| 摘要 |
PURPOSE: An information recording medium, a method for generating a flag, a method for producing the information recording medium, a method for adjusting recording conditions of the information recording medium, a recording method for the information recording medium and an information recording device are provided to properly record information irrespective of a recording speed without the information recording device's erroneous learning of an optimum recording power when information is recorded into a medium corresponding to a high-speed recording. CONSTITUTION: An 11T single signal and a 3T single signal are recorded on a DVD-RW(Digital Versatile Disk Rewritable) at an optimum recording power(P1) and a recording power(P2) of an intensity of 85% with relative to the optimum recording power(P1). Then these signals are reproduced to calculate asymmetry values(A1,A2). If difference(A1-A2) between both asymmetry values(A1,A2) is equal to or greater than a reference value of 0.05, it is judged that a method using the asymmetry values(A1,A2) is available for OPC(Optimum Power Control). If the difference(A1-A2) is less than a reference value of 0.05, it is judged that the method is not available. Then, the judgment result is recorded on the DVD-RW as a flag. A DVD drive judges whether the asymmetry values(A1,A2) are used for the OPC on the basis of the flag.
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