Transparent addressing for CRT controller

Details Transparent addressing for CRT controller Transparent addressing for CRT controller

1980-07-28

1983-04-05

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340709, 340814, 340798, 340707, G09G 116

Patent

active

043792936

ABSTRACT:
A controller for a CRT is disclosed having processor terminals for connecting the controller to a processor, CRT terminals for connecting the controller to a CRT, a refresh address generator for generating refresh addresses so that a display on the CRT can be refreshed, an update address generator for generating update addresses so that information in a refresh memory can be updated, refresh memory terminals for connecting the update address generator and the refresh address generator to a refresh memory, and a control circuit for exclusively connecting the update address generator and the refresh address generator to the refresh memory terminals so that only one of the generators has control of the refresh memory at a time.

REFERENCES:
patent: 3997891 (1976-12-01), Iwamura et al.
patent: 4203107 (1980-05-01), Lovercheck
patent: 4274081 (1981-06-01), Nomura et al.

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