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Method and portable apparatus for comparison of stored sets of data

  • US 4,348,744 A
  • Filed: 04/29/1981
  • Issued: 09/07/1982
  • Est. Priority Date: 04/04/1978
  • Status: Expired due to Term
First Claim
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1. A system for comparing first and second sets of data, said system comprising:

  • (a) first and second portable computing devices;

    (b) first storage means in said first computing device for storing said first set of data, said first set of data including a plurality of items of information, said second set of data including items of information with which corresponding items of information of said first set of data are to be respectively compared, and second storage means in said second computing device for storing said second set of data, said plurality of items of said first set corresponding respectively on an item-by-item basis to said plurality of items of said second set;

    (c) switch means in one of said first and second portable computing devices for producing a first signal to initiate data transmission;

    (d) first transmitting means in said first computing device for transmitting data of said first set from said first computing device to said second computing device in response to said first signal;

    (e) data entry means for entering said first set of data into said first storage means while said first computing device is not coupled to said second computing device and before said producing of said first signal to initiate said transmitting data of said first set;

    (f) first receiving means in said second computing device for receiving said data of said first set transmitted from said first computing device;

    (g) first comparing means in said second computing device responsive to said second storage means and said first receiving means for comparing said items of said data of said second set stored in said second storage means with said corresponding items of said received data of said first set to produce a plurality of comparison data items corresponding to respective ones of said items of said first set;

    (h) computing means in said second computing device responsive to said first comparing means for operating on said plurality of comparison data items to effect computing of a first number, said first number being indicative of the degree of similarity between all of said data of said first and second sets; and

    (i) first display means in said second computing device responsive to said first comparing means for displaying information representative of said first number to provide an indication of the compatability of things or persons represented by said first and second sets of data, respectively.

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