Computer to recording medium interface
First Claim
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1. A method for performing a seismic geophysical survey wherein a central control means is utilized to control and acquire data from a plurality of remote geophone monitoring means, each of said plurality of remote geophone monitoring means being adapted to receive analog electrical signals from at least one geophone means, comprising the steps of:
- activating at least one of said plurality of remote geophone monitoring means;
providing analog electrical signals, representative of seismic waves, from at least one of a plurality of geophone means to a respective one of each activated remote geophone monitoring means, said remote geophone monitoring means performing preselected data processing operations on said analog electrical signals, said preselected data processing operations comprising the steps of;
sampling said analog electrical signals; and
converting the thus sampled analog electrical signals from analog form to digital form;
transmitting the sampled electrical signals, which have been converted to digital form, as seismic data to said central control means; and
storing said seismic data on a recording medium in said central control means, said step of storing said seismic data on a recording medium in said central control means comprising the steps of;
using a central computer to control said recording medium;
using a peripheral computer, under the control of said central computer, to supply said seismic data to said recording medium to be recorded;
detecting an error in the transfer of said data from said peripheral computer to said recording medium;
supplying an indication that an error has been detected, in the transfer of said data from said peripheral computer to said recording medium, to said central computer; and
using said central computer to command said peripheral computer to retransmit said data to said recording medium to thereby correct the error which occurred in the previous transfer of said data from said peripheral computer to said recording medium.
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Abstract
A central computer is utilized to control a recording medium while a peripheral computer is utilized to supply data to the recording medium for recording on magnetic tape. Method and apparatus is provided whereby an error indication is provided to the central computer if an error occurs in the transfer of data from the peripheral computer to the recording medium.
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Citations
16 Claims
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1. A method for performing a seismic geophysical survey wherein a central control means is utilized to control and acquire data from a plurality of remote geophone monitoring means, each of said plurality of remote geophone monitoring means being adapted to receive analog electrical signals from at least one geophone means, comprising the steps of:
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activating at least one of said plurality of remote geophone monitoring means; providing analog electrical signals, representative of seismic waves, from at least one of a plurality of geophone means to a respective one of each activated remote geophone monitoring means, said remote geophone monitoring means performing preselected data processing operations on said analog electrical signals, said preselected data processing operations comprising the steps of; sampling said analog electrical signals; and converting the thus sampled analog electrical signals from analog form to digital form; transmitting the sampled electrical signals, which have been converted to digital form, as seismic data to said central control means; and storing said seismic data on a recording medium in said central control means, said step of storing said seismic data on a recording medium in said central control means comprising the steps of; using a central computer to control said recording medium; using a peripheral computer, under the control of said central computer, to supply said seismic data to said recording medium to be recorded; detecting an error in the transfer of said data from said peripheral computer to said recording medium; supplying an indication that an error has been detected, in the transfer of said data from said peripheral computer to said recording medium, to said central computer; and using said central computer to command said peripheral computer to retransmit said data to said recording medium to thereby correct the error which occurred in the previous transfer of said data from said peripheral computer to said recording medium. - View Dependent Claims (2, 3, 4)
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5. A method for storing data on a recording medium comprising the steps of:
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using a central computer to control said recording medium; using a peripheral computer, under the control of said central computer, to supply said data to said recording medium to be recorded; detecting an error in the transfer of said data from said peripheral computer to said recording medium; supplying an indication that an error has been detected, in the transfer of said data from said peripheral computer to said recording medium, to said central computer; using said central computer to command said peripheral computer to retransmit said data to said recording medium to thereby correct the error which occurred in the previous transfer of said data from said peripheral computer to said recording medium. - View Dependent Claims (6, 7, 8)
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9. A seismic system for geophysical exploration comprising:
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a plurality of remote geophone monitoring means, each of said plurality of remote geophone monitoring means being adapted to receive electrical signals from at least one geophone means; and a central control means for generating electrical signals for initiating the operation of said plurality of remote geophone monitoring means; each of said plurality of remote geophone monitoring means comprising; means for sampling electrical signals, provided from at least one geophone means, and for converting the sampled electrical signals into digital seismic data; and means for transmitting said digital seismic data to said central control means; said central control means comprising; means for receiving data from said plurality of remote geophone monitoring means; a central computer means; a peripheral computer means; a recording means; means for interfacing said central computer means to said peripheral computer means to enable said central computer means to control said peripheral computer means; means for interfacing said central computer means to said recording means to enable said central computer means to control said recording means; means for interfacing said peripheral computer means to said recording means to enable data to be transferred from said peripheral computer means to said recording means; means for interfacing said peripheral computer means to said means for receiving data from said plurality of remote geophone monitoring means to thereby enable data to be transferred from said means for receiving data, from said plurality of remote geophone monitoring means, to said peripheral computer means; means for detecting an error in the transfer of the data from said peripheral computer means to said recording means and for generating a first signal representative of an error signal; and means for supplying said first signal to said central computer means, said central computer means commanding said peripheral computer means to retransmit the data to said recording means, in response to said first signal, to thereby correct the error which occurred in the previous transfer of data from said peripheral computer means to said recording means. - View Dependent Claims (10, 11, 12)
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13. Apparatus comprising:
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a central computer means; a peripheral computer means; a recording means; means for interfacing said central computer means to said peripheral computer means to enable said central computer means to control said peripheral computer means; means for interfacing said central computer means to said recording means to enable said central computer means to control said recording means; means for interfacing said peripheral computer means to said recording means to enable data to be transferred from said peripheral computer means to said recording means; means for detecting an error in the transfer of the data from said peripheral computer means to said recording means and for generating a first signal representative of an error signal; and means for supplying said first signal to said central computer means, said central computer means commanding said peripheral computer means to retransmit the data to said recording means, in response to said first signal, to thereby correct the error which occurred in the previous transfer of data from said peripheral computer means to said recording means. - View Dependent Claims (14, 15, 16)
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Specification