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Clock data recovery circuit, apparatus including same and method for recovery clock and data

  • US 10,355,700 B2
  • Filed: 10/03/2018
  • Issued: 07/16/2019
  • Est. Priority Date: 11/20/2017
  • Status: Active Grant
First Claim
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1. A clock data recovery circuit that receives an input data signal including an embedded clock, the clock data recovery circuit comprising:

  • a clock recovery circuit configured to generate a recovery clock signal from the input data signal based on a first window signal and to generate a second window signal synchronized with the recovery clock signal from the first window signal;

    a delayed locked loop circuit configured to detect a unit interval corresponding to one bit of the input data signal based on the recovery clock signal and to generate a third window signal by delaying the second window signal based on the unit interval; and

    a window generating circuit configured to generate the first window signal based on the third window signal and the recovery clock signal, so that a phase of the recovery clock signal is identical to a phase of the third window signal.

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