Display controller

Details Display controller Display controller

1989-03-28

1992-08-11

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340814, G09G 302

Patent

active

051383055

ABSTRACT:
A CRT display unit and a flat panel type display unit are switched for use in a computer system. Both the CRT display unit and the flat panel type display unit display an image stored in an image memory in accordance with display parameters set in an I/O register. A parameter memory stores a set of display parameters for each of display modes of the CRT display unit and the flat display unit. When switching between the display units is requested via a keyboard, transfer control means transfers display parameters for the newly designated display unit from the parameter memory to the I/O register. A display circuit causes the newly designated display unit to display an image in accordance with the display parameters stored in the I/O register and the image data.

REFERENCES:
patent: 4574279 (1986-03-01), Roberts
patent: 4684942 (1987-08-01), Nishi et al.
patent: 4760387 (1988-07-01), Ishii et al.
patent: 4841289 (1989-06-01), Kambayashi et al.
patent: 4918436 (1990-04-01), Joary
patent: 4926166 (1990-05-01), Fujisawa et al.

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