Methods and systems for synchronizing data streams

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

2005-08-16

2005-08-16

Nguyen, John B (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

C348S500000, C348S512000, C713S400000, C713S600000

Reexamination Certificate

active

06930620

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: 6594773 (2003-07-01), Lisitsa et al.
patent: 2002/0099870 (2002-07-01), Miller et al.
patent: 2002/0111980 (2002-08-01), Miller et al.

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