Device for the sequential transmission of signals by radio or by

Details Device for the sequential transmission of signals by radio or by Device for the sequential transmission of signals by radio or by

1982-08-24

1986-04-15

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 77, 455 53, 340539, G01V 116, H04B 346

Patent

active

045832064

ABSTRACT:
Device for the sequential transmission of signals by radio or by cable between a central control and recording station and local data acquisition apparatuses, comprising cables connecting said data acquisition apparatuses to the central station and radio transmission and reception means associated with each acquisition apparatus and with the central station, and switching means for establishing the cable connection and interrupting the radio connection between the central station and any particular apparatus for which said radio connection becomes defective as a result of obstacles on the path between the location of said apparatus and that of the central station.

REFERENCES:
patent: 3496530 (1970-02-01), Brown et al.
patent: 3916371 (1975-10-01), Broding
patent: 4152691 (1979-05-01), Ward
patent: 4398271 (1983-08-01), Cretin et al.
GUS-BUS, 9/77, 19 pages, GUS Manufacturing, Inc.
Shave, "A Distributed Seismic Data Acquisition System . . . Link", 11/18/80, SRG Mtg.

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