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Data integrator for video display including windows

  • US 4,794,386 A
  • Filed: 04/11/1986
  • Issued: 12/27/1988
  • Est. Priority Date: 04/11/1986
  • Status: Expired due to Fees
First Claim
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1. A method of operating a computer-controlled video display terminal of the kind having a central processing unit, a memory, a video display screen and means for displaying selected data at selected coordinates on said screen, said central processing unit executing a control procedure stored in said memory for selecting said data and said coordinates;

  • said memory including a set of registers storing codes for said data, and memory locations storing a set of control parameters defining (a) respective window regions on said display screen (b) a subset of said registers for display in each of said windows and (c) timing information for controlling how long the same data are displayed in each window;

    said method comprising the steps of said central processing unit executing said control procedure to select said data and coordinates by the steps of;

    (1) readigg said control parameters defining said subset of said registers for display in each of said windows;

    (2) selecting a particular register in said subset of said registers for each of said windows;

    (3) reading said control parameters defining said respective window regions on said display screen for each of said windows;

    (4) in response to said control parameters defining said respective window regions read in step (3) above, transferring at least some of the codes for data stored in the particular register selected in step (2) for each window to said means for displaying so that characters are selectively displayed at each fo said window regions corresponding to said codes transferred from the respective selected registers;

    (5) reading said timing information; and

    (6) using said timing information in combination with said control parameters defining said particular register selected in step (2) and said control parameters defining said respective window regions read in step (3), to selectively terminate the display of said data selectively displayed at each of said window regions;

    wherein said steps are repetitively performed.

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