Optical disk system having an objective lens with a numerical ap
Optical disk unit, control method thereof, optical information r
Optical disk using land and groove tracks
Optical disk which reduces cross erasure of data recorded on lan
Optical disk with a groove for defining serial data modulated in
Optical disk with a memory chip mounted thereon
Optical disk with a recording layer composed of tellurium, antim
Optical disk with a uniform film thickness by having different a
Optical disk with copy protection, and apparatus and method for
Optical disk with erasable surface and manufacturing method...
Optical disk with glass substrate and method of producing same
Optical disk with grooves and pits of different depths
Optical disk with identification phase-encoded area
Optical disk with information signal representing a...
Optical disk with marks used for calibrating an optical detector
Optical disk with pattern and fabrication method thereof
Optical disk with prerecorded control information
Optical disk with recesses inside an inner circumference of...
Optical disk with reinforcing plate
Optical disk with sectional trapezoidal pits and optical disk ap