发明名称 |
Cable length detection apparatus and method for a keyboarding video mouse switch |
摘要 |
A cable length detection apparatus is provided to detect the length of a cable having at least three pairs of wires for transmitting video signals. The cable length detection apparatus has a signal compressing circuit, a signal converting circuit and a length calculating circuit. The signal compressing circuit compresses an electrical signal into one pair of wires. The signal converting circuit converts the electrical signal transmitted by the pair of wires into a value. The length calculating circuit then calculates the length of the cable according to the value. |
申请公布号 |
US8090553(B2) |
申请公布日期 |
2012.01.03 |
申请号 |
US20090413107 |
申请日期 |
2009.03.27 |
申请人 |
CHEN SUN-CHUNG;ATEN INTERNATIONAL CO., LTD. |
发明人 |
CHEN SUN-CHUNG |
分类号 |
G01B7/02;H01R4/66;H04B3/56;H04N5/08;H04N9/455;H04N17/00 |
主分类号 |
G01B7/02 |
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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