Table-driven power utilization metrics

Technique for controlling tracking in an optical disc apparatus

Temperature-compensated optical pick-up device

Test writing method and information recording device

Three beam optical memory system

Three-beam optical servo tracking system with two-track parallel

Tilt compensation tracking control system for optical discs

Time-axis correcting circuit for recorded data reproducing devic

Track follower system employing an optical scanner with automati

Track follower system for correcting tangent errors in an optica

Tracking circuit for an optical information recording and reprod

Tracking control device

Tracking error detecting apparatus for an optical head with skew

Tracking error detecting apparatus for optical head

Tracking error detecting system for optical head

Tracking error signal detecting device with a two-beam system fo

Tracking servo signal generating device for an optical disc

Tracking servo system for an information recording disc player

Tracking signal error generator for optical information devices

Transferring information via the lead-in area of an information