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Radio communication system and method and mobile communication terminal device

  • US 6,564,048 B1
  • Filed: 05/04/2000
  • Issued: 05/13/2003
  • Est. Priority Date: 12/18/1996
  • Status: Expired due to Term
First Claim
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1. A communication method for transmitting and receiving information between an information center and a communication terminal device via an intermediate station, comprising the steps of:

  • regularly transmitting over a first channel an information packet identifying a type of information to be provided and a version number from said information center to said communication terminal device via said intermediate station;

    determining at said communication terminal device whether said type of information corresponds to a user requested information and whether said version number indicates that said user requested information has been updated;

    communicating from said communication terminal device to said information center instructions concerning the type of information over a second channel outside of said first channel; and

    downloading said user requested information to said communication terminal device from said information center via said intermediate station over said second channel when a result of said step of determining is positive.

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