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:
Jul. 04, 2000
Filed:
Nov. 14, 1997
Yasuyuki Kudo, Yokohama, JP;
Hiroyuki Mano, Sagamihara, JP;
Tsutomu Furuhashi, Yokohama, JP;
Shinji Uchida, Chiba, JP;
Tomohide Ohira, Mobara, JP;
Tatsuhiro Inuzuka, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Video & Information, Kanagawa-ken, JP;
Abstract
A liquid crystal controller for controlling display of a liquid crystal display device of passive matrix type includes gray scale processing being performed on input data before being written in a frame memory for frame frequency conversion and gray scale processing being performed after the frequency conversion and reading of the data from the frame memory so that an amount of information of display data written in the frame memory can be reduced. Further, since the gray scale display pattern is switched by the same switching frequency as the converted frame frequency, pattern movement and flicker of the gray scale display portions can be reduced.