Grayscale printing with sliding window memory

Details Grayscale printing with sliding window memory Grayscale printing with sliding window memory

1995-06-22

1997-12-16

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

358300, 358455, 347239, H04N 140, H04N 123, G01D 942

Patent

active

056991681

ABSTRACT:
A method for printing grayscale images. A sliding window memory stores an array of exposure data. The memory is initialized (80) with zero values. The memory is then addressed (82) so that the last row of the array is filled with exposure data. A microimage is then generated based on the exposure data (84). The data in the array is then decremented (86). If the page to be printed is not completed, the array's addresses are rotated (82) so that the data for the first row drops out, the data for other rows is readdressed as the next row, and new data fills the last row.

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patent: 5493322 (1996-02-01), Ng et al.
patent: 5510824 (1996-04-01), Nelson
patent: 5583688 (1996-12-01), Hornbeck

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