Device for controlling a display with a plurality of strings of

Details Device for controlling a display with a plurality of strings of Device for controlling a display with a plurality of strings of

1989-08-24

1991-07-02

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340724, 34081502, 340792, G09G 332, G09G 326

Patent

active

050289152

ABSTRACT:
A device for controlling a display with a number of strings of light-emitting elements (particularly bulbs) connected in series to offer a aesthetically favorable jeu de lumiere, having, apart from a timing generator and a driving circuit for the display, a read only memory ROM, a programmable logic array PLA, two dividers and two address counters. With this device, all the aesthetically practical patterns can be repeated in desired times with varying speeds while requiring a very small storage capacity of the ROM, thus considerably saving the cost of production.

REFERENCES:
patent: 3651511 (1972-03-01), Andrews et al.
patent: 3909822 (1975-09-01), Lee et al.
patent: 4262292 (1981-04-01), Duley
patent: 4359730 (1982-11-01), Kunikane et al.
patent: 4647927 (1987-03-01), Ichikawa et al.
patent: 4771278 (1988-09-01), Pooley
patent: 4841200 (1989-06-01), Cleary, Jr. et al.

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