Recording/reproducing optical head producing focusing error sign

Recording/reproduction apparatus and recording/reproduction...

Recording/reproduction apparatus, recording/reproduction...

Reducing amplitude variations of optical disk readback signals a

Reference signal detection circuit in a rotary recording medium

Regenerating device for optical recording medium in which overla

Relative position sensing calibration for optical storage device

Reproducing apparatus

Reproducing apparatus which can play multiple types of discs and

Reproducing or recording device for reproducing, or recording on

Reproducing transducer feeding device in a rotary recording medi

Reproduction apparatus and method

Reproduction apparatus for disk-like recording medium

Reproduction device for optical disks

Robust and versatile focus/tracking method and system for...

Rotary drum tape recording apparatus with controlling optical re

Rotary recording medium having a guide track and recording and r

Rotary recording medium having a guide track and recording and r

Rotary recording medium reproducing apparatus with a tracking co

Rotary-type optical head