Video indexing protocol
US6064438A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1996 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Aug 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4884
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method and apparatus for transmitting information with a video signal. At least one client application creates a message to be transmitted to a receiver. The client application transmits the message to a data encoder and the encoder receives the message and other messages from other client applications. The encoder transforms the message and the other messages into packets and multiplexes them into a bitstream to be encoded with a video programming signal. The multiplexing is performed according to priorities assigned to the at least one client application and the other client applications. The encoder transmits the bitstream to a video encoder to transmit the bitstream with the video programming signal in order to be received by a decoder. The decoder can then decode the information from the video signal and transmit the information to at least one decoder client application. The client applications may include: a status application which transmits a status information (e.g. time references) at regular intervals; a program application which transmits descriptive information of the video programming synchronized with the video signal (e.g. program markers and…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.