Invention Patent
- Patent Title: METHOD AND APPARATUS FOR VARIABLE PLAYBACK SPEED OF MULTIMEDIA DATA INTERCHANGE WITHIN A DATA PROCESSING SYSTEM
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Application No.: CA2062136Application Date: 1992-03-02
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Publication No.: CA2062136CPublication Date: 1996-12-03
- Inventor: BONSALL GORDON WILLIAM , CRIPPS ANTONY GEORGE , PASCOE ROBERT AUGUST , PEEK CHARLES LESLIE
- Applicant: IBM
- Assignee: IBM
- Current Assignee: IBM
- Priority: US68338391 1991-04-10
- Main IPC: H04L29/08
- IPC: H04L29/08 ; H04L29/06 ; G06F13/38
Abstract:
The method and apparatus of the present invention may be utilized for the efficient interchange of multimedia data in a data processing system. A sequential data stream is established which includes multiple variable length consecutive sections, each of which includes multiple data samples. Each data sample preferably includes a collection of data and a control structure or header which is utilized to specify a manner of interpreting the collection of data. In the depicted embodiment of the present invention a track collection index is transmitted in conjunction with the sequential data stream and utilized to identify the physical location of various track samples within the data stream. Additionally, a track sequence index is provided which may be utilized to identify the logical order in which the data samples are to be utilized in each selected track to create a multi-media presentation along with an indication of the playback speed to be utilized. This sequential data stream, track collection index and track sequence index are then transmitted throughout a distributed data processing system utilizing various personal computers or intelligent work stations, permitting multimedia data to be efficiently interchanged.
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