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:
Feb. 12, 2002
Filed:
Sep. 02, 1997
Applicant:
Inventors:
Steven M. Domer, Mesa, AZ (US);
Robert C. Cichomski, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 9/73 ;
U.S. Cl.
CPC ...
H04N 9/73 ;
Abstract
A circuit and method color balance pixel signals (V ) on-the-fly in an image capturing system ( ). The pixel signals are amplified in a programmable gain amplifier ( ) whose gain is set by the ratio of a programmable capacitor ( ) to a fixed capacitor ( ). Control data (CONTROL) sets the capacitance of the programmable capacitor by enabling switches ( ) that enable binary weighted capacitors ( ). The control data adjusts the gain of the programmable amplifier as each pixel signal is applied, so that the pixel signals of all primary colors are amplified in the same programmable gain amplifier.