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. 31, 2006
Filed:
May. 28, 2002
Applicant:
Jeff Raynor, Edinburgh, GB;
Inventor:
Jeff Raynor, Edinburgh, GB;
Assignee:
STMicroelectronics Ltd., Buckinghamshire, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/76 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is for generating a key from the fixed pattern noise (FPN) of a CMOS image sensor to be used in generating a digital authentication signature. The key may be generated by temporarily disabling the FPN cancellation circuit that is conventionally included in the system, and generating a substantially 'black' image to produce a digitized FPN signal. The key may then be generated from characteristics of the FPN, such as by comparing pairs of pixels, for example.