Image data processor for converting input image data into output image data suitable for a lower resolution output device
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United States of America Patent
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Aug 29, 1995
Issued Date -
N/A
app pub date -
May 9, 1994
filing date -
Jul 26, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image data processor includes a first memory which stores a binary image data of M1 pixels and M2 pixels in the longitudinal and lateral directions and a second memory which stores a multivalued image data of N1 pixels and N2 pixels in the longitudinal and lateral directions. The image data processor is provided with a spatial operation means for operating the binary image data of the first memory with respect to an operation area size of L1, L2 (L1, L2 being a natural number satisfying L1.gtoreq.M1/N1, L2.gtoreq.M2/N2) to generate the multivalued image data of the second memory, an address means for outputting positional information in the first area corresponding to the pixel position in the second area when the image data in the first area is to be reduced to 1/K1, 1/K2 in the longitudinal and lateral directions (1
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