Method and apparatus for facilitating two way oral communications utilizing a television cable system
US5640196A · kind A · utility
41Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Sep 29, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/173
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video and two-way telephone services are provided via a cable distribution network. Video signals and one group of trunked telephone channels are coupled in the forward direction to the cable distribution network. A second group of trunked telephone channels are extracted, in the reverse direction, from the cable distribution network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.