Merger and multiple translate tables in a buffered printer

G - Physics – 06 – F

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354/236.1

G06F 3/12 (2006.01) G06F 7/32 (2006.01) G06F 13/00 (2006.01) G06K 15/12 (2006.01)

Patent

CA 1044606

MERGER AND MULTIPLE TRANSLATE TABLES IN A BUFFERED PRINTER Abstract of the Disclosure In a buffered printer each line of graphic code bytes provided by a translate table is entered into a page buffer in a selected location determined by a channel command associated with a previously entered line. Each "write and no space" command accompanying a line of graphic code bytes stored in the page buffer results in the immediately following line of graphic code bytes being stored in the same location. The two different lines are combined in accordance with a merge algorithm. A "write and space one line" command accompanying a line of graphic code bytes stored in the page buffer results in the next line of graphic code bytes being stored in the next available storage location within the page buffer. The lines of graphic code bytes as assembled are thereafter applied, one line at a time, to a character generator module to effect printing of the various characters represented by the graphic code bytes. The printing arrangement may be provided with plural translate tables to provide for printing of different characters in the same line using the same character code byte. Two or more lines, each containing the same character code byte, are directed by the associated channel commands into different ones of the translate tables for conversion of the char- acter code byte into different graphic code bytes in the two resulting lines of graphic code bytes. The two lines of graphic code bytes are merged into a single line in the page buffer, following which the two different graphic code bytes are applied to the character generator module to effect printing of the two different characters represented thereby. -1-

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