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Apparatus for monitoring and/or controlling the operations of a computer from a remote location

  • US 4,356,545 A
  • Filed: 08/02/1979
  • Issued: 10/26/1982
  • Est. Priority Date: 08/02/1979
  • Status: Expired due to Term
First Claim
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1. Apparatus for use in monitoring and controlling the operations of a computer at user site from a support center remote from said user site over a telephone line, said computer including a CPU and a display terminal, said apparatus comprising:

  • a. a display terminal at said support center,b. means for coupling said display terminal at said support center to said telephone line, said coupling means including an acoustic coupler,c. a control and switching device at said user site connecting said CPU to said display terminal at said user site, andd. means connecting said control and switching device to said telephone line, said connecting means including an acoustic coupler,e. said control and switching device including circuitry for enabling said display terminal at said user site to communicate directly with said CPU in the absence of a link with said display terminal at said support center over said telephone line at a BAUD rate set by said display terminal at said user site and said CPU and circuitry for enabling said display terminal at said support center to operate along with said display terminal at said user site at BAUD rates set by said control and switching device and limited by said acoustic couplers in an on-line mode wherein each display terminal can input to said CPU and the output from said CPU is displayed simultaneously at both of said display terminals and a conversational mode wherein said CPU is disengaged from said display terminal at said user site and inputs from either display terminal are displayed at both display terminals when said link is established, said modes of operation being controllable by circuitry located in said display terminal at said user site.

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