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. 24, 2006
Filed:
May. 15, 2000
Applicants:
Ryo Ishii, Suwa, JP;
Akihiko Ito, Suwa, JP;
Inventors:
Ryo Ishii, Suwa, JP;
Akihiko Ito, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A signal applied to a data line is binarized to provide a high-quality gray scale presentation. To provide eight gray scales, for example, one field is divided into seven subfields in accordance with gray scale characteristics of an electro-optical device. Pixels are turned on or off by writing a high-level or a low-level signal thereon in a first subfield. In subsequent subfields, high-level or low-level signals are written depending on the gray scale level of each pixel to control the ratio of the on period of the pixels to the off period of the pixels on one field.