Televison programming information system
US4449249A · kind A · utility
Inventor
Key dates
| Filing date | Sep 27, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Sep 27, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Up to date television programming information along with a commercial is provided for a viewer of television independent of the viewer's television set. Such is accomplished by a radio either AM or FM which broadcasts first and second subcarrier signals carrying respectively a commercial and up to date television program information. The commercial and up to date television program information repeats after given set time periods, the later being updated every one-half hour. A viewer need only operate a specially designed radio receiver at a convenient location anytime he wishes to know which programs are coming up on his television set. The receiver is designed so that it will always play the broadcast commercial before the television program so that the system can be appropriately financed with no cost to the viewer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.