Device for detecting traveling speed of pickup

Device for detecting traveling speed of pickup

Device for displacing a pickup head in multi-axial directions

Device for driving an objective lens

Device for driving optical system

Device for inspecting the surface of disc-shaped recording mediu

Device for opening and closing a tracking servo loop of an optic

Device for optical recording and read-out of data along a prerec

Device for optically reading optical recording medium

Device for optically tracking information

Device for playing optical discs

Device for processing optical data

Device for reading and/or writing information from/onto an...

Device for reading from and/or writing to optical recording...

Device for reading from or writing to optical recording media

Device for reading optical recording media having improved...

Device for recording and/or reproducing an optical record...

Device for recording or reproducing information on an optical re

Device for reducing cross talk in signal detecting apparatus...

Device for scanning a record carrier