Fixed- block architecture embedded servo disk drive without data
Flying optical recording/playback head and method for...
Focus control via AC input signal
Focus control via AC input signal
Focus detection in a digital focus servo system
Focus search method and reproducing apparatus
Focused spot position-discriminating system and optical disk wit
Focusing and tracking servo circuit in an optical disk device
Focusing method of layer jumping for an optical storage device
Focusing state monitoring apparatus in optical recording apparat
Frame number detection for signals produced from optical disk
Front photo detector having no gain selection switch,...