发明授权
- 专利标题: Multi-gray level display apparatus and method of displaying an image at many gray levels
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申请号: US841389申请日: 1997-04-30
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公开(公告)号: US6020869A公开(公告)日: 2000-02-01
- 发明人: Itsuo Sasaki , Yasoji Suzuki , Hirofumi Kato , Isao Arita , Toshio Yanagisawa , Kazuyoshi Yamamoto , Hiroyoshi Murata , Hiroyuki Hamagawa
- 申请人: Itsuo Sasaki , Yasoji Suzuki , Hirofumi Kato , Isao Arita , Toshio Yanagisawa , Kazuyoshi Yamamoto , Hiroyoshi Murata , Hiroyuki Hamagawa
- 申请人地址: JPX Kawasaki
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JPX Kawasaki
- 优先权: JPX5-252922 19931008; JPX6-127405 19940609; JPX6-127406 19940609; JPX6-127407 19940609; JPX6-127408 19940609
- 主分类号: G09G3/20
- IPC分类号: G09G3/20 ; G09G3/36 ; G09G3/28 ; G09G3/30 ; G09G5/10
摘要:
A multi-gray level display designed to display multi-gray level images free of flicker or the like, by using a small number of voltages. The display comprises a first gray-level pattern generating circuit 311 for generating a first gray-level pattern which acquires a gray level during m frame periods, a second gray-level pattern generating circuit 321 for generating a second gray-level pattern which acquires another gray level during n frame periods (n is a positive integer greater than m), and a selection circuit 341 for selecting and outputting one of the preset voltages, in accordance with an output from the first gray-level pattern generating circuit 311 or the second gray-level pattern generating circuit 321 when the input multi-gray level display data corresponds to a gray level of either the first gray-level pattern or the second gray-level pattern.
公开/授权文献
- US5273072A Flow passages for control valves 公开/授权日:1993-12-28