| 摘要 |
Where data are recorded onto a phase-change disk according to the MCAV (modified constant angular velocity) scheme to enable high-density recording and high-speed random access, marks and spaces are formed by using recording pulses having a front end pulse and a rear end pulse that are delayed so as to be suited to each of a low linear velocity zone and a high linear velocity zone. This is done by changing the pulse widths of the front end pulse and the rear end pulse by varying the positions of the rising edge and the falling edge of the front end pulse and the rear end pulse, respectively, that constitute the recording pulses. Thus, recording compensation suitable for each linear velocity is effected.
|
