Television burst service
US4422093A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1983 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Jan 27, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/17318
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A visual service that employs the full facilities of a television communication channel on an intermittent basis. A user chooses certain still picture television frames that contain subject matter of interest to him, and conveys these choices to a central transmitting facility. These are then contiguously assembled for transmission to the user, perhaps with frames of other users as well, in a "burst" of such video frames. These frames are stored at the user's location, and can be brought up for viewing as often as desired. A vertical interval code may be used in the system for frame identification and to reproduce only what the user has chosen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.