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Copyright protection system, copyright protection device and video processing apparatus

  • US 20080002826A1
  • Filed: 06/20/2007
  • Published: 01/03/2008
  • Est. Priority Date: 06/23/2006
  • Status: Abandoned Application
First Claim
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1. A copyright protection system comprising:

  • a processor configured to execute a variety of programs;

    a bus which transfers a variety of items of data;

    a copyright protection device which encrypts the data for transferring the data in need of copyright protection to the processor via the bus;

    a copyright protection device nonvolatile memory which is provided in the copyright protection device to store, in non-volatile form, an encryption key parameter to be a source of an encryption key to be used for a encryption by the copyright protection device;

    a nonvolatile memory which is connected to the copyright protection device via the bus and stores, in non-volatile form, the encryption key parameter stored in the copyright protection device nonvolatile memory; and

    a decryption unit which is composed of software to be executed by the processor, wherein the decryption unit generates the encryption key on the basis of the encryption key parameter stored in the copyright protection device nonvolatile memory and makes the processor execute processing to decrypt the encrypted data, which is transferred from the copyright protection device via the bus, by using the generated encryption key.

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