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Terminal control system

  • US 4,734,853 A
  • Filed: 12/02/1985
  • Issued: 03/29/1988
  • Est. Priority Date: 12/03/1984
  • Status: Expired due to Term
First Claim
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1. A terminal control system in an online system having a central processing system for executing different application programs, a terminal controller connected to said central processing system and a plurality of terminals connected to said terminal controller, each of said plurality of terminals including at least one logical terminal for executing a different application program, said terminal controller comprising:

  • protocol execution means for controlling communication between said terminals and said central processing system;

    control tables associated with respective logical terminals for storing application identification information; and

    means responsive to a macroinstruction containing application identification information received from a particular logical terminal when an application program is initiated or switched by said particular logical terminal one of said control tables associated with said particular logical terminal;

    whereinsaid protocol execution means includes means responsive to application identification information stored in said control tables for extracting a protocol most suitable for an application program being executed so that a terminal having said particular logical terminal communicates with said central processing system in accordance with said extracted protocol.

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