发明授权
US5457488A Method and apparatus for controlling array of light-emitting elements
失效
用于控制发光元件阵列的方法和装置
- 专利标题： Method and apparatus for controlling array of light-emitting elements
- 专利标题（中）： 用于控制发光元件阵列的方法和装置
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申请号： US225724申请日： 1994-04-11
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公开(公告)号： US5457488A公开(公告)日： 1995-10-10
- 发明人: Yukio Nakamura , Hiroshi Furuya , Takatoku Shimizu , Kazuo Tokura , Mio Chiba , Kengo Ohtaka , Takeyuki Yanagibashi , Takashi Ishizaki
- 申请人： Yukio Nakamura , Hiroshi Furuya , Takatoku Shimizu , Kazuo Tokura , Mio Chiba , Kengo Ohtaka , Takeyuki Yanagibashi , Takashi Ishizaki
- 申请人地址： JPX Tokyo
- 专利权人： Oki Electric Industry Co., Ltd.
- 当前专利权人： Oki Electric Industry Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-084914 19930412; JPX5-209406 19930824
- 主分类号： H04N1/40
- IPC分类号： H04N1/40 ; H04N1/405 ; G01D15/10
摘要：
An array of light-emitting elements is switched on and off to produce a graded-intensity image on a photosensitive medium. Each light-emitting element is controlled by M-bit data representing the intensity of one image pixel, where M is a fixed integer greater than one. M strobe signals are generated for non-overlapping time intervals of different lengths, to strobe the M data bits for each light-emitting element. When strobed, each data bit switches its corresponding light-emitting element on or off. Image intensity depends on the total amount of time for which each light-emitting element is switched on.
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