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Digital signal processing apparatus, digital signal processing method, information center, and data delivery system

  • US 20070061473A1
  • Filed: 11/15/2006
  • Published: 03/15/2007
  • Est. Priority Date: 03/01/2001
  • Status: Active Grant
First Claim
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1. A digital signal processing method comprising the steps of:

  • receiving identification information and inquiry information from a terminal device over a communication line, said identification information identifying digital data that have undergone a predetermined low bit rate coding process and that are subject to an inquiry, said inquiry information being generated by said terminal device based on said digital data;

    retrieving said digital data subject to said inquiry from a digital data storage of said information center based on said identification information for identifying said digital data;

    generating reference inquiry information based on retrieved digital data;

    comparing generated reference inquiry information with received inquiry information;

    generating an inquiry result based on a result of the step of comparing; and

    transmitting the inquiry result.

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