Title :
High speed optical disk control system with 3-dimensional spot wobbling
Author :
Matsumoto, Kiyoshi ; Maeda, Takeshi
Author_Institution :
Hitachi Ltd., Tokyo, Japan
fDate :
11/1/1991 12:00:00 AM
Abstract :
An acoustooptic (A/O) deflector has been introduced to act as a multifunctional fine actuator. A three-dimensional spot wobbling method with A/O deflector has been proposed, and the detection characteristics of focusing and tracking error signals have been confirmed. A high-speed optical disk control system, together with good access performance, has been achieved. Due to this achievement, small, simple, and high-performance optical disk systems should be available in the future
Keywords :
acousto-optical devices; actuators; error detection; optical deflectors; optical disc storage; position control; servomechanisms; signal detection; vibration control; acousto-optic deflector; detection characteristics; focus error signal detection; high-speed optical disk control system; multifunctional fine actuator; three-dimensional spot wobbling method; tracking error signals; Acoustic beams; Actuators; Control systems; Frequency; High speed optical techniques; Laser beams; Optical control; Optical refraction; Optical variables control; Signal detection;
Journal_Title :
Magnetics, IEEE Transactions on
