Li & Cai Intellectual Property (USA) Office
Ghost key detecting circuit and related method
A ghost key detecting circuit includes at least first and second scan lines, at least first and second return lines, a plurality of switch elements, and a level detecting circuit. The level detecting circuit is used for performing level detection upon measured voltage values at the first and second return lines. When a measured voltage value at a return line is greater than or equal to a reference voltage value, the level detecting circuit generates a logic signal for indicating that a switch element corresponding to the return line at a current scan line is turned off. When the measured voltage value is smaller than the reference voltage value, the level detecting circuit generates a logic signal for indicating that the switch element is turned on.
Silitek Electronic (Guangzhou) Co., Ltd. Lite-On Technology Corporation
H
H03M
inventional
Wen-Tong Chiung-Chih Kuo-Fu
Liu Huang Kuo