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Clock data recovery circuit, data transfer device for display device, and data transfer method for display device

  • US 20110148851A1
  • Filed: 12/20/2010
  • Published: 06/23/2011
  • Est. Priority Date: 12/22/2009
  • Status: Abandoned Application
First Claim
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1. A clock data recovery circuit comprising:

  • a sampling circuit that samples input data by 2×

    over sampling;

    a frequency detection circuit that detects a frequency difference between the input data and a recovery clock, the input data being sampled by the sampling circuit;

    a phase detection circuit that detects a phase difference between the input data and the recovery clock, the input data being sampled by the sampling circuit;

    a voltage control oscillator circuit that outputs the recovery clock to the sampling circuit at least according to the phase difference detected by the phase detection circuit; and

    a frequency detection control circuit that stops an operation of the frequency detection circuit while receiving display data as the input data.

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