Picture distribution service system
US6154632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1996 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | May 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture distribution service system carries out a distribution control of picture information service in a broadband transit switching network having a hierarchical structure. The system comprises a plurality of transit switches for switching transit lines through which picture information is transmitted from a source and distributed by a center switch, a first trunk part provided for each of the transit switches for distributing the picture information from the center switch to the transit lines, a plurality of subscriber switches for switching subscriber lines through which the picture information from each of the transit lines is transmitted to a plurality of subscriber terminals, and a second trunk part provided for each of the subsriber switches for distributing the picture information from each of the transit switches to the subscriber lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.