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.

Date of Patent:
Apr. 01, 2003

Filed:

Jun. 06, 2000
Applicant:
Inventors:

Hiroyuki Mano, Chigasaki, JP;

Toshio Tanaka, Yokohama, JP;

Tsutomu Furuhashi, Yokohama, JP;

Masaaki Kitajima, Hitachiota, JP;

Toshio Futami, Mobara, JP;

Masaki Mega, Mobara, JP;

Shigeyuki Nishitani, Ebina, JP;

Naruhiko Kasai, Fujisawa, JP;

Kohji Takahashi, Mobara, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 ; G09G 5/10 ; G09G 5/02 ;
U.S. Cl.
CPC ...
G09G 3/36 ; G09G 5/10 ; G09G 5/02 ;
Abstract

A liquid crystal halftone display system including a tone generator which, for pixels having P tones of K tones (1≦P≦K), alternately outputs first N-bit tone display data and second N-bit tone display data in successive frames at one of a first phase and a second phase. Within a block of pixels, the tone generator alternately inverts the phase of the N-bit tone display data at successive first pixels having different ones of the P tones within the block of pixels beginning at a left side of the block of pixels, and alternately inverts the phase of the N-bit tone display data at successive pixels having a same one of the P tones within the block of pixels beginning at the left side of the block of pixels.


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