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Variable size and position dialog area display system

  • US 4,660,154 A
  • Filed: 04/06/1984
  • Issued: 04/21/1987
  • Est. Priority Date: 04/06/1984
  • Status: Expired due to Term
First Claim
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1. Apparatus for providing a variable size and position alphanumeric area for a display screen normally supplied with alphanumeric information in the form of a plurality of consecutive lines positioned at consecutive locations, wherein said alphanumeric area normally consists of a lesser number of lines than said plurality of consecutive lines and constituting a subset of said plurality of consecutive lines, said apparatus comprising:

  • first means for selectively providing numerical identification of the starting line and the stopping line of a group of lines comprising said subset to be displayed, said numerical indication being in the form of a line of data from an input data bus,and a counter adapted to receive the numerical identification of the starting line for counting during the normal occurrence of said plurality of lines as said alphanumeric information is received until said starting line is reached to produce a display enabling signal to enable display of said alphanumeric information and adapted for counting until the stopping line is reached for discontinuing said enabling signal for disabling display of said alphanumeric information.

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