发明申请
- 专利标题: Driver circuit for an LCD display
- 专利标题(中): 驱动电路用于LCD显示
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申请号: US10926417申请日: 2004-08-25
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公开(公告)号: US20050017941A1公开(公告)日: 2005-01-27
- 发明人: Helmut Simon , Roland Morent
- 申请人: Helmut Simon , Roland Morent
- 专利权人: Diehl AKO Stiftung & Co. KG
- 当前专利权人: Diehl AKO Stiftung & Co. KG
- 优先权: DE10208073.9 20020225
- 主分类号: G09G3/36
- IPC分类号: G09G3/36
摘要:
In spite of the enormous market-originating price pressure, even large-scale domestic appliances can be fitted with LCD displays for user guidance. The expensive universal driver circuits (LCD controller ICs) with their many unused functionalities are replaced by simple logic gate circuits synchronized by a host processor for the exchange of image data between the V-RAM and the display, for cyclically successively counting through the pixels (that is to say columns) per image line and the lines per image representation of the display. As now an address in the V-RAM and thus a matrix position in the image of the display corresponds to each counting position per image, and the memory is not occupied with image data continuously but only in a corresponding section. This however is not a problem because large image data memories are available very inexpensively in comparison with an expensive LCD controller IC.
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