The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Jun. 08, 2022
Silead Inc., Shanghai, CN;
Zhen Shi, Shanghai, CN;
Shengrong Liu, Shanghai, CN;
Silead Inc., Shanghai, CN;
Abstract
The present disclosure relates to an optical sensing system and an analog-to-digital converter. The optical sensing system includes a ramp signal generator, a digital logic circuit and a plurality of column circuits. The ramp signal generator is configured to generate a ramp signal and transmit the ramp signal to the column circuits. The ramp signal includes a signal of which a signal intensity varies with time, and a signal intensity variation rate of the ramp signal corresponds to an amplification factor of a photosensitive electric signal. Each column circuit is configured to receive photosensitive electric signal, and output a photosensitive gain signal to the digital logic circuit according to ramp signal and photosensitive electric signal. Photosensitive gain signal includes a digital signal corresponding to photosensitive electric signal of which signal intensity is amplified. The digital logic circuit is configured to calculate a digital sampling signal according to photosensitive gain signals.