| 摘要 |
PROBLEM TO BE SOLVED: To favorably demodulate both of MSK modulation and STW modulation included in a wobble signal. SOLUTION: For a MSK modulation signal included in the wobble signal, its demodulation performance is improved by performing amplitude modulation (12) and executing demodulation processing (21), and also for a STW modulation signal, the deterioration of demodulation performance is prevented by amplitude adjustment by executing demodulation processing (22) without performing amplitude adjustment. Thereby, an effect for improving the reading performance of an address is obtained to the maximum using both demodulation results. COPYRIGHT: (C)2006,JPO&NCIPI
|
