) controls switching of the operating state of a plurality of monitors (2a-2c) according to the detection results of the human sensor (3). The monitors (2a-2c) are operated in sleep mode or power off mode when all human sensors (3) detect absence of the user, and the monitors (2a-2c) are operated in normal operation mode when at least one human sensor (3) detects presence of the user.
Disclosed is a 3D image display apparatus in which an upper light source unit (29) which is provided with a pair of light sources (33, 35) and a lower light source unit are arranged between a reflector unit (17) which is provided, on its reflection surface (19) side, with one (f1) of focuses and which has an elliptic mirror (15), and a transmissive liquid crystal display panel (5), so that the lateral width of the apparatus can be reduced. Furthermore, as the elliptic mirror is immovable and the reflection surface (19) has a symmetrical shape as viewed in a plan view, it is possible for each light source to use the common elliptic mirror (15). Therefore, a small 3D image display apparatus whose manufacturing cost is reduced can be realized.
G02B 27/22 - Other optical systems; Other optical apparatus for producing stereoscopic or other three-dimensional effects
G02F 1/13 - 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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
G03B 35/18 - Stereoscopic photography by simultaneous viewing
A display device (100) provided with a device (102) for adjusting the position of a monitor (2), the device (102) allowing the monitor (2) to be moved between positions having a large vertical height difference, being capable of adjusting the position of the monitor (2) to a low position, and having a small-sized base (6). The device (102) for adjusting the position of the monitor (2) is provided with a monitor-holding section (4), the base (6), a connecting body (8) for connecting the monitor-holding section (4) and the base (6) to each other, a first position-adjusting means (10) for moving the monitor holding section (4) upward (downward) relative to the connecting body (8), and a second-position adjusting means (11) for moving the connecting body (8) upward (downward) relative to the base (6) when the first position-adjusting means (10) moves the monitor-holding section (4) relative to the connecting body (8).
G09F 9/00 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
H04N 5/64 - Constructional details of receivers, e.g. cabinets or dust covers
At the time of display of a video picture (motion image) that is hard to sense flickering and at the time of display of a video picture (still image) that is easy to sense flickering, the liquid crystal image display unit controls modulated light pulses for a backlight by changing phases of pulses within a unit vertical synchronization period instead of changing the number of a plurality of modulated light pulses to be generated within the unit vertical synchronization period. At the time of display of the motion image, pulse intervals are reduced to combine a plurality of pulses into a single pseudo pulse. At the time of display of the still image, the pulse intervals are equalized. This generates, in a pseudo manner, the modulated light pulses different in frequency for display of the motion image and still image. In reality, any frequencies of the modulated light pulses are never changed, thus variations in chroma and luminance of the images at the time of display of the motion image and the still image can be constrained, and further blurring on the motion image and flickering on the still image can be constrained.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
25.
Arrangement comprising a mobile telephone and an LCD display module
In certain medical systems, such as modalities, it is not desirable to install a program for adjusting an image reproduction characteristic curve with respect to a reference characteristic curve. An arrangement which comprises a mobile telephone, an LCD display module and a look-up table to facilitate said adjustment is provided.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
Disclosed is a display apparatus wherein light emitted from a light source arranged on the side of one focal point (f1) enters from an incoming surface (25) of an elliptical mirror (17), reflects on an elliptical reflection surface (27), passes through a transmissive liquid crystal display panel (5) and is collected to a focal point (f) on the side of the other focal point (f2). Thus, a view angle can be limited only in the direction to the other focal point (f). Furthermore, the light source is arranged on the side of the elliptical mirror (17) so as to collect light from the one focal point (f1) of the ellipse to the side of the other focal point (f2). Thus, the depth of the apparatus is reduced, and the size of the apparatus is reduced.
G02F 1/133 - Constructional arrangementsOperation of liquid crystal cellsCircuit arrangements
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
In an image display device, light radiated from light sources (15, 16) is reflected by an elliptic mirror (17) of a reflecting unit (19) and transmitted through a light transmitting liquid crystal display panel (5) to form an image for right eye and an image for left eye on focal points. Since the reflecting unit (19) is constituted by laminating surfaces of the blades (18) of the elliptic mirror (17) in the vertical direction, brightness and darkness uniformity in the right-left direction of the image is improved. As light is not necessarily diffused in the right-left direction, crosstalk is not reduced. Furthermore, as the reflecting unit (19) only reflects the light from the light sources (15, 16) by the reflecting surface of the elliptic mirror (17), use efficiency of light is improved.
G02B 27/22 - Other optical systems; Other optical apparatus for producing stereoscopic or other three-dimensional effects
G02F 1/13 - 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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
A monitor attachment/detachment mechanism having an attachment plate fixed to either a monitor or a monitor support base and also having an engagement plate fixed to the other, in which the attachment plate can be detachably attached to the engagement plate to enable the monitor to be detachably attached to the monitor support base. In the attachment plate attached to the engagement plate, when a locking plate is pivoted in the normal direction, a locking claw of the locking plate enters an engagement hole in a side wall of the attachment plate to lock the attachment plate, and when pivoted in the reverse direction, the locking claw exits from the engagement hole to unlock the attachment plate.
B60R 11/02 - Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the likeArrangement of controls thereof
It is possible to provide a display system which perform a flexible ON/OFF control. As shown in Fig. 5A, when a personal computer (2) is in the ON state and display devices (D1, D2, D3) are all operating in a normal screen display mode (S4), the display device (D1) is switched to a secondary OFF mode (S2). Thus, no voltage is outputted from a DDC signal output terminal (26a) of the display device (D1). As a result, no voltage is supplied to a DDC signal input terminal (50a) of the display device (D2) of the latter stage and the display device (D2) enters an NLR OFF mode (S5). In the same way, the display device (D3) also enters the NLR OFF mode (S5).
G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
H04N 5/66 - Transforming electric information into light information
The invention relates to an image playback system (3), to which digital R, G, B video signals (R, G, B) and a communication signal (SDA) may be supplied by an image source (1) via an R, G, B (7, 8, 9) pair line, comprising a programme memory (18) in which configuration data for a programmable module (21) necessary for operation of the playback system (3) is stored. Measures permitting an improved firmware updating for the image playback system are disclosed.
G06F 11/14 - Error detection or correction of the data by redundancy in operation, e.g. by using different operation sequences leading to the same result
31.
CONTOUR CORRECTING METHOD, IMAGE PROCESSING DEVICE AND DISPLAY DEVICE
It is an object to provide a contour correcting method for carrying out correction such as enhancement of contours suitable for characteristics of an input image, an image processing device for carrying out the contour correction by using the method, and a display device for displaying an image subjected to the contour correction. A noise elimination filter (21) eliminates noise from an input image and a contour component extracting unit (23) extracts a contour component. The contour component is extracted by calculating a difference between the input image and a smoothed image that is the input image subjected to smoothing by a smoothing image generating unit (24). A contour component comparing unit (26) compares the extracted contour component with a threshold value and a sum total calculating unit (27) calculates the sum total of the contour components that are equal to the threshold value or more. A control circuit (11) determines the degree of enhancement of the contours in accordance with the sum total and averaged brightness of the input image calculated by an average brightness calculating unit (22). An enhancement degree adjusting unit (28) adjusts the determined degree, and a contour component enhancing unit (30) enhances the contour component in accordance with this enhancement degree and adds it to the input image to carry out contour enhancement processing.
H04N 5/208 - Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
The invention relates to an image play-back unit (1) with a front frame (2) and with a sensor system (6) provided with a sensor (9). The sensor (9) is provided for detecting the luminance and/or the color location of an image that can be represented on a display (7) of the image play-back unit (1). For detecting luminance, image play-back units exist, which have a sensor support that, in a non-operational position, is placed in a recess of a frame of a flat screen in an area that cannot be seen by a viewer. Suitable drive means make it possible for the sensor support to swivel out from its non-operational position into a position for detecting the luminance. The production of an image play-back unit of this type is complex. In addition, the drive means are susceptible to faults whereby rendering a continuous and fault-free detection of the luminances impossible. The invention provides measures that avoid these drawbacks.
In one aspect a transmission system with a transmitter which can be connected to a video source and a receiver linked to the transmitter via at least four circuit pairs, to which receiver a playback device can be connected is provided. Data is usually exchanged digitally between a graphics card in a personal computer and an LCD display module. The personal computer transmits a digital R, G, B video signal to the LCD display module via a special, so-called DVI (Digital Video Interface) cable. This DVI cable is also provided to transmit so-called DDC (Display Data Channel) data, which particularly comprises specification information of the LCD display module. A transmission system is proposed, which simplifies a connection of an LCD display module to a personal computer and with which the DVI cable can be dispensed with.
H04N 11/20 - Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
34.
Method and arrangement for optimizing a luminance characteristic curve
A method and an arrangement for optimizing the luminance characteristic curve for a display system using a lookup table. Digitized video levels are supplied to this lookup table and are optimized using correction values stored in the lookup table. With suitable means, the luminance characteristic curve can be easily adapted to standards and/or custom specifications. The memory requirement is low, since it is not necessary to provide different lookup tables for different ambient luminosities or selected reproduction models (curves).
G09G 5/02 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
An arrangement with a panel of a flat screen and a graphics processor, to which a digitized image signal can be applied. A lookup table evaluates the digitized image signal and transmits the digitized image signal to the panel via an interface, whereby the image information is visually displayed. Suitable means are used to reduce interfering influences on the image reproduction characteristic of the panel due to aging effects of the light transmitting parts of the panel, e.g., due to aging effects of the panel glass, the LCD fluid or the diffuser and/or polarization foils. The sensor is only visible above the display surface during a calibration phase. The image reproduction characteristic is adjusted automatically on site, e.g., while the flat screen is in use. No service personnel are required for this purpose.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
patents
