发明名称 OPTICAL DISK DEVICE AND CONTROL METHOD THEREFOR
摘要 PROBLEM TO BE SOLVED: To apply a stable tracking control to a DVD-RAM. SOLUTION: The optical disk device capable of reproducing the DVD-RAM is provided with a PPTE signal generator 11 generating push-pull tracking error signals, a high-pass filter 12 cutting the low frequency components of the PPTE signals, a CAPA balance error signal generator 13 detecting reflected light from a CAPA 29 arranged in a staggered shape in the preceding stage and poststage of one header area 26 and generating CAPA balance error signals CBE, a low-pass filter 14 cutting the high frequency components of the CAPA balance error signals CBE, a track acquisition detector 15 detecting whether or not a track is acquired by a beam spot 23 and a main control part 20 selecting either synthetic tracking error signals for which the PPTE signals and the CAPA balance error signals are superimposed or PPTE signals.
申请公布号 JP2003045049(A) 申请公布日期 2003.02.14
申请号 JP20010230435 申请日期 2001.07.30
申请人 TOSHIBA CORP 发明人 NAGAI HIRONORI;MAEDA SATORU
分类号 G11B7/09;(IPC1-7):G11B7/09 主分类号 G11B7/09
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