Patent ID: 8289827

Claim:
A recording method for recording information on an optical disk on which information as to laser pulse timings at a plurality of recording speeds is recorded, the method comprising: wherein the laser pulse timings depend on a plurality of parameters; wherein the parameters comprise at least a first parameter that is a value obtained by normalizing a time difference between a rise edge or a fall edge of a reference clock to be used for recording and a fall edge of a laser pulse in accordance with a recording clock cycle, and a second parameter that is a value obtained by normalizing a width of the laser pulse in accordance with the recording clock cycle; reading, from the optical disk, information as to the first parameter and the second at a first recording speed and a second recording speed; adjusting the first parameter at the first speed and the first parameter at the second speed; determining a proportional relationship between the adjusted first parameter at the first speed and the adjusted first parameter at the second speed; determining a proportional relationship between the read second parameter at the first speed and the read second parameter at the second speed; and performing a CAV (Constant Angular Velocity) recording by using the proportional relationship between the adjusted first parameter at the first speed and the adjusted first parameter at the second speed and the proportional relationship between the read second parameter at the first speed and the read second parameter at the second speed.