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Image processing apparatus and method of the same, and storage medium

  • US 6,917,449 B2
  • Filed: 09/20/2002
  • Issued: 07/12/2005
  • Est. Priority Date: 07/09/1998
  • Status: Expired due to Fees
First Claim
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1. An image processing apparatus comprising:

  • a clock signal generation circuit adapted to generate a clock signal;

    a frequency modulation circuit adapted to modulate a frequency of a generated clock signal; and

    a detection circuit adapted to detect an operation state of said frequency modulation circuit in accordance with a comparison result between an output of said clock signal generating circuit and an output of said frequency modulation circuit, wherein said detection circuit detects a stopping of a modulation function of said frequency modulation circuit when the comparison result between an output of said clock signal generation circuit and an output of said frequency modulation circuit indicates a value equal to or lower than a reference value.

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