A new radial tilt detection method: differential wobble phase detection

被引：4

作者：

Miyano, K ^{[1
]}

Nagara, T ^{[1
]}

机构：

[1] Sony Corp, Micro Syst Network Co, Device Solut Co, Opt Technol Dev Dept,Shinagawa Ku, Tokyo 1410001, Japan

来源：

OPTICAL DATA STORAGE 2004 | 2004年 / 5380卷

关键词：

radial tilt; wobble signal; CLV; phase difference; DVD-R/RW; DVD plus R/RW;

D O I：

10.1117/12.556787

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We developed a new radial tilt detection method which enables highly accurate detection and closed loop control for existing optical pickups. This method detects the radial tilt angle between the objective lens and the signal recording surface of the optical disk by comparing the phase of the wobble signal from the main spot with that from each side spot. In this paper, we describe the detection principle and the implementation of this method and show some experimental results from DVD-R disk and DVD+R disk. We consider that this method is applicable to other optical disk formats using wobbled groove with constant wavelength.

引用

页码：189 / 196

页数：8