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System for making data available to an outside software package by utilizing a data file which contains source and destination information

  • US 5,333,298 A
  • Filed: 08/08/1991
  • Issued: 07/26/1994
  • Est. Priority Date: 08/08/1991
  • Status: Expired due to Term
First Claim
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1. In a first computer system 130, having predefined peripherals (132, 133) operatively connected thereto, said first computer system including interface logic for communicating with said predefined peripherals, and further wherein said first computer system includes an operating system (135) and application software packages (140) residing therein which execute under control of said operating system, and further wherein said first computer system includes a data exchange logic (150) for permitting an outside application software package (141) to be integrated into the first computer system, the outside application software package being created to perform a predefined application function in a second computer system, said outside application software package having identified application variables, the environment of the second computer system including a computer and an operating system of the same type as that of the first computer system, the source of the identified application variables of the outside application software package defied for the second computer system being different than the source of the identified application variables in the first computer system, the data exchange logic providing a method of making the identified application variables available from the predefined peripherals of the first computer system to the outside application software package integrated into the first computer system, said method comprising the steps of:

  • a) generating a data file containing a point list definition file for identifying source and destination information of the identified application variables and a control file for specifying what to do with data input to or output form the outside application software package, when said outside application software package is executing in said first computer system; and

    b) i) accessing a first package (152), said first package including first program logic and first preselected information of said data file, when it is desired to obtain the identified application variables, said first package utilizing information contained in said data file to generate commands to obtain the identified application variables, the information of said data file including the source of the identified application variables internal to or external to said first computer system; and

    ii) accessing a second package (153), said second package including second program logic and second preselected information of said data file, when it is desired to output results of performing the predefined application function, said second package utilizing information contained in said data file to generate commands to cause the results to be outputted, the information of said data file including a destination of the results to be outputted external to or internal to said first computer system, thereby permitting an outside application software program to be integrated into said first computer system.

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