Partial beam focus sensing in an optical recording system
Performance information recording/reproducing apparatus having c
Periodical signal detection circuit within a variable window len
Periodical signal detection circuit within a variable window len
Phase change optical recording device and method employing a las
Phase compensation apparatus for an optical information recordin
Phase-synchronous controller for production of reference clock s
Pick-up head for optical information storage disk
Pickup assembly for disc player
Pickup device and information recording/reproducing...
Playback apparatus and sync signal detecting method
Playback apparatus for a record carrier providing physical...
Playing method for disk player
Plural beam tracking servo including delay compensation
Positioning controller
Power adjustment method, information write method and...
Power control of laser diode in an optical...
Power determining method in optical disk recording apparatus...
Power determining method, single-sided multilayer optical...
Power saving method and apparatus for intermittently reading rep