Patent ID: 7471601

Claim:
An optical disk recording/reproducing method comprising: determining a first recording parameter used to set a recording waveform according to a first recording parameter adjusting method, recording information on a medium by use of the first recording parameter, deriving a first evaluation value of signal quality based on a reproduction signal of the recording information by use of a signal quality evaluating method, terminating a recording parameter adjusting operation when the first evaluation value satisfies a previously specified value, determining a second recording parameter used to set a recording waveform according to a second recording parameter adjusting method when the first evaluation value does not satisfy the previously specified value, recording information on the medium by use of the second recording parameter, deriving a second evaluation value of signal quality based on a reproduction signal of the recording information by use of the signal quality evaluating method, terminating the recording parameter adjusting operation when the second evaluation value satisfies a previously specified value, and determining an improper optical disk when the second evaluation value does not satisfy the previously specified value, wherein the first recording parameter adjusting method includes at least one of an adjusting method which does not depend on a recording data bit string and an adjusting method which depends on consecutive length of code bits “1” of a recording data bit string, and the second recording parameter adjusting method is an adjusting method which depends on consecutive length of code bits “1” of a recording data bit string and consecutive length of code bits “0” adjacent thereto.