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Electronic transmission device, and signal transmission method

  • US 20020095574A1
  • Filed: 01/11/2002
  • Published: 07/18/2002
  • Est. Priority Date: 01/16/2001
  • Status: Active Grant
First Claim
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1. An electronic transmission device comprising:

  • a first and a second communication means to be connected to a signal transmission line;

    an authentication process means for executing an authentication process with a first electronic device of a signal transmitting side through at least said first communication means;

    a decryption means for decrypting an encrypted signal; and

    a processing means for executing an operation process with a signal obtained by decrypting a signal at said decryption means wherein said authentication process means supplies key information for decrypting said encrypted signal supplied from said first electronic device based on a result of said authentication process;

    said first communication means supplies said encrypted signal supplied from said first electronic device connected through said signal transmission line to said decryption means and said second communication means, and said second communication means enables a connected second electronic device of a signal receiving side to transmit said encrypted signal and said key information and to execute an authentication process with said second electronic device.

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