发明名称 |
Quadrature coding circuit for a computer mouse |
摘要 |
The control of a screen cursor with a mechanical mouse uses a quadrature coding system with an edge triggered digitising circuit (740). The coding system interprets two square wave signals generated by movement of the mouse . The digitising circuit is based around an analogue comparator (930) and a passive time delay (910)circuit.
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申请公布号 |
DE19913337(A1) |
申请公布日期 |
1999.11.25 |
申请号 |
DE1999113337 |
申请日期 |
1999.03.24 |
申请人 |
PRIMAX ELECTRONICS LTD., HSI CHIH |
发明人 |
LIU, SHU-MING |
分类号 |
G01D5/244;G06F3/033;(IPC1-7):G06F3/033;G06K11/08;G06K11/18 |
主分类号 |
G01D5/244 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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