9results about "Pulse descrimination" patented technology

The demodulation circuit includes a waveform regulator, a first counter, a second counter, and an SR latch. The waveform regulator generates a regulated modulation signal according to a pair of differential isolated modulation signals, which is generated according to a modulation of an input data signal with a carrier clock signal. The first counter counts cycles of the regulated modulation signal so as to generate a set signal. The second counter counts cycles of a reference clock signal so as to generate a reset signal. The SR latch includes a set terminal for receiving the set signal, a reset terminal for receiving the reset signal, and an output terminal for outputting a demodulated output signal. The SR latch is triggered by the set signal to pull up the demodulated output signal, and is triggered by the reset signal to pull down the demodulated output signal.

An apparatus and a method for facilitating a first frequency filtering and a second frequency filtering together with non-reciprocal frequency conversion for electromagnetic isolation.

This application relates to duty cycle corrector circuits and related devices and methods. One device includes an integrator circuit, an amplifier circuit, and an electrically controllable switch. The integrator circuit is configured to provide an integrator signal that substantially indicates the integration of a corrected clock signal. The amplifier circuit is configured to deactivate in response to detecting that an input clock signal has been deactivated. The amplifier circuit includes a first amplifier input terminal and a second amplifier input terminal. The electrically controllable switch is configured to selectively electrically connect the first amplifier input terminal to the second amplifier input terminal in response to detecting that the input clock signal has been deactivated. A method for correcting the duty cycle of an input clock signal includes adjusting the corrected duty cycle of the corrected clock signal in response to a first error signal and a second error signal from the amplifier circuit.

This invention discloses a slope detection circuit, relating to the field of integrated circuit technology. The circuit includes: a signal detection circuit, a comparison feedback circuit, and a charge discharge circuit. The output terminal of the signal detection circuit is connected to the inverting input terminal of the comparison feedback circuit, and the output terminal of the comparison feedback circuit is connected to the control terminal of the charge discharge circuit and an external bus chip. The signal detection circuit is used to convert the slope of the input signal into a voltage change at the detection node, generating a voltage change signal. The comparison feedback circuit is used to receive the voltage change signal and, based on the voltage change signal, generate a rising edge detection signal or a falling edge detection signal. The charge discharge circuit is used to discharge the charge accumulated at the detection node in response to the rising edge detection signal or the falling edge detection signal.

The application relates to the technical field of vehicle control, in particular to a filtering method for window motor ripple and a vehicle. The method comprises the following steps: acquiring a current ripple corresponding to a window motor of a vehicle, wherein a plurality of code segments are arranged in the current ripple, each code segment has a corresponding pulse width; determining a target code segment in which a pulse jump occurs, and determining a first pulse width threshold and a second pulse width threshold based on the pulse width; acquiring a reference code segment located before the target code segment and a reference pulse width of the reference code segment; analyzing the size relationship among the reference pulse width, the first pulse width threshold and the second pulse width threshold, and performing corresponding filtering operation on the current ripple based on the size relationship to obtain a filtered current ripple. Through filtering of the pulse jump code segment, the application can obtain accurate ripple counting, and the performance of the entire window ripple anti-pinch algorithm is improved.

This invention provides a method and edge detection circuit for detecting the soft switching of a switching transistor. The method, applied to the edge detection circuit, includes: driving the edge detection circuit based on a pulse width modulation (PWM) signal; detecting the soft switching pulse of the switching transistor based on the edge detection circuit; wherein the soft switching pulse characterizes the relationship between soft switching and switching current; obtaining soft switching information of the switching transistor by detecting the soft switching pulse through a microcontroller; and adjusting the switching current of the switching transistor based on the soft switching information. In this method, the soft switching status of the switching transistor can be detected by the edge detection circuit and closed-loop feedback can be achieved, ensuring that the MOSFET always operates under optimal soft switching conditions.

The present disclosure relates to a gray zone prevention circuit with indirect signal monitoring. For example, a gray zone prevention circuit includes a first gain stage circuit including a first input terminal and a first output terminal, the first gain stage circuit amplifying a feedback signal received at the first input terminal and generating an amplified signal at the first output terminal; a second gain stage circuit including a terminal coupled to the first output terminal for receiving the amplified signal and a second output terminal, wherein the second gain stage circuit is configured to generate a monitored signal based on the amplified signal; a feedback circuit coupled between the second output terminal and the first input terminal and configured to convert the monitored signal to the feedback signal; and a comparator circuit including a monitoring node coupled to the first output terminal for receiving the amplified signal, wherein the comparator circuit is configured to indirectly monitor the monitored signal via the amplified signal.

Aspects relate to mechanisms for detecting a voltage level (414) on a data communication interface (404) between a slave device (402) and a host device. Based on the detected voltage level (414), the slave device (402) may respond to the host device on the data communication interface (404) at the detected voltage level. In some examples, the slave device (402) may include a circuit configured to toggle between a first voltage level and a second voltage level to provide one of the first voltage level or the second voltage level corresponding to the detected voltage level on the data communication interface (404).