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.

Date of Patent:
Apr. 27, 2004

Filed:

Jun. 16, 2003
Applicant:
Inventors:

Carl J. Ruggiero, Tigard, OR (US);

Alan L. Lasneski, Turner, OR (US);

Assignee:

InFocus Corporation, Wilsonville, OR (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ; G06K 9/68 ; H03D 3/24 ;
U.S. Cl.
CPC ...
G06K 9/00 ; G06K 9/68 ; H03D 3/24 ;
Abstract

A digital sampler generates a digital video signal by digitally sampling an analog video signal based on a pixel clock signal. The analog signal comprises a static image. A signal generator generates the pixel clock signal based on a reference signal for the analog video signal and a delay signal. A delay controller generates the delay signal at a plurality of levels. A histogram circuit generates a pair of histograms for each of the plurality of levels of the delay signal, compares each pair of histograms for a difference value, and identifies a pair of histograms having a least difference value. Each histogram comprises occurrences of color values in a given frame of the digital video signal.


Find Patent Forward Citations

Ruggiero, Carl. (2004). Noise reduction through comparative histograms (U.S. Patent No. 6728402). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6728402

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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