Alignment and Design Conditions for Optical Memory Systems Using Fourier Transform Holograms

With new resources gained from licensing Ovshinsky’s discoveries, his company, renamed Energy Conversion Devices (ECD), expanded into an ambitious research and development laboratory. Its growing staff of highly trained scientists pursued both theoretical explanations and practical applications of the Ovshinsky effect, in the process helping to open the vast scientific field of materials research. Their first success was the optical phase-change memory that became the basis of rewritable CDs and DVDs. The new companies that ECD established circa 1970 to commercialize instant imaging and optical memory systems based on Ovshinsky’s new “Ovonic” proprietary materials did not succeed, however, and ECD struggled to survive. Its fortunes dramatically improved a decade later when its new photovoltaic program, aimed at developing and producing thin-film amorphous silicon solar cells in large quantities attracted major funding from the prominent oil corporation Atlantic Richfield (ARCO).

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Three-dimensional optical memory systems based on photochromic materials: polarization control of two-color data writing and the possibility of nondestructive data reading

10.1117/12.304933 ◽

1998 ◽

Cited By ~ 2

Author(s):

D. A. Akimov ◽

Andrei B. Fedotov ◽

Nikolai I. Koroteev ◽

S. A. Magnitskii ◽

A. N. Naumov ◽

...

Keyword(s):

Three Dimensional ◽

Optical Memory ◽

Memory Systems ◽

Polarization Control ◽

Color Data ◽

Photochromic Materials ◽

Data Reading

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INFORMATION REPRODUCTION SYSTEMS IN INFORMATION BUSINESS LOGISTICS

ENGINEERING, ENERGY, TRANSPORT AIC ◽

10.37128/2520-6168-2021-4-6 ◽

2021 ◽

pp. 56-65

Author(s):

Volontyr Lyudmyla

Keyword(s):

Information System ◽

Information Technologies ◽

Modular Design ◽

Optical Memory ◽

Electric Circuit ◽

Memory Systems ◽

Information Support ◽

Optical Systems ◽

Video Information ◽

The Creation

The article considers the fundamentals of the information reproduction systems formation in the optoelectronic element base for information logistics systems. The use of optoelectronic elements for information processing has been considered, namely discrete optoelectronic digital systems, analog systems, optical memory systems, optical systems of input-output of information in computers, systems based on fiber devices of neuristor type. It is emphasized that modern logistics is impossible without the active use of information technology. The functions of information support of managerial influences can be performed by information technologies used today in logistics. To perform the tasks of financial flow management, these technologies can be supplemented by modules of eye-processing of the information. Logic-clock quantron automatic devices based on optocouplers are suitable for creating parallel information operating environments, which is a universal means of converting and presenting information. This approach leads to the creation of matrix-type devices that are able not only to receive information but also to process it. One of the promising areas of use of optoelectronic matrix systems is the creation of flat operating screens for parallel reception and display of information. The paper presents the classification of operating screens according to such features as: the principle of displaying information, the type of input information, the type of output information, the method of image formation, the number of consumers of the information. The analysis of electric circuit diagram of modern LED matrix video screens, in particular of a typesetting-modular design has been presented. A comparison of the forms of organization of matrix video screens is made, and it is emphasized that the most economical in terms of the number of memory trigger elements per one LED of the display cell is a video information system based on the structure of the third group video screen. The structure of the video information system is optimized according to the criterion of optimality – the maximum image quality on the matrix screen and the minimum screen complexity, which is determined by the circuit features of the microelectronic circuits.

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