Objective lens drive device with tracking error correction with
Objective lens driving device for tracking and focus corrections
Objective lens driving device with multipole magnet
Objective lens mount and drive for optical disc player
Objective lens-driving unit
Off-track bit shift compensation apparatus
Optical apparatus used for optical disk recording and...
Optical card reading and writing method with redundant directory
Optical card reproducing apparatus provided with a function of g
Optical characteristic measuring apparatus for an optical record
Optical data reading apparatus having means for detecting data d
Optical data recording method, and data recording medium
Optical data recording method, and data recording medium
Optical data reproducing devices having improved trick play capa
Optical device for controlling a light beam
Optical device for optically recording and reproducing informati
Optical disc and contamination detection system in an apparatus
Optical disc and optical disc apparatus for forming wobbled trac
Optical disc apparatus
Optical disc apparatus