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Visual message intercommunication unit and system

  • US 4,430,639 A
  • Filed: 05/21/1981
  • Issued: 02/07/1984
  • Est. Priority Date: 05/21/1981
  • Status: Expired due to Term
First Claim
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1. For use in a visual message intercommunication system, a message terminal unit, said unit comprising:

  • (a) a keyboard comprising a plurality of data entry keys and visible message display means,(b) display control means for causing data entered on said keyboard to be displayed on said display means,(c) transmitting means for causing data entered on said keyboard and displayed on said display means to be transmitted upon user command to an output of said unit,(d) receiving means for automatically storing and displaying a message received from another unit and for transmitting an automatic response messsage to an output of said unit upon receipt of such message, and(e) means for alerting a user in response to any reception of an incoming automatic response message from another unit.

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