Digital color matrixing circuit

Details Digital color matrixing circuit Digital color matrixing circuit

1991-05-14

1994-02-08

Chilcot, Jr., Richard E.

Facsimile and static presentation processing

Natural color facsimile

358527, 382 17, H04N 146

Patent

active

052852717

ABSTRACT:
An image scanning device, including CCDs provides digital color image data representing an image. A 3-by-3 matrix multiply logic is connected to the image scanning device for modifying or transforming the intensities of each individual color encoded in the digital color image data. The matrix multiply logic has a multiplier and an accumulator. The multiplier provides intermediate products by performing one-stage multiplications between the intensity values for each pixel and the coefficients of the 3-by-3 matrix. The one-stage multiplications are time multiplexed. The accumulator accumulates the intermediate products from the multiplier for each pixel to thereby provide optimized color values for each pixel. The multiplier implements specialized adders to perform the one-stage multiplications.

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