Vibration imparted focus search devices in an optical type disc

Vibration-resistant playback device

Videodisc autofocus device

Videodisc focusing and tracking servo

Wave-shaping apparatus and reproduction signal processing...

Wide capture range circuitry

Wobble demodulation for high density optical recording media

Wobble demodulator and wobble demodulation method

Wobble detection for playback of optical recording media

Wobble signal detecting circuit for optical disk device and...

Wobble signal detection circuit and optical disk device

Wobble signal reproducing circuit

Wobble signal reproducing circuit

Wobble signal reproducing circuit

Wobble signal reproducing device and method

Wobble-signal detecting device and information recording...

Wobbling signal demodulation method, wobbling signal...

Writable optical disc having a plurality of chapters each having

Writable optical drive with dynamically variable linear...

Write adjustment method