Method and device for the high-rate transmission of data followi

Details Method and device for the high-rate transmission of data followi Method and device for the high-rate transmission of data followi

1990-10-30

1991-12-31

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

370 91, 34087013, 367 78, 455 53, G01V 122, H04J 300, H04J 1408

Patent

active

050776983

ABSTRACT:
Method and device for the high-rate transmission of data between a multiplicity of acquisition apparatuses (Ai) and a central station to which they are connected by a common transmission channel (V1) for commands and by a high-rate transmission channel (V2) for data.
A first clock signal (H1) serves for the transmission of the orders, the acquisition of the data and their storage in a memory (10). A second clock signal (H2) with a higher frequency non synchronous with the first one is used for reading the data stored by each acquisition apparatus. A determined time interval (or window) is assigned to each apparatus and the reading of each stored sample is activated by an order signal indicating the beginning of this window.
Application to a seismic transmission system for example.

REFERENCES:
patent: 3873961 (1975-03-01), Lee et al.
patent: 4112412 (1978-09-01), Howlett
patent: 4398271 (1983-08-01), Cretin et al.
patent: 4509170 (1985-04-01), Hollinger et al.
patent: 4628494 (1986-12-01), Rialan et al.
patent: 4787069 (1988-11-01), Beauducel et al.
patent: 4835744 (1989-05-01), Todd et al.
patent: 4905205 (1990-02-01), Rialan

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