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OPTICAL STORAGE MEDIUM HAVING DISTORTION REGIONS, AND A METHOD OF MODIFYING AN OPTICAL STORAGE MEDIUM TO INCLUDE DISTORTION REGIONS

  • US 20080212450A1
  • Filed: 04/17/2008
  • Published: 09/04/2008
  • Est. Priority Date: 12/14/2000
  • Status: Active Grant
First Claim
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1. A method for modifying an optical path of an optical medium, the optical medium including a first layer adjacent a data layer comprising:

  • selecting a region of the optical medium be distorted; and

    prior to a reading operation of the medium, distorting the region of the data layer of the optical medium such that a reading operation of data stored in the data layer corresponding to the distorted region is modified, the distorted region maintaining its optical characteristics following irradiation of the distorted region during the reading operation.

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