Microprocessor controlled focussing servo acquisition

Midi standards recorded information reproducing device with repe

Mobile pre-etched data carrier and an optical tracking device us

Monitor and adjust method for optical disc recording

Motor control system having output clamp function and method...

Moving system for a videodisk reader-recorder

Multi-layer optical disc, and recording method and apparatus...

Multi-layer writable optical record carrier with an optimum...

Multi-layer writable optical record carrier with an optimum...

Multi-layered recording medium, and method and apparatus for...

Multi-level information recording apparatus, multi-level...

Multi-level optical recording medium reproducing method and...

Multi-speed recording for multi-layer disc

Multiple beam optical disk apparatus with multiple clock extract

Multiple clock tracks for erasable and rewriteable optical disks

Musical information recording and reproducing technique for use

Noise removal using 180-degree or 360-degree phase shifting...

Objective driving device for an optical disk apparatus

Objective lens actuator having movements restricting control mea

Objective lens drive device