System and method for clock synchronization for USB sink device

Details System and method for clock synchronization for USB sink device System and method for clock synchronization for USB sink device

2006-01-31

2006-01-31

Chin, Stephen (Department: 2634)

Pulse or digital communications

Synchronizers

C375S222000, C375S372000, C375S141000, C710S052000, C710S071000, C710S300000, C710S057000, C713S375000, C713S400000, C713S502000, C709S248000, C348S415100, C370S468000

Reexamination Certificate

active

06993102

ABSTRACT:
In a method for adaptive synchronization of a data sink device to a data source device coupled by a USB, data is received and stored in a buffer of the sink device at an average data rate representative of the data rate of the source device. A data level for the buffer is determined based on input packet size and output packet size. An accumulated data level for the buffer is compared with a threshold level. A clock frequency for the sink device is corrected when the accumulated data level exceeds the threshold level.

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