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Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus

  • US 6,552,982 B1
  • Filed: 02/02/2000
  • Issued: 04/22/2003
  • Est. Priority Date: 03/08/1999
  • Status: Expired due to Term
First Claim
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1. An information recording and reproduction method for an information recording medium including a data recording area for recording data, a first drive information area for recording first drive information, and a second drive information area for recording second drive information, wherein:

  • the first drive information and the second drive information each include a plurality of recording and reproduction conditions, the method comprising the steps of;

    (a) determining whether or not the first drive information can be read from the first drive information area;

    (b) determining whether or not the plurality of recording and reproduction conditions included in the first drive information include a recording and reproduction condition usable by an information recording and reproduction apparatus having the information recording medium mounted thereon; and

    (c) when the first drive information can be read and the first drive information does not include the usable recording and reproduction condition, adjusting a new recording and reproduction condition usable by the information recording and reproduction apparatus having the information recording medium mounted thereon, and using the new recording and reproduction condition and the first drive information to update the first drive information and the second drive information, wherein the first drive information area and the second drive information area each include areas assigned numbers 0 through M (where M is an integer greater than

         0), the first drive information and the second drive information each include M+1 recording and reproduction conditions, the M+1 recording and reproduction conditions are written in the areas of each of the first drive information area and the second drive information area assigned numbers 0 through M in the order from the recording and reproduction condition recorded on the information recording medium most recently to the recording and reproduction condition recorded on the information medium least recently, and the step (c) includes the steps of;

    (c-1) writing contents of the recording and reproduction conditions, which are written in the areas of the first drive information area assigned numbers 0 through M−

    1, into the areas of each of the first drive information area and the second drive information area assigned numbers 1 through M; and

    (c-2) writing a content of the new recording and reproduction condition in the area of each of the first drive information area and the second drive information area assigned number 0.

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