Data selection circuit for the screen display of data from a per

Details Data selection circuit for the screen display of data from a per Data selection circuit for the screen display of data from a per

1983-09-29

1987-01-27

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340703, 340748, 340750, 340799, G09G 316

Patent

active

046397213

ABSTRACT:
This invention provides a RAM data selection circuit in which the screen data from the graphic display RAM and the text display RAM incorporated in the personal computer are simultaneously outputted and a data selection means adapted to output either of the two screen data preferentially by the dot unit to the monitor TV is provided, thereby rapidly enabling the superimposing of graphic and text data on the screen.

REFERENCES:
patent: 4404552 (1983-09-01), Hirahata et al.
patent: 4450442 (1984-05-01), Tanaka
patent: 4470042 (1984-09-01), Barnich et al.
patent: 4486746 (1984-12-01), Walker
patent: 4490797 (1984-12-01), Staggs et al.
patent: 4498081 (1985-02-01), Fukushima et al.
patent: 4504826 (1985-03-01), Leininger

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