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Data retrieval system using secondary information of primary data to be retrieved as retrieval key

  • US 5,787,414 A
  • Filed: 09/26/1996
  • Issued: 07/28/1998
  • Est. Priority Date: 06/03/1993
  • Status: Expired due to Term
First Claim
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1. A data retrieval system, comprising:

  • first memory means for storing primary data which are a filing target to be stored in the system and retrieved from the system;

    analysis means for automatically acquiring secondary information at a time of manipulation or input of the primary data, the secondary information being environmental information indicating an environmental condition of the primary data which is not directly indicative of the data content of the primary data;

    second memory means for storing the secondary information associated with the primary data, in correspondence to the primary data stored in the first memory means;

    input means for specifying a retrieval key to be used in selecting the secondary information associated with a desired primary data, said retrieval key not specifying any content of the desired primary data;

    retrieval means for selecting the secondary information from the second memory means in accordance with the retrieval key entered by the input means, and then identifying for retrieval, based on the secondary information, the primary data stored in correspondence to the secondary information selected in accordance with the retrieval key; and

    output means for outputting the primary data identified for retrieval by the retrieval means as a retrieval result for the desired primary data.

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