Optical disc recording and reproducing apparatus
Optical disc with a control chip
Optical disk, optical disk recording and reproducing apparatus a
Optical memory card in the form of a disk
Optical memory medium and its information recording and erasing
Optical recording and reproducing method utilizing recording med
Optical recording apparatus using optical fibers for guiding las
Optical recording medium having a non-volatile identification co
Optical recording medium having a non-volatile identification co
Optical recording medium having a parameter for identifying the
Optical recording medium having a third non-linear optical refle
Optical servo for magnetic disks