Montage Technology (kunshan) Co., Ltd.

Suzhou Aview Image Technology Co., Ltd.

Crystal Pharmatech Co., Ltd.

Liang Zhang

Yanfeng Zhang

Minhua Chen

Hongxin He

Fang Zhao

Jinfu Chen

Nengdong Wang

Kang Wei

A duty cycle calibration circuit includes delay, temperature compensation, differential, and phase adjustment units. The delay adjustment unit receives a single-ended input clock signal to be calibrated and an adjustment voltage and outputs a single-ended clock signal adjusted by the adjustment voltage. The temperature compensation adjustment unit determines the adjustment voltage output by the temperature compensation adjustment unit, and provides the adjustment voltage to the delay adjustment unit to eliminate the influence of the temperature on the duty cycle. The differential adjustment unit converts the single-ended clock signal into a differential clock signal, and adjusts delay of the differential clock signal. The phase adjustment unit receives the adjusted differential clock signal to adjust its phase and converts it into a single-ended output clock signal after phase adjustment, and makes rising and falling edges of the single-ended output clock signal correspond to rising edges of the adjusted differential clock signal respectively.

Duty cycle calibration circuit and method

The invention discloses a multi-channel image capture system including a secondary image information transmission channel, a secondary FPGA chip and a signal conversion chip. The secondary image information transmission channel has a camera interface unit, a primary FPGA chip and a cache unit. The camera interface unit includes several camera interfaces and is connected to an external camera. The primary FPGA chip receives, decodes, and then writes the image data captured by the camera to the cache unit, and reads the image data from the cache unit according to a read command from the secondary FPGA chip and transmits it to the secondary FPGA chip. The secondary FPGA chip acquires the image data from the cache unit based on the priority and the capturing order and transmits it to the signal conversion chip. The signal conversion chip is connected to the terminal and transmits the image data to the terminal.

Multi-channel image capture system

Growing community of inventors

Suzhou, China

Liang Zhang