Bar display with scale markers

Details Bar display with scale markers Bar display with scale markers

1975-11-24

1977-02-22

La Roche, Eugene

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

340324R, 340343, 340166EL, H05B 3700

Patent

active

040094146

ABSTRACT:
A bar graph device has a column of 200 cathodes connected in three sets which are energized in sequence to give a visible gas discharge which travels up the column from a reset cathode. The cathode drive is from a clock which also drives a sawtooth which is compared with the input signal. When equality occurs, the anode is de-energized to extinguish the discharge. Cathode drive continues until all cathodes in the column have been energized. Divide-by-200 circuitry ensures proper resetting. Scale markers are provided in the display itself by splitting the divide-by-200 circuit as shown, and using the pulses from the divide-by-5 section to fire a one-shot and a disable gate for, say, three clock pulses. This effectively freezes the system after every five pulses passing through the gate, resulting in the display in the device dwelling on every fifth cathode; these cathodes, therefore, appearing brighter than the rest.

REFERENCES:
patent: 3221170 (1965-10-01), Sylvander
patent: 3328790 (1967-06-01), Rhodes
patent: 3351928 (1967-10-01), Smola
patent: 3582944 (1971-06-01), Kashio
patent: 3944875 (1976-03-01), Owaki et al.

Affiliated with

Also associated with

Rating

Bar display with scale markers 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 display with scale markers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bar display with scale markers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-326066