Audio information recording medium and audio information...

Audio information recording medium and audio information...

Audio player

Audio recording medium, methods of recording data on and...

Audio reproducing apparatus having a playback resume function af

Audio reproducing device

Audio system which not only enables the application of the surro

Audio system, and disc reproduction device and audio output...

Automatic calibration of the output power of a pickup head...

Automatic focus servomechanism in optical information reading de

Automatic focusing device

Automatic focusing device in an optical type data reproducing ap

Automatic focusing system for reading information from a recordi

Automatic gain control method and apparatus in optical disk syst

Automatic write strategy calibration method for optical drive