Method and apparatus for controlling a dynamic or static type di

Details Method and apparatus for controlling a dynamic or static type di Method and apparatus for controlling a dynamic or static type di

1980-12-15

1984-01-03

Curtis, Marshall M.

Communications: electrical

Continuously variable indicating

With meter reading

340717, 340802, 340798, G09G 304

Patent

active

044245130

ABSTRACT:
A control apparatus for driving a digital display device of either a dynamic or static type is responsive to data from a switch indicating whether a dynamic or static type display device is to be driven. When a dynamic display device is to be driven, corresponding instruction data are read out from a first memory included in the control apparatus whereas when a static display device is to be driven, corresponding instruction data are read out from a second memory. A processing circuit operates in accordance with selected instruction data, and thus (a) time shared output signals indicative of data to be displayed are generated through a plurality of output terminals for driving the dynamic display device, or (b) a single output indicative of data to be displayed is generated through one of the output terminals so as to drive the static display device. When driving the static display device, a clock pulse signal and load-command signal are also generated through some of the output terminals to periodically convert the output data fed through a single line into a plurality of driving signals for static display.

REFERENCES:
patent: 3539999 (1970-11-01), Houldin et al.
patent: 4257045 (1981-03-01), Miles
patent: 4286263 (1981-08-01), Lindberg
patent: 4325062 (1982-04-01), Devlin

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