Display control driver

Details Display control driver Display control driver

G - Physics

09

G

G09G 5/24 (2006.01) G09G 3/00 (2006.01) G09G 3/20 (2006.01)

Patent

CA 2061515

ABSTRACT This display control driver stores a test display pattern in a character generator ROM storing in advance a display pattern to be displayed on a display device. This test display pattern consists of a pattern arranged to alternate in a combination of light-up and light-out of all mutually neighboring segments in row and column directions. By displaying this test display pattern on the display device, visual check of a short or open circuit in a display signal is possible. The character generator ROM stores a test display pattern consisting of a pattern arranged to alternately repeat row by row light-up and light-out of all neighboring display segments in the row direction and a test display pattern consisting of a pattern arranged to alternately repeat line by line light-up and light-out of all neighboring display segments in the column direction. With these test display patterns, a short or open circuit in the display signal can be checked visually.

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