发明名称 |
FERNSEHVERTEILUNGSNETZWERK. |
摘要 |
A cable television distribution network has a central store and control unit 1 connected to a number of main transmission lines 2 from which are tapped spurs 3 linked to domestic television receivers (of which only one, 4, is shown). In operation, the central unit 1 sends command signals in teletext format down the main transmission lines 2 to operate on either the receiver 4 or a remote device (via the receiver 4) e.g. keyboard 5, heating system 6 or security system 7; also the unit 1 can process any signals returning from receiver 4 (including any originating from the remote devices) and take appropriate action. |
申请公布号 |
AT20994(T) |
申请公布日期 |
1986.08.15 |
申请号 |
AT19830304995T |
申请日期 |
1983.08.30 |
申请人 |
THORN EMI PLC |
发明人 |
BARNES, BARNARD THOMAS PETER;TOPPING, DOUGLAS RANDALL PETER |
分类号 |
H04N7/088;H04N7/10;H04N7/173 |
主分类号 |
H04N7/088 |
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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