Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-05-04
1980-10-28
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307232, 307233R, 307269, 328 72, 328109, H03K 5153
Patent
active
042309921
ABSTRACT:
A multiple priority remote control system for the remote control of a traffic signal control system for a traffic intersection responsive to optical signals transmitted by optical energy transmitters carried on designated vehicles operating along the roadways of the intersection. The remote control system includes signal discriminator circuitry for producing high or low control signals dependent upon the particular optical signal that is detected and in accordance with the roadway of the intersection from which the detected optical signal is received. A control circuit connected to the controller for the traffic signal control system and to the discriminator circuitry responds to the control signals to provide a green light to the vehicle transmitting the first of two detected low priority signals or the first of two detected high priority signals or the high priority signal of detected high and low priority signals. The signal discriminator means includes a signal discriminator circuit which provides a delay and a coincidence circuit for a received signal to detect the high priority signals. A signal cancel counter and reset signal circuit is included in the signal discriminator circuit for enhancing the degree of signal discrimination.
REFERENCES:
patent: 3634869 (1972-01-01), Hsueh
patent: 3705358 (1972-12-01), Bauman et al.
patent: 3995223 (1976-11-01), Gimber et al.
patent: 4068180 (1978-01-01), Nelligan
Alexander Cruzan
Marben Robert L.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Zazworsky John
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