Method of and a system for remote control of electronic equipmen

Details Method of and a system for remote control of electronic equipmen Method of and a system for remote control of electronic equipmen

1984-02-22

1986-11-04

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

34082572, 340850, 367197, 367 6, 367133, G08C 1900, G10K 1100, H04B 159, H04B 1100

Patent

active

046212620

ABSTRACT:
A method of and a system for remote control of individual electronic equipments which are spread out across a large geographical area. Particularly activation of radio transmitters spread over the water surface and cooperating with hydrophones for picking up sound waves from submarines in order to locate submarines. To selectively activate the electronic equipments electromagnetic waves or sound waves are transmitted with given relative time positions from at least three fixed stations having known geographical positions. In each electronic equipment the waves are received and compared as regards their relative time positions at reception, activation of an equipment taking place only if a given criterion as regards said mutual time positions is fulfilled. Activation of equipments will take place only within a given small zone of said large area. The location of said small zone is determined by the relative time positions of the transmitted waves, which can be varied in order to select different zones.

REFERENCES:
patent: 3641575 (1972-02-01), Auer, Jr. et al.
patent: 4396918 (1983-08-01), Wallis

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