Edge detection in phase-change optical data storage

被引：7

作者：

Peng, CB ^{[1
]}

Mansuripur, M ^{[1
]}

Kim, WM ^{[1
]}

Kim, SG ^{[1
]}

机构：

[1] KOREA ADV INST SCI & TECHNOL, SEOUL, SOUTH KOREA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 15期

关键词：

D O I：

10.1063/1.119350

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A direct mark edge detection scheme for readout in phase-change optical disk systems is described. The medium for edge detetection must be optimized to have a 90 degrees phase difference between the amorphous mark and the crystalline space. Theoretical analy sis and numerical simulation have shown that the readout signal using mark edge detection is as good as that using conventional detection of reflectivity for long marks and superior for short marks. Noise level at the output of differential edge detection is lower than that at the output of conventional detection. We also show experimental results that confirm these predictions. (C) 1997 Americans Institute of Physics.

引用

页码：2088 / 2090

页数：3

共 9 条

[1] DIFFRACTION ANALYSIS OF OPTICAL-DISK READOUT SIGNAL DETERIORATION CAUSED BY MARK-PROFILE FLUCTUATION [J].