Communication apparatus for communicating between a first and a

Details Communication apparatus for communicating between a first and a Communication apparatus for communicating between a first and a

1976-03-03

1978-05-02

Safourek, Benedict V.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325325, 340168R, 328 48, H04Q 132

Patent

active

040877531

ABSTRACT:
An improved communication method and apparatus for communicating between a first object and a second object wherein the first object includes apparatus for generating and transmitting a modulation signal having at least a predetermined number "L" pulses within a predetermined time interval and less than a predetermined number "M" pulses within the same predetermined time interval, and wherein the second object includes apparatus for receiving and detecting the modulation signal and providing an output signal in response to detecting at least the predetermined number "L" a pulses and less than the predetermined number "M" pulses. This

REFERENCES:
patent: 2992384 (1961-07-01), Malbrain
patent: 3312940 (1967-04-01), Ekbergh
patent: 3390334 (1968-06-01), Forward
patent: 3581116 (1971-05-01), Leostic
patent: 3594551 (1971-07-01), Shearer
patent: 3611298 (1971-10-01), Jacobson
patent: 3755744 (1973-08-01), Fukata

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