Optical analog data link with simple self-test feature

Patent · Wed Jan 01 04:00:00 EST 1986

OSTI ID:866097

Witkover, Richard L ^[1]

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1. Commack, NY

A communications circuit for optically transmitting analog data signals free of excessive ripple, while having rapid response time. The invention is further characterized by being adapted to provide an immediate indication of the failure of the optical transmission link of the circuit. Commercially available voltage to frequency converter chips are used in conjunction with suitable wiring arrays and in combination with readily available indicator means for constructing the communication circuit of the invention. A V/F converter in the communications circuit is coupled to an offset adjustment means to cause the converter to continuously produce a string of output voltage pulses having a frequency of about 1 Khz responsive to the input analog signal to the converter being zero. The continuous presence of the 1 Khz frequency on the optical transmission link is monitored at the receiving end of the communication circuit and the indicator means is connected to immediately provide an easily detected indication of a failure of the optical transmission link to transmit the 1 Khz frequency pulses.

• Research Organization: ASSOC UNIVERSITIES INC
• DOE Contract Number: AC02-76CH00016
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4633523
• OSTI ID: 866097
• Country of Publication: United States
• Language: English

Related Subjects

/359/375/
adapted
adjustment
adjustment means
analog
analog data
analog signal
arrays
available
characterized
chips
circuit
combination
commercially
commercially available
communication
communications
conjunction
connected
constructing
continuous
continuously
continuously produce
converter
coupled
data
data signal
data signals
detected
easily
easily detected
excessive
failure
feature
free
frequency
frequency converter
frequency pulse
frequency pulses
immediate
immediately
indication
indicator
input
khz
link
means
monitored
offset
optical
optical analog
optical transmission
optically
optically transmitting
output
output voltage
presence
produce
provide
pulses
rapid
rapid response
readily
readily available
receiving
response
response time
responsive
ripple
self-test
signal
signals
simple
string
suitable
time
transmission
transmission link
transmit
transmitting
voltage
voltage pulse
voltage pulses
wiring
zero