Study on data storage format of a volume holographic memory

2003 ◽  
Author(s):  
Changsheng Xie ◽  
Wei Li ◽  
Xiandeng Pei
1998 ◽  
Author(s):  
Kai-Oliver Mueller ◽  
Cornelia Denz ◽  
Torsten Rauch ◽  
Thorsten Heimann ◽  
J. Trumpfheller ◽  
...  

Photonics ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 70
Author(s):  
Hirayama ◽  
Fujimura ◽  
Umegaki ◽  
Tanaka ◽  
Shimura

Holographic memory is currently attracting attention as a data storage system capable of achieving a data transfer rate of about 105~106105~106 times that of an optical disc such as Blu-ray disc. In conventional holographic memory, data is generally recorded by optical writing using volume holograms. However, a volume hologram has the problem not only that it is required to have high mechanical accuracy of a system and low coefficient of thermal expansion of a recording medium, because reconstruction tolerance is extremely low, but also that duplicating time efficiency is poor because whole data cannot be recorded at once. In this paper we proposed surface holographic memory that achieved a high data transfer rate, stable readout performance, and collective duplication by expressing holograms with fine surface asperity. Furthermore, the theoretical formulas of recording and reconstruction processes in the proposed system were derived and the reconstruction characteristics of the hologram were evaluated by numerical simulation. As a result, the proposed method generated reconstructed image readout with sufficient signal for a single page recording. However, the reconstructed image had noise, which was particular to a surface holographic memory.


Author(s):  
Elizangela Dias Pereira ◽  
Maria Inacia Favila Salum ◽  
Carlos Manoel Taboada Rodriguez

This paper presents a new context in the logistic field of organizations. This concept emerged due to the expansion of the application of the original concept proposed by the area of software development, in which the goal was to enable the exchange of information between different systems in such a way that no extra effort was needed. Therefore, this area of Information Technology (IT) is constituted by the standardization of programming language, commands, data storage format, among others. Eventually, principles that were already quite widespread in the sphere of IT gradually became used in different areas, untilit started being used amongst the business field. Thus, in order to make corporate processes interoperable, it has contributed to approach and facilitate the communication between companies based on some of the principles of the software field, such as standardization, form of communication, frequency of orders…etc. On the logistic field, which actually connects industrial and commercial companies through the flux of material and related information, the inoperability has by goal help on the resolution of problems regarding received and sent information management, fulfilling more rapidly the demands and opportunities of the market. In this context, we intend to define the part of interoperability on organizational competitiveness.


Author(s):  
N Yu Sevastianova ◽  
N S Vinogradova

One of the features of a remote sensing data storage is the widespread utilization of large-capacity disk arrays. Emergency situations arising from the use of arrays can lead to the fact that the remote sensing data, usually stored in uncompressed form, may become partially damaged. But even with incomplete recovery, this kind of data can be used in the future to solve production problems. However, this recovery is sometimes hampered by incomplete knowledge of the format of the corrupted data. The article describes an approach to automatic recognition of multichannel data interleaving type (BIP, BIL or BSQ) and its application to a recovery of SPOT-4 remote sensing data stored in the segment format "SEG", which were damaged after a disk array failure.


2012 ◽  
Vol 468-471 ◽  
pp. 2441-2444
Author(s):  
Gang Yang

After generating panorama, panoramic browser can display it.In order to develop the browser, Using glscene component developed in Delphi,which encapsulates functions of OpenGL and includes a set of base classes that develop quickly three-dimension graphics system, then putting forward an open format based on XML,which can prevent the display format from confining the data storage format,to show panoramic space of different systems in the brower,and hotspot principle is adopted to achieve different scene switch.


Author(s):  
Joachim Wolff ◽  
Nezar Abdennur ◽  
Rolf Backofen ◽  
Björn Grüning

2015 ◽  
Vol 0 (4) ◽  
pp. 3
Author(s):  
Дмитрий Алексеевич Чувиков ◽  
Виктор Петрович Феоктистов

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1841-1845 ◽  
Author(s):  
Katsunori Kawano ◽  
Jiro Minabe ◽  
Tsutomu Ishii

1997 ◽  
Vol 08 (04) ◽  
pp. 749-765
Author(s):  
C. P. Yang ◽  
S. H. Lin ◽  
M. L. Hsieh ◽  
K. Y. Hsu ◽  
T. C. Hsieh

A read-only holographic memory for digital data storage is experimentally demonstrated. Techniques for coding and decoding of optical signals, and the interface techniques between the optical memory and a personal computer are described. The performance of the optical memory and the techniques for improving the bit error rate (BER) are presented.


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