首页>
外国专利>
Optical disc apparatus controlling irradiation position based on cross-correlation value between reproduction signal and decoded signal
Optical disc apparatus controlling irradiation position based on cross-correlation value between reproduction signal and decoded signal
展开▼
机译：根据再现信号和解码信号之间的互相关值控制照射位置的光盘设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
In an optical disc apparatus for reproducing information recorded on a track of an optical disc, an optical head irradiates a light beam onto the track, detects a reflected light reflected by the track, and generates a reproduction signal based on the reflected light. A decoder circuit decodes the reproduction signal, and generates a decoded signal including information recorded on the track. A correlation detector circuit calculates a cross-correlation value between the reproduction signal and the decoded signal. A servo circuit detects a deviation amount of an irradiation position of the light beam onto the track, from the reproduction signal, and controls the irradiation position of the optical head based on the cross-correlation value and the deviation amount.
展开▼
