Optical pickup and information device
Optical pickup, optical information recording carrier and record
Optical read-out audio check disc with semitransparent defects o
Optical readable carrier with diffractive tracks containing info
Optical record carrier
Optical record carrier
Optical record carrier and method and apparatus for increasing t
Optical record carrier and method for recording and reproducing
Optical record carrier and method for recording and reproducing
Optical record carrier and scanning device
Optical record carrier having contrast enhancing information and
Optical record carrier having position indentifying track modula
Optical record carrier with grooves having wobbles with...
Optical record carrier, drive unit, data updating method and...
Optical record disc
Optical recording and reproducing apparatus capable of...
Optical recording and retrieving disc
Optical recording apparatus capable of changing the length...
Optical recording apparatus capable of changing the length...
Optical recording carrier having groove wobble phase changes...