ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,726,699, issued on Sept. 1, was assigned to WEIHAI HUALING OPTO-ELECTRONICS Co. LTD. (Weihai, China).
"Contact image sensor" was invented by Li Jiang (Weihai, China), Xiaowei Han (Weihai, China), Yonghui Lin (Weihai, China) and Pengfei Dai (Weihai, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A contact image sensor is provided, including: a control unit configured to receive output pulses from an encoder, where the control unit includes a comparator configured to compare the output pulses with a preset scanning cycle stored in the register to obtain an illumination control signal; an illumination unit configured to illuminate an object to be det...