Systems and methods for channel switching
US8345743B2 · kind B2 · utility
12Cited by
16References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2007 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Sep 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for video encoding and decoding channel switch frames (CSF) to enable acquisition and re/synchronization of the video stream while preserving compression efficiency is provided. Systems and methods to process multimedia data enabling channel switching are presented. The systems generate a CSF with one or more network adaptation layer (NAL) units as a random access point (RAP) frame. Back-to-back frames are transmitted which include the CSF and a non-RAP frame, each having the same frame ID number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.