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System for entering information into and taking it from a computer from a remote location

  • US 4,225,918 A
  • Filed: 03/09/1977
  • Issued: 09/30/1980
  • Est. Priority Date: 03/09/1977
  • Status: Expired due to Term
First Claim
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1. In a system for entering information into and taking information from a digital computer by intelligence transmission over two channels, the combination comprising(A) a digital computer including a clock, control unit, arithmetic unit, system bus, memory and address trunk,(B) said computer further including and being characterized by(1) a console and console interface for entering information in machine language and displaying information from various computer locations in machine language, said console and interface comprising(a) a plurality of switches for entry of word and function signals sequentially one bit at a time,(b) a plurality of bit indicators associated with respective ones of said switches,(C) said computer and interface together constituting(1) means responsive to signals from said switches for setting up any desired binary word and thereafter transferring said word to different memory locations or registers within the computer,(2) means for supplying to said indicators binary bit voltages to turn the indicators on or off according to the respective bit values of a selected word within the computer,(D) means coupled to said indicators and responsive to the bit voltages applied thereto for periodically creating in sequence time serialized message pulse trains with respective time locations having a binary value of a corresponding one of said indicators,(E) means responsive to a received time serialized pulse train, formed according to a predetermined code so that any train may correspond to one of said switches, for creating in said console the same signals as if the switch represented by the code of the train had been closed,(F) means for transmitting to a base remote from said computer, via a communications link, the pulse trains created by said means (D),(G) means for transmitting from said base to same means (E), via a communications link, successive pulse trains which are respectively coded to correspond to successive ones of said switches whose effective actuation is desired, and(H) means at said base responsive to pulse trains received from said means (F) for converting the serial pulses of each train into a signaled binary word which is indicative of the states of said indicators at that time.whereby binary words displayed by the indicators at said computer are dynamically signaled at said base and changes in said computer, including its console indicators, may be effected from the base as if the computer'"'"'s console switches were physically manipulated.

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