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:
Jan. 05, 2010
Filed:
Apr. 20, 2005
Yasuyuki Kudo, Kamakura, JP;
Akihito Akai, Yokohama, JP;
Kazuo Okado, Kokubunji, JP;
Toshimitsu Matsudo, Tokyo, JP;
Atsuhiro Higa, Yokohama, JP;
Yasuyuki Kudo, Kamakura, JP;
Akihito Akai, Yokohama, JP;
Kazuo Okado, Kokubunji, JP;
Toshimitsu Matsudo, Tokyo, JP;
Atsuhiro Higa, Yokohama, JP;
Renesas Technology Corporation, Tokyo, JP;
Abstract
A display driver for outputting gradation voltages corresponding to gradation data from an external device to pixels. The display driver includes a generator for generating a plurality of gradation voltages having a plurality of levels based on a reference voltage, and a selector for selecting at least one gradation voltage corresponding to the gradation data from the plurality of gradation voltages generated by the generator. The gradation data includes multi-bits for each color of red, green and blue, and the generator outputs or stops outputting each gradation voltage according to data for color reduction from the external device. The generator stops outputting at least one gradation voltage that is unnecessary for displaying as a result of the color reduction, when the color of the gradation data is reduced according to the data for color reduction.