Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1991-06-14
1994-02-15
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358426, 3582614, 382 56, H04N 1419
Patent
active
052871932
ABSTRACT:
A parallel processing architecture of run length codes in an image processing system wherein the run-length codes are represented by the run-start addresses and the run-end addresses of black runs. The image data is loaded into this processing architecture by unit of words. A run detector in the parallel processing architecture detects if there are run-start or run-end bits in a word. When there are run-start bits or run-end bits present in a word, this parallel architecture employs a run-start row address generator and a run-end row address generator, which are all logic circuits and comprise a data flow hardware architecture, to generate run-start row addresses and run-end row addresses in parallel without the CPU intervening. A ripple counter is utilized to derive the crossing count parameter by counting the total number of black runs in a row of image data.
REFERENCES:
patent: 4800441 (1989-01-01), Sato
patent: 4885576 (1989-12-01), Pennebaker
patent: 5008951 (1991-04-01), Koshi
patent: 5038381 (1991-08-01), Nelson
patent: 5067023 (1991-11-01), Kim
Coles Sr. Edward L.
Industrial Technology Research Institute
Lee Thomas D.
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