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Two-dimensional linear interpolation and registration control for a hyperacuity printer

  • US 6,519,055 B1
  • Filed: 03/30/2000
  • Issued: 02/11/2003
  • Est. Priority Date: 10/28/1993
  • Status: Expired due to Fees
First Claim
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1. A hyperacuity printing system, comprising:

  • a memory for storing grayscale image data;

    a recording medium for rendering the grayscale image data as an array of pixels across the recording medium in both a fastscan direction and an orthogonal slowscan direction;

    an output scanning device having a writing device for writing output image data onto the recording medium;

    transformation circuitry for transforming the grayscale input image data into the output image data, the transformation circuitry including a registration controller for determining error compensation values, a phase resolution controller for providing a number for registration control, with the phase resolution controller connected to the registration controller to receive error compensation values and bias the number based on the received error compensation values, and a resampling interpolator for determining an interpolated value of the grayscale input image data that compensates for registration errors, with the resampling interpolator connected to the phase resolution controller to receive the biased number and adjust the interpolated value for determining the output image data; and

    a modulating device for receiving the output image data from the transformation circuitry to drive the output scanning device.

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