"""Channel guide"" automatically activated by the absence of program information"
US5161019A · kind A · utility
106Cited by
18References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1990 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Jun 29, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8153
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A "channel guide" system, including a picture-in-picture processing unit for displaying an array of images corresponding to respective channels or auxiliary televisions signals on a display screen is automatically activated when the video signal currently being processed by the receiver no longer contains program information (e.g., either does not contain valid video information, or represents a uniform screen). In a VCR, the "channel guide" system is automatically initiated in response to the detection of the end of tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.