Detection and indication of premium channel availability
US7921441B2 · kind B2 · utility
1Cited by
22References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2004 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Oct 23, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a television schedule guide which includes a detector for determining whether a previously scrambled program is unscrambled. If a previously scrambled program is momentarily unscrambled due to promotional efforts by the program provider, the system will visually distinguish the program on the guide, and a viewer may tune to or record the program from the guide. The view may also subscribe to the program provider through the guide during the promotional period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.