| 摘要 |
PURPOSE:To improve a C/N and to perform superior recording in the case of magneto-optical recording. CONSTITUTION:Input data are supplied through an input terminal 1 to an encoder 2 and converted to a prescribed information to be recorded. The signals of the information are supplied to a pulse train generating circuit 3, a prescribed pulse train is generated, and the pulse train is supplied to a control circuit 4 of a laser diode. The signals from the control circuit 4 are supplied to an optical head 5, and laser light to irradiate a disk 6 is modulated. On the other hand, a driving control circuit 7 composed of a microcomputer is provided, and signals from the driving control circuit 7 are supplied to the control circuit 4. Further, signals from the driving control circuit 7 are supplied to a driving circuit 8, and signals from the driving circuit 8 are supplied to a head 9 for bias magnetic field generation provided on the opposite side of the disk 6. Then, signals from the driving control circuit 7 are supplied to a servo circuit 10, and a spindle motor 11 for rotation driving use of the optical head 5 and the disk 6 is controlled. |
