Graphic data compression

Details Graphic data compression Graphic data compression

G - Physics

06

F

354/236.1

G06F 3/12 (2006.01) G06K 15/10 (2006.01)

Patent

CA 1193027

GRAPHIC DATA COMPRESSION Abstract of the Disclosure Code compression for a dot printer having a printhead with a vertical line of print elements reduces requirements for space in font memory and is readily translated and acted upon. In each eight-bit byte, microprocessor interprets three bits as coding mode commands and the other five bits as content information, primarily as numbers. Printer control code modes are: black in sequence, complete white, white in sequence, repeat column, map bytes (bit-for-bit), and offset. The content information number is stored in a register and printing in the form defined by the code mode is executed the number of times as stored in the register.

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