Dynamically and on-demand selected ancillary data over compressed multimedia packets without bandwidth expansion
US7881342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jul 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for providing ancillary data over compressed multimedia packets. Ancillary data may be added to encoded or compressed packets without increasing the bandwidth required to transmit the packets over a transmission medium. After transmission, the ancillary data can be recovered and the packets restored to their original form without any loss of data or damage to original content. The ancillary data can be presented to a user on-demand, or in response to an event. The content of the ancillary data can also be correlated to the type of event that initiated the delivery or to the content of the encoded or compressed packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.