Dedicated channel interactive cable television system
US4264924A · kind A · utility
Inventor
Key dates
| Filing date | Aug 13, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Aug 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/454
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interactive cable television system, such as a one-way system, in which a plurality of subscribers are simultaneously provided with multi-information television programming and regular television programming independently selectably directly receivable by the individual subscribers on the television reception channels of a conventional multichannel television receiver. The multi-information television programming comprises a plurality of different program information message signals related in time and content to each other and each transmitted at a different associated communication frequency which corresponds to a different television reception channel associated frequency, with regular television programming being simultaneously provided at one or more further different television reception channel frequency. Video information corresponding to labels to be dynamically assigned to the various television reception channels associated with the multi-information television programming is provided in the multi-information packet, which labels are varied in accordance with the content of the packet. A plurality of successive individual packets and the various program information me…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.