Focusing and tracking apparatus for an optical data storage devi
Focusing and tracking error control system for an optical record
Focusing and tracking method and system for the read/write head
Focusing and tracking servo system for controlling the projectio
Focusing apparatus and optical disk apparatus using the same
Focusing bias adjusting apparatus and method in optical...
Focusing control apparatus for optimally directing light...
Focusing control apparatus using dynamic target value in relatio
Focusing control apparatus, recording medium, and optical...
Focusing control method for reading/writing optical disc
Focusing control system for use in an information recording and
Focusing detection optical path for an optical information proce
Focusing error detecting apparatus
Focusing error detecting equipment
Focusing error detecting system for optical head
FOCUSING METHOD, METHOD OF DETECTING FOCAL POINT DEVIATION,...
Focusing search circuit and focusing servo circuit which are use
Focusing servo apparatus for an optical disc
Focusing servo apparatus for optical pickup
Focusing servo controlling apparatus