Time skew correction in data time stamping

Details Time skew correction in data time stamping Time skew correction in data time stamping

2004-06-23

2009-02-17

Nguyen, Brian D (Department: 2616)

Multiplex communications

Channel assignment techniques

Polling

C370S503000

Reexamination Certificate

active

07492785

ABSTRACT:
A method of processing data received at a local system in response to polling a remote device, wherein the local system includes a local clock, the method involving: sending a first poll to the remote device; receiving a response from the remote device to the first poll, the response to the first poll containing data and a time stamp indicating when the remote device responded to the first poll; for the data received in response to the first poll, computing a first time by using both a time that was derived from the local clock for a previous poll of the remote device and also the time stamp contained in the response to the first poll; comparing the computed first time to information that the local system stored in connection with the first poll, wherein the information that the local system stored in connection with the first poll was derived from the local clock; and determining how to process the data received in response to the first poll based on comparing the computed first time to the information that the local system stored in connection with the first poll.

REFERENCES:
patent: 5602992 (1997-02-01), Danneels
patent: 5802082 (1998-09-01), Roppel
patent: 6157957 (2000-12-01), Berthaud
patent: 6347084 (2002-02-01), Hulyalkar et al.
patent: 2003/0086425 (2003-05-01), Bearden et al.
patent: 0 697 774 (1996-02-01), None

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