デジタル情報の恒久的保存のためのアーカイブ光ディスクの期待寿命評価方法

In the era of digital big data, the users demand a stable preservation method of a huge digital information data. Today, we have three digital data storage media-type; Solid state (semiconductor,SRAM etc.), Magnetic (HDD, Tape) and Optical discs (CD, DVD, BD). Otherwise, in the today\u27s carbon-conscious society, the optical disc technology be refocused on archiving solution for digital data information. Then, Recordable optical disc in professional use would be the most promising one in those digital storage media. This paper reports discussion of the life expectancy evaluation method of optical disk for data archiving based on the ISO/IEC standard.In the era of digital big data, the users demand a stable preservation method of a huge digital information data. Today, we have three digital data storage media-type; Solid state (semiconductor,SRAM etc.), Magnetic (HDD, Tape) and Optical discs (CD, DVD, BD). Otherwise, in the today\u27s carbon-conscious society, the optical disc technology be refocused on archiving solution for digital data information. Then, Recordable optical disc in professional use would be the most promising one in those digital storage media. This paper reports discussion of the life expectancy evaluation method of optical disk for data archiving based on the ISO/IEC standard

Video-Based Information Systems in Academic Library Media Centers

published or submitted for publicatio

ArchiVISTA: A New Horizon in Providing Access to Visual Records of the National Archives of Canada

published or submitted for publicatio

Reviews

The Hutchinson Electronic Encyclopedia, First Electronic Version, Oxford, Random Century and Attica Cybernetics, 1991. ISBN: 1–873472–00–5. Price £99

A quantum study of multi-bit phase coding for optical storage

We propose a scheme which encodes information in both the longitudinal and spatial transverse phases of a continuous-wave optical beam. A split detector-based interferometric scheme is then introduced to optimally detect both encoded phase signals. In contrast to present-day optical storage devices, our phase coding scheme has an information storage capacity which scales with the power of the read-out optical beam. We analyse the maximum number of encoding possibilities at the shot noise limit. In addition, we show that using squeezed light, the shot noise limit can be overcome and the number of encoding possibilities increased. We discuss a possible application of our phase coding scheme for increasing the capacities of optical storage devices.Comment: 8 pages, 7 figures (Please email author for a PDF file if the manuscript does not turn out properly

3D Data Storage

This paper discusses holographic data storage as an option for high-density data storage. It describes the technology and its benefits

Оптические диски для долговременного хранения информации

Рассмотрены технологии изготовления оптических дисковых носителей, предназначенных для долговременного хранения информации. Показано, что использование сапфировых подложек позволяет создать носители, на которых прогнозируемый срок хранения данных составляет тысячи лет. Рассмотрены способы формирования наноструктурного рельефа на поверхности высокостабильных материалов. Представлены экспериментальные результаты исследования процесса записи информации на оптические диски с сапфировыми подложками.Розглянуто технології виготовлення оптичних дискових носіїв, які призначені для довготермінового зберігання інформації. Показано, що використання сапфірових підкладок дозволяє створити носії, на яких прогнозований термін зберігання даних становить тисячі років. Розглянуто способи формування наноструктурного рельєфу на поверхні високостабільних матеріялів. Представлено експериментальні результати досліджень процесу запису інформації на оптичні диски з сапфіровими підкладками.Manufacture techniques of optical disc media for long-term data storage are considered. As demonstrated, the use of sapphire substrates allows creating media with the predicted data-storage term of thousands of years. Techniques for nanostructured relief forming on high-stable material surface are studied. Experimental results for process of data recording on optical disks with sapphire substrates are presented