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.:

US 7671829 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 02, 2010

Filed:

Oct. 05, 2005
Applicants:

Noriaki Sugawara, Tokyo, JP;

Kouichi Koga, Tokyo, JP;

Inventors:

Noriaki Sugawara, Tokyo, JP;

Kouichi Koga, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
Abstract

A driving method for a color liquid crystal display which drives the color liquid crystal display based on a video red signal, a video green signal and a video blue signal by independently applying a gamma compensation to a clamped video red signal, a clamped video green signal and a clamped video blue signal in gamma compensating circuits in order to make suitable to a red transmittance characteristic, a green transmittance characteristic and a blue transmittance characteristic. With this operation, it is possible to carry out an optimal gamma compensation suitable to a characteristic of the color liquid crystal display and to remove a gradation batter occurring in a specific color.


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Sugawara, Noriaki. (2010). Driving method and driving circuit for color liquid crystal display (U.S. Patent No. 7671829). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7671829

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