Audio/video synchronization with no clean points

Details Audio/video synchronization with no clean points Audio/video synchronization with no clean points

2007-12-25

2007-12-25

Dastouri, Mehrdad (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C386S349000, C386S349000, C386S349000

Reexamination Certificate

active

10206159

ABSTRACT:
A computing system that has access to a streamed multimedia sample that is stored on a storage medium applies a zero-based presentation timestamp numbering scheme to the data packets of the multimedia sample, on-the-fly, and after each seek operation. After seeking to a desired starting point, the computing system reads ahead a maximum number of data packets within each media stream of the multimedia sample. A smallest timestamp (normalizing presentation timestamp) is identified and then subtracted from the timestamps of the data packets that are transmitted to the appropriate rendering devices, thereby creating appropriate presentation timestamps for the data packets for synchronizing the playback of the multimedia sample.

REFERENCES:
patent: 6714720 (2004-03-01), Lightstone et al.
patent: 6744815 (2004-06-01), Sackstein et al.
patent: 7106943 (2006-09-01), Katayama et al.
patent: 2004/0028042 (2004-02-01), Srinivasan et al.
IEEE Broacast, Cable and Consumer Society, “IEEE Transactions on Broadcasting”, 7 pgs., vol. BC-28, No. 1, Mar. 1982.

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