Track center servo and radial tilt servo system for a digital versatile rewritable disc (DVD-RAM)

被引：10

作者：

Yamada, S ^{[1
]}

Nishiwaki, S ^{[1
]}

Nakamura, A ^{[1
]}

Ishida, T ^{[1
]}

Yamaguchi, H ^{[1
]}

机构：

[1] Matsushita Elect Ind Co Ltd, Opt Disk Syst Dev Ctr, Kadoma, Osaka 5718501, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 2B期

关键词：

track center signal; radial tilt servo; DVD-RAM disc; push-pull tracking error signal; CAPA;

D O I：

10.1143/JJAP.39.867

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In the push-pull tracking error signal, which is generally used for rewritable discs, detection error occurs due to disc radial tilt. We have developed a track center detection method in which the center of a track is accurately detected using the complementary allocated pit address (CAPA) of a digital versatile rewritable disc (DVD-RAM). The track center servo corrects the tracking deviation caused by the detection error. We have also developed a method for detecting the disc radial tilt based on the fact that the level of the push-pull tracking error signal indicates the amount of disc radial tilt when the track center servo is in operation. The developed servo system was introduced in a 4.7-G byte DVD-RAM disc drive, and it has been confirmed that jitter deterioration during reproduction was reduced to 0.5% or lower in the range of +/-0.5 degree of disc radial tilt.

引用

页码：867 / 870

页数：4