Digital display system

Details Digital display system Digital display system

1978-06-02

1979-12-04

Pitts, Harold I.

Communications: electrical

Systems

Timer control

58 24R, 58 50R, G04C 1302, G08B 500

Patent

active

041774540

ABSTRACT:
A digital display system with a control unit and a plurality of display units each adapted to be driven by a signal from the control unit. The control unit includes an A.C. power supply for generating a fixed A.C. voltage, and the control unit produces a multi-parallel-bit digital signal indicative of time or the like, extracts a pulse signal at the fixed frequency from the A.C. voltage, modulates the pulse signal with respective bits of the digital signal to produce a time-division multiplex signal, supplies the A.C. voltage to the respective display units and feed the time-division multiplex signal. Each of the display units rectifies the supplied A.C. voltage to produce a power supply voltage for the display unit, produces from the supplied A.C. voltage to be used for display, further produces a display signal from the produced A.C. voltage and the time-division multiplex signal and feed the display signal to a display device to display time or the like. The time-division multiplex signal sent from the control unit includes a reference time signal of a fixed frequency necessary for the display units so that the display units do not need to include oscillators to produce the reference time signal.

REFERENCES:
patent: 3861134 (1975-01-01), Chacon

Affiliated with

Also associated with

Rating

Digital display system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital display system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital display system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-93162