Method and apparatus for reducing overhead associated with content playback on a multiple channel digital media server having analog output
US6360368B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1997 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Aug 1, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2385
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for delivering analog data on demand from a multiple channel digital media server are provided. A digital data stream is admitted to a media server in response to a user selecting a program for playback. A data structure is initialized and maintained for the admitted digital data stream, the data structure controlling the conversion of the admitted digital data stream to an analog data stream on the converter channel. The data structure initialization comprises initializing a state of the admitted digital data stream and a control bit cache flag at a first requested state change for the admitted digital data stream, typically a play command issued by the user. A number of control bits of a converter channel are also initialized using the converter control channel at a first requested state change of the admitted digital data stream. The data structure prevents the reinitialization of the control bits of the converter channel during state changes of the admitted digital data streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.