H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 1/00 (2006.01) H04N 1/04 (2006.01) H04N 1/393 (2006.01) H04N 1/50 (2006.01)
Patent
CA 2041402
ABSTRACT OF THE DISCLOSURE A facsimile system which produces variable resolution and size images on a reproduction medium is disclosed. A timing means produces two signals which control resolution in a first direction. The first signal controls release of pixels from a memory buffer to modulate the beam intensity of a cathode ray tube while the second signal controls the sweep in the dfirst direction of the electron beam of the CRT. Resolution and size in a second direction is controlled by repeating lines of image data until the desired resolution is achieved. Hardware savings in the facsimile can be achieved by connecting a direct memory access controller to a graphics microprocessor through the host post of the graphics microprocessor and by using alternating banks of memory for storage of image data.
Rothe Alvin R. Jr.
Shaklee Kerry L.
Sienna Imaging Inc.
Smart & Biggar
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