Image output system for outputting multi-level information store

Details Image output system for outputting multi-level information store Image output system for outputting multi-level information store

1990-06-14

1992-03-24

Boudreau, Leo H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340729, 382 22, G09G 114

Patent

active

050992317

ABSTRACT:
An image output system includes a memory for storing multi-level information which describes each pixel of a binary image when the binary image is scanned in a main scanning direction, where the multi-level information has a first value at a black transition point where a pixel changes from white to black and has a second value at a white transition point where a pixel changes from black to white, a counter for keeping a count, a decoder for decoding the multi-level information read out from the memory, where the decoder outputs a value indicating black when the count of the counter is greater than or equal to one, and a controller for controlling an operation timing of the decoder in synchronism with reading of the multi-level information from the memory. The controller scans the memory to read the multi-level information from the memory and supplies the read multi-level information to the decoder. The decoder increments the count of the counter by one when the multi-level information has the first value and decrements the count of the counter by one when the multi-level information has the second value.

REFERENCES:
patent: 4068224 (1978-01-01), Bechtle et al.
patent: 4847607 (1989-07-01), Schoon
patent: 4857904 (1989-08-01), Schoon
patent: 4967376 (1990-10-01), Katsura

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