Invention Grant
- Patent Title: Adaptive clock recovery with step-delay pre-compensation
- Patent Title (中): 具有延迟预补偿的自适应时钟恢复
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Application No.: US12729606Application Date: 2010-03-23
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Publication No.: US08462819B2Publication Date: 2013-06-11
- Inventor: P. Stephan Bedrosian
- Applicant: P. Stephan Bedrosian
- Applicant Address: US CA San Jose
- Assignee: LSI Corporation
- Current Assignee: LSI Corporation
- Current Assignee Address: US CA San Jose
- Agency: Mendelsohn, Drucker & Associates, P.C.
- Agent Steve Mendelsohn
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04J1/16 ; H04J3/14 ; H04J3/24 ; H04L1/00 ; H04L12/26 ; H04L12/28 ; H04L12/56 ; G01R31/08 ; G06F11/00 ; G08C15/00

Abstract:
An adaptive clock recovery (ACR) subsystem processes an input phase signal indicative of jittery packet arrival times to generate a relatively smooth and bounded output phase signal that can be used to generate a relatively stable recovered clock signal. The input phase signal is also processed to detect and measure step-delays corresponding, for example, to path changes in the network routing of the packets. Step-delay pre-compensation is performed, in which the input phase signal is phase-adjusted, upstream of the ACR subsystem, based on the sign and magnitude of each detected step-delay. As a result, the ACR subsystem is substantially oblivious to the existence of such step-delays.
Public/Granted literature
- US20110164630A1 ADAPTIVE CLOCK RECOVERY WITH STEP-DELAY PRE-COMPENSATION Public/Granted day:2011-07-07
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