Methods and systems for synchronizing data streams

Details Methods and systems for synchronizing data streams Methods and systems for synchronizing data streams

2005-10-18

2005-10-18

Nguyen, John B (Department: 2819)

Electrical computers and digital processing systems: multicomput

Computer-to-computer protocol implementing

Computer-to-computer data streaming

C348S500000, C348S512000, C713S400000, C713S600000, C709S236000

Reexamination Certificate

active

06957266

ABSTRACT:
Methods and systems are provided for synchronizing various time-stamped data streams. The data streams can be synchronized to another data stream or to a point of reference such as a reference clock. In one embodiment, synchronization processing takes place in association with a filter graph comprising multiple filters. The filter graph is configured to process multiple timestamped data streams for rendering the data streams in accordance with data stream timestamps. A synchronization module is provided and is associated with the filter graph queries individual filters of the filter graph to ascertain input timestamp-to-output timestamp mappings. The module computes adjustments that are to be made to output timestamps in order to synchronize the data streams, and then instructs queried filters to adjust their output timestamps in accordance with its adjustment computations.

REFERENCES:
patent: 5913038 (1999-06-01), Griffiths
patent: 6594773 (2003-07-01), Lisitsa et al.
patent: 6647210 (2003-11-01), Toyoda et al.
patent: 6680753 (2004-01-01), Kahn
patent: 6774919 (2004-08-01), Miller et al.

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