Multiformat transport stream demultiplexor
US6731657B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The preferred embodiment of the present invention provides an improved receiver that can receive and process many different data types in addition to decoding MPEG-2 transport streams. The preferred embodiment minimizes hardware complexity by using the same loaders for both MPEG-2 and alternative stream data. The preferred embodiment utilizes a bypassable synchronizer and a bypassable packet parser to allow alternative data streams to be sent to system memory for decoding by a the host processor. When receiving MPEG-2 transport streams, the bypassable synchronizer and bypassable packet parser are used to synchronize and filter the MPEG-2 transport stream. The parsed MPEG-2 streams are then loaded into a packet buffer and passed to the video and audio decoders. When non-MPEG-2 stream data is provided, the bypassable synchronizer and bypassable packet parser instead forward the data to the packet buffer without performing synchronization or filtering. There, the non-MPEG-2 stream data is loaded into system memory. In memory, the non-MPEG-2 data can be decoded by the CPU and then passed onto the video and audio decoders. Thus, by selectively bypassing synchronizer and packet parser, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.