| 摘要 |
<p>PROBLEM TO BE SOLVED: To actuate a manufacturing apparatus of a recording medium capable of recording data while suppressing influence to be exerted on tracking control.SOLUTION: A signal generation apparatus (400) includes: determination means (430) for determining timing for generating a control signal for actuating a manufacturing apparatus (300) of a recording medium (11) in which the same mark groups (MG) each configured by combining a pair of recording marks (ML, MR) shifted right and left by a predetermined distance around a track center are formed on respective same-rotation phase positions of a plurality of guide tracks and shifting an irradiation position of a cutting laser beam along a radial direction; and generation means (460) for generating a control signal for actuating the manufacturing apparatus so as to gradually shift an irradiation position while using a relatively large second target value and a relatively small first target value as target values of a shift distance of the irradiation position in the order.</p> |
