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US Patent 5526362 - Control of receiver station timing for time-stamped data

US Patent Issued on June 11, 1996
Estimated Patent Expiration Date: Icon_subject March 31, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

The invention provides a method and apparatus for controlling the timing at a receiving station for the receipt of asynchronous data transmitted with a time-stamp. The received data is passed through a buffer to the remainder of the station. A decoder at the receiving station generates an indication of buffer fill level and a local time-stamp is also generated. The output timing for the buffer is controlled by a circuit which is responsive to both a difference value off, received and locally generated time-stamps and to the fill level indication.

Inventors

Assignee

Application

No. 414372 filed on 03/31/1995

US Classes:

370/516, Adjusting for phase or jitter375/371, Phase displacement, slip or jitter correction375/376Phase locked loop

Field of Search

375/371, Phase displacement, slip or jitter correction375/372, Elastic buffer375/373, Phase locking375/376Phase locked loop

Examiners

Primary: Olms, Douglas W.
Assistant: Patel, Ajit

Attorney, Agent or Firm

US Patent References

4811340, Synchronization of asynchronous data signals
Issued on: 03/07/1989
Inventor: McEachern ,   et al.
5260978, Synchronous residual time stamp for timing recovery in a broadband network
Issued on: 11/09/1993
Inventor: Fleischer, et al.
5272728, Preamble length adjustment method in communication network and independent synchronization type serial data communication device
Issued on: 12/21/1993
Inventor: Ogawa
5367545, Asynchronous signal extracting circuit
Issued on: 11/22/1994
Inventor: Yamashita, et al.
5396492Method and apparatus for adaptive clock recovery
Issued on: 03/07/1995
Inventor: Lien

International Class

H04J 003/06

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