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:
Oct. 24, 2006
Filed:
Mar. 19, 2004
Applicant:
Charles Douglas Murphy, Evanston, IL (US);
Inventor:
Charles Douglas Murphy, Evanston, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Inverters are efficient array-internal threshold detectors or comparators in digital imaging systems which use time-to-threshold A/D conversion, particularly CMOS image sensor arrays. The inverters compare sensor outputs to implicit inverter thresholds, with inverter outputs switching on threshold crossings. The inverters can have constituent transistors of with minimum size. Alternatively, non-minimum transistor dimensions can be selected to obtain desired threshold levels. Other logic circuits can also act as threshold detectors.