Digital output telemetering system for recording seismic signals

Details Digital output telemetering system for recording seismic signals Digital output telemetering system for recording seismic signals

1981-08-31

1984-04-10

Buczinski, S. C.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

340853, G01V 122

Patent

active

044425112

ABSTRACT:
The digital output telemetering system for recording seismic signals comprises, according to the invention, a seismic channels commutator connected to an instantaneous automatic gain controller whose outputs are connected to an input of an analog memory and to inputs of a decoder. The latter has its two other inputs connected to a trigger output and a calibration output, respectively, of a unit for controlling a digital-analog converter. Outputs of the decoder are respectively connected to an input of an AND gate, a reset input of a counter and a second, control, input of the analog memory whose output is connected to an analog-digital converter. The latter has its output connected to an input of a receiving register whose other inputs are respectively connected to an output of a single-digit counter and an input of the decoder. The instantaneous automatic gain controller comprises two single-digit memories connected to a second input of the analog memory and to a second input of the decoder, respectively. The analog-digital converter comprises an OR gate whose output is connected to a digital input of the digital-analog converter, which serves as the calibration input. The input of the OR gate is connected to a respective output of the register.

REFERENCES:
patent: 4086504 (1978-04-01), Ezell et al.
patent: 4112412 (1978-09-01), Howlett
patent: 4137562 (1979-01-01), Boeck et al.
patent: 4219810 (1980-08-01), Joosten
patent: 4281403 (1981-07-01), Siems et al.
patent: 4296484 (1981-10-01), Miller
patent: 4301521 (1981-12-01), Kelm
of V. B. Tsukernik, "Systemy Tsifrovoy Registraysii i obrabotki dannykh seismorazvedki", (Digital Systems for Recording and Processing Seismic Prospecting Data), Moscow, Viems, 1977, p. 5).
USSR Inventor's Certificate No. 482,748 Cl. Golv 1/28, published in the Bulletin of Discoveries, Inventions, Industrial Designs and Trademarks, No. 32 (1975).

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