发明名称 |
Seismic amplifier means and method |
摘要 |
The seismic amplifier includes an amplifying circuit which amplifies an analog signal to provide an amplified analog signal. The amplified analog signal is converted to digital signals. A controlled network connected to the amplifier circuit controls the gain of the amplifier circuit in a manner so that the gain for a current seismic operation, except for an initial seismic operation, is determined during the next previous vibration seismic operation.
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申请公布号 |
US4727521(A) |
申请公布日期 |
1988.02.23 |
申请号 |
US19860821712 |
申请日期 |
1986.01.23 |
申请人 |
TEXACO INC. |
发明人 |
MEYER, HERBERT J.;HOWLETT, DONALD L. |
分类号 |
G01V1/24;(IPC1-7):G01V1/16 |
主分类号 |
G01V1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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