Robust MPEG-2 multiplexing system and method using an adjustable time stamp
US7298741B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Jan 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/23608
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for robust Motion Picture Experts Group (MPEG-2) multiplexing information using an adjustable time stamp. The method comprises: accepting a plurality of digital programs; encoding each program into frames; generating a decoding time stamp (DTS) and a corresponding presentation time stamp (PTS), measured with respect to a program clock reference (PCR) for each frame; generating a packetized elementary stream (PES) packet, with a PES header including the PCR, DTS, and PTS, for each frame; time division multiplexing (TDM) the PES packets into a MPEG-2 transport stream; at the time of insertion into the MPEG-2 transport stream, comparing the DTS and PTS values to the PCR value in each header; modifying the DTS value in the PES header in response to the comparison; and, transmitting the MPEG-2 transport stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.