Device for the electromagnetic transmission of an event taking p

Details Device for the electromagnetic transmission of an event taking p Device for the electromagnetic transmission of an event taking p

1984-05-09

1986-08-05

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

340323R, 368 1, 368 2, 368 6, G08C 1900, G08B 2300, G04F 800

Patent

active

046046216

ABSTRACT:
The electromagnetic transmission in an interference-laden environment of events defined by the time of their occurrence is accomplished by repeatedly generating, at equal intervals after occurrence of the event, signals representing the occurrence of the event. An event which must be defined by the time t.sub.e at which it occurs triggers a switch which in turn triggers a time base whose signal is sent to a counter. The counter produces at its output a sequence of pulses which are coded in a coder. The code indicates for each pulse the deviation in time .DELTA.T.sub.i which separates it from the time at which the event occurred. The sequence of pulses is sent electromagnetically to a receiver via a transmitter. The first interference-free pulse received is processed by a decoder which provides the value .DELTA.T.sub.i to an arithmetic unit. The arithmetic unit subtracts the value .DELTA.T.sub.i from the time of day t.sub.h to obtain the time of day t.sub.e of the event. The device is applicable in particular to the timing of sporting events.

REFERENCES:
patent: 3789653 (1974-02-01), Brejaud
patent: 4303983 (1981-12-01), Chaborski
patent: 4368987 (1983-01-01), Waters

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