Display driver providing positive off-states

Details Display driver providing positive off-states Display driver providing positive off-states

1991-07-18

1993-09-28

Oberley, Alvin E.

Computer graphics processing and selective visual display system

Plural physical display element control system

Segmented display elements

345 46, G09G 320

Patent

active

052489620

ABSTRACT:
The invention is directed to a display driver for a bar graph display comprising a multi-segment bar graph array. The driver controls the bar graph display to have an OFF-state associated with each ON-state in order to prevent ghost or phantom bars. Additionally, the driver is implemented without a microprocessor to avoid the need for shielding against radial frequency interference.

REFERENCES:
patent: 4150365 (1979-04-01), Natori et al.
patent: 4183021 (1980-01-01), Gertner
patent: 4386347 (1981-05-01), Cutler et al.
patent: 4398265 (1983-08-01), Puhl et al.
patent: 4511894 (1985-04-01), Johnston
patent: 4743897 (1988-05-01), Perez
patent: 5055840 (1991-10-01), Bartlett
Hewlett-Packard Handbook, "101 Element Bar Graph Array", pp. 5-32 through 5-29, Jan. 1986.

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