Broadcast channel substitution method and apparatus
US5389964A · kind A · utility
100Cited by
42References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17345
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Each of a plurality of households includes a channel substitution unit which receives a normal spectrum of television channel signals and at least one substitute channel signal. The substitution unit of each household, upon command from a control arrangement, replaces a channel of the normal television channel spectrum with the substitute channel and distributes the resulting spectrum, comprising the original normal spectrum of television channel signals with one substituted channel, over a distribution medium such as an in-house distribution cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.