Method of generating timestamps for isochronous data

Details Method of generating timestamps for isochronous data Method of generating timestamps for isochronous data

2005-05-17

2005-05-17

Ton, Dang (Department: 2666)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395620, C370S503000, C370S522000, C375S354000

Reexamination Certificate

active

06895009

ABSTRACT:
A method of generating timestamps for isochronous data includes locking a data stream time and an isochronous network time to a local clock signal such that a bi-directional mapping may be made between the two time domains. Timing information is extracted from both IEEE 1394 based data packets and a conventional house reference signal in order to obtain scale and offset factors that exist between the two signals. The scale and offset factors are applied to a generated video clock signal in order to predict a future video time in terms of IEEE 1394 time.

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Richard C. Lau, Synchronous Techniques for Timing Recovery in BISDN, Feb./Mar./Apr. 1995, 9 pages, IEEE Transactions on Communications, Nos 2/3/4, Pt III, New York, US.

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