An analog-to-digital conversion circuit, a chip, and a recording device are provided. The analog-to-digital conversion circuit includes a main path module, a dynamic range enhancement module, and a dynamic digital-to-analog conversion module. The main path module converts an analog signal and an analog feedback signal into a digital signal to be processed, outputs the digital signal to be processed to the dynamic range enhancement module, and obtains a digital signal output according to the digital signal to be processed and the digital gain signal. The dynamic range enhancement module performs dynamic quantization processing on the digital signal to be processed to obtain at least one control signal and generate the digital gain signal. The dynamic digital-to-analog conversion module dynamically controls on and off of each of DAC elements in a digital-to-analog conversion array according to the at least one control signal and generates the analog feedback signal.
H03M 1/46 - Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
H03M 1/18 - Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
H04R 1/04 - Structural association of microphone with electric circuitry therefor
2.
CHANNEL INTERFERENCE MEASUREMENT METHOD, APPARATUS, MEDIUM, PROGRAM PRODUCT AND ELECTRONIC DEVICE
The present disclosure relates to a channel interference measurement method, an apparatus, a medium, a program product and an electronic device, belongs to the technical field of communications, and can accurately evaluate interference present in Bluetooth channels without impacting normal Bluetooth transmission. The channel interference measurement method comprises: determining an idle time of Bluetooth transmission; and, during the idle time, performing measurement on interference present in Bluetooth channels, so as to obtain an interference evaluation value of each Bluetooth channel.
The present application discloses an analog-to-digital conversion circuit, a chip, and a recording device. The analog-to-digital conversion circuit comprises a main path module, a dynamic range enhancement module, and a dynamic digital-to-analog conversion module. The main path module is used for converting an analog signal and an analog feedback signal into a digital signal to be processed for outputting to the dynamic range enhancement module, and obtaining a digital signal on the basis of the digital signal to be processed and a digital gain signal and outputting the digital signal. The dynamic range enhancement module is used for performing dynamic quantization processing on the digital signal to be processed to obtain a control signal, and generating the digital gain signal. The dynamic digital-to-analog conversion module is used for, on the basis of the control signal, dynamically controlling the activation and deactivation of each DAC element in a digital-to-analog conversion array, and generating an analog feedback signal. According to the analog-to-digital conversion circuit of the present application, the need for a front-end fixed-gain OPA is eliminated, reducing power consumption and reducing costs; moreover, dynamically controlling the activation and deactivation of each DAC element in the digital-to-analog conversion array further reduces the power consumption.
H03M 1/46 - Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
4.
LINK SYNCHRONIZATION METHOD AND APPARATUS, ELECTRONIC DEVICE, AND STORAGE MEDIUM
The present application provides a link synchronization method and apparatus, an electronic device, and a storage medium. The method comprises: in response to a device connection event, establishing an information synchronization link between a first master device and a second master device, and acquiring a synchronization connection event anchor point and a synchronization connection event interval of the information synchronization link; and, on the basis of the synchronization connection event anchor point and the synchronization connection event interval, performing link timing synchronization on first audio links corresponding to the first master device and second audio links corresponding to the second master device, the first audio links being audio links between the first master device and a plurality of matching target slave devices, and the second audio links being audio links between the second master device and a plurality of matching target slave devices. The present application enables timing synchronization of audio links, thereby preventing radio frequency interference between channels.
Disclosed in the present application are an IIR filter device and a filtering method thereof. The IIR filter device comprises: a head data module, which stores current input data and two pieces of input historical data; a filtering module, which stores output data of each stage via an intermediate data module first position corresponding to each stage of filtering, switches the addresses of the first position and a second position and, via a calculation module, reads the current input data and the two pieces of input historical data from a designated position, reads two pieces of output historical data from an intermediate data module and stores said data in a tail data module, and after filtering, outputs data and triggers the next stage of filtering; and the tail data module, which is used, when any stage of filtering is complete, for storing the output data of said stage of filtering as input data for the next stage of filtering, the designated position of a first stage of filtering being the head data module, and the designated position of the other stages of filtering being the tail data module. The application reduces data read and write times, avoids interruption of the calculation pipeline, reduces the required data storage by half, and reduces the required clock frequency.
A wireless device snooping method includes: a first wireless device establishing a wireless link connection with a data source end, and generating corresponding wireless link parameter(s); and the first wireless device broadcasting the wireless link parameter(s) to trigger at least one second wireless device to receive the wireless link parameter(s) and snoop the wireless link on the basis of the wireless link parameter(s). In this way, in the present disclosure, the first wireless device transmits the wireless link parameter(s) to at least one second wireless device by means of broadcast, thereby breaking through the limitation in the number of second wireless devices, so that a plurality of second wireless devices simultaneously snoop a wireless link, improving the real-time performance and reliability of transmission.
A wireless communication method includes establishing a first communication link between a source device and a first device, switching a second device into a shadow device of the first device after obtaining link information of the first communication link by the second device, and interacting the second device with the first device through the first communication link. A wireless communication is further provided. By adopting technical solutions above, a communication connection mode between multiple devices is simplified, and wireless communication between multiple devices is further realized.
Disclosed are a communication method, a communication circuit and a communication system. A first device can modulate, according to communication data to be sent, parameters of a current signal to be processed, so as to form a communication signal and output same to a second device, and the second device can parse the communication signal so as to obtain communication data.
H04B 1/00 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission
The main purpose of embodiments of the present invention is to provide a wireless communication method, comprising: a source device establishes a first communication link with a first device; after acquiring link information of the first communication link, a second device switches as a shadow device of the first device; and the second device interacts with the first device by means of the first communication link. The embodiments of the present invention also provide a wireless communication device, correspondingly. The use of the technical solution provided in the embodiments of the present invention can simplify communication connection modes between multiple devices and achieve wireless communication between multiple devices.
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
10.
TWS EARPHONE CONTROL METHOD, TWS EARPHONE, AND RELATED DEVICES
Provided is a TWS earphone control method, which is applied to a TWS earphone, wherein the TWS earphone comprises a charging module, a wired communication module, and an earphone battery. The method comprises the following steps: a charging module and a wired communication module simultaneously receiving signals from the same contact in real time, and comparing and determining, respectively according to a preset charging rule and a preset communication rule, whether the signals satisfy conditions; the charging module charging an earphone battery by using the signal which conforms to the preset charging rule; and the wired communication module realizing communication of a TWS earphone by using the signal which conforms to the preset communication rule. Further provided are a TWS earphone, a charging communication system, and a computer-readable storage medium. Compared with the related art, the TWS earphone control method, the TWS earphone, and related devices of the present invention make it possible to respond quickly and provide a good user experience result.
Disclosed in the present invention are a communication method, a communication circuit and a communication system. A first device can modulate, according to communication data to be sent, parameters of a current signal to be processed, so as to form a communication signal and output same to a second device, and the second device can parse the communication signal so as to obtain communication data. In this way, communication interaction between the first device and the second device is achieved. The present invention can be applied in a scenario in which a plurality of devices communicate, improving the flexibility of communication, and also expanding the application range of the communication system and the communication method.
Disclosed are a wireless device monitoring method and apparatus. The present disclosure addresses the problem in the prior art that the number of wireless devices being limited because a wireless link connection needs to be established between the wireless devices. Said method comprises: a first wireless device establishing a wireless link connection with a data source end, and generating corresponding wireless link parameters; and the first wireless device broadcasting the wireless link parameters to trigger at least one second wireless device to receive the wireless link parameters, and monitoring the wireless link on the basis of the wireless link parameters. In this way, in the present disclosure, the first wireless device transmits the wireless link parameters to at least one second wireless device by means of broadcast, thereby breaking through the limitation in the number of second wireless devices, so that a plurality of second wireless devices simultaneously monitor a wireless link, improving the real-time performance and reliability of transmission.
A charging control circuit (23, 33, 43, 53), a charging apparatus (2) comprising the charging control circuit (23, 33, 43, 53), a charging control method and a charging method comprising steps in the charging control method. The charging control circuit (23, 33, 43, 53) and the charging control method can provide a variable current reference (Iref_g), and limit the variable current reference (Iref_g) to a minimum current value in a periodically triggered interrupt duration, so as to enable an output voltage (Vout) to be closer to a battery core voltage (V0) when the interrupt duration ends. Therefore, by taking whether the output voltage (Vout) obtained when the interrupt duration ends approximately reaches a calibration voltage reference (Vref_s) as a condition, the charging is triggered to terminate, so that the defect of insufficient charging can be overcome, and instantaneous uprush of the output current (Iout) can be further limited by use of the variable current reference (Iref_g) in the charging duration. Moreover, the charging control circuit (23, 33, 43, 53) and the charging control method can further provide a variable voltage reference (Vref_g), and allow the output voltage (Vout) to exceed the calibration voltage reference (Vref_s) in the charging duration by improving the variable voltage reference (Vref_g) after it is detected that the output voltage (Vout) is far from reaching the calibration voltage reference (Vref_s) when the interrupt duration ends, thereby improving the charging speed.
Provided are a resistive touch panel detection method and apparatus. A resistance variance ratio of a Y plane relative to an X plane is calculated based on voltage detections before touching and after a two-point touch occurs; and then the inclination angle is calculated based on corresponding relationship between the inclination angle and the resistance variance ratio. To obtain a distance between the two points, the present invention the resistance variance ratio and a first ratio of a resistance variance of any one of the X plane and the Y plane relative to a total resistance of the any one plane are calculated; then a second ratio of an equivalent contact resistance at a midpoint relative to the total resistance is calculated; and the distance is calculated based on the resistance variance ratio, the first ratio, the second ratio, and a correlated relationship of the distance between the two points.
G06F 3/045 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
A USB device and a detection method therefor. It can be detected whether the USB device is a master device or a slave device without the use of an ID pin, thereby saving the pin resources of the USB device. The USB device comprises: a series branch formed by a first pull-up resistor (R1) and a first switch (S1) and having one end connected to VCC and the other end connected to a D+ or D− data line; a series branch formed by a second pull-up resistor (R2) and a second switch (S2) and having one end connected to the VCC and the other end connected to the D+ data line; a series branch formed by a third pull-up resistor (R3) and a third switch (S3) and having one end connected to VCC and the other end connected to the D− data line; a series branch formed by a fourth pull-up resistor (R4) and a fourth switch (S4) and having one end being grounded and the other end connected to the D+ data line; and a series branch formed by a fifth pull-up resistor (R5) and a fifth switch (S5) and having one end being grounded and the other end connected to the D− data line. The USB device belongs to the field of communication devices.
An IC having a scan chain and a testing method for a chip, comprising a first interface group, a second interface group and a scan data selector. The first interface group and the second interface group each comprise at least two input/output (I/O) interfaces which can be packaged as external pins of the IC. The I/O interfaces of the first interface group are connected to input terminals of the scan data selector in one-to-one correspondence, and an output terminal of the scan data selector is connected to a scan data input terminal of the scan chain. A scan data output terminal of the scan chain is connected to the I/O interfaces of the second interface group.
n/K, n is a shift parameter, the unit of the vertex coordinate of the polygon is 1/K pixel, and n, K are valued for natural numbers; obtaining the portions of the polygons located in the new drawing window in the new drawing coordinate; transforming the portions of the polygons located in the new drawing window in the new drawing coordinate into a group of scan segments; and shifting the original code of the coordinate of the scan segments to right by n bit, and rendering the pixels of the shifted scan segments. In the embodiment of the present invention, when the pixels covered by the scanning line are rendered, and the division operations are replaced with the manner of shifting the coordinate values, and the generated polygon cutting error is transferred to the calculating process before the rendering, the division operation is reduced in the precondition of ensuring the result is correct, so that the occupation of the CPU resource is reduced.
An integrated circuit, wherein a voltage-adjustable power supply circuit (42) receives a first power supply control signal (6) output by a programming power supply control circuit (41), outputs a first voltage signal to a efuse circuit (44) by a power source switching circuit (43) and outputs the first voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives the first voltage signal and a first programming control signal (5) output by the programming power supply control circuit (41) and burns out a corresponding efuse therein; or the voltage adjustable power supply circuit (42) receives a second power supply control signal (6) output by the programming power supply control circuit (41) and outputs a second voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives a second programming control signal (5) output by the programming power supply control circuit (41) and ensures a corresponding efuse therein not to be burnt out. Compared with the integrated circuit in the prior art, which integrates the effuse circuit (44), the integrated circuit of the invention saves production cost and use cost and also saves the lead pin resources of the integrated circuit.
H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
A method and apparatus for charging a battery is provided. The apparatus includes: a constant current circuit, a constant voltage circuit and a control circuit. The control circuit is adapted to control the constant current circuit to perform constant current charging to the battery; after a battery voltage during the constant current charging reaches a preset charging limited voltage, control the constant voltage circuit to perform constant voltage charging to the battery; after a charging current during the constant voltage charging becomes smaller than or equal to a predetermined threshold, control the battery to be charged by pulse charging until an open circuit voltage of the battery is larger than or equal to a preset voltage threshold.
A Not and Flash (Nandflash) controller and a data transmission method with the Nandflash controller are provided. The Nandflash controller includes a parameter configuration device, configured to receive an operation command from outside, wherein the operation command indicates a current transmission type, number of times needed for transmitting data, size of which is same as that of a buffer in the Nandflash, and command parameters used by each execution; a transmission controlling device, configured to transmit data of a precoded size to/from the Nandflash during each data transmission according to the current transmission type and the command parameters used by this execution the number of times indicated by the operation command. The controller and method advantageously avoid configuring a command for the next operation each time the data of the precoded size is transmitted, save time and clock resources, and greatly improves transmission efficiency.
A method for using pins in different mode during different time is provided. The method is able to make at least one pin of a SOC be used in a first interface mode or a second interface mode during different time; wherein the SOC comprises a first interface circuit, a first pin, a second interface circuit, and a second pin; the first interface circuit comprises a first bidirectional PAD unit, a first signal interface unit of the first interface mode and a interface unit of the second interface mode; the second interface circuit comprises a second bidirectional PAD unit, a second signal interface unit of the first interface mode. The method comprises: selecting the output of the first signal interface unit or the output of the interface unit of the second interface mode to be connected with the first pin through the first bidirectional PAD unit during different time.
The present invention is adapted for the field of power supply and provides a battery charging device and a method for controlling charging thereof, including: a charging circuit which has a charging current setting terminal for charging the battery according to charging current of the charging current setting terminal; a charging current control circuit which is connected with the charging current setting terminal and adjusts the charging current gradually according to equivalent resistance in the charging current control circuit; a general register circuit which is connected to the charging current control circuit and to control the equivalent resistance by setting value of a general register. In the present invention, a plurality of switching tubes and resistances are integrated into the charging current control circuit. The switching tubes is switched on or off by setting the value of the general register, thereby adjusting the existing charging current gradually and causing the voltage of the charging power source to descend/ascend smoothly. This provides a solution to the problem of equipment instability caused by the voltage fluctuation in the adjustment process of charging current in the existing technology.
A method for adjusting a reference voltage is provided, including: decoding a default code configured in a reference voltage register in a chip to obtain an actual reference voltage; comparing the actual reference voltage with a benchmark value to obtain a deviation value between the two; configuring an adjustment code according to the deviation value; and, burning the adjustment code into a nonvolatile storage medium. The present invention also discloses an apparatus for adjusting a reference voltage. Thus, adjustment on the reference voltage of the chip is standardized and costs of the chip's application schemes are saved. A method and apparatus for obtaining a reference voltage are also provided, and thus stability of the circuit's working is improved and costs of the chip's applications are decreased.
A method for performing wear leveling in a memory, and an apparatus corresponding to the method, is provided. The method includes: dividing the lifecycle of the memory which includes more than one physical blocks into at least one sampling interval; for each sampling interval, getting the first physical block by taking statistics of the degree of the wear leveling of each physical block in the memory in the current sampling interval; getting the second physical block by taking statistics of the updating times of each logical address in the current sampling interval; exchanging the logical addresses and data of the first physical block and the second physical block.
G06F 12/00 - Accessing, addressing or allocating within memory systems or architectures
G06F 13/00 - Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
G06F 13/28 - Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access, cycle steal
28.
Playing method and device of digital right managing multimedia
A playing method of digital right managing multimedia is disclosed, in which the files of DRM multimedia to be played take a Page as a playing basic unit, when the operation of fast-forward/fast-reverse is triggered, the method comprises: determining time of fast-forward/fast-reverse; determining number of Pages of fast-forward/fast-reverse based on the time of fast-forward/fast-reverse; determining Page of target playing position based on the number of Pages of fast-forward/fast-reverse; calculating key stream of the Page of the target playing position based on prestored key data of the first Page; decrypting ciphertext of the Page of the target playing position based on the calculated key stream of the Page of the target playing position; and decoding the decrypted Page of the target playing position and playing the decrypted Page of the target playing position. A playing device is also provided.
09 - Scientific and electric apparatus and instruments
28 - Games; toys; sports equipment
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) PDA (Personal Digital Assistant); computer peripheral devices, namely, keyboards, modems, mouse, printers, scanners and speakers; global positioning system (GPS) consisting of computers, computer software, transmitters, receivers and satellites; apparatus for games adapted for use with display or monitors, namely, video game cartridges; multi-media players for audio and video, namely, VCD players, DVD players and MP4 players; cameras; integrated circuits; integrated circuit chips; Gene-chips (DNA chips); computer programs and software for use in designing and testing integrated circuits; ammeters; digital photo frames.
(2) Apparatus for games adapted for use with display or monitors, namely, video output game machines. (1) Design and development of application software relating to integrated circuits, media players, digital photo frames and ammeters; technical support services relating to multimedia players, digital photo frames and ammeters.
