G - Physics – 06 – F
Patent
G - Physics
06
F
375/15
G06F 3/153 (2006.01) G09G 3/00 (2006.01)
Patent
CA 1048181
ABSTRACT Display devices are known in which a character is displayed in a raster segment or a cathode ray tube as a pattern of dots. However, such devices have not permitted a character to be vertically displaced by only a fraction of a raster segment and the invention disclosed has that capability. In the invention disclosed a refresh memory stores information about a character to be displayed, including its address, and also information regarding raster modification. The raster modification information is fed to a raster modi- fication circuit where it is combined with raster count information so that the dots normally displayed in,say, line 0 to 3 of one raster segment are shifted down to be displayed in lines 4 to 8 and the dots of lines 5 to 8 of the downwardly adjacent segment are shifted up to be dispalyed in lines 0 to 4.
238463
Inoue Tadanari
Shinbata Takashi
LandOfFree
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