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