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Topic: Digital Multilayer Disk

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Fluorescent Multilayer Disc

Versatile Multilayer Disc

Holographic Versatile Disc

Enhanced Versatile Disc

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	Digital Data Storage
		Digital signals can be transmitted, stored, and manipulated in a far more precise manner than the older analog technology.
		For electro-optical disks, this is the development of materials that have high sensitivity to short-wavelength illumination and advanced multilayered materials that increase storage density per drive.
		For example, one new method of recovering data from a disk is called partial-response maximum-likelihood (PRML), a sampling scheme that permits disk manufacturers to dynamically calculate the probability of a given bit of data being a 'one' or a 'zero' from a sampled electrical signal from the disk head.
	www.atp.nist.gov /press/97-04dds.htm (4257 words)

	Chp 3: Emerging Optical Storage Technologies
		These approaches include extending present disk system storage technologies to (1) a 3-D layered format; (2) volume holographic encoding, where data is recorded in a distributed fashion in the volume; and (3) wavelength encoding persistent hole-burning, where wavelength or time can be used as the third dimension.
		Therefore, the volumetric density is governed by the effective volume of the spot, which in turn is limited by the volumetric resolution of the media, the numerical aperture of the optics, the wavelength, and the positional accuracy of the pickup head in the third dimension.
		Layered optical disk storage is presently being investigated (using different approaches and at different levels of development) by Toshiba, Matsushita, and Sony in Japan, and by IBM and Call/ Recall, Inc.
	www.wtec.org /loyola/opto/c3_s5.htm (2252 words)

	International Technical Working Groups - Optical Processing and Computing
		As shown by the recent digital versatile disk (DVD) standard, multilayer optical storage is a viable means of dramatically increasing the capacity growth rate for optical storage.
		Two-photon photochromic disk and cube media and parallel access reading and writing systems are being developed, with the goal of simultaneously providing more than 100 GB capacities and data-transfer rates exceeding 1 Gb/s.
		In addition to the extremely large effective areal densities achievable with this monolithic 3D disk approach, parallel-access of lines or planes of data is naturally accommodated in two-photon 3D memories (as shown in Figure 1) to provide increased data-transfer rates.
	www.spie.org /web/oer/june/jun98/opcwg.html (915 words)

	Digital Multilayer Disk - Wikipedia, the free encyclopedia
		Digital Multilayer Disk (DMD) is an optical disc format developed by D Data Inc. It is based on the Fluorescent Multilayer Disc, which was created by the now-defunct company Constellation 3D.
		It is based on the red-laser technology, so DMD discs and players can be easily made in the existing plants with little modifications.
		Digital Multilayer Disk players, that is, HDTV capacity players require the higher storage capacity of HD-DMD to store sufficient audio and video data to fully utilize the capabilities of HDTV receivers and projectors, enabling full length movies, at high definition, on a single disk.
	en.wikipedia.org /wiki/Digital_Multilayer_Disk (627 words)

	Ricoh 2006
		The new 6.16 Megapixel Ricoh RR660 digital camera is even lighter and more compact than its predecessor, and yet is equipped with a crystal-clear 2.4 inch colour TFT-LCD monitor for even easier viewing.
		Ricoh GR Digital Creative Set : Ricoh launches the "GR Digital Creative Set," including the award winning GR Digital combined with an exciting package of accessories (consisting of wide conversion lens GW-1, external viewfinder GV-1, hood and adapter GH-1, and camera case and neck strap) designed to maximise the camera's already superb performance.
		The new GR Digital inherits the superb image quality that made the award winning GR Series (first launched in 1996) of 35mm compact film cameras so popular, as well as the depictive performance to satisfy professional photographers, distilled into a compact 25-mm thin body.
	www.letsgodigital.org /en/2006/ricoh/review2.html (924 words)

	PRESS RELEASE New Venture D Data Launches in the U.S. With 15 GB Disk Containing Full-Length HD Movie (Site not responding. Last check: 2007-10-13)
		DMD players, with a projected street price of $299.99, are capable of playing DVDs (backward compatible), making D Data's arrival particularly timely in a consumer electronics market where the average DVD household currently owns 25 DVD movies.
		The DMD disc is striking in appearance due to the fact that it is virtually transparent.
		This is because the DMD is a substrate, or a blank disc, on which many layers of digital information have been "sandwiched" together, so each layer can be read and searched as if it were a single disc.
	www.marketwire.com /mw/release_html_b1?release_id=68312 (1313 words)

	DIGITAL VCR FORMATS
		For this article were talking about VCRs that start with analog or digital video and audio, and record the signal digitally (as streams of ones and zeros), and can play back the data, converting it into analog video and audio.
		The other digital formats in the table use some form of compression to reduce the data flow and tape consumption.
		Disks cost about 100 times as much as tape to store the same data, but accessing data on a disk is 100 times faster than winding a tape to find it.
	videoexpert.home.att.net /artic3/256dvcr.htm (2670 words)

	The Hindu : New technology to drive entertainment industry
		The DMD is the first three-dimentional disk available in the market and offers customers a superior removable storage solution.
		He said DMDs would change the face of cinema and digital data storage all over the world and Bollywood, being one of the largest producers of films, would greatly benefit from the new technology.
		He asserted that DMDs had inherent advantages over other disks in that DMDs had true 3 D storage and parallel reading and writing.
	www.hinduonnet.com /thehindu/2003/08/15/stories/2003081503231600.htm (345 words)

	Ultrahigh-Density Sensor
		They determine how much and how fast the disk drive can "read." Because computer users are constantly demanding higher density disk drives (with more memory in the same physical space), manufacturers must constantly push to make smaller and smaller magnetic sensors.
		They applied their expertise about thin, multilayer films, magnetics, and microfabrication technologies and emerged with a variation on the most promising GMR concept at the time, the "spin-valve" GMR sensor.
		In this configuration, current flowing through the multilayer planes encounters reduced electron scattering and as a result, resistivity is lower.
	www.llnl.gov /str/Hawryluk.html (1086 words)

	Optical disc Summary
		Digital data (the binary language of ones and zeroes common to all computers) are encoded onto a master disc.
		The next set of innovations in optical disk technology were introduced in the the mid-1990s, a new and improved CD-ROM was introduced called the Digital Versatile Disk, or DVD.
		Philips and Sony formed a consortium in 1979 to develop a digital audio disc, which resulted in the very successful introduction of the compact disc in 1983.
	www.bookrags.com /Optical_disc (1325 words)

	Shutterbug: A Personal Look At Digital Imaging
		Call it digital film or e-film or whatever, there are now five viable formats available, and at PMA there was news about many of them including other accessories that make creating digital images easier.
		Since digital images can be taller or wider than traditional silver prints, Ofoto members now have the option to print the entire full frame image on a standard sized sheet of photo paper instead of cropping it.
		Casio digital camera owners will be able to pull images directly from their Internet cameras onto the Zing.com web site, allowing users to spend more time creating and sharing albums, selecting pictures for prints, ordering personalized photo gifts, and printing directly from the Zing.com web site onto a home printer.
	www.shutterbug.com /show_reports/0500sb_apersonal (5594 words)

	blue ray disk -
		The minimum "spot size" on which a laser can be focused is limited by diffraction, and depends on the wavelength of the light and the numerical aperture of the lens used to focus it.
		For users recording digital television broadcasts, the BluRay's baseline datarate of 36Mbit will be more than adequate to record high definition broadcasts.
		Under the name "ROM-Mark," this technology will be built into all ROM-producing blue ray disk devices, and prevent content from being counterfeited in the event that a watermark is detected.
	www.infotechloco.com /Inf-Computer-Topics-A---B/Blue-ray-disk.html (1976 words)

	Get Digital: DVD Solutions \| DVD FAQ
		Digital devices that do nothing more than reproduce audio and video will be able to receive all data (as long as they can authenticate that they are playback-only devices).
		Digital recording devices are only able to receive data that is marked as copyable, and they must change the flag to "don't copy" or "no more copies" if the source is marked "copy once." DCPS in general is designed for the next generation of digital TVs, digital receivers, and digital video recorders.
		In 1998, the Digital Display Working Group (DDWG) was formed to create a universal interface standard between computers and displays to replace the analog VGA connection standard.
	www.get-digital.ca /about_dvd_faq1.html (16092 words)

	IBM's 'Pixie Dust' Breakthrough to Quadruple Disk Drive Density
		The company is first to mass-produce computer hard disk drives using a revolutionary new type of magnetic coating that is eventually expected to quadruple the data density of current hard disk drive products -- a level previously thought to be impossible, but crucial to continue feeding the information-hungry Internet economy.
		In the past decade, the data density for magnetic hard disk drives has increased at a phenomenal pace: doubling every 18 months and, since 1997, doubling every year, which is much faster than the vaunted Moore's Law for integrated circuits.
		The opposing magnetic orientations make the entire multilayer structure appear much thinner than it actually is. Thus small, high-density bits can be written easily on AFC media, but they will retain their magnetization due to the media's overall thickness.
	www.spacedaily.com /news/materials-01m.html (872 words)

	GMR: A Giant Leap for IBM Research
		But as Parkin's team made and tested some 30,000 different multilayer combinations of different elements and layer dimensions, they demonstrated the generality of GMR for all transition metal elements and invented the structures that still hold the world records for GMR at low temperature, room temperature and useful fields.
		When a weak magnetic field, such as that from a bit on a hard disk, passes beneath such a structure, the magnetic orientation of the unpinned magnetic layer rotates relative to that of the pinned layer, generating a significant change in electrical resistance due to the GMR effect.
		This transformation is no small task and the transition from the present world to the digital one is highly dependent on smart, inexpensive and abundant digital storage.
	www.research.ibm.com /research/gmr.html (1157 words)

	PCQuest : Complete Guide To DVDs : Beyond DVDs (Site not responding. Last check: 2007-10-13)
		This was also the time when technology in digital audio and video advanced rapidly, highlighting the need for high speed, high capacity media, leading to the proliferation of CDs and subsequently DVDs.
		The disk features a data transfer rate of 36 MBps and will be compatible with the prevailing optical disk technologies.
		It is a small form factor disk that weighs just 9 grams and is the size of a small coin.
	www.pcquest.com /content/dvd/103101101.asp (1008 words)

	FMD ROM
		In a way this might be a perfect example of the so called "Vaporware": hardware that is promised but never comes to the market.
		The company is determined to bring multilayer optical disc technology to the market, and so has introduced the technology again under the new name of Digital Multilayer Disk (DMD) (5).
		Research has shown that media containing up to a hundred layers are currently feasible, thereby increasing the potential capacity of a single card or disk to hundreds of Gigabytes.
	www.thocp.net /hardware/fmd_rom.htm (684 words)

	MobileWhack.com - News and Reviews on everything mobile : Cell Phones, PDAS, Mp3 Players, Digital Cameras, Camcorders, ...
		It was a matter of time before Sony jumped in to the DSLR bandwagon, though why it took so much of time is beyond me. The company finally came clean with its DSLR which has been in the pipeline for quite some time and from the looks of it is a potential.
		If you are bugged seeing the "out of memory" message in your digital cameras, then this one's probably the perfect one to go for, especially for high-end digital camera owners, who desire for 2,560 resolution JPEG images which consumes a lot of space on your conventional memory card.
		LetsGoDigital.org Review the Sony S90 Digital Camera and they write -"Sony decided at the beginning of this year that it was time to introduce a complete new line of digital cameras and thus Sony came out with the new S-series of digital cameras during the PMA (digital Imaging event in the U.S.A.) in February 2005.
	www.mobilewhack.com /reviews/digital_cameras/sony__ (4617 words)

	DIGITAL POETRY digital
		Each week students examine published examples of digital poetry in a variety of forms including but not limited to soundscapes, hypertext poetry, animation, code poems, interactive games, location-based poems using handheld devices, digital video and wikis.
		Taft High School and Media Worskkhop New York Digital Poetry Project 1999-2000 "Poetry is to prose as dancing is to walking." Paul Valery In September of 1999 a staff developer from Media Workshop New York and an instructor from Taft High School designed a student inquiry based project that grew out of student writing.
		This digital collection of a selected group of Dunbar's poetry is intended to encourage the use of and interest in the works of Dunbar.
	digilander.libero.it /a_digital/Digital_poetry.html (605 words)

	Digital Camera Software Downloads
		Modern scanners and digital cameras output images with more than 8 bit per channel color, and PictureMan 5.0 PRO is the only software which fully utilizes the extended color information provided by these imaging devices.
		It is a tool for owners of digital cameras, flatbed and slide scanners; and is for use by both professional photographers, and digital image processing enthusiasts.
		It can be used to overcome one of the last remaining limitations of digital cameras compared to their film counterparts: their inability to take very long exposures.
	www.steves-digicams.com /digsoftware_editors.html (4662 words)

	Constellation 3D Fluroscent Multilayer Disk Article
		The concept of Fluorescent Multilayer Disks and Cards (FMD/C) is a significant and unique breakthrough - the recording, reading and storing of information by using fluorescent materials embedded in pits and grooves, in each of the layers.
		Standard 120mm FMD ROM (Fluorescent Multilayer Disk, Read Only Memory): These high capacity disks with 140GB of data are needed to satisfy the requirements of the HDTV market.
		Access and retrieval of information will be unmatched as to speed, allowing the data retrieval of information will be unmatched as to speed, allowing the data retrieval rate to exceed 1 gigabyte per second.
	www.ocworkbench.com /articles/c3d.htm (511 words)

	CHAOTIC DIGITAL CDMA digital
		Dowling, "Embedding data in digital images using CDMA techniques", in Proceedings of the IEEE International Conference on Image Processing, Vancouver, Canada, September 2000, vol.
		Once in a digital format the information can be treated independently of its original transmission methodology (TDMA, CDMA, analog, etc.) using software driven digital signal processors.
		At step 604, Transmission Parameter Storage: The transmission parameters set the boundary conditions for the nonlinear CDMA systems and decouples the rest of the present invention from the transmission methodology and conduits.
	digilander.libero.it /a_digital/Chaotic_digital_CDMA.html (605 words)

	Home Video News - Digital Trends (Site not responding. Last check: 2007-10-13)
		Digital Chosunibo is reporting that Samsung is rapidly moving more production to China in an effort to increase margins.
		The versatile X3 projector can be used at work for presentations or at home for watching movies and playing video games.
		Sony's new DVDirect recorder lets you convert footage in real-time, from a digital camcorder to a DVD without using a computer.
	news.digitaltrends.com /channel7topid7377.html (366 words)

	Realty Times - Real Estate News and Advice
		Forget hitting the pause button on choosing from among the next generation of video disk recorders available in two competing formats.
		A multilayer dual optical disk would have three layers, one in today's DVD or CD (compact disc, a music and sound format), a second layer able to play one high-capacity format and a third layer for the other high-capacity format.
		New Medium says the problem with disc layering is "low yields" -- for every one that comes off the assembly line in pristine condition, another one is tossed into the recycling bin as defective.
	realtytimes.com /rtcpages/20060928_bluray.htm (544 words)

	NEWS! - Microdrive capacities to get a big boost!
		Whilst the full impact of AFC technology may still be a couple of years away, assuming the same immediate density increases that have been shown in IBM's TravelStar drives we can look forward to Microdrives in the region of 1.3GB in the not too distant future...
		The company is first to mass-produce computer hard disk drives using a revolutionary new type of magnetic coating that is expected to quadruple the data density of current hard disk drive products -- a level previously thought impossible, but crucial to continue expanding the information-hungry Internet economy.
		Known technically as "antiferromagnetically-coupled (AFC) media," the new multilayer coating is expected to permit hard-disk drives to store 100 billion bits (gigabits) of data per square inch of disk area by 2003.
	www.imaging-resource.com /NEWS/990464397.html (735 words)

	Varistor Technology & Products: Littelfuse Multilayer & Metal Oxide Varistors
		Littelfuse multilayer varistor products are designed to protect a broad range of low voltage (0-120VDC) applications in the computer, handheld device, industrial and automotive markets.
		Littelfuse multilayer varistor devices are designed to suppress a variety of transient events at the board level, including those specified in IEC 61000-4-2 or other standards used for Electromagnetic Compliance (EMC).
		With the exception of the MLN series, all of the multilayer varistor families are available in packages as small as 0402 size with a wide range of end-termination options including Nickel Barrier for improved solderability: Search Multilayer Varistor Products.
	www.littelfuse.com /varistor.html (754 words)

	Mounds of Sounds
		A sampler, on the other hand, is more than a digital-audio playback rig: It's a musical instrument that can morph digital audio into wild new textures and apply deep filtering and modulation (motion), as well as repitch, resize and reverse the original sample.
		Traditional samplers, namely hardware samplers, are capable of digital multilayer recording, as well as resampling (recording a processed sample to itself).
		A different but related tack is to build a multilayered patch, in which the same instrument is recorded at different dynamic levels, with different inflections for added realism.
	remixmag.com /mag/remix_mounds_sounds/index.html (2901 words)

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