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:
Oct. 28, 2008
Filed:
Jul. 13, 2005
Toshiyuki Kasai, Okaya, JP;
Hiroaki JO, Suwa, JP;
Takeshi Nozawa, Suwa, JP;
Hiroshi Horiuchi, Matsumoto, JP;
Toshiyuki Kasai, Okaya, JP;
Hiroaki Jo, Suwa, JP;
Takeshi Nozawa, Suwa, JP;
Hiroshi Horiuchi, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A signal processing unit that generates data signals for controlling gray-scale levels of electro-optical elements includes a first D/A conversion unit that generates gray-scale signals from gray-scale data for designating the gray-scale levels of the electro-optical elements; a storage unit that stores correction data indicating correction values with respect to the gray-scale signals; a second D/A conversion unit that has resolution different from that of the first D/A conversion unit, and that generates correction signals from the correction data stored in the storage unit; and a synthesizing unit that synthesizes the gray-scale signals generated by the first D/A conversion unit with the correction signals generated by the second D/A conversion unit to generate the data signals.