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:
Nov. 23, 2004
Filed:
Oct. 31, 2000
Suhas R. Kulhalli, Bangalore, IN;
Subhashish Mukherjee, Bangalore, IN;
Sindhuja Sridharan, Irving, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The voltage outputs of a charge coupled device (CCD) are examined to determine the hot pixels. A black pixel is determined to be a hot pixel if the voltage level associated with the black pixel exceeds the voltage level of an adjacent (e.g., previous) pixel by a threshold. If the present black pixel is determined to be a hot pixel, a previous black pixel is substituted for a present black pixel in the computation of the offset. However, if the first black pixel is determined to be a hot pixel, the second black pixel is used in lieu of the first black pixel. The offset is iteratively adjusted by an amount proportionate to an error determined based on the black pixels. The adjustment may be clipped by a threshold to avoid bands in the image.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile