Advanced optical disk

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Topic: Advanced optical disk

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	Optical Disc Recording & Data Throughput
		A slow-down in the transfer of data from the processor caused by high network traffic or the small interruption of a hard disk re-calibration can interrupt the recording process if the buffer is not large enough to "wait out" the interruption.
		In cases where the speed of the input source is not fast enough to support "on-the-fly" duplication, an intermediate disc image file can be written to a hard disk.
		For a writing drive to successfully create a disc, it must receive an uninterrupted flow of data that must be transferred at a speed equal to or greater than the recording speed of the writing drive.
	www.padus.com /support/manuals/450/html/08_Advanced_Concepts/06_Optical_Disc_Recording_and_Data_Throughput.htm (421 words)

	Open Tech Support Community - Technologies Battle for Standard
		PCWorld has written an article on two technologies fighting over an upcoming DVD standard: Blu-Ray and newly introduced Advanced Optical Disk.
		Toshiba and NEC have proposed their Advanced Optical Disc technology as a standard to the DVD Forum, a consortium of 212 companies.
		Two competing technologies which enable more than 20GB of data to be stored on each side of an optical disk are nearing commercialization, leading to fears that the industry could be split between support for one format or the other.
	www.opentechsupport.net /forums/showthread.php?t=11696 (321 words)

	optical disk market > Report Says Optical Disks Market Experiencing Major Change > April 29, 2004
		The optical disk market is going through a period of change marked on the one hand by a standardization and commoditization of older CD and DVD models and on the other hand by a lack of standards for advanced blue-ray optical disks, says a market research report.
		Research and Markets said that feature differentiation has been important for the optical disk market and is driven by a combination of video editing and DVD recording applications, which are particularly important in the current improvement cycle.
		"Both cutting edge type and commodity type optical disk devices products are making waves in today's market," the firm stated.
	www.techweb.com /wire/story/TWB20040429S0001 (357 words)

	Holographic Versatile Disc - Wikipedia, the free encyclopedia
		Holographic Versatile Disc (HVD) is an advanced optical disc technology still in the research stage which would greatly increase storage over Blu-ray and HD-DVD optical disc systems.
		Servo information is used to monitor the position of the read head over the disc, similar to the head, track, and sector information on a conventional hard disk drive.
		The blue-green laser reads data encoded as laser interference fringes from a holographic layer near the top of the disc while the red laser is used to read servo information from a regular CD-style aluminium layer near the bottom.
	en.wikipedia.org /wiki/Holographic_Versatile_Disc (456 words)

	Disk
		A variety of optical storage media, such as the compact disc, DVD, and laserdisc, are used for digital data or video.
		Whatever their heritage, in computer jargon today it is common for the k-spelling to refer mainly to magnetic storage devices, while the c-spelling is customary for optical media such as the compact disc and similar technologies.
		Early BBC technicians differentiated between disks (in-house transcription records) and discs (the colloquial term for commercial gramophone records, or what the BBC dubbed CGRs).
	www.brainyencyclopedia.com /encyclopedia/d/di/disk.html (425 words)

	ELCOMSOFT: Advanced Disk Catalog
		Advanced Disk Catalog (ADC) is an award-winning easy-to-use 32-bit cataloguing program for Windows 9x/ME/NT/2K/XP and 2003.
		Read what our customers are saying about the Advanced Disk Catalog.
		Its Explorer-like interface allows for convenient cataloguing of data on various media types, e.g., hard disk drives (even via networks), floppy diskettes, optical disc, ZIP and JAZ disks, and so forth.
	www.elcomsoft.com /adc.html (548 words)

	Learn more about DVD in the online encyclopedia.
		On November 19, 2003 the DVD-Forum decided with eight to six votes that the Advanced Optical Disk is the HDTV successor of the DVD.
		There are two successors being developed by two different consortiums: The Blue ray disk and the Advanced Optical Disk.
		By this stage the term Digital Versatile Disk was used by some companies to reflect the fact that non-video formats of the disk would also be used.
	www.onlineencyclopedia.org /d/dv/dvd.html (1879 words)

	Company News On Call
		Now that Ricoh has become one of ECD's phase-change optical memory licensees, we have licensed nearly all major manufacturers of rewritable CD media and rewritable DVD media." ECD is a leader in the synthesis of new materials and the development of advanced production technology and innovative products.
		Stanford R. Ovshinsky, president and chief executive officer of ECD, said, "We are pleased to have completed this important agreement with Ricoh, whose efforts have been significant to the commercialization of the rewritable compact disk.
		In addition to CD-RW media, this royalty-bearing license covers all past and future phase-change optical memory products produced by Ricoh, which is the largest of the 13 companies to license this technology from ECD.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=105&STORY=/www/story/03-25-1999/0000896212 (298 words)

	ATAPI - Advanced Technology Attachment Packet Interface
		(Advanced Technology Attachment Packet Interface): An interface used to connect CD-ROMs, tape drives, and optical disks with the computer.
		An acronym for "Advanced Technology Attachment Packet Interface." A high-speed interface protocol that is considered a subset of the SCSI standard.
		It builds on the ATA (AT Attachment) interface, the official ANSI Standard name for the IDE interface developed for hard disk drives.
	www.auditmypc.com /acronym/ATAPI.asp (746 words)

	aod
		The Advanced Optical Disk (AOD) is similar to the blue ray disk: a CD size (5.25" or 120mm) optical data storage media, that uses a blue laser at 405 nm wavelength.
		To compensate the lack of storage space (15GB instead of Blue ray disks 25GB) is to be compensated with a better codec, here Windows Media 9 or H.264.
		The AOD is promoted by Toshiba and NEC and is a direct competitor of the blue ray disk.
	www.yourencyclopedia.net /AOD.html (227 words)

	EETimes.com - Toshiba makes a 36-Gbyte blue laser rewritable disk
		TOKYO — Toshiba Corp. will be presenting a paper at the Optical Data Storage meeting, held May 10-14 in Vancouver, Canada on its development of a dual layer 36-Gbyte rewritable disk for the Advanced Optical Disk (AOD) system.
		The AOD disk is a phase-change disk whose recording layers are made of a germanium-tellurium-rich germanium-antimony-tellurium-bismuth alloy.
		The competitive Blue-ray Disk format uses a lens with a numerical aperture of 0.85 and a disk with a 0.1-mm cover layer, which makes the format incompatible with the DVD format.
	www.eetimes.com /story/OEG20030509S0045 (422 words)

	Imperial College London
		However, our current optical and electronic means are advanced enough to be able to compromise on this point and encode a single pit by more than a bit information.
		This corresponds to a storage density increase of 3.6 times which was achieved partly by decreasing the wavelength of the laser used to illuminate the disk and partly by increasing the numerical aperture of the lens employed.
		“Optical data storage” is a general term covering all data storage techniques that use optical means to read, write and/or erase data.
	www.imperial.ac.uk /research/photonics/pt_group/peter_torok_research_topics_ODS.htm (415 words)

	Computergram International: Ibm Enhances Ramac, Ssa Disk Arrays
		The new SSA arrays include a new advanced SSA optical extended, similar to ESCON, that increases the distance the arrays can be away from the Unix and NT servers to which they are attached to 10 kilometers from 2.4 kilometers.
		The 7133-D40 and T40 arrays offer from 18 to 291 gigabytes of capacity in a single array; up to 1.75 terabytes can be packed into a single rack with the 18.2 gigabyte disks.
		It's the fall, so it must mean it is time for IBM's bi-annual update of its disk subsystems.
	www.findarticles.com /p/articles/mi_m0CGN/is_3531/ai_53177185 (790 words)

	Disk Arrays Gain in Use for Secondary Storage - Computerworld
		Neema cited another potential roadblock to wider adoption of secondary disk storage: A "significant percentage" of the respondents indicated that reliability issues could prevent them from using low-cost Advanced Technology Attachment (ATA) disk drives.
		Relatively inexpensive secondary disk storage is gaining a significant foothold in corporate data centers, according to a survey of more than 1,000 IT managers that's due to be released next month.
		Over the past 12 months, vendors such as EMC Corp., Network Appliance Inc. and Storage Technology Corp. have released ATA-based disk arrays for storage of near-line data, snapshot copies and information that will eventually be archived on tape devices.
	www.computerworld.com /printthis/2003/0,4814,80718,00.html (551 words)

	Financials.com - Annual Reports, Stock Quotes and more
		AUSTIN, Texas--When looking for high-speed interfaces for optical and hard disk drive (HDD) applications aimed at reducing size, increasing transmission speed, improving data reliability and ease of use, electronics engineers now have available a second generation of advanced technology attachment connectors.
		The 3M brand Serial Advanced Technology Attachment (SATA) Connector family provides smaller, faster and more reliable solutions for storage interface than parallel ATA connectors.
		Serving customers in more than 200 countries around the world, the company's 67,000 people use their expertise, technologies and global strength to lead in major markets including consumer and office; display and graphics; electronics and telecommunications; safety, security and protection services; health care; industrial and transportation.
	www.financials.com /c/info/story.cfm?storynum=1606056 (998 words)

	Fujitsu begins sampling 2.3GB magneto-optical disk drive - Computerworld
		The new GigaMO drive is backward-compatible with previous generations of magneto-optical disks from the 128MB version onward and has a maximum data transfer speed of 8.3MB/sec.
		The current highest-capacity magneto-optical disks and drives support storage of up to 1.3GB of data per disk.
		The new 2.3GB format, nicknamed GigaMO, was jointly developed by Fujitsu and Sony Corp. to extend the life of the magneto-optical format, which has been coming under increasing pressure from newer rewritable optical disk formats such as DVD-R and DVD-RW, which have capacities of between 2.6GB and 9.6GB per disk.
	www.computerworld.com /printthis/2001/0,4814,62068,00.html (271 words)

	Business Wire: Samsung Introduces SpinPoint V40 Series 40GB/Pl... @ HighBeam Research
		Headquartered in San Jose, Calif., Samsung Information Systems America, Inc. (SISA) is a U.S. subsidiary of Samsung Electronics Co., Ltd. SISA develops and markets hard disk drives, optical disk drives, digital TV, and system imaging devices.
		Featuring 40GB per platter technology, 2.9 bel acoustic noise, 8.9ms average seek time, 2MB buffer DRAM, and Ultra ATA-100 interface, this new addition to Samsung's 5400 RPM SpinPoint family is a leading edge hard disk drive solution for the desktop PC and consumer electronics market.
		Incorporating an advanced mechanical platform designed to minimize the intensity of external shock transmitted to the most critical components, the V40 Series improves on its already competitive shock protection capability to industry leading 350G.
	highbeam.com /library/doc0.asp?docid=1G1:77860975&... (538 words)

	Articles - Blu-ray Disc
		By decreasing the wavelength, using a higher numerical aperture (0.85, compared with 0.6 for DVD, and 0.65 for HD DVD), higher quality, dual-lens system, and making the cover layer thinner to avoid unwanted optical effects, the laser beam can be focused much more tightly at the disk surface.
		Blu-ray systems use a blue-violet laser operating at a wavelength of 405 nm, similar to the one used for HD DVD, to read and write data.
		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.
	www.kingj.com /articles/Blu-Ray (2533 words)

	Next-Gen DVD Split By Two Competing Standards > Next-Gen DVD Split By Two Competing Standards > November 14, 2003
		The optical-pickup technology includes a high numerical aperture, 0.85, and a 405-nanometer blue-violet laser using a 0.1-mm cover-layer disk, compared with 0.6 mm in current DVD disks.
		AOD's disk capacity is 15 Gbytes for a single-layer ROM disk, 30 Gbytes for a dual-layer disk and 20 Gbytes for a single-layer rewritable disk.
		He called HD-DVD's 15-Gbyte ROM capacity "quite enough," given the recent advent of advanced codecs like H.264 or Windows Media9.
	www.techweb.com /wire/story/TWB20031114S0001 (2533 words)

	Used, Refurbished, and pre-owned CT Scanners.
		ZAP 70, 1,200,500 Slices on the Gantry, 6,500 Slices on the Dunlee CTR1790RGQ 5.0MHU RhinoTube, CRX 200 Generator, 4.6B1 Software, Autovoice, Q-Pro II, ADS Advanced Dynamic Scanning, MPR-Multiplanar Reconstruction, Hyperlan II, 2.0 Pitch, Optical Disk
		ZAP 180, Upgraded f/PQ 2000 in 2000, 15,000 Slices on a Dunlee Rhino 5.0MHU Tube, Voxel Q Workstation, CRX 400 Generator, 4.6B2 Software, DICOM, Autovoice, ADS-Advanced Dynamic Scanning, 8mm DAT Tape, 2,500,000 Slices on Gantry
		ZAP 180, 810,000 Rotations on the Gantry, 65,000 Slices on the Dunlee 5.0MHU Rhino Tube, Falcon Processor, CRX 400 Generator, Voxel Q Workstation, 4.6B2 Software, Instaview, MPR Multi-Planar Reconstruction, Hyperlan II, MSSI, 3.0 Pitch, Ultra Image, Injector, DICOM, Autovoice, Q-Pro, Q-Pro II, ADS-Advanced Dynamic Scanning
	www.atlantisworldwide.com /12_Catalog/06_CTScanners.shtml (2533 words)

	plugin.txt
		ADC stands for 'Advanced Disk Catalog' Advanced Disk Catalog (ADC) is an easy to use tool with explorer-like interface which allows you to catalog the drives: floppy disks, hard drives (including network ones), optical disks, CD-ROMs, ZIP disks and other media.
		FAR stands for 'File and Archive manager' FAR developed to facilitate a large number of operations with files, folders and archives under Windows 95/98 and Windows NT operating systems.
		Note, that FAR is actually a text mode shell.
	www.elcomsoft.com /ADC/plugin.txt (439 words)

	C.C.S., Inc.: Networking solutions, data storage products, computer hardware, and work stations
		Our services include repair of non-working disk and tape drives, advanced exchanges, emergency shipments, sales and sourcing of hard to find disk, tape and optical drives.
		We stock the largest selection of after-market and hard to find computer disk drives in the country.
		Our extensive inventory consists of quality products from all the major storage manufactures in all interfaces for your notebook, laptop, desktop, network computers and including your high-end data storage systems.
	www.ccsdrives.com (439 words)

	Electronic Storage Media
		Information on Storage Media Longevities: Disposition Charts (life Expectancy of Various Information Storage Media (magnetic tape, optical disk, paper, microfilm) for storage at various Temperature and RH levels)
		The National Media Lab (NML), is "an industry resource supporting the U.S. Government in the evaluation, development, and deployment of advanced storage media and systems.
		Long-Term Usability of Optical Media The National Archives and Records Administration and the Long-Term Usability of Optical Media for Federal Records: Three Critical Problem Areas
	palimpsest.stanford.edu /bytopic/electronic-records/electronic-storage-media (439 words)

	Holographic Versatile Disc - Wikipedia, the free encyclopedia
		Holographic Versatile Disc (HVD) is an advanced optical disc technology still in the research stage which would greatly increase storage over Blu-ray and HD DVD optical disc systems.
		HVD is not the only technology in next-generation, high-capacity optical storage media.
		Servo information is used to monitor the position of the read head over the disc, similar to the head, track, and sector information on a conventional hard disk drive.
	en.wikipedia.org /wiki/Holographic_Versatile_Disc (913 words)

	Partner Spotlight, Sony Electronics, Inc.
		Sony Electronic’s (Sony) advanced tape-, optical- and disk-based products have set industry standards and are frequently adopted by leading OEM providers.
		Reliable Sony Advanced Intelligent Tape (AIT) solutions are capable of scaling from the desktop to remote offices to enterprise departments.
		CA and Sony are also cooperating on a number of other initiatives, including integration of some of their respective enterprise storage hardware and software products.
	www3.ca.com /partners/spotlight.aspx?cid=30579 (235 words)

	PowerBook G4 - Wikipedia, the free encyclopedia
		PowerBooks were designed to utilize the SMS feature to prevent damage to the hard disk caused by strong vibrations or sudden motion.
		The PowerBook G4 Titanium also featured a front-mounted slot-loading optical drive into which optical discs (initially DVDs or CDs) could be inserted.
		However, as processor technology advanced, it became obvious that the aging G4 processor could not live up to the computational demands of the present; the PowerPC G5, which had succeeded the G4 in desktop computers, however, proved to be too power-hungry and heat-intensive to use in laptops.
	en.wikipedia.org /wiki/PowerBook_G4 (1423 words)

	Magneto-Optical Storage
		Unlike traditional magnetic recording systems, which use currents induced in the magnetic heads by the changing magnetic fluxes on the disk surface to read the data, MO systems use polarized light to read the data from the disk.
		The direction of magnetization in the thin magnetic films (on magnetic rigid disks, for example) can be parallel to the surface (longitudinal recording) or perpendicular to the surface (perpendicular recording).
		On the other hand, some of the principles of the MO technology (thermally-assisted magnetic recording) may find their way into the most advanced magnetic storage devices of the future.
	www.usbyte.com /common/MOsystems.htm (908 words)

	The Scientist - John Bahcall Receives Award From NASA For His Work On Hubble Space Telescope
		Bahcall was also given the medal for his vocal support of the $1.5 billion telescope project, in spite of its much-publicized optical flaws, and for his leadership in the development of astronomical science.
		Bahcall is best known for his calculations of the flux of neutrinos expected to be emitted from the sun and his models of the distribution of the stars through the disk, halo, and central bulge of the Milky Way.
		Bahcall received his Ph.D. in physics from Harvard University in 1961 and was a faculty member at the California Institute of Technology before joining the Institute for Advanced Study in 1962.
	www.the-scientist.com /yr1992/may/people2_920525.html (908 words)

	ERROR CONTROL CODING CLASS
		Famous examples are the deep-space probes, the compact optical disk, and the voiceband data modems, none of which would be possible without error control coding.
		This is an advanced level Error Control Coding Course, and while it is certainly possible for the talented student to take this course without prior experience in Error Control Coding, basically you should be familiar with these concepts, in particular with the Viterbi algorithm.
		In the past 50 years, error control coding has advanced from basic beginnings to a mature discipline with applications that cover virtually all digital data transmission applications.
	www.ee.ualberta.ca /~schlegel/Classes/ECCclass.html (212 words)

	PowerBook G4 - Wikipedia, the free encyclopedia
		PowerBooks were designed to utilize the SMS feature to prevent damage to the hard disk caused by strong vibrations or sudden motion.
		The PowerBook G4 Titanium also featured a front-mounted slot-loading optical drive into which optical discs (initially DVDs or CDs) could be inserted.
		However, as processor technology advanced, it became obvious that the aging G4 processor could not live up to the computational demands of the present; the PowerPC G5, which had succeeded the G4 in desktop computers, however, proved to be too power-hungry and heat-intensive to use in laptops.
	en.wikipedia.org /wiki/PowerBook_G4 (1393 words)

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Topic: Advanced optical disk

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In the News (Thu 17 Dec 09)