Power cutting device for terminal units of CATV system
US4439784A · kind A · utility
267Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1980 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Sep 26, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a CATV system, power supplies of television sets associated with all terminal units are cut in response to an instruction contained in a down-data signal supplied by a central facility of the system. It is possible to cut the power supplies of the television sets, selectively and periodically, by incorporating address informations in the down-data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.