Display controller for dot matrix display

Details Display controller for dot matrix display Display controller for dot matrix display

1992-04-16

1994-10-18

Weldon, Ulysses

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345127, 345168, G09G 300

Patent

active

053572645

ABSTRACT:
When display data having a smaller vertical number of pixels than a vertical number of pixels of a display is to be displayed, a display status can be switched during the execution of any application software. When a display selection switch receives a switch command, it outputs a selection signal directly to a display controller, an address generator in the display controller selects one of display modes to the display in accordance with the selection signal. When the display data having the smaller vertical number of pixels than the vertical number of pixels of the display is to be displayed, a user can freely select the display mode without interruption of a CPU during the execution of any application software.

REFERENCES:
patent: 4875036 (1989-10-01), Washizuka et al.
patent: 4935731 (1990-06-01), Takebe et al.
patent: 5068651 (1991-11-01), Takebe et al.

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