Fast channel switching in TV broadcast systems
US8953511B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2008 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Jun 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6405
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a technique for supporting a fast channel switching in broadcast systems or similar systems for the distribution of media data, for example mobile TV data, in a point-to-multipoint (‘PTM’) fashion. A method embodiment of the technique for supporting a fast channel switching in a system (100) comprising multiple PTM primary channels is performed in a transmitter (102) and comprises the steps of transmitting pictures (P) on each of the multiple PTM primary channels; and transmitting channel switching information (‘CSI’) items on a secondary channel for supporting a fast channel switching, wherein each CSI item allows a determination of an intra-coded picture of one of a pair of primary channels at a receiver side based on a picture of the other of the pair of primary channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.