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:
Sep. 09, 2003
Filed:
Dec. 30, 1998
Applicant:
Inventors:
Zhiliang Julian Chen, Plano, TX (US);
Eugene G. Dierschke, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 3/14 ; H04N 5/335 ;
U.S. Cl.
CPC ...
H04N 3/14 ; H04N 5/335 ;
Abstract
Two methods for suppressing the fixed pattern noise effects of a pixel reset switch by ensuring that the reset NMOS device operates in its linear region. The first approach uses a separate reset switch supply voltage, V , set to at least one threshold voltage below the sensing switch supply voltage, V . The second approach uses a charge pump and level shifter to push the reset gate voltage at least one threshold voltage higher than a supply voltage common to both the reset and sense transistors.