Communications: electrical – Continuously variable indicating – With meter reading
Patent
1980-07-31
1983-06-28
Crosland, Donnie L.
Communications: electrical
Continuously variable indicating
With meter reading
340709, 340355, 34082576, 34082556, 46251, 46255, 200 6A, 74471XY, H04B 700, A63H 3004, G06F 302
Patent
active
043908772
ABSTRACT:
A remote control system in which control signals from a transmitter are sent to receivers mounted in a number of cars, or other vehicles. Manually operated controllers for the respective vehicles are connected to the transmitter. The transmitter is capacitively coupled to the receivers, and there is no conversion of the control signals into modulated radio frequency carriers in the embodiment to be described. The track on which the cars are propelled is coated with a conductive material which forms one plate of a capacitor, the other plate being formed by a second conductor which extends around the track and which is spaced and insulated from the conductive coating. Under some circumstances, the second conductor may be ground. Each car forms two additional capacitor plates within the first capacitor to provide capacitive coupling between the transmitter and the cars. The data transmission system at the transmitter uses a type of pulse code which permits the individual cars to be controlled by their individual controllers independently of one another, and which enables various commands to be transmitted to the individual cars so that each car may be steered, and so that the speed of each car may be controlled.
REFERENCES:
patent: 3400488 (1968-09-01), Phillpott et al.
patent: 3705387 (1972-12-01), Stern et al.
patent: 4156130 (1979-05-01), Ivashin et al.
patent: 4161726 (1979-07-01), Burson et al.
patent: 4200867 (1980-04-01), Hill
Beecher Keith D.
Crosland Donnie L.
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