发明名称 |
SIGNAL SWITCHING DEVICE, SIGNAL DISTRIBUTION DEVICE, DISPLAY DEVICE, AND SIGNAL TRANSMISSION SYSTEM |
摘要 |
A signal switching device including an interface having a video signal communicating unit, a DDC and an HPD, controlling connected device, or being controlled by connected device. A switcher (2) includes a switch (30) for selecting video signal input, a DDC (26c) for reading information from output destination device, a microcomputer (33) for reading information indicating a physical address of switcher (2) and a status of the output destination device through DDC (26c), and a DDC (22a) and a DDC (22b) for outputting information to a plurality of input source devices. The microcomputer (33) stores the physical address of the switcher (2) and above-mentioned information into an EDID memory (32) and reads the above-mentioned information out of the EDID memory (32) and outputs through the DDC (22a) and the DDC (22b). |
申请公布号 |
EP1646227(B1) |
申请公布日期 |
2016.08.31 |
申请号 |
EP20040747707 |
申请日期 |
2004.07.12 |
申请人 |
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. |
发明人 |
YAMADA, MASAZUMI;IITSUKA, HIROYUKI |
分类号 |
H04N5/775;H04N5/268;H04N5/44;H04N5/85;H04N21/41;H04N21/4363 |
主分类号 |
H04N5/775 |
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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