Method and apparatus for remotely controlling a seismic vibrator and recording system

Claim 2

In a seismic system having at a first location at least one vibrator capable of imparting a unique signal into the earth, having at a second location a recording means and a detector array electrically coupled to said recording means, said detector array adapted to receive said unique signal after transmission through the earth from said first location, a method of providing a selected unique signal to each of said first and second locations, comprising the steps of: a. generating a selected short-duration coded signal, b. simultaneously transmitting said coded signal to said first and second locations, c. generating a selected unique signal responsive to the arrival at said first location of said coded signal, and d. generating an identical selected unique signal responsive to the arrival at said second location of said coded signal.

Claim 3

A method as in claim 1 in which saiD step of generating said selected unique signal includes the step of decoding said coded signal.

Claim 4

A method as in claim 1 in which said coded signal transmitted to said second location comprises a facsimile of the decoded, coded signal.

Claim 5

A method as in claim 1 in which the step of generating a selected short-duration coded signal is responsive to the step of transmitting a commence pulse from said recording means.

Claim 6

A method as in claim 1 including the additional steps at said first location of transmitting said unique signal to said vibrator and imparting said unique signal into the earth.

Claim 7

A method as in claim 1 including the additional step at said second location of phonographically recording said unique signal.

Claim 8

A method as in claim 6 in which said step of phonographically recording said unique signal comprises magnetically recording said signal.

Claim 9

In a seismic system having at a first location at least one vibrator capable of imparting a unique signal into the earth, having at a second location a recording means, and a detector array electrically coupled to said recording means, said detector array adapted to receive said unique signal after transmission through the earth from said first location, the improvement comprising: a. means for generating a selected short-duration coded signal, and a facsimile signal, b. means for simultaneously transmitting said coded signal to said first location, and said facsimile signal to said second location, c. means at said first location for receiving and decoding said selected coded signal, d. means at said first location responsive to said decoded, selected coded signal for generating a selected unique signal, and e. means at said second location responsive to said facsimile signal for generating an identical unique signal, said facsimile signal occurring simultaneously in time with said decoded, selected coded signal.

Claim 10

In a seismic system having at a first location at least one vibrator capable of imparting a unique signal into the earth, having at a second location a recording means, and a detector array electrically coupled to said recording means, said detector array adapted to receive said unique signal after transmission through the earth from said first location, the improvement comprising: a. means for generating a selected short-duration coded signal, and a facsimile signal, b. means for simultaneously transmitting said coded signal to said first location, and said facsimile signal to said second location, c. means at said first location for receiving and decoding said selected coded signal, d. means at said first location responsive to said decoded, selected coded signal for generating a selected unique signal, and e. means at said second location responsive to said facsimile signal for generating an identical unique signal, said facsimile signal occurring simultaneously in time with said decoded, selected coded signal.

Claim 11

A seismic system as in claim 8 including means at said first location for transmitting said selected unique signal to said at least one vibrator, whereby said unique signal is imparted into the earth.

Claim 12

A seismic system as in claim 8 including means at said second location to phonographically record said unique signal.

Claim 13

A seismic system as in claim 8 including means at said second location for generating a commence pulse and means for transmitting said commence pulse to said coded signal generating means.

Claim 14

A seismic system as in claim 8 in which said means for generating said unique signal comprises: a start flip-flop having a set input, a reset input and an output; said set input receiving said signal from an encoder; a two-input ''''AND'''' gate, one of said inputs being electrically coupled to said output of said start flip-flop; a precision clock electrically coupled to the second input of said ''''AND'''' gate; a two-stage counter having an enable input; reset input; and output; said set input being electrically coupled to said output of said ''''AND'''' gate; an eight-stage counter having an enable input, reset input and output, said enable input being electrically coupled to the output of said second stage counter; a 14-stage counter having an enable input, reset input and output; said enable input being electrically coupled to the output of said eight-stage counter; a sweep length switch register having an output; a manual switch having an output; a second two-input ''''AND'''' gate; one of said inputs being electrically coupled to said sweep length switch register and the other of said input signals being connected to said manual switch; a first relay having an input connected to the output of said second ''''AND'''' gate, said relay having an output; a third two-input ''''AND'''' gate having one input thereof electrically coupled to the output of said relay and a second input being electrically coupled to the output signal of said 14-sTage counter, the output of said third ''''AND'''' gate being electrically coupled to the reset input of said start flip-flop; a taper flip-flop having an input electrically coupled to said second two-input ''''AND'''' gate and further having dual outputs; an integrator having an input and output, said input being electrically coupled to the output of said taper flip-flop; a cosine shaper having an input electrically coupled to the output of said integrator and further having an output; a digital-to-analog converter having an input electrically coupled to the output of said cosine shaper; a manual switch; a fourth two-input ''''AND'''' gate, one of the inputs being electrically coupled to said manual switch, and the other being electrically coupled to the output of said start flip-flop, the output of said fourth ''''AND'''' gate being connected to said taper flip-flop; a fifth dual input ''''AND'''' gate, one input being electrically coupled to the output of said second ''''AND'''' gate and the other being electrically coupled to the output of said fourth ''''AND'''' gate; the output of said ''''AND'''' gate being connected in parallel to said second-stage, eight-stage, and 14-stage counters; an instruction sequence decoder having a plurality of inputs electrically coupled to the outputs of said eight-stage counter and having a plurality of outputs; an instruction-in generator having a plurality of inputs electrically coupled to said plurality outputs of said instruction sequence decoder.