Communications: electrical – Selective – Having electron beam device
Patent
1977-09-19
1979-04-03
Moskowitz, Nelson
Communications: electrical
Selective
Having electron beam device
174 70R, G01V 116
Patent
active
041480066
ABSTRACT:
A simplified cable system for use in gathering S analog signals into each of T array terminals (AT), spaced apart a distance D, where the analog signals are amplified, digitized, stored and, on command, transmitted as trains of digital bits along a digital conductor pair in the cable system, to successive ATs downline, to a recording unit. In the optimum embodiment, the cables are all identical, are plugged into each of 2 ports, or receptacles, in each AT. The cables are D/2 long, have S/2 conductor pairs, and S/2 takeouts spaced D/S apart, each takeout connected to a different conductor pair. Each cable contains at least one digital conductor pair. Two cables in series connect between adjacent ATs. The plugs joining one cable to the next, connect only the digital conductor through from cable to cable, while the analog conductor pairs are dead ended at the joining plugs.
REFERENCES:
patent: 3938073 (1976-02-01), Fort et al.
patent: 3986162 (1976-10-01), Cholez et al.
patent: 4001769 (1977-01-01), Fort et al.
patent: 4041444 (1977-08-01), Carter
patent: 4041445 (1977-08-01), Carter
Geophysical Systems Corp.
Moskowitz Nelson
Silverman Daniel
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