Data acquisition, transport and storage system

Details Data acquisition, transport and storage system Data acquisition, transport and storage system

1973-05-07

1977-01-04

Moskowitz, Nelson

Communications: electrical

Selective

Having electron beam device

340 155DP, 340 155GC, 346 33C, 360 18, G01V 124, G01V 122

Patent

active

040017680

ABSTRACT:
This abstract describes a system for the field recording of seismic data in which a plurality of geophone outputs are connected to an array terminal. Each geophone is connected to a fixed gain differential amplifier. A shifting function is produced which is added to the amplified geophone signal to form a sum signal which goes to an axis crossing coder, (AXC). On a first command from an array controller in a distant recording unit, the AXC is commanded to produce axis-crossing-coded pulses of the instantaneous sum signals. These pulses are stored in a parallel-to-serial converter inside the array terminal. On a second command from the array controller the converter reads out as a train of serial bits, the pulses stored in the converter. This train of single bit signals is transmitted to the array controller by a single pair of conductors, and stored on a magnetic recording means.

REFERENCES:
patent: 3652979 (1972-03-01), Angelle
patent: 3657694 (1972-04-01), Lindsey
patent: 3795008 (1974-02-01), Kolsrud et al.
patent: 3838445 (1974-09-01), Cupp et al.

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