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. 28, 2006
Filed:
Jan. 18, 2002
Toru Aoki, Shiojiri, JP;
Keijiro Naito, Shiojiri, JP;
Toru Aoki, Shiojiri, JP;
Keijiro Naito, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The present invention provides an image processing circuit having a D/A converter that converts input image data Da to an analog signal to generate an image signal VID. The output range of the D/A converter is controlled by an output-range control signal CTLout having a different signal level according to the type of a liquid-crystal display panel used. Therefore, a range where the signal level of the image signal VID is changed can be adjusted according to the type of the liquid-crystal display panel. Consequently, even when an image-signal processing circuit is used with one of a plurality of types of liquid-crystal display panels having different V-T characteristics, since the data values of input image data Da can be assigned to a desired applied-voltage range, high-definition images can be displayed.