Abstract: Embodiments of the present application provide a wearable device, a wearing detection method and a storage medium. The wearable device includes: a device housing; a capacitive sensor, a processing module and a metal structural component which are provided inside the device housing, where the metal structural component is adhered to the capacitive sensor. The metal structural component is configured to increase an electrostatic induction region of the capacitive sensor; the processing module is configured to: obtain a real-time capacitance value and an inherent capacitance value of the capacitive sensor to ground, determine a real-time difference between the real-time capacitance value and the inherent capacitance value, and determine the wearable device to be in a worn state when the real-time difference is greater than a preset threshold.

Abstract: A capacitance detection circuit, a touch control chip and an electronic device are provided, which could reduce the influence of a display screen noise on capacitance detection. The capacitance detection circuit includes: an amplification circuit, connected to a detection capacitance in a touch screen, and configured to amplify a capacitance signal of the detection capacitance and convert the capacitance signal into a voltage signal, the voltage signal configured to determine the detection capacitance; and a control circuit, connected to the amplification circuit, and configured to control a magnification of the amplification circuit, where a period in which a noise peak of a noise signal of a display screen is located includes consecutive N sub-periods, and a magnification of the amplification circuit in the N sub-periods is inversely proportional to a magnitude of the noise signal in the N sub-periods, N>1.

Abstract: A laser emitting apparatus includes: a drive assembly, a laser emitter, an energy storage module, and a circuit board. The laser emitter is a laser emitter die. An input end of the laser emitter is electrically connected to the energy storage module, and an output end is electrically connected to the drive assembly. The energy storage module is used to generate electrical signals required for driving the laser emitter. The drive assembly is used to output the driving signal to control the energy storage module and the external power supply to output the electrical signal to the laser emitter, so as to enable the laser emitter to emit laser. The drive assembly, the laser emitter, and the energy storage module are fixed on the circuit board, and a ground layer is arranged in the circuit board.

Abstract: Techniques are described for controlling operation of a pixel conversion ADC in a manner that enforces strict timing and synchronization of ramp and clock signaling. Synchronizing techniques can be applied to generate a corrected ramp start signal based on synchronizing a received ramp start signal to an input clocking signal, and to generate a controller clock signal based on synchronizing an input clocking signal to the corrected ramp start signal. The corrected ramp start signal and the controller clock signal can be used to control generation of a ramp enable signal for controlling timing of pixel ramp voltage generation digital pixel conversion counting, and to control generation of an output clocking signal used by the digital pixel conversion counting.

Abstract: A power-on reset circuit, including: a band-gap reference circuit, a current comparator, and a voltage comparison circuit powered by a voltage source; a first output terminal of the band-gap reference circuit connects to a control terminal of the current comparator; a first current input terminal and a second current input terminal of the current comparator receives a first current signal and a second current signal respectively, and an output terminal of the current comparator connects to a control terminal of the voltage comparison circuit; and a first input terminal of the voltage comparison circuit connects to the first output terminal of the band-gap reference circuit, a second input terminal thereof receives a signal indicating a voltage value of the voltage source, an output terminal thereof outputs a reset signal, thereby avoiding occurrence of an error caused by output of the reset signal when the reference generating circuit is unstable.

Abstract: Provided is a fingerprint identification apparatus which includes: a micro lens array; at least one light shielding layer; a pixel unit array; and an array of filter unit groups, where each filter unit group includes at least two filter units which transmit light signals in at least two colors respectively, where the pixel unit array includes a pixel unit group corresponding to the filter unit group, at least two pixel units in the pixel unit group receive a first light signal through the at least two filter units respectively, and a pixel unit except the at least two pixel units receives a second light signal through a transparent region between the at least two filter units, or a pixel unit between pixel unit groups receives the second light signal through a transparent region between the filter unit groups. The apparatus can improve the security of identification without affecting identification effect.

Abstract: An optical sensor module for sensing a face of a person for user identification and authentication, where a face illumination module is provided to use an array of face illumination light sources arranged in a regular array pattern to produce illumination light which may be invisible light such as infrared light and an optical diffraction element that is located to receive illumination light beams from the face illumination light sources and to transfer each illumination light beam from each face illumination light source in the array into a patterned light beam containing illumination light spots.

Abstract: Embodiments of the present disclosure provide methods and apparatuses for detecting an ambient light illuminance and for computing a correction coefficient, and an electronic device. The method for detecting an ambient light illuminance includes: filtering ambient light based on a monochromatic channel, such that a quantum effect curve of the filtered light matches a spectral luminous efficiency curve; and performing photoelectric detection on the filtered light to obtain an illuminance level of the ambient light.

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: Disclosed are a driving circuit, a stylus and an electronic device. The driving circuit includes: a power supply assembly, at least one energy storage capacitor, a switch assembly and a driving electrode. In a driving cycle: the switch assembly is configured to control connections among the power supply assembly, the at least one energy storage capacitor and the driving electrode, so that the driving electrode outputs a first voltage, at least one second voltage and a third voltage, wherein the first voltage and the third voltage are respectively a maximum voltage and a minimum voltage output by the driving electrode, and the sum of energy storage voltages of the at least one energy storage capacitor is less than the first voltage. The driving circuit, the stylus and the electronic device of the embodiment of the present application could reduce a power consumption.

Abstract: Provided are a fingerprint detection apparatus and method and an electronic device, which can improve the detection and identification effect of fingerprint detection when a distance between the optical fingerprint detection apparatus and a display screen changes, thereby improving user experience. The fingerprint detection apparatus is configured to be disposed below a display screen of an electronic device, and includes: a pixel array including a plurality of groups of pixels, the plurality of groups of pixels being configured to respectively receive light signals in multiple directions to obtain multiple images; and a processing unit configured to move the multiple images for combination to form a reconstructed image, and adjust moving distances of the multiple images according to a quality parameter of the reconstructed image to form a target reconstructed image, the target reconstructed image being a fingerprint image of the finger for fingerprint identification.

Abstract: a camera calibration method, apparatus and an electronic device. The method includes: obtaining a calibration board image, where the calibration board image includes a plurality of annular patterns; obtaining an inner edge and an outer edge of each annular pattern in the calibration board image; determining image coordinates of a center point of each annular pattern according to the inner edge and the outer edge of each annular pattern; and determining internal and external parameters of a camera according to the image coordinates and corresponding world coordinates of the center point of each annular pattern. The accuracy of camera calibration is improved.

Abstract: An earbud and a method for implementing a wearing detection and a touch operation are provided. The earbud includes: at least two capacitive wearing sensors arranged at different positions where a head of the earbud is in contact with skin tissues in an ear, and the earbud being determined whether to be in a worn state according to the detection values of the at least two capacitive wearing sensors; a capacitive touch sensor arranged on the head or a stem of the earbud away from the ear and being configured to detect a touch operation; and a detection processing circuit being configured to detect and process capacitance signals detected by the wearing sensors and touch sensor, and the wearing sensors and touch sensor being electrically connected with the detection processing circuit and sharing the detection processing circuit.

Abstract: A DLL circuit that has a programmable output frequency is provided. In various embodiments, the DLL circuit comprises an input configured to receive an input clock defining an input clock period; an output configured to provide a DLL output clock; a delay line configured to receive the input clock, wherein the delay line comprises a plurality of delay stages, each configured to generate one of a plurality of delay line output clocks, each of the delay line output clocks having a phase relative to the input clock based on a delay of the delay line; a clock generation circuit, configured to generate the DLL output clock based on a selected plurality of the delay line output clocks; and a control circuit configured to select which of the delay line output clocks the clock generation circuit uses to generate the DLL output clock.

Abstract: An embodiment of the present application discloses an optical fingerprint identification apparatus and an electronic device, which can improve performance of the optical fingerprint identification apparatus. The optical fingerprint identification apparatus includes: a light detection array; a filter layer, disposed above the light detection array, where the filter layer is integrated with the light detection array in a photosensor chip; a first light blocking layer formed above the filter layer, where the first light blocking layer is provided with a plurality of light passing holes; and a first microlens array disposed above the first light blocking layer, where the first microlens array is configured to converge the optical signal to the plurality of light passing holes of the first light blocking layer, and the optical signal is transmitted to the light detection array through the plurality of light passing holes of the first light blocking layer.

Abstract: A security check system using face ID sensing for secure access to an electronic platform includes a camera. The camera includes an imaging lens configured to form a modulated image of an object positioned in front of the camera. The modulated image of the object includes deviations from an ideal image. The security check system further includes a computer memory configured to store face ID data of an authorized person. The face ID data is generated from one or more modulated images of a live face of the authorized person acquired by the camera during a registration process. The security check system further includes a processing module configured to analyze the modulated image of the object to extract facial signatures, compare the facial signatures to the face ID data, and determine whether the object is the live face of the authorized person based on the comparison.

Abstract: A fingerprint identification apparatus and an electronic device are provided. The fingerprint identification apparatus is used to be disposed under a display screen of an electronic device, including: a sensor chip, where the sensor chip includes a light detecting array and a chip seal ring, and the chip seal ring is disposed around the light detecting array; a light shielding layer, formed on the light detecting array, where the light shielding layer is provided with a plurality of light passing apertures, and the light shielding layer covers an whole region of the light detecting array and at least covers partial region of the chip seal ring; and the fingerprint light signal, returned after reflection or scattering via a finger above the display screen, is transmitted to the light detecting array through the plurality of light passing apertures on the light shielding layer for fingerprint identification.

Abstract: Embodiments of the present disclosure provide a method for switching a Bluetooth connection, a Bluetooth chip, and a Bluetooth device; where the method for switching a Bluetooth connection may be applied to the Bluetooth device. The method includes: establishing, by the Bluetooth device, Bluetooth connections with a first terminal device and a second terminal device; receiving, by the Bluetooth device, a content playing request from the first terminal device, and performing data transmission with the first terminal device; receiving, by the Bluetooth device, a content playing request from the second terminal device, and sending a notification message for suspending data transmission to the first terminal device; suspending, by the Bluetooth device, data transmission with the first terminal device, and maintaining the Bluetooth connection with the first terminal device; and performing, by the Bluetooth device, data transmission with the second terminal device.

Abstract: An electronic circuit is disclosed. The electronic circuit includes a reference voltage generator, which includes a first candidate circuit configured to generate a first candidate reference voltage, a second candidate circuit configured to generate a second candidate reference voltage, and a selector circuit configured to select one of the first and second candidate reference voltages. The reference voltage generator also includes a third circuit configured to generate a power supply voltage based on the selected candidate reference voltage.

Abstract: Provided are a power-on processing method and apparatus of a terminal device, and a terminal device, and the method includes: detecting whether a fingerprint input operation is performed on the fingerprint device, when the operating system of the terminal device is in a non-working state; controlling the fingerprint device to collect fingerprint data corresponding to the fingerprint input operation when it is detected that the fingerprint input operation is performed on the fingerprint device; detecting whether the fingerprint input operation triggers the power button, when it is detected that the fingerprint input operation is performed on the fingerprint device; and transmitting the fingerprint data collected by the fingerprint device to the operating system for security verification, when it is detected that the fingerprint input operation triggers the power button.