49 relations: Amorphous solid, Blu-ray, Blu-ray Disc recordable, Book type, Camcorder, CD-R, Constant angular velocity, Constant linear velocity, Crystal, Data retention, DVD, DVD Forum, DVD player, DVD recordable, DVD recorder, DVD+R DL, DVD+RW Alliance, DVD+VR, DVD-R DL, DVD-RAM, DVD-VR, DVD6C, DVD±R, European Union, FAQ, Format war, GeSbTe, Gibibyte, Gigabyte, HD DVD, Home video, JVC, Laser, MiniDVD, MultiLevel Recording, Numerical aperture, Optical disc, Optical disc recording technologies, Optical Storage Technology Association, Phase (matter), Phase-change material, Philips, Pioneer Corporation, Poly(methyl methacrylate), Random access, Sony, SuperDrive, United States, Wobble frequency.
In condensed matter physics and materials science, an amorphous (from the Greek a, without, morphé, shape, form) or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.
Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format.
Blu-ray Disc Recordable (or BD-R) refers to two direct to disc optical disc recording technologies that can be recorded on to an optical disc with an optical disc recorder.
The book type is a field of four bits at the start of every DVD (in the physical format information section of the control data block) that indicates what the physical format of the disc is.
A camcorder is an electronic device originally combining a video camera and a videocassette recorder.
CD-R (Compact Disc-Recordable) is a digital optical disc storage format.
In optical storage, constant angular velocity (CAV) is a qualifier for the rated speed of any disc containing information, and may also be applied to the writing speed of recordable discs.
In optical storage, constant linear velocity (CLV) is a qualifier for the rated speed of an optical disc drive, and may also be applied to the writing speed of recordable discs.
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
Data retention defines the policies of persistent data and records management for meeting legal and business data archival requirements; although sometimes interchangeable, not to be confused with the Data Protection Act 1998.
DVD (an abbreviation of "digital video disc" or "digital versatile disc") is a digital optical disc storage format invented and developed by Philips and Sony in 1995.
The DVD Forum is an international organization composed of hardware, software, media and production companies that use and develop the DVD and formerly HD DVD formats.
A DVD player is a device that plays DVD discs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards.
DVD recordable and DVD rewritable refer to part of optical disc recording technologies.
A DVD recorder is an optical disc recorder that uses optical disc recording technologies to digitally record analog or digital signals onto blank writable DVD media.
DVD+R DL (DL stands for Double Layer) also called DVD+R9, is a derivative of the DVD+R format created by the DVD+RW Alliance.
The DVD+RW Alliance is a group of electronic hardware, optical storage and software manufacturers who in 1997 created and promoted a format standard of recordable and rewritable DVDs, known as the "plus" format.
The DVD+VR standard defines a logical format for DVD-Video compliant recording on optical discs.
DVD-R DL (DL stands for Dual Layer), also called DVD-R9, is a derivative of the DVD-R format standard. DVD-R DL discs hold 8.5 GB by utilizing two recordable dye layers, each capable of storing a little less than the 4.7 gigabyte (GB) of a single layer disc, almost doubling the total disc capacity. Discs can be read in many DVD devices (older units are less compatible) and can only be written using DVD-R DL compatible recorders. It is part of optical disc recording technologies for digital recording to optical disc. DVD-R DL has compatibility issues with legacy DVD-ROM drives known as pickup head overrun. To avoid this issue, the two layers of the disc need to be equally recorded. But this is a contradiction with the sequential nature of the DVD recording. Thus DVD Forum under Pioneer's lead developed a technology known as Layer Jump Recording (LJR), which incrementally record smaller sections of each layer to maintain compatibility with DVD-ROM drives. DVD-R DL media has been discontinued by most manufacturers. DVD+R DL is dominating the market for dual layered media.
DVD-RAM (DVD Random Access Memory) is a disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers.
The DVD-VR standard defines a logical format for video recording on DVD-R, DVD-RW, and DVD-RAM style media, including the dual layer versions of these media.
The DVD6C Licensing Agency or DVD6C Licensing Group.
DVD±R (also DVD+/-R, or "DVD plus/dash R") is not a separate DVD format, but rather is a shorthand term for a DVD drive that can accept both of the common recordable DVD formats (i.e. DVD-R and DVD+R).
The European Union (EU) is a political and economic union of EUnum member states that are located primarily in Europe.
Frequently asked questions (FAQ) or Questions and Answers (Q&A), are listed questions and answers, all supposed to be commonly asked in some context, and pertaining to a particular topic.
A format war describes competition between mutually incompatible proprietary formats that compete for the same market, typically for data storage devices and recording formats for electronic media.
GeSbTe (germanium-antimony-tellurium or GST) is a phase-change material from the group of chalcogenide glasses used in rewritable optical discs and phase-change memory applications.
The gibibyte is a multiple of the unit byte for digital information.
The gigabyte is a multiple of the unit byte for digital information.
HD DVD (short for High Definition Digital Versatile Disc) is a discontinued high-density optical disc format for storing data and playback of high-definition video.
Home video is pre-recorded video media that is either sold, rented or streamed for home entertainment.
,, usually referred to as JVC or The Japan Victor Company, is a Japanese international professional and consumer electronics corporation based in Yokohama.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
MiniDVD (also Mini DVD or miniDVD) is a DVD disc which is in diameter.
MultiLevel Recording (ML) (also known as M-ary) was a technology originally developed by Optex Corporation and promoted by Calimetrics to increase the storage capacity of optical discs.
In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes the range of angles over which the system can accept or emit light.
In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc which encodes binary data (bits) in the form of pits (binary value of 0 or off, due to lack of reflection when read) and lands (binary value of 1 or on, due to a reflection when read) on a special material (often aluminium) on one of its flat surfaces.
Optical disc authoring requires a number of different optical disc recorder technologies working in tandem, from the optical disc media to the firmware to the control electronics of the optical disc drive.
The Optical Storage Technology Association (OSTA) is an international trade association which promotes the use of recordable optical technologies and products, and most notably it is responsible for the creation and maintenance of the UDF specification.
In the physical sciences, a phase is a region of space (a thermodynamic system), throughout which all physical properties of a material are essentially uniform.
A phase change material (PCM) is a substance with a high heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy.
Koninklijke Philips N.V. (Philips, stylized as PHILIPS) is a Dutch multinational technology company headquartered in Amsterdam currently focused in the area of healthcare.
commonly referred to as Pioneer, is a Japanese multinational corporation based in Tokyo, Japan that specializes in digital entertainment products.
Poly(methyl methacrylate) (PMMA), also known as acrylic or acrylic glass as well as by the trade names Crylux, Plexiglas, Acrylite, Lucite, and Perspex among several others (see below), is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.
In computer science, random access (more precisely and more generally called direct access) is the ability to access any item of data from a population of addressable elements roughly as easily and efficiently as any other, no matter how many elements may be in the set.
is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.
SuperDrive is a trademark used by Apple Inc. for two different storage drives: from 1988 to 1999 to refer to a high-density floppy disk drive capable of reading all major 3.5″ disk formats; and from 2001 onwards to refer to a CD/DVD reader/writer.
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
Optical discs with the exception of the DVD-RAM have their data encoded on a single spiral, or a groove, which covers the surface of the disc.
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