CATV System
US4455570A · kind A · utility
168Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1981 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Oct 13, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2007/17372
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a cable television system wherein a polling channel is provided for two-way communications between the center and the terminal units, video data signals are transmitted on request from the center to the terminal units during an otherwise idle period in said polling channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.