Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1985-04-22
1987-07-07
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
34081511, 340753, 381 56, G01R 1904, G09G 314
Patent
active
046790420
ABSTRACT:
A device for providing a visual indication of the value of a variable of an electrical signal has a plurality, n, of driver circuits each having an input terminal for receiving the electrical signal and a plurality, m, of output terminals. Each driver circuit is operable in a mode in which it provides an output signal at its ith output terminal when the value of the variable lies in a range corresponding to the ith increment on a scale of m increments. The position of the scale of m increments associated with each circuit is adjustable so that the scale of m increment associated with the jth driver circuit overlaps by ((m-1)+(n-1)
) increments the scale of m increments associated with at least one of the (j-1)th circuit and the (j+1)th circuit. Light emitting elements, arranged in an interdigitated grand linear array, are coupled to respective output terminals of the driver circuits.
REFERENCES:
patent: 3701123 (1972-10-01), Barrett et al.
patent: 4322758 (1982-03-01), Ohya et al.
patent: 4528501 (1985-07-01), Dorrough et al.
"Driving Circuits for LED Displays," Elekronikschau (Germany), vol. 55, No. 3, (1979).
"LED Display Scales Having Increased Range;" Elektron, Entwickl. (Germany), vol. 15, No. 9, (Sep. 1980).
"Drive Circuits for LED-Scales with Linear and Logarithmic Response," Elektron, Int. (Austria), No. 11, (1980).
Clarke et al., "Build This LED Paragraph Display", Electronics, Austria, Dec. 1981, vol. 43, No. 12, pp. 56-68.
Maida, "Dot/Bar-Graph Display Drivers" Radio-Electronics, vol. 51, No. 10, pp. 96-99, 104, (Oct. 1980).
Brigance Gerald L.
Gray Francis I.
Smith-Hill John
The Grass Valley Group Inc.
LandOfFree
Bar/dot level meter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bar/dot level meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bar/dot level meter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1665262