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Method and apparatus for information storage and retrieval

  • US 4,276,597 A
  • Filed: 01/17/1974
  • Issued: 06/30/1981
  • Est. Priority Date: 01/17/1974
  • Status: Expired due to Term
First Claim
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1. An information storage and retrieval system comprising:

  • a set of stored information bearing records having information stored in a language format which, at least in part, has intelligent meaning because of particular groupings of characters or symbols therein,each of said records being disposed at a predetermined address or location,a stored retrieval file for facilitating the retrieval of particular desired records from said set of information bearing records, said retrieval file comprising a plurality of arrays of binary coded elements,each of said arrays including predetermined elements individually and respectively corresponding to the addresses of each of said information bearing records,each of said arrays being formed to indicate the presence or absence of a predetermined identifiable characteristic of the language structure associated with the information content of each of said information bearing records, wherein said plurality of arrays constituting a comprehensive set of arrays correspond to a comprehensive set of said predetermined identifiable characteristics of language structure comprising substantially all such predetermined identifiable characteristics which are to be later utilized in searching for desired information bearing records, andeach element in a given array being binary coded in a first manner to represent the presence in the respectively corresponding record of the predetermined identifiable characteristic of language structure corresponding to the given array and being binary coded in a second distinguishable manner to represent the absence in the respectively corresponding record of the predetermined identifiable characteristic of language structure corresponding to the given arraywhereby particular desired records bearing certain desired information may be located and thus retrieved by first determining the subset of said predetermined identifiable characteristics present in said desired information and then examining the respectively corresponding subset of said arrays to determine the storage address or location of each stored record containing all of said subset of predetermined identifiable characteristics.

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