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.:

US 9838629 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 05, 2017

Filed:

Jun. 05, 2015
Applicants:

Stmicroelectronics (Research & Development) Limited, Marlow, Buckinghamshire, GB;

The University Court of the University of Edinburgh, Edinburgh, GB;

Inventors:

Shatabda Saha, Edinburgh, GB;

John Kevin Moore, Edinburgh, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/3745 (2011.01); H04N 5/369 (2011.01); H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H04N 5/3698 (2013.01); H01L 27/14641 (2013.01); H04N 5/37457 (2013.01);
Abstract

A pixel array includes pixels arranged in columns. A pair of column lines is provided for each column of pixels. A current source circuit is coupled to each pair of column lines. The current source circuit provides current to the pair of column lines in a first mode of operation such that when one column line in a pair of column lines is being provided with a first current the other column line in the pair of column lines is being provided with a second current which is less than the first current.


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