Auxiliary data insertion in a transport datastream
US6788710B1 · kind B1 · utility
131Cited by
12References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/43622
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital device, such as a digital VTR, receives and records an MPEG compatible datastream. On play back, the DVTR inserts packetized auxiliary information, such as on-screen display information, into the transport datastream for transmission to another digital device, such as a television receiver. Time stamps in the MPEG compatible datastream are unaffected by the insertion of the auxiliary information. The DVTR VSB modulates the datastream to provide sufficient bandwidth for the auxiliary information in the datastream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.