Multiple language character generator

Details Multiple language character generator Multiple language character generator

G - Physics

09

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375/12

G09G 3/00 (2006.01) G09G 1/02 (2006.01) G09G 5/24 (2006.01)

Patent

CA 1191978

ABSTRACT A method and apparatus are disclosed for address- ing a character generator memory containing symbols common to two or more languages in a common area of the character generator memory. Symbols which are special to the particular language being displayed are stored in one of a plurality of special symbol areas of the character generator memory. One of the special symbol areas contiguous with the common area is identified as a default symbol area. The proper special symbol area of the character generator memory is selected by comparing the high order bits of a display character code with compare bits to determine whether a different special symbol area of the character generator memory is to be substituted for the default area contiguous with the common area. If the compare bits indicate that a different special area of the character genera- tor is to be substituted, the high order bits of the display character code are not directly used to address the character generator memory but are replaced by sub- stitution bits to access that special symbol area unique to the language being displayed.

408698

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