SBIR Phase I: High-Speed, High-Density Optical Disk Data Storage Based On A New Coding Concept

这个小企业创新研究（SBIR）第一阶段项目研究一种用于高速、高密度光盘数据存储的新编码技术。众所周知，传统的光盘存储是基于在光盘（如cd和DVD）上记录和读出二进制数据坑。由于衍射限制，这些凹坑的大小可以用光学方法记录和读出，从而限制了数据存储密度。提出的研究探索了一种新的编码概念，可以方便地在一个坑中记录和读出许多位数据。因此，使用与DVD相同的衍射极限聚焦光斑尺寸可以显着增加数据存储密度。所提出的概念由商业上可用的数据记录材料支持，从而产生只读的超高密度光盘。该概念还得到了一种新型离子交换光致变色玻璃的支持，这种玻璃可擦除和可重写磁盘具有出色的室内环境稳定性和数据记录后无需处理。使用表查找的快速数据代码识别也可以提高数据访问速率。第一阶段的研究将证明磁盘存储概念的可行性。二期将实现完整的磁盘数据存储系统。本计画将展示高速、高密度光碟资料储存的新编码概念的可行性。使用这种编码概念可以显著提高商业和军事领域的磁盘存储密度，例如在线存储、图书馆档案应用、医学应用和军事目标识别的图像存储和处理，以及快速访问大型智能数据库。

This Small Business Innovation Research (SBIR) Phase I project studies a new coding technique for high-speed, high-density optical disk data storage. It is well known that conventional optical disk storage is based on recording and readout binary data pits in an optical disk such as compact disk and DVD. The size of these pits that can be recorded and readout optically due to diffraction limitation thus limit the data storage density. The proposed research explores a new coding concept that can facilitate recording and readout many bits of data in a single pit. The data storage density can thus be significantly increased using the same diffraction limited focusing spot size as DVD. The proposed concept is supported by commercially available data recording material to result in a read-only super high-density optical disk. The concept is also supported by a new ion-exchanged photochromic glass to result in an erasable and rewritable disk with excellent room environmental stability and non-processing after data recording. Fast data code recognition using table lookup can improve the data access rate as well. Phase I research will demonstrate the feasibility of the proposed disk storage concept. Phase II will realize a complete disk data storage system.This project will demonstrate the feasibility of a new coding concept for high-speed, high-density optical disk data storage. Using such a coding concept can significantly increase the disk storage density for commercial and military, e.g. on-line storage, library archival applications, image storage and processing for medical applications and military target identification, and fast access to large intelligent databases.