Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1994-05-09
1995-08-29
Herndon, Heather R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358445, 395109, G06T 340
Patent
active
054468310
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<K1.ltoreq.L1, 1<K2.ltoreq.L2), and a coefficient setting means for setting a correcting coefficient of the spatial operation means corresponding to K1, K2.
REFERENCES:
patent: 5125045 (1992-06-01), Murakami et al.
patent: 5245444 (1992-09-01), Hashimoto
Nankou Takahiko
Yamashita Haruo
Herndon Heather R.
Matsushita Electric - Industrial Co., Ltd.
Smith Michael S.
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