Abstract: A trench-gate source-follower (TGSF) transistor is described, such as for integration with image sensor pixels. The TGSF transistor is at least partially built into a trench etched into a substrate. A contiguous doped region is implanted around the inner walls of the trench to form a buried-trench current channel. A trench-gate is formed to have at least a buried portion that fills the volume of the trench. A gate oxide layer can be disposed between the buried portion of the trench-gate and the buried-trench current channel. Drain and source regions are formed on either end of the trench-gate. Activating the trench-gate causes current to flow between the drain and source regions via the buried-trench current channel around the buried portion of the trench-gate. The geometry of the buried-trench current channel can effectively increase the width of the active region of the source-follower transistor without increasing its physical layout width.

Abstract: A saddle-gate source follower transistor is described, such as for integration with in-pixel circuitry of complementary metal-oxide semiconductor (CMOS) image sensor (CIS) pixels. The saddle-gate source-follower transistor structure can include a channel region having a three-dimensional geometry defined on its axial sides by trenches. A gate oxide layer is formed over the top and axial sides of the channel region, and a saddle-gate structure is formed on the gate oxide layer. As such, the saddle-gate structure includes a seat portion extending over the top of the channel region, and first and second fender portions extending over the first and second axial sides of the channel region, such that the first and second fender portions are buried below an upper surface of the semiconductor substrate (e.g., buried into trenches formed in side isolation regions).

Abstract: Techniques are described for touch event sensing in a capacitive touch panel that is integrated with a display. In some such environments, a large amount of display noise is capacitively coupled with the touch sensing signals. This can degrade performance of conventional sensing approaches, which tend to use a buffering stage followed by a difference amplifier stage. Embodiments provide a single-stage, differential-difference-amplifier-based touch event sensing approach that pre-cancels coupled display noise from adjacent channels by common-mode rejection prior to amplifying, thereby generating amplified differential output signals that include substantially only the desired touch sensing information.

Abstract: The present disclosure provides a method and system for data transmission, chip, an electronic device, and a computer readable storage medium. The method applied at a first Bluetooth end includes: establishing a point-to-point connection with a second Bluetooth end; acquiring identity information of the second Bluetooth end through the point-to-point connection; and sending broadcast isochronous group information BIGInfo to the second Bluetooth end through the point-to-point connection when the identity information of the second Bluetooth end is verified, to enable the second Bluetooth end to receive a data stream of a broadcast isochronous group BIG sent by the first Bluetooth end according to the BIGInfo.

Abstract: A pressure detection module and an electronic device are provided. The pressure detection module is disposed between a support and an inner surface of a housing of the electronic device. The pressure detection module includes a first electrode, a second electrode, and a controller. The first electrode is fixed to an inner surface of a force input region of the housing, the second electrode is fixed to the support, and the second electrode is disposed opposite to the first electrode. The force input region of the housing is configured to drive the first electrode to move towards the second electrode based on a received external pressure. The controller is configured to determine a pressure detection result of the external pressure based on a capacitance change between the first electrode and the second electrode. The pressure detection module occupies small space in the electronic device, and is easy to mount.

Abstract: A capacitance detection apparatus and earphone. The capacitance detection apparatus includes a front housing and a rear housing, where the capacitance detection apparatus includes: a circuit board, a sensing electrode and a processing unit which are provided at the front housing, where the circuit board, the sensing electrode and the processing unit are integrated together; the sensing electrode is arranged in a first area of the circuit board, the processing unit is arranged in a second area of the circuit board, and the sensing electrode and the processing unit are electrically connected through a metal wiring layer in the circuit board; the sensing electrode is configured to sense a to-be-measured object and form a capacitance detection signal, the capacitance detection signal is transmitted to the processing unit through the metal wiring layer, and the processing unit is configured to process the capacitance detection signal to detect the to-be-measured object.

Abstract: The invention discloses a method for processing image data provided by an image sensor, the image data comprising an array of pixels, wherein the method comprises the steps of: a) Determining the respective local brightness difference between a selected pixel and a set of pixels located adjacent to the respective pixel and assigned to the same colour of the respective pixel; and b) Identifying the selected pixel as a defect pixel when the local brightness difference for the selected pixel exceeds an upper threshold value and/or is less than an lower threshold value, and when the local brightness difference for the selected pixel exceeds an weighted maximum local brightness difference determined for the set of pixels located adjacent to the selected pixels and/or is less than an weighted minimum local brightness difference determined for the set of pixels located adjacent to the selected pixel.

Abstract: An oscillator acceleration circuit, configured to accelerate the start-up of an oscillator, wherein the oscillator has an input terminal and an output terminal. The oscillator acceleration circuit includes an inverting amplifier, a feedback resistor and an acceleration circuit; the inverting amplifier has an input terminal and an output terminal correspondingly coupled to the input terminal and the output terminal of the oscillator. The feedback resistor is coupled between the input terminal and the output terminal of the oscillator, and the acceleration circuit is coupled between the input terminal and the output terminal of the oscillator. The acceleration circuit is configured to provide a transfer function, wherein the transfer function is the same as the transfer function provided by a resistor and a capacitor connected in parallel; wherein the resistance of the resistor is less than zero.

Abstract: Embodiments of the present disclosure provide a method for updating a capacitance reference, which includes: determining, based on an n-th frame of raw capacitance data and an (n?M)-th frame of raw capacitance data outputted from the capacitance detection apparatus, a feature value corresponding to the n-th frame of raw capacitance data; computing a difference value between the n-th frame of raw capacitance data and a reference value corresponding to an (n?1)-th frame of raw capacitance data outputted from the capacitance detection apparatus, to obtain a capacitance variation; and determining, when the feature value corresponding to the n-th frame of raw capacitance data is less than a first threshold Thr1, and the capacitance variation is less than a proximity threshold Thron, the n-th frame of raw capacitance data or the (n?1)-th frame of raw capacitance data as a reference value corresponding to the n-th frame of raw capacitance data.

Abstract: A pressure detection module and an electronic device are provided. The pressure detection module includes: a first electrode, a second electrode, a first circuit board, a second circuit board, and at least two solder fixing parts. A first surface of the first circuit board is fixed to an inner surface of a force input area of the housing. A second surface of the first circuit board is fixed to a first surface of the first electrode. A first surface of the second circuit board is fixed to a second surface of the second electrode. Two end sides of the second surface of the first circuit board and two end sides of the first surface of the second circuit board are disposed opposed to each other through the at least two solder fixing parts. Thereby, the pressure detection module does not require a bracket and has a small thickness.

Abstract: An electronic device and a method for detecting an intensity of ambient light are provided. The method includes: sensing a light intensity of incident light, wherein the incident light includes ambient light passed through the display screen and light leaked from the display screen; obtaining an estimated light intensity of the light leaked from the display screen based on display data of a target region of the display screen; computing based on the estimated light intensity and a temperature compensation coefficient corresponding to a current temperature of the display screen, to obtain a light intensity of the light leaked from the display screen; and obtaining a light intensity of the ambient light passed through the display screen based on the light intensity of the incident light and the light intensity of the light leaked from the display screen.

Abstract: A voltage attack detection circuit includes: at least one voltage regulation circuit, where the at least one voltage regulation circuit is connected to an external supply respectively, the at least one voltage regulation circuit is configured to convert the external supply to at least one internal supply, and the at least one internal supply is configured to output at least one first voltage respectively; at least one voltage sensor, where the at least one voltage sensor is connected to the at least one internal supply respectively, so as to receive the at least one first voltage respectively, each voltage sensor of the at least one voltage sensor is configured to output a reference voltage based on a received reference voltage and a received first voltage, the reference voltage is configured to indicate whether a received first voltage is within a present voltage range.

Abstract: A touchpad includes a touch assembly and a support assembly. The touch assembly is disposed on the support assembly. The support assembly includes: a main support component, disposed at an edge of a bottom surface of the touch assembly; a fixed platform, on which a boss is integrally formed; and first and second elastic components, where the first and second elastic components are symmetrically connected to the main support component along a plane in which the main support component is located, an opening for accommodating the fixed platform is formed between the first and second elastic components, the fixed platform is connected between the first and second elastic components, and the support assembly has a sheet-like structure; and a travel switch is disposed on the bottom surface of the touch assembly, and the boss is configured to touch and trigger the travel switch when the touch assembly is pressed.

Abstract: A wearing state detection method, a wearing state detection device, and a wearable device are provided. The method detects a wearing state of the wearable device and includes: emitting, by the light emitting unit, light of at least two different wavelengths to a subject in a time division manner; receiving, by the light receiving unit, reflected light corresponding to light of each wavelength after being reflected by the subject; obtaining intensity of reflected light corresponding to the light of each wavelength respectively; calculating a fluctuation range of a light intensity ratio, which is a ratio between intensity of the reflected light corresponding to light of the at least two different wavelengths received by a same light receiving unit; and determining that the device is in a wearing state when the fluctuation range is greater than or equal to a first threshold.

Abstract: A pressure touch pad, a pressure touch pad assembly, and an electronic device are provided. The pressure touch pad includes a printed circuit board, a pressure sensor, a pressure sensor bracket, and a touch controller. The printed circuit board is stacked on the pressure sensor bracket, a touch electrode layer is provided on the printed circuit board, the touch electrode layer is configured to output a touch sensing signal when a finger touches the touch pad; the pressure sensor is configured to deform and output a pressure sensing signal when the finger presses the pressure touch pad; and the pressure sensor bracket includes a reinforced region, a non-reinforced region, and a flexible arm, the reinforced region is fixedly connected to the printed circuit board, the non-reinforced region is fixedly connected to an outer case, and the flexible arm is connected to the reinforced region and the non-reinforced region.

Abstract: A fingerprint identification method, includes: collecting a first fingerprint image according to a sampling parameter; determining a collection environment of the first fingerprint image according to the first fingerprint image and a pre-stored reference image, wherein the reference image is a fingerprint image obtained under a reference light environment; processing the first fingerprint image according to a processing parameter corresponding to the collection environment; and performing fingerprint identification according to the processed first fingerprint image. By pre-storing the reference image, the present application can quickly judge the collection environment of the fingerprint by collecting only one fingerprint image, which saves time for collecting the fingerprint image and judging the collection environment, and improves the identification efficiency of the fingerprint effectively.

Abstract: Techniques are described herein for phase modulation and interpolation that support high phase modulation resolution with high linearity. Embodiments receive a digital signal that uses a sequence of K-bit digital codes to encode a sequence of instantaneous phases for phase-modulating a local oscillator signal. A fractional divider divides a reference clock into N divided clock signals at equally spaced phase intervals and selects a pair of such signals based on first designated bits of the digital code. A fractional divider-calibrated delay line generates M delayed clock signals at equally spaced phase intervals between the selected pair of divided clock signals, and selects a pair of the delayed clock signals based on second designated bits of the digital code. A digital controlled edge interpolator generates a delayed local oscillator output signal by interpolating between the selected pair of delayed clock signals based on third designated bits of the digital code.

Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to access a CFO (carrier frequency offset) estimate, and to, for each of one or more working frequencies: cause the receiver RF chain to receive a receiver RF signal from the antenna at each working frequency, generate I/Q measurement data based at least in part on the received receiver RF signal and the CFO estimate, store the I/Q measurement data, and cause the transmitter RF chain to transmit a transmitter RF signal to the antenna at each working frequency, where the controller is further configured to cause the transmitter RF chain to transmit the I/Q measurement data for each working frequency to the antenna.

Abstract: A method for detecting ambient light under a display screen includes: acquiring first sampling data of a sensor under a first sampling parameter; acquiring a current main frequency of the display screen; determining whether the first sampling data is valid according to the current main frequency and a standard main frequency of the display screen; adjusting the first sampling parameter as a second sampling parameter according to the current main frequency and the standard main frequency, when the first sampling data is invalid; acquiring second sampling data of the sensor under the second sampling parameter; and determining intensity of the ambient light according to the second sampling data. The method of the present application can effectively avoid an ambient light detection error caused by the offset of the main frequency of the display screen or the sensor, and improve accuracy of the ambient light detection.

Abstract: The present application relates to the field of signal processing, and in particular, to a hearing aid method and apparatus for noise reduction. A hearing aid method for noise reduction, comprising: identifying a scenario where a user is located; and if detection data contains sample data in a sample database corresponding to the scenario, entering a hearing aid mode, and in the hearing aid mode, playing back all or part of external sounds, the external sounds being acquired by a reference microphone; the sample database is a sample sound library, and the sample data is a sample sound; different scenarios correspond to different sample sound libraries; wherein the sample sounds in respective sample sound libraries are configured with priorities; and the sample sounds in the sample sound libraries corresponding to different scenarios have different priorities.