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GROUP REGISTRATION DEVICE, GROUP REGISTRATION RELEASE DEVICE, GROUP REGISTRATION METHOD, LICENSE ACQUISITION DEVICE, LICENSE ACQUISITION METHOD, TIME SETTING DEVICE, AND TIME SETTING METHOD

  • US 20090151006A1
  • Filed: 08/08/2006
  • Published: 06/11/2009
  • Est. Priority Date: 08/31/2005
  • Status: Abandoned Application
First Claim
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1. A group registration device configured to register at least one information recording medium and/or information processing device into a group, comprising:

  • a registration request detecting unit configured to detect a request for registering said information recording medium and/or information processing device into said group;

    a session ID generating unit configured to take a series of exchanges as a registration session, which sends a message requesting said group registration, and as to the message thereof receives a reply message, and to generate a session ID for identifying the registration session thereof;

    a registration request message sending unit configured to send a registration request message including the information recording medium ID of said information recording medium and/or the information processing device ID of said information processing device to be registered into said group, and said session ID, to a registration server;

    a registration reply message receiving unit configured to receive a registration reply message including the ID list of said information recording medium ID and/or information processing device ID registered into the group by said registration server, said session ID, from the registration server;

    a verification unit configured to verify that the session ID included in said registration reply message is identical to the session ID generated at said session ID generating unit, and to delete said session ID; and

    a storage unit configured to store the ID list included in said registration reply message in a storage region so as to be associated with a group ID specifying said group;

    wherein with said registration request message sending unit and said registration reply message receiving unit, within the same said registration session, said registration request message is sent once, and said registration reply message is received once;

    and wherein processing to be executed within said registration session is restricted to sending of said registration request message by said registration request message sending unit, and receiving of said registration reply message by said registration reply message receiving unit.

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