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Advertisement search agent

  • US 20070206596A1
  • Filed: 02/12/2007
  • Published: 09/06/2007
  • Est. Priority Date: 03/03/2006
  • Status: Active Grant
First Claim
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1. An advertisement search agent module comprising:

  • a message acquisition unit for acquiring advertisement search messages including a search message, a service availability advertisement message, and a service unavailability advertisement message broadcast or multicast by a node connected to either one of a plurality of domains;

    a message database for storing the advertisement search messages acquired by said message acquisition unit;

    a node connection monitoring unit for detecting a connection of said node to either one of said domains;

    a delivery message extractor having at least one of a first extracting function to extract only said search message and said service availability advertisement message delivered from the connected node, of said advertisement search messages stored in said message database, and a second extracting function to recognize a node connected to the domain to which said node is connected, and extract only said search message and said service availability advertisement message delivered from the node connected to said domain, when the connection of said node is detected by said node connection monitoring unit; and

    a message delivery unit having at least one of a first delivery function to deliver said search message and said service availability advertisement message extracted by said first extracting function of said delivery message extractor to the domain to which said node is connected, and a second delivery function, to deliver said search message and said service availability advertisement message extracted by said second extracting function of said delivery message extractor to the node connected to said domain, when the connection of said node is detected by said node connection monitoring unit.

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