Synchronizing multiple system clocks

Details Synchronizing multiple system clocks Synchronizing multiple system clocks

2010-03-16

2011-11-15

Pham, Chi (Department: 2471)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C709S248000

Reexamination Certificate

active

08059688

ABSTRACT:
Techniques are disclosed for synchronizing multiple clock sources of a system, and may include: determining time of a first clock at a first and second time instants; determining time of a second clock at a third time instant occurring between the first and second time instants, and a fourth time instant occurring after the second time instant; and determining a clock offset between the first and second clocks based on the determined times. The first and/or second clocks may be adjusted based on the clock offset to synchronize clock operation. This adjusting can be used, for instance, to synchronize operation of an audio and/or video component operating according to the first clock with an audio and/or video component operating according to the second clock. The techniques may further include determining if the clock offset is valid (e.g., based on detection of perturbing events or difference between a clock's times).

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