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Image processing apparatus wherein the image data is reduced before the image data is stored in a memory or a buffer

  • US 6,181,833 B1
  • Filed: 05/04/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 05/08/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for processing an image comprising:

  • a line buffer memory for storing a set of image data which includes plural groups of image data, each group of image data being obtained from a line of pixels arranged in a primary scanning direction which is perpendicular to a secondary scanning direction;

    an analog-to-digital converter for converting analog image signals to digital image data for supply to the line buffer memory;

    a writing reducer arranged between the analog-to-digital converter and the line buffer memory for reducing the image in the secondary scanning direction only by deleting selected groups of image data before storing the set of image data in the line buffer memory; and

    a reading reducer-enlarger for enlarging the image in the secondary scanning direction and for reducing or enlarging the image in the primary scanning direction at the time of reading out the stored set of image data from the line buffer memory.

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