Apparatus for correcting asymmetry of reproduction signals...

Apparatus for detecting a pre-pit signal

Apparatus for detecting delete patterns of optical discs

Apparatus for driving a record carrier

Apparatus for exposing optical disc master plate and method...

Apparatus for exposing optical disc master plate and method...

Apparatus for forming an image on an optical disk

Apparatus for furnishing data signals from an optically readable

Apparatus for generating clock signals for data reproduction

Apparatus for manufacturing information record medium,...

Apparatus for producing digital information from a transmission

Apparatus for reading an information pattern from a record carri

Apparatus for recording a wobbling, spiral guide groove on an op

Apparatus for recording and reproducing data on a disk

Apparatus for recording and reproducing information

Apparatus for recording and/or reproducing data with respect...

Apparatus for recording data on optical disk

Apparatus for recording information in information recording...

Apparatus for reproducing an encoded digital signal based on a f

Apparatus for reproducing an optical recording medium having fir