Anpec Electronics Corporation

Yuan-Hung Wang

Yun-Li Liu

Ke-Horng Chen

Wei-Chih Wang

Te-Sheng Chen

Chieh-Wen Cheng

Che-Chang Chang

Jing-Min Chen

Shin-Hao Chen

Shen-Yu Peng

Yi-Ping Su

Yung-Ning Yang

A system of driving and controlling a motor is provided. A main controller adjusts frequencies of all or some of pulse waves of an initial pulse width modulation signal to output a pulse width modulation signal according to instruction information. The adjusted frequency of each of the pulse waves is equal to a first preset frequency or a second preset frequency. When a motor driver drives the motor to stably rotate, the motor driver decodes each of the pulse waves having the first preset frequency into a first message and decodes each of the pulse waves having the second preset frequency into a second message. The motor driver arranges and combines all of the first messages and the second messages that are decoded from the pulse waves to obtain the instruction information. The motor driver executes an operation instructed by the instruction information.

System of driving and controlling motor

A system and a method for demodulating a frequency shift keying signal are provided. The system includes a power transmitter and a power receiver. The power transmitter generates a frequency shift keying signal including a power signal and a power modulation instruction message. The power receiver detects a non-modulation period of the power signal within a waiting time, and then modulates a frequency of the power signal according to the power modulation instruction message to generate a pulse width modulated signal. The power receiver then calculates a full period of the pulse width modulated signal and then subtracts the non-modulation period from the full period of the pulse width modulated signal to obtain an undemodulated signal.

System and method for demodulating frequency shift keying signal

A fast-locking phase locked loop and a fast locking method are provided. The fast locking method includes dividing a frequency of an oscillation signal by a preset divisor to output a divided signal, detecting a frequency difference between the divided signal and a reference signal, tracking whether a divided frequency of the divided signal falls within a locked frequency range or not, if not, tracking the divided frequency, and if yes, locking the divided frequency, detecting a divided phase difference between a divided phase of the divided signal and a reference phase of the reference signal, recording the phase difference as a tracking reference phase difference, tracking a next divided phase according to the tracking reference phase difference, and determining whether the divided phase falls within a locked phase range, and if not, tracking the divided phase, and if yes, locking the divided phase.

Fast-locking phase locked loop and fast locking method

The present disclosure illustrates a bidirectional wireless charging device. The bidirectional wireless charging device comprises a transceiver chip which is configured to receive a switch signal. The transceiver chip comprises a power stage circuit and a control module. The power stage circuit is coupled to a coil, and the control module is coupled to the power stage circuit. The power stage circuit is configured to output a voltage to the coil, or to receive an induced voltage from the coil. The control module is configured to control the transceiver chip to enter a power mode or a charging mode based upon the switch signal. When the transceiver chip enters the power mode, the transceiver chip provides the voltage to the coil. When the transceiver chip enters the charging mode, the transceiver chip receives the induced voltage from the coil and charges a power storage unit.

Bidirectional wireless charging device and bidirectional wireless charging system

A power management system coupled to a speaker module includes a monitor module for measuring a current signal and a voltage signal of the speaker module to obtain a real-time impedance information of the speaker module; a reception module for receiving a time-domain audio analogy signal to be transformed into a frequency-domain audio digital signal; a prediction module for generating a power prediction information according to an initial audio information, the real-time impedance information and the audio digital signal; a control module for generating a control signal according to the audio digital signal and a human hearing model information; and a power adjustment module for outputting an adjustment audio signal to the speaker module according to the power prediction information, the audio digital signal and the control signal, so as to perform a broadcast operation of the speaker module.

Growing community of inventors

Miaoli County, Taiwan

Yuan-Hung Wang