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Broadcast receiving method and apparatus and information distributing method and apparatus

  • US 20020001386A1
  • Filed: 06/29/2001
  • Published: 01/03/2002
  • Est. Priority Date: 06/30/2000
  • Status: Active Grant
First Claim
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1. A broadcast receiving method comprising:

  • storing first control information in a storage device, the first control information containing information unique to a receiver and required for the receiver to select broadcasted and encrypted contents information;

    receiving second control information with the receiver via a bi-directional communications channel, the second control information being for updating at least some contents of the first control information;

    updating the first control information in the storage device on the basis of the second control information;

    receiving broadcasted key information independent from the receiver and required to decrypt the contents information; and

    selecting and decrypting the contents information based on the key information and updated first control information.

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