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Information providing system using code information

  • US 7,490,134 B2
  • Filed: 02/06/2003
  • Issued: 02/10/2009
  • Est. Priority Date: 02/08/2002
  • Status: Expired due to Fees
First Claim
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1. An information-supply system that uses code information comprising:

  • a code-issuing server system that encodes part of a character string to generate an encoded portion by a secret key and issues code information that is a combination of the encoded portion and an open portion including a Web address;

    an information-supply server system that includes an open-key management server that manages an open key for decoding the encoded portion of said code information and an advertiser server that manages information supplied via a network; and

    a portable terminal having an imaging function that uses an imaging element, and that photographs said code information, obtains a Web address that is contained in the open portion by decoding said open portion of said photographed code information, and accesses a Web page via said network using said obtained Web address and sends an encoded portion that is contained in said code information;

    wherein said information-supply server system decodes, using said open key, said encoded portion that is sent in response to access from said portable terminal based on a Web address obtained by decoding from said portable terminal and supplies information corresponding to the decoded encoded portion from said advertiser server to said portable terminal via said network.

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