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Screen generating apparatus, screen generating method, and image processing apparatus

  • US 8,254,002 B2
  • Filed: 02/03/2009
  • Issued: 08/28/2012
  • Est. Priority Date: 02/08/2008
  • Status: Active Grant
First Claim
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1. A method of generating a screen for an image processing apparatus, which reproduces a multi-gradation image in one pixel using a Pulse Width Modulation technique, the method comprising:

  • inputting image data with a first resolution;

    controlling a pulse width and reference position data; and

    generating a screen with a second resolution with respect to the image data using two reference vectors based on the reference position data, the second resolution being enhanced from the first resolution using the reference position data,when the screen is formed with the second resolution, if subpixels within one pixel are allocated to different halftone cells, a position signal of a subpixel having a high priority of pixel growth being preferentially allocated to a corresponding pixel.

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