G - Physics – 06 – F
Patent
G - Physics
06
F
354/137, 349/15,
G06F 15/02 (2006.01) G06F 15/20 (1980.01)
Patent
CA 1089995
MEANS AND METHOD FOR RECORDING SEISMIC SIGNALS (D#70,937-1) ABSTRACT OF THE DISCLOSURE An amplifying channel provides amplified signals corresponding to a received wide dynamic range analog input signal such as provided by a geophone group. A plurality of level comparators which number one less than the number of amplified signals compare the amplified signals with reference signals corresponding to a prede- termined range of a desired output signal. The comparators provide outputs corresponding to the comparison to logic circuitry which develop sampling signals. The amplified signals from the amplified channel are also provided to a plurality of switches which are controlled by sampling pulses provided by the logic circuit to sample an ampli- fied signal within the range defined by the reference sig- nals and provide it as the analog output signal. The analog output signal is converted to digital signals which are provided with other digital signals corresponding to the gain relationship between the analog output signal and the received analog input signal. I
291220
Smart & Biggar
Texaco Development Corporation
LandOfFree
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