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Apparatus and method for data security in an optical disk storage system

  • US 5,706,266 A
  • Filed: 05/01/1995
  • Issued: 01/06/1998
  • Est. Priority Date: 12/20/1991
  • Status: Expired due to Fees
First Claim
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1. A method of protecting files stored on an optical writable disk, said method comprising the steps of:

  • physically embedding a first identification signal group in a writable optical disk;

    storing a second identification signal group in a file written on said writable optical disk;

    on initiation of interaction between an interaction system and said writable optical disk, transferring a representation of said first and said second identification signal group to a signal processing unit of said interaction system;

    comparing said first and said second identification signal group representation in said signal processing unit and continuing interaction between said interaction system and said writable optical disk only when said comparison between said first and said second identification signal group representations is positive; and

    decoding a transferred file prior to processing by said processing unit;

    wherein said interaction system has a third identification signal group associated therewith, said method further comprising the steps of transferring a representation of said third identification signal group to the signal processing unit of said interaction system and comparing said third and first identification signal group representations in said signal processing unit and continuing interaction between said interaction system and said writable optical disk only when said comparison between said first and third identification signal group representations is positive.

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