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. 19, 1999
Filed:
Apr. 26, 1996
Yasuyuki Kudo, Yokohama, JP;
Hiroyuki Mano, Chigasaki, JP;
Tsutomu Furuhashi, Yokohama, JP;
Toshio Futami, Mobara, JP;
Satoru Tsunekawa, Higashimurayama, JP;
Tatsuhiro Inuzuka, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A scanning voltage driving device suitable for a liquid crystal panel with plural output terminals, the scanning voltage driving device producing a 2-level selection voltage to plural scanning electrode groups which drive the liquid crystal panel according to a value of an orthogonal function data, the 2-level selection voltage having a positive polarity and a negative polarity with respect to a center point being a non-selection voltage, includes orthogonal function producing means for producing the orthogonal function data from input synchronous display signal groups, scanning line selecting means for creating a scanning line selection signal from the synchronous display signal groups to indicate an output terminal for the selection voltage, and voltage selecting means for selectively outputting a voltage amount the 2 levels of the selection voltages and the non-selection voltage every output terminal according to the value of the scanning line selection signal and the value of the orthogonal function data, the scanning line selecting means dividing one frame period into plural virtual block periods and then repeatedly creating the scanning line selection signal which sequentially selects all the scanning electrodes to be selected for the block period every plural scanning electrodes.