System for interactively distributing information services
US6253375A · kind A · utility
211Cited by
29References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17336
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interactive information distribution system includes service provider equipment for generating an information stream that is coupled to an information channel and transmitted to subscriber equipment. The service provider also generates a command signal that is coupled to a command channel and transmitted to the subscriber equipment. The service provider also receives information manipulation requests from the subscriber via a back channel. A communication network supporting the information channel, command channel and back channel is coupled between the service provider equipment and the subscriber equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.