可擦写相变与4×只读双功能光存储

OVERWRITABLE PHASE-CHANGE & 4×-SPEED ROM DUAL-FUNCTIONAL OPTICAL STORAGE

对国际新推出的可擦写相变与4×只读双功能光存储系统PD进行了技术性论述分析，内容包括：直接重写相变光盘介质、PD的新型光学头技术以及双功能驱动的机理。

This paper presents an overview of the technology of an overwritable phase-change(OPC)& 4 × -speed read only memory(ROM ) dual-functional optical storage system-PD,which won the 'Best Peripheral' prize in COMDEX in 1994. The contents include:OPC optical disk with high sensitivity and reliability,the new and micro optical head of PD and the mechanism of the dual-functional drive.