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Multitask subscription data retrieval system

  • US 4,815,030 A
  • Filed: 09/03/1986
  • Issued: 03/21/1989
  • Est. Priority Date: 09/03/1986
  • Status: Expired due to Term
First Claim
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1. In a multitask electronic data processing shstem having means for receiving from a remote data base of different types in response to nonmonitoring requests for data and specific monitoring requests for data, the specific monitoring requests requiring the remote data base to monitor data base sources with respect to specific identifiers, a method performed by the electronic data processing system for distributing the data to plural user tasks subscribing to the data comprising:

  • in a first provider task dividing a data stream of plural data types from the remote data base into plural data streams according to the data types;

    transferring from the first provider task at least one selected data stream in response to nonmonitoring requests directly to user tasks subscribing to the data streams and transferring at least one selected data stream in response to specific monitoring requests to at least a second provider task; and

    in a second provider task, dividing the data stream in response to specific monitoring requests into further data streams and transferring the further data streams to user tasks requesting the data streams.

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