Communications: electrical – Continuously variable indicating – Plural transmitters
Patent
1985-09-23
1987-01-27
Myracle, Jerry W.
Communications: electrical
Continuously variable indicating
Plural transmitters
367 79, G08C 1916
Patent
active
046397299
ABSTRACT:
In a two-stage, time-division multiplexing method and apparatus, a plurality of sensors are disposed at equal intervals along a plurality of transmission channels. An interrogation signal is transmitted from a recording station to all of the sensors along each channel. Because of the spatial arrangement of each sensor along the telemetric system and different propagation path lengths along each channel, the output signals from the sensors are time-division multiplexed along each channel. The multiplexed signals along each channel are time-division multiplexed a second time upon arrival at the recording station where the signals from each channel are interleaved with each other.
REFERENCES:
patent: 4313192 (1982-01-01), Nelson et al.
Kane Barry C.
Knox William A.
Lowe Robert E.
Myracle Jerry W.
Western Geophysical Company of America
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