Communications TV monitoring and control system
US4057829A · kind A · utility
131Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1975 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Aug 6, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A communications control system applicable to an existing master antenna television (MATV) system normally installed in a building, or CATV systems that use special entertainment feature inputs including movies and/or sporting events and special services on a controlled pay or non-pay basis, as desired. The system employs one-way intelligence transmission from TV set locations to a central processor receiver and opposite direction program transmission in a selective control monitored mode with minimal additional equipment requirements over those of a basic TV cable system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.