| 摘要 |
PURPOSE:To simplify the servo control when data is recorded, by previously recording plural sector head parts before recording the data. CONSTITUTION:For an optical disk 1, head parts 4-0, 4-1... are formed at the head position of a sector at the part where a track is formed prior to the recording of the data. A correction is given to the shift of position while the head part is read and according to the rotation of the disk 1. Thus the beam irradiates a desired position in an accurate way. Under such conditions of control, the data to be recorded can be written to a data area. |
