Abstract: The present application provides a method and apparatus for signal transmission, and a method and apparatus for signal reception, where the method for signal transmission is applied to an active stylus, including: phase encoding information to be transmitted using a preset phase signal, to obtain an encoded signal; and transmitting a stylus tip signal, where the stylus tip signal comprises the encoded signal. The present application can increase amount of information transmitted between the active stylus and a touch control screen in a limited duration.

Abstract: The present disclosure provides a detection circuit and an electronic device. The detection circuit includes a driving circuit, a cancelling circuit, and a switching circuit. Each driving module of the driving circuit is coupled to a detection capacitor for charging it; each cancelling module of the cancelling circuit is coupled to the detection capacitor to perform capacitance cancellation through two directions; each cancelling module of the cancelling circuit is coupled to the switching module to perform conversion of a capacitive signal and then output. The present disclosure can improve a detection accuracy of the capacitor.

Abstract: The present application provides a method and apparatus for signal transmission, and a method and apparatus for signal reception, where the method for signal transmission is applied to an active stylus, including: phase encoding information to be transmitted using a preset phase signal, to obtain an encoded signal; and transmitting a stylus tip signal, where the stylus tip signal comprises the encoded signal. The present application can increase amount of information transmitted between the active stylus and a touch control screen in a limited duration.

Abstract: Provided are a capacitance detection circuit (200). The capacitance detection circuit (200) is used for detecting capacitances of N capacitors to be detected, and includes: a reference capacitor, at least N?1 first front end circuits (210) for converting capacitance signals of the capacitors to be detected into first voltage signals and performing differencing on the first voltage signals, at least one second front end circuit (220) for converting capacitance signals of a capacitor to be detected and a reference capacitor into second voltage signals and performing differencing on the second voltage signals, and a processing circuit (230); and the processing circuit (230) determines a capacitance value of each of the N capacitors to be detected according to a first differential signal output by each of the first front end circuits (210) and a second differential signal output by each of the second front end circuits (220).

Abstract: A device for calculating trapping parameters by measuring short-circuit current decay under a reverse bias voltage, including: a vacuum chamber, an experiment table, a lower electrode, a shielding layer, an upper electrode, a direct current charging module, a switch, a short-circuit measuring system, and a computer. The experiment table, the lower electrode, the shielding layer, the test sample, and the upper electrode are disposed from the bottom up in that order inside the vacuum chamber. The upper electrode is connected to the direct current charging module via the switch. The upper electrode and the lower electrode are electrically connected via the short-circuit measuring system. The short circuit or the detrapping current measuring circuit is selectively electrically connected under the control of the selective switch. The reverse bias voltage source and the microammeter are connected in series.

Abstract: A method, computer program product, and system are provided for multi-threaded video encoding. The method includes the steps of generating a set of motion vectors in a hardware video encoder based on a current frame of a video stream and a reference frame of the video stream, dividing the current frame into a number of slices, encoding each slice of the current frame based on the set of motion vectors, and combining the encoded slices to generate an encoded bitstream.