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. 24, 2003
Filed:
Jul. 17, 1998
Applicant:
Inventors:
Steven M. Domer, Mesa, AZ (US);
Jeffery E. Bills, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/235 ; H04N 3/14 ;
U.S. Cl.
CPC ...
H04N 5/235 ; H04N 3/14 ;
Abstract
An imaging system ( ) and method compensate for different amplitudes of pixel signals generated by photoactive devices in an optical sensor ( ) whose responses to projected light are not uniform. The sensor is divided into regions ( ) such that the response of the photoactive devices within a region are substantially equal. A processing circuit ( ) compensates for different responses among different regions with a programmable gain amplifier ( ) whose gain is dynamically adjusted when pixel signals generated in different regions are received.