Boots – shoes – and leggings
Patent
1989-04-20
1990-10-09
Harkcom, Gary V.
Boots, shoes, and leggings
358296, 358474, 358494, 358497, G06F 1562
Patent
active
049624644
ABSTRACT:
A computer controlled photoplotter includes a row of LED's (light emitting diodes) mounted to a light head positioned parallel to the film width. The light head is part of a light head assembly which is moved parallel to the film length. At the end of each pass the lighthead is indexed widthwise a short distance. During each lengthwise pass the LED's are illuminated at appropriate positions to expose the film at those positions according to the image being plotted. The computer receives the image data in vector form--typically end points, widths of lines and particular shapes are provided. The vector data is rasterized for only those columnar positions underlying the LED's for each pass. That is, columnar rasterization is accomplished by determining the desired state of each LED at each position along a columnar path. This data is stored in a first memory area; as the light head moves along one pass, the data for the next pass is computed and stored in a second memory area in the manner of a dual-ported buffer.
REFERENCES:
patent: 4240117 (1980-12-01), Wellendorf et al.
patent: 4247872 (1981-01-01), Wada et al.
patent: 4268870 (1981-05-01), Kitamura et al.
patent: 4435064 (1984-03-01), Tsukada et al.
patent: 4566015 (1986-01-01), MacKenzie
patent: 4636871 (1987-01-01), Oi
patent: 4730219 (1988-03-01), Oshikoshi et al.
Henzi Max P.
Matoic Marius
Harkcom Gary V.
Lavenir Technology, Inc.
Zimmerman Mark K.
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