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Angle de-skew device and method thereof

  • US 7,391,930 B2
  • Filed: 12/17/2004
  • Issued: 06/24/2008
  • Est. Priority Date: 12/17/2004
  • Status: Expired due to Fees
First Claim
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1. An angle de-skew device used in an image processing system to rotate a skewed image according to a reference point as rotated center, comprising:

  • a first accumulator circuit to accumulate X coordinate value of a first pixel of the skewed image by a first offset and to output one and upward first accumulation results into the image processing system;

    a second accumulator circuit to accumulate Y coordinate value of a first pixel of the skewed image by a second offset and to output one and upward second accumulation results into the image processing system; and

    a counter connected with the first and second accumulator circuit to control the number of accumulation times of the first and second accumulator circuits;

    wherein the first accumulator circuit includes;

    an adder to accumulate the first offset and output the first accumulation results;

    a delay circuit to receive the first accumulation results from the adder and feed the first accumulation results back to the adder according to a control signal;

    a buffer to receive the first accumulation results from the delay circuit and output the first accumulation results into the image processing system according to the control signal.

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