Method and circuit for controlling a band display of a plurality

Details Method and circuit for controlling a band display of a plurality Method and circuit for controlling a band display of a plurality

1979-12-26

1982-06-29

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340793, 340771, G09G 300

Patent

active

043374646

ABSTRACT:
A method for a band display of at least two analog signals in a display device having a display scale with a plurality of successive display elements of which a part defined by an analog signal in each scanning cycle is made luminous by a specified scanning frequency to produce an analog display, comprises changing the current supply to the display elements and changing the scanning speed of the display elements to produce a three level variation of light intensity on the same display scale. A light spot of a specified length displaying the value of a first analog signal is provided on the display scale by a first level of light intensity. A uniform light column displaying the value of a second analog signal is provided on the display scale by a second, middle, level of light intensity. A separation is provided on the display scale between the first analog signal display and the second analog signal display by a third level of light intensity.

REFERENCES:
patent: 3922666 (1975-11-01), Inami et al.
patent: 4009414 (1977-02-01), Bockett-Pugh
patent: 4127794 (1978-11-01), Frankland
patent: 4163971 (1979-08-01), Morin et al.
patent: 4183025 (1980-01-01), Kutaragi et al.
patent: 4224616 (1980-09-01), Kamagata et al.

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