Remultiplexing audio/video PES streams from an MPEG transport system
US6801536B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4344
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Two data streams derived from a transmitted data stream are remultiplexed with a coarser granularity for storage in data blocks which assure that corresponding portions of each of the two data streams are made available in the same data block. The data streams are buffered in queues from which sub-blocks are transferred as buffer sections having sizes corresponding to relative bit rates therein in the order the sub-blocks are filled, preferably using bytes to interrupt processing. Thus, the sub-blocks will be grouped into data blocks in accordance with the correspondence of the data streams such as the time correspondence of audio and video data. As applied to digital video data transmissions, a system time clock (STC) value is stored in a sub-block header and/or a data block header and, using a look-up table or other arrangement for estimating a storage location, a data block can be retrieved from storage in accordance with a target STC value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.