Optical sensing circuit and optical sensing method

• Main Authors: CHEN JINGMIN, HU YAOSHENG
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2022
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention provides an optical sensing circuit and an optical sensing method. The optical sensing circuit comprises a first photosensitive unit, a second photosensitive unit, an arithmetic unit and a control unit. The first photosensitive unit and the second photosensitive unit provide sensing current during a photosensitive period. The arithmetic unit generates a combined current according to the sensing current during the photosensitive period. The control unit generates a first sensing value and a second sensing value according to the combined current. According to the optical sensing circuit and the optical sensing method, the sensing value can be effectively generated, and the circuit area of the optical sensing circuit can be reduced. 本发明提供一种光学感测电路及光学感测方法。光学感测电路包括第一感光单元、第二感光单元、运算单元及控制单元。第一感光单元以及所述第二感光单元在感光期间提供感测电流。运算单元在感光期间根据感测电流产生合并电流。控制单元根据合并电流产生第一感测数值及第二感测数值。本发明的光学感测电路及光学感测方法，可有效地产生感测数值，并且可降低光学感测电路的电路面积。