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:
Jun. 29, 2021
Filed:
Dec. 12, 2014
Tianjin University, Tianjin, CN;
Kaiming Nie, Tianjin, CN;
Suying Yao, Tianjin, CN;
Jiangtao Xu, Tianjin, CN;
Zhiyuan Gao, Tianjin, CN;
Zaifeng Shi, Tianjin, CN;
Jing Gao, Tianjin, CN;
Tianjin University, Tianjin, CN;
Abstract
The present invention relates to technical field of analog integrated circuit design. TDI function is better realized by CMOS image sensor and it improves scanning frequency of the CMOS-TDI image sensor and extends application range of TDI technique. To this end, the present invention proposes a technical solution of high scanning frequency CMOS-TDI image sensor. The pixels include a photodiode, an operational amplifier, integration capacitors Cand Cof the same capacitance, an offset voltage removing capacitor C, and plural switches S-S. The anode of the photodiode is connected to a zero voltage ground wire, while the cathode thereof is connected to one end of the switch S. The other end of the switch Sis connected to a reference voltage V. The above pixels are cascaded and an output end of the last pixel is connected to a column-parallel ADC through a readout switch Read. The invention mainly applies to analog integration circuit design.