发明授权
- 专利标题: Column electrode driving circuit for a display apparatus
- 专利标题(中): 用于显示装置的柱电极驱动电路
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申请号: US634591申请日: 1990-12-27
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公开(公告)号: US5166670A公开(公告)日: 1992-11-24
- 发明人: Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
- 申请人: Shiro Takeda , Takafumi Kawaguchi , Makoto Takeda
- 申请人地址: JPX Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX1-342119 19891227
- 主分类号: G09G3/20
- IPC分类号: G09G3/20 ; G09G3/36
摘要:
An improved column electrode driving circuit can drive a matrix type display apparatus without necessitating that digital signals be transmitted between partial column electrode driving circuits. Each of the partial column electrode driving circuits is allocated with a number. In each of the partial column electrode driving circuits, a shift register shifts a sample signal to sequentially output it from a plurality of outputs. At each time when a predetermined number of clock pulses have been counted, a count signal is produced. When the shift direction is set to the right direction, a signal indicating the allocated number is produced. When the shift direction is set to the left direction, a signal indicating a number, which is obtained by subtracting the allocated number from a specified number, is produced. When this number and the clock pulse count number satisfy a predetermined relationship, the sample signal is output.
公开/授权文献
- US5947815A Air register filtering system 公开/授权日:1999-09-07
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