Toshihiro Shigemori

Demodulation circuit for demodulating wobbling signal

PLL circuit with band width varying in accordance with the frequency of an input signal

Recording timing control circuit for optical disk driving device

Tracking control system of an optical pick-up

Tracking servo method used in an optical disk drive unit

Tracking control device of an optical pick-up

Wobble signal detection circuit and optical disk device

Reference clock frequency divider

Recording clock generating apparatus for a data recording system

Optical disk drive having a time code detection device for reliably detecting a time code of a recordable optical disk