Acquisition method and device allowing to precisely digitize ana

Details Acquisition method and device allowing to precisely digitize ana Acquisition method and device allowing to precisely digitize ana

1990-06-28

1992-03-03

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341155, H03M 118

Patent

active

050936603

ABSTRACT:
A method and device for acquiring signals by amplifying, sampling and digitizing for permanently controlling the stability of the gain at each successive sampling cycle carried out on the signals as disclosed. A first digitizing of a non amplified signal sample and at least a second digitizing of an amplified signal sample is performed at each cycle. Each gain is measured by establishing a ratio between the values respectively obtained at the end of each second digitizing and of the first digitizing, and the amplifier gain is corrected if the gain of each gain actually applied to the acquired signal has deviated from a nominal value. The invention has an application to the digitizing of seismic signals.

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