4.7 GB Phase-Change Optical Disk for an Authoring System of Digital Versatile Disc

Center, Matsushita Electric Industrial Co. Kenichi NagataOptical Disk Systems Development; Saimi, Tetsuo; Furukawa, Shigeaki; Center, Matsushita Electric Industrial Co. Kenichi NishiuchiOptical Disk Systems Development; Yamada, Noboru; Akahira, Nobuo

doi:10.1143/jjap.37.2236

Cited by 5 publications

(3 citation statements)

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“…[16][17][18][19] The essential difference between these two formats lies in the way the data is addressed. Similar to the CD-RW, the DVD + RW developed by Philips and Sony have a wavelike structure in the walls of the pre-grooves with a frequency modulation of 817.4 kHz so that the burner can recognize where the laser is located and can control the speed of rotation when recording in the still empty pregrooves.…”

Section: Rewritable Dvdmentioning

confidence: 99%

Current Developments in Optical Data Storage with Organic Dyes

Mustroph

Stollenwerk

Bressau³

2006

Angew Chem Int Ed

206

109

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The main motivation for the development of digital data storage has been the improvement in play-back quality and the increase in storage capacity. In 1982 Philips and Sony introduced the first technically and economically successful system based on this-the compact disc (CD) and a compatible player. A very broad diversity of optical data recording formats are available today, and a difference is drawn between prerecorded, recordable, and rewritable media. This Review gives an overview of the systems used, the main features of production, and then concentrates on the properties of the organic dyes that are used in recordable systems. Dyestuffs chemistry has gained the reputation of having become a mature field of activity. Is this prejudice or a justified swan song for dyestuffs chemistry? When applications in optical data storage are considered, it is evident that even today progresses such as CD-R and DVD/R would not be feasible without functional dyes.

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Section: Rewritable Dvdmentioning

confidence: 99%

Current Developments in Optical Data Storage with Organic Dyes

Mustroph

Stollenwerk

Bressau³

2006

Angew Chem Int Ed

206

109

View full text Add to dashboard Cite

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“…This was however accelerated by the revelation that when exposed to a laser pulse, metal alloys along the GeTe-Sb 2 Te 3 pseudo-binary line exhibits a very large optical contrast and a very fast switching speed between an amorphous state with low reflectivity and a crystalline state with high reflectivity. [146][147][148][149] This finding has led to the application of PCMs on optical storage disks including DVD-RAM, [150][151][152][153] DVD-R/W, [154][155][156][157] and recent Blu-Ray disks, [158][159][160][161] and it has triggered the emergence of a new memory device using PCMs, so called PCRAM. It should be noted that most of the PCMs used today are chalcogenidebased alloys that contain chalgogenide elements (O, S, Se, Te, Po) in Group VI of the periodic table.…”

Section: Phase-change Materialsmentioning

confidence: 99%

Physical principles and current status of emerging non-volatile solid state memories

Wang

Yang

Wen

2015

Electron. Mater. Lett.

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Today the influence of non-volatile solid-state memories on persons' lives has become more prominent because of their non-volatility, low data latency, and high robustness. As a pioneering technology that is representative of non-volatile solidstate memories, flash memory has recently seen widespread application in many areas ranging from electronic appliances, such as cell phones and digital cameras, to external storage devices such as universal serial bus (USB) memory. Moreover, owing to its large storage capacity, it is expected that in the near future, flash memory will replace hard-disk drives as a dominant technology in the mass storage market, especially because of recently emerging solid-state drives. However, the rapid growth of the global digital data has led to the need for flash memories to have larger storage capacity, thus requiring a further downscaling of the cell size. Such a miniaturization is expected to be extremely difficult because of the well-known scaling limit of flash memories. It is therefore necessary to either explore innovative technologies that can extend the areal density of flash memories beyond the scaling limits, or to vigorously develop alternative non-volatile solid-state memories including ferroelectric random-access memory, magnetoresistive random-access memory, phase-change random-access memory, and resistive random-access memory. In this paper, we review the physical principles of flash memories and their technical challenges that affect our ability to enhance the storage capacity. We then present a detailed discussion of novel technologies that can extend the storage density of flash memories beyond the commonly accepted limits. In each case, we subsequently discuss the physical principles of these new types of non-volatile solid-state memories as well as their respective merits and weakness when utilized for data storage applications. Finally, we predict the future prospects for the aforementioned solid-state memories for the next generation of data-storage devices based on a comparison of their performance.

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“…[16][17][18][19] Der wesentliche Unterschied zwischen diesen beiden Formaten liegt in der Datenadressierung. Damit der Brenner beim Schreiben auf der noch leeren Pre-Groove erkennt, wo sich der Laser befindet, und die Drehgeschwindigkeit steuern kann, haben die von Philips und Sony entwickelten DVD + RW eine wellenförmige Struktur in den Wänden der Pre-Groove mit einer Frequenzmodulation von 817.4 kHz (ähnlich wie bei der CD-RW).…”

Section: Wiederbeschreibbare Dvdunclassified

Aktuelle Entwicklungen in der optischen Datenspeicherung mit organischen Farbstoffen

Mustroph

Stollenwerk

Bressau³

2006

Angewandte Chemie

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Die wesentlichen Motivationen für die Entwicklung digitaler Datenspeicher sind die Verbesserung der Wiedergabequalität und die Erhöhung der Speicherkapazität. Im Jahre 1982 stellten Philips und Sony mit der Compact Disc (CD) und einem entsprechenden Abspielgerät das erste technisch und wirtschaftlich erfolgreiche System dieser Art vor. Heute steht eine Vielfalt an optischen Datenträgerformaten zur Verfügung. Dabei wird zwischen vorbespielten, einmal beschreibbaren und wiederbeschreibbaren Medien unterschieden. Der Aufsatz gibt zunächst eine Übersicht über diese Systeme und die Grundzüge ihrer Herstellung und konzentriert sich dann auf die Eigenschaften der organischen Farbstoffe, die in einmal beschreibbaren Systemen verwendet werden. Die Farbstoffchemie wird im Allgemeinen zu den reifen Arbeitsgebieten gezählt. – Ist dies ein begründeter Abgesang oder nur ein Vorurteil? Anhand von Anwendungen in der optischen Datenspeicherung wird illustriert, dass Fortschritte bei CD‐R und DVD/R auch heute ohne funktionelle Farbstoffe undenkbar wären.

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4.7 GB Phase-Change Optical Disk for an Authoring System of Digital Versatile Disc

Cited by 5 publications

References 0 publications

Current Developments in Optical Data Storage with Organic Dyes

Current Developments in Optical Data Storage with Organic Dyes

Physical principles and current status of emerging non-volatile solid state memories

Aktuelle Entwicklungen in der optischen Datenspeicherung mit organischen Farbstoffen

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