A newspaper is a periodical publication containing written information about current events and is typed in black ink with a white or gray background. Newspapers can cover a wide variety of fields such as politics, business and art, include materials such as opinion columns, weather forecasts, reviews of local services, birth notices, editorial cartoons, comic strips, advice columns. Most newspapers are businesses, they pay their expenses with a mixture of subscription revenue, newsstand sales, advertising revenue; the journalism organizations that publish newspapers are themselves metonymically called newspapers. Newspapers have traditionally been published in print. However, today most newspapers are published on websites as online newspapers, some have abandoned their print versions entirely. Newspapers developed as information sheets for businessmen. By the early 19th century, many cities in Europe, as well as North and South America, published newspapers; some newspapers with high editorial independence, high journalism quality, large circulation are viewed as newspapers of record.
Newspapers are published daily or weekly. News magazines are weekly, but they have a magazine format. General-interest newspapers publish news articles and feature articles on national and international news as well as local news; the news includes political events and personalities and finance, crime and natural disasters. The paper is divided into sections for each of those major groupings. Most traditional papers feature an editorial page containing editorials written by an editor and expressing an opinion on a public issue, opinion articles called "op-eds" written by guest writers, columns that express the personal opinions of columnists offering analysis and synthesis that attempts to translate the raw data of the news into information telling the reader "what it all means" and persuading them to concur. Papers include articles which have no byline. A wide variety of material has been published in newspapers. Besides the aforementioned news and opinions, they include weather forecasts; as of 2017, newspapers may provide information about new movies and TV shows available on streaming video services like Netflix.
Newspapers have classified ad sections where people and businesses can buy small advertisements to sell goods or services. Most newspapers are businesses, they pay their expenses with a mixture of subscription revenue, newsstand sales, advertising revenue; some newspapers are at least government-funded. The editorial independence of a newspaper is thus always subject to the interests of someone, whether owners, advertisers, or a government; some newspapers with high editorial independence, high journalism quality, large circulation are viewed as newspapers of record. Many newspapers, besides employing journalists on their own payrolls subscribe to news agencies, which employ journalists to find and report the news sell the content to the various newspapers; this is a way to avoid duplicating the expense of reporting from around the world. Circa 2005, there were 6,580 daily newspaper titles in the world selling 395 million print copies a day; the late 2000s–early 2010s global recession, combined with the rapid growth of free web-based alternatives, has helped cause a decline in advertising and circulation, as many papers had to retrench operations to stanch the losses.
Worldwide annual revenue approached $100 billion in 2005-7 plunged during the worldwide financial crisis of 2008-9. Revenue in 2016 fell to only $53 billion, hurting every major publisher as their efforts to gain online income fell far short of the goal; the decline in advertising revenues affected both the print and online media as well as all other mediums. Besides remodeling advertising, the internet has challenged the business models of the print-only era by crowdsourcing both publishing in general and, more journalism. In addition, the rise of news aggregators, which bundle linked articles fro
Denmark the Kingdom of Denmark, is a Nordic country and the southernmost of the Scandinavian nations. Denmark lies southwest of Sweden and south of Norway, is bordered to the south by Germany; the Kingdom of Denmark comprises two autonomous constituent countries in the North Atlantic Ocean: the Faroe Islands and Greenland. Denmark proper consists of a peninsula, an archipelago of 443 named islands, with the largest being Zealand and the North Jutlandic Island; the islands are characterised by flat, arable land and sandy coasts, low elevation and a temperate climate. Denmark has a total area of 42,924 km2, land area of 42,394 km2, the total area including Greenland and the Faroe Islands is 2,210,579 km2, a population of 5.8 million. The unified kingdom of Denmark emerged in the 10th century as a proficient seafaring nation in the struggle for control of the Baltic Sea. Denmark and Norway were ruled together under one sovereign ruler in the Kalmar Union, established in 1397 and ending with Swedish secession in 1523.
The areas of Denmark and Norway remained under the same monarch until Denmark -- Norway. Beginning in the 17th century, there were several devastating wars with the Swedish Empire, ending with large cessions of territory to Sweden. After the Napoleonic Wars, Norway was ceded to Sweden, while Denmark kept the Faroe Islands and Iceland. In the 19th century there was a surge of nationalist movements, which were defeated in the 1864 Second Schleswig War. Denmark remained neutral during World War I. In April 1940, a German invasion saw brief military skirmishes while the Danish resistance movement was active from 1943 until the German surrender in May 1945. An industrialised exporter of agricultural produce in the second half of the 19th century, Denmark introduced social and labour-market reforms in the early 20th century that created the basis for the present welfare state model with a developed mixed economy; the Constitution of Denmark was signed on 5 June 1849, ending the absolute monarchy, which had begun in 1660.
It establishes a constitutional monarchy organised as a parliamentary democracy. The government and national parliament are seated in Copenhagen, the nation's capital, largest city, main commercial centre. Denmark exercises hegemonic influence in the Danish Realm, devolving powers to handle internal affairs. Home rule was established in the Faroe Islands in 1948. Denmark negotiated certain opt-outs, it is among the founding members of NATO, the Nordic Council, the OECD, OSCE, the United Nations. Denmark is considered to be one of the most economically and developed countries in the world. Danes enjoy a high standard of living and the country ranks in some metrics of national performance, including education, health care, protection of civil liberties, democratic governance and human development; the country ranks as having the world's highest social mobility, a high level of income equality, is among the countries with the lowest perceived levels of corruption in the world, the eleventh-most developed in the world, has one of the world's highest per capita incomes, one of the world's highest personal income tax rates.
The etymology of the word Denmark, the relationship between Danes and Denmark and the unifying of Denmark as one kingdom, is a subject which attracts debate. This is centered on the prefix "Dan" and whether it refers to the Dani or a historical person Dan and the exact meaning of the -"mark" ending. Most handbooks derive the first part of the word, the name of the people, from a word meaning "flat land", related to German Tenne "threshing floor", English den "cave"; the -mark is believed to mean woodland or borderland, with probable references to the border forests in south Schleswig. The first recorded use of the word Danmark within Denmark itself is found on the two Jelling stones, which are runestones believed to have been erected by Gorm the Old and Harald Bluetooth; the larger stone of the two is popularly cited as Denmark's "baptismal certificate", though both use the word "Denmark", in the form of accusative ᛏᛅᚾᛘᛅᚢᚱᚴ tanmaurk on the large stone, genitive ᛏᛅᚾᛘᛅᚱᚴᛅᚱ "tanmarkar" on the small stone.
The inhabitants of Denmark are there called "Danes", in the accusative. The earliest archaeological findings in Denmark date back to the Eem interglacial period from 130,000–110,000 BC. Denmark has been inhabited since around 12,500 BC and agriculture has been evident since 3900 BC; the Nordic Bronze Age in Denmark was marked by burial mounds, which left an abundance of findings including lurs and the Sun Chariot. During the Pre-Roman Iron Age, native groups began migrating south, the first tribal Danes came to the country between the Pre-Roman and the Germanic Iron Age, in the Roman Iron Age; the Roman provinces maintained trade routes and relations with native tribes in Denmark, Roman coins have been found in Denmark. Evidence of strong Celtic cultural influence dates from this period in Denmark and much of North-West Europe and is among other things reflected in the finding of the Gundestrup cauldron; the tribal Danes came from the east Danish islands and Scania and spoke an early form of North Germanic.
Historians believe that before their arrival, most of Jutland and the nearest islands were settled by tribal J
An academic or scholarly journal is a periodical publication in which scholarship relating to a particular academic discipline is published. Academic journals serve as permanent and transparent forums for the presentation and discussion of research, they are peer-reviewed or refereed. Content takes the form of articles presenting original research, review articles, book reviews; the purpose of an academic journal, according to Henry Oldenburg, is to give researchers a venue to "impart their knowledge to one another, contribute what they can to the Grand design of improving natural knowledge, perfecting all Philosophical Arts, Sciences."The term academic journal applies to scholarly publications in all fields. Scientific journals and journals of the quantitative social sciences vary in form and function from journals of the humanities and qualitative social sciences; the first academic journal was Journal des sçavans, followed soon after by Philosophical Transactions of the Royal Society, Mémoires de l'Académie des Sciences.
The first peer-reviewed journal was Medical Essays and Observations. The idea of a published journal with the purpose of " people know what is happening in the Republic of Letters" was first conceived by Eudes de Mazerai in 1663. A publication titled Journal littéraire général was supposed to be published to fulfill that goal, but never was. Humanist scholar Denis de Sallo and printer Jean Cusson took Mazerai's idea, obtained a royal privilege from King Louis XIV on 8 August 1664 to establish the Journal des sçavans; the journal's first issue was published on 5 January 1665. It was aimed at people of letters, had four main objectives: review newly published major European books, publish the obituaries of famous people, report on discoveries in arts and science, report on the proceedings and censures of both secular and ecclesiastical courts, as well as those of Universities both in France and outside. Soon after, the Royal Society established Philosophical Transactions of the Royal Society in March 1665, the Académie des Sciences established the Mémoires de l'Académie des Sciences in 1666, which more focused on scientific communications.
By the end of the 18th century, nearly 500 such periodical had been published, the vast majority coming from Germany and England. Several of those publications however, in particular the German journals, tended to be short lived. A. J. Meadows has estimated the proliferation of journal to reach 10,000 journals in 1950, 71,000 in 1987. However, Michael Mabe warns that the estimates will vary depending on the definition of what counts as a scholarly publication, but that the growth rate has been "remarkably consistent over time", with an average rates of 3.46% per year from 1800 to 2003. In 1733, Medical Essays and Observations was established by the Medical Society of Edinburgh as the first peer-reviewed journal. Peer review was introduced as an attempt to increase the pertinence of submissions. Other important events in the history of academic journals include the establishment of Nature and Science, the establishment of Postmodern Culture in 1990 as the first online-only journal, the foundation of arXiv in 1991 for the dissemination of preprints to be discussed prior to publication in a journal, the establishment of PLOS One in 2006 as the first megajournal.
There are two kinds of article or paper submissions in academia: solicited, where an individual has been invited to submit work either through direct contact or through a general submissions call, unsolicited, where an individual submits a work for potential publication without directly being asked to do so. Upon receipt of a submitted article, editors at the journal determine whether to reject the submission outright or begin the process of peer review. In the latter case, the submission becomes subject to review by outside scholars of the editor's choosing who remain anonymous; the number of these peer reviewers varies according to each journal's editorial practice – no fewer than two, though sometimes three or more, experts in the subject matter of the article produce reports upon the content and other factors, which inform the editors' publication decisions. Though these reports are confidential, some journals and publishers practice public peer review; the editors either choose to reject the article, ask for a revision and resubmission, or accept the article for publication.
Accepted articles are subjected to further editing by journal editorial staff before they appear in print. The peer review can take from several weeks to several months. Review articles called "reviews of progress," are checks on the research published in journals; some journals are devoted to review articles, some contain a few in each issue, others do not publish review articles. Such reviews cover the research from the preceding year, some for longer or shorter terms; some journals are enumerative. Yet others are evaluative; some journals are published in series, each covering a complete subject field year, or covering specific fields through several years. Unlike original research article
As a physical object, a book is a stack of rectangular pages oriented with one edge tied, sewn, or otherwise fixed together and bound to the flexible spine of a protective cover of heavier inflexible material. The technical term for this physical arrangement is codex. In the history of hand-held physical supports for extended written compositions or records, the codex replaces its immediate predecessor, the scroll. A single sheet in a codex is a leaf, each side of a leaf is a page; as an intellectual object, a book is prototypically a composition of such great length that it takes a considerable investment of time to compose and a still considerable, though not so extensive, investment of time to read. This sense of book has an unrestricted sense. In the restricted sense, a book is a self-sufficient section or part of a longer composition, a usage that reflects the fact that, in antiquity, long works had to be written on several scrolls, each scroll had to be identified by the book it contained.
So, for instance, each part of Aristotle's Physics is called a book, as of course the Bible encompasses many different books. In the unrestricted sense, a book is the compositional whole of which such sections, whether called books or chapters or parts, are parts; the intellectual content in a physical book need not be a composition, nor be called a book. Books can consist only of drawings, engravings, or photographs, or such things as crossword puzzles or cut-out dolls. In a physical book the pages can be left blank or can feature an abstract set of lines as support for on-going entries, i.e. an account book, an appointment book, a log book, an autograph book, a notebook, a diary or day book, or a sketch book. Some physical books are made with pages thick and sturdy enough to support other physical objects, like a scrapbook or photograph album. Books may be distributed in electronic form as other formats. Although in ordinary academic parlance a monograph is understood to be a specialist academic work, rather than a reference work on a single scholarly subject, in library and information science monograph denotes more broadly any non-serial publication complete in one volume or a finite number of volumes, in contrast to serial publications like a magazine, journal, or newspaper.
An avid reader or collector of books or a book lover is a bibliophile or colloquially, "bookworm". A shop where books are bought and sold is a bookstore. Books are sold elsewhere. Books can be borrowed from libraries. Google has estimated that as of 2010 130,000,000 distinct titles had been published. In some wealthier nations, the sale of printed books has decreased because of the use of e-books, though sales of e-books declined in the first half of 2015; the word book comes from Old English "bōc", which in turn comes from the Germanic root "*bōk-", cognate to "beech". In Slavic languages "буква" is cognate with "beech". In Russian and in Serbian and Macedonian, the word "букварь" or "буквар" refers to a primary school textbook that helps young children master the techniques of reading and writing, it is thus conjectured. The Latin word codex, meaning a book in the modern sense meant "block of wood"; when writing systems were created in ancient civilizations, a variety of objects, such as stone, tree bark, metal sheets, bones, were used for writing.
A tablet is a physically robust writing medium, suitable for casual transport and writing. Clay tablets were flattened and dry pieces of clay that could be carried, impressed with a stylus, they were used as a writing medium for writing in cuneiform, throughout the Bronze Age and well into the Iron Age. Wax tablets were pieces of wood covered in a thick enough coating of wax to record the impressions of a stylus, they were the normal writing material in schools, in accounting, for taking notes. They had the advantage of being reusable: the wax could be melted, reformed into a blank; the custom of binding several wax tablets together is a possible precursor of modern bound books. The etymology of the word codex suggests that it may have developed from wooden wax tablets. Scrolls can be made from papyrus, a thick paper-like material made by weaving the stems of the papyrus plant pounding the woven sheet with a hammer-like tool until it is flattened. Papyrus was used for writing in Ancient Egypt as early as the First Dynasty, although the first evidence is from the account books of King Nefertiti Kakai of the Fifth Dynasty.
Papyrus sheets were glued together to form a scroll. Tree bark such as lime and other materials were used. According to Herodotus, the Phoenicians brought writing and papyrus to Greece around the 10th or 9th century BC; the Greek word for papyrus as writing material and book come from the Phoenician port town Byblos, through which papyrus was exported to Greece. From Greek we derive the word tome, which meant a slice or piece and from there began to denote "a roll of papyrus". Tomus was used by the Latins with the same meaning as volumen. Whether made from papyrus, parchment, or paper, scrolls were the dominant form of book in the Hellenistic, Chinese and Macedonian culture
The LP is an analog sound storage medium, a vinyl record format characterized by a speed of 33 1⁄3 rpm, a 12- or 10-inch diameter, use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few minor refinements and the important addition of stereophonic sound, it has remained the standard format for vinyl albums. At the time the LP was introduced, nearly all phonograph records for home use were made of an abrasive shellac compound, employed a much larger groove, played at 78 revolutions per minute, limiting the playing time of a 12-inch diameter record to less than five minutes per side; the new product was a 12- or 10-inch fine-grooved disc made of PVC and played with a smaller-tipped "microgroove" stylus at a speed of 33 1⁄3 rpm. Each side of a 12-inch LP could play for about 22 minutes. Only the microgroove standard was new, as both vinyl and the 33 1⁄3 rpm speed had been used for special purposes for many years, as well as in one unsuccessful earlier attempt to introduce a long-playing record for home use by RCA Victor.
Although the LP was suited to classical music because of its extended continuous playing time, it allowed a collection of ten or more pop music recordings to be put on a single disc. Such collections, as well as longer classical music broken up into several parts, had been sold as sets of 78 rpm records in a specially imprinted "record album" consisting of individual record sleeves bound together in book form; the use of the word "album" persisted for the one-disc LP equivalent. The prototype of the LP was the soundtrack disc used by the Vitaphone motion picture sound system, developed by Western Electric and introduced in 1926. For soundtrack purposes, the less than five minutes of playing time of each side of a conventional 12-inch 78 rpm disc was not acceptable; the sound had to play continuously for at least 11 minutes, long enough to accompany a full 1,000-foot reel of 35 mm film projected at 24 frames per second. The disc diameter was increased to 16 inches and the speed was reduced to 33 1⁄3 revolutions per minute.
Unlike their smaller LP descendants, they were made with the same large "standard groove" used by 78s. Unlike conventional records, the groove started at the inside of the recorded area near the label and proceeded outward toward the edge. Like 78s, early soundtrack discs were pressed in an abrasive shellac compound and played with a single-use steel needle held in a massive electromagnetic pickup with a tracking force of five ounces. By mid-1931, all motion picture studios were recording on optical soundtracks, but sets of soundtrack discs, mastered by dubbing from the optical tracks and scaled down to 12 inches to cut costs, were made as late as 1936 for distribution to theaters still equipped with disc-only sound projectors. Syndicated radio programming was distributed on 78 rpm discs beginning in 1928; the desirability of longer continuous playing time soon led to the adoption of the Vitaphone soundtrack disc format. 16-inch 33 1⁄3 rpm discs playing about 15 minutes per side were used for most of these "electrical transcriptions" beginning about 1930.
Transcriptions were variously recorded inside out with an outside start. Longer programs, which required several disc sides, pioneered the system of recording odd-numbered sides inside-out and even-numbered sides outside-in so that the sound quality would match from the end of one side to the start of the next. Although a pair of turntables was used, to avoid any pauses for disc-flipping, the sides had to be pressed in a hybrid of manual and automatic sequencing, arranged in such a manner that no disc being played had to be turned over to play the next side in the sequence. Instead of a three-disc set having the 1–2, 3–4 and 5–6 manual sequence, or the 1–6, 2–5 and 3–4 automatic sequence for use with a drop-type mechanical record changer, broadcast sequence would couple the sides as 1–4, 2–5 and 3–6; some transcriptions were recorded with a vertically modulated "dale" groove. This was found to allow deeper bass and an extension of the high-end frequency response. Neither of these was a great advantage in practice because of the limitations of AM broadcasting.
Today we can enjoy the benefits of those higher-fidelity recordings if the original radio audiences could not. Transcription discs were pressed only in shellac, but by 1932 pressings in RCA Victor's vinyl-based "Victrolac" were appearing. Other plastics were sometimes used. By the late 1930s, vinyl was standard for nearly all kinds of pressed discs except ordinary commercial 78s, which continued to be made of shellac. Beginning in the mid-1930s, one-off 16-inch 33 1⁄3 rpm lacquer discs were used by radio networks to archive recordings of their live broadcasts, by local stations to delay the broadcast of network programming or to prerecord their own productions. In the late 1940s, magnetic tape recorders were adopted by the networks to pre-record shows or repeat them for airing in different time zones, but 16-inch vinyl pressings continued to be used into the early 1960s for non-network distribution of prerecorded programming. Use of the LP's microgroove standard began in the late 1950s, in the 1960s the discs were reduced to 12 inches, becoming physically indistinguishable from ordinary LPs.
Unless the quantity required was small, pressed discs were a more economica
The Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. It is a network of networks that consists of private, academic and government networks of local to global scope, linked by a broad array of electronic and optical networking technologies; the Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web, electronic mail and file sharing. Some publications no longer capitalize "internet"; the origins of the Internet date back to research commissioned by the federal government of the United States in the 1960s to build robust, fault-tolerant communication with computer networks. The primary precursor network, the ARPANET served as a backbone for interconnection of regional academic and military networks in the 1980s; the funding of the National Science Foundation Network as a new backbone in the 1980s, as well as private funding for other commercial extensions, led to worldwide participation in the development of new networking technologies, the merger of many networks.
The linking of commercial networks and enterprises by the early 1990s marked the beginning of the transition to the modern Internet, generated a sustained exponential growth as generations of institutional and mobile computers were connected to the network. Although the Internet was used by academia since the 1980s, commercialization incorporated its services and technologies into every aspect of modern life. Most traditional communication media, including telephony, television, paper mail and newspapers are reshaped, redefined, or bypassed by the Internet, giving birth to new services such as email, Internet telephony, Internet television, online music, digital newspapers, video streaming websites. Newspaper and other print publishing are adapting to website technology, or are reshaped into blogging, web feeds and online news aggregators; the Internet has enabled and accelerated new forms of personal interactions through instant messaging, Internet forums, social networking. Online shopping has grown exponentially both for major retailers and small businesses and entrepreneurs, as it enables firms to extend their "brick and mortar" presence to serve a larger market or sell goods and services online.
Business-to-business and financial services on the Internet affect supply chains across entire industries. The Internet has no single centralized governance in either technological implementation or policies for access and usage; the overreaching definitions of the two principal name spaces in the Internet, the Internet Protocol address space and the Domain Name System, are directed by a maintainer organization, the Internet Corporation for Assigned Names and Numbers. The technical underpinning and standardization of the core protocols is an activity of the Internet Engineering Task Force, a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise. In November 2006, the Internet was included on USA Today's list of New Seven Wonders; when the term Internet is used to refer to the specific global system of interconnected Internet Protocol networks, the word is a proper noun that should be written with an initial capital letter.
In common use and the media, it is erroneously not capitalized, viz. the internet. Some guides specify that the word should be capitalized when used as a noun, but not capitalized when used as an adjective; the Internet is often referred to as the Net, as a short form of network. As early as 1849, the word internetted was used uncapitalized as an adjective, meaning interconnected or interwoven; the designers of early computer networks used internet both as a noun and as a verb in shorthand form of internetwork or internetworking, meaning interconnecting computer networks. The terms Internet and World Wide Web are used interchangeably in everyday speech. However, the World Wide Web or the Web is only one of a large number of Internet services; the Web is a collection of interconnected documents and other web resources, linked by hyperlinks and URLs. As another point of comparison, Hypertext Transfer Protocol, or HTTP, is the language used on the Web for information transfer, yet it is just one of many languages or protocols that can be used for communication on the Internet.
The term Interweb is a portmanteau of Internet and World Wide Web used sarcastically to parody a technically unsavvy user. Research into packet switching, one of the fundamental Internet technologies, started in the early 1960s in the work of Paul Baran and Donald Davies. Packet-switched networks such as the NPL network, ARPANET, the Merit Network, CYCLADES, Telenet were developed in the late 1960s and early 1970s; the ARPANET project led to the development of protocols for internetworking, by which multiple separate networks could be joined into a network of networks. ARPANET development began with two network nodes which were interconnected between the Network Measurement Center at the University of California, Los Angeles Henry Samueli School of Engineering and Applied Science directed by Leonard Kleinrock, the NLS system at SRI International by Douglas Engelbart in Menlo Park, California, on 29 October 1969; the third site was the Culler-Fried Interactive Mathematics Center at the University of California, Santa Barbara, followed by the University of
DVD is a digital optical disc storage format invented and developed in 1995. The medium can store any kind of digital data and is used for software and other computer files as well as video programs watched using DVD players. DVDs offer higher storage capacity than compact discs. Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD; such discs are a form of DVD-ROM because data can only be not written or erased. Blank recordable DVD discs can be recorded once using a DVD recorder and function as a DVD-ROM. Rewritable DVDs can be erased many times. DVDs are used in DVD-Video consumer digital video format and in DVD-Audio consumer digital audio format as well as for authoring DVD discs written in a special AVCHD format to hold high definition material. DVDs containing other types of information may be referred to as DVD data discs; the Oxford English Dictionary comments that, "In 1995 rival manufacturers of the product named digital video disc agreed that, in order to emphasize the flexibility of the format for multimedia applications, the preferred abbreviation DVD would be understood to denote digital versatile disc."
The OED states that in 1995, "The companies said the official name of the format will be DVD. Toshiba had been using the name ‘digital video disc’, but, switched to ‘digital versatile disc’ after computer companies complained that it left out their applications.""Digital versatile disc" is the explanation provided in a DVD Forum Primer from 2000 and in the DVD Forum's mission statement. There were several formats developed for recording video on optical discs before the DVD. Optical recording technology was invented by David Paul Gregg and James Russell in 1958 and first patented in 1961. A consumer optical disc data format known as LaserDisc was developed in the United States, first came to market in Atlanta, Georgia in 1978, it used much larger discs than the formats. Due to the high cost of players and discs, consumer adoption of LaserDisc was low in both North America and Europe, was not used anywhere outside Japan and the more affluent areas of Southeast Asia, such as Hong-Kong, Singapore and Taiwan.
CD Video released in 1987 used analog video encoding on optical discs matching the established standard 120 mm size of audio CDs. Video CD became one of the first formats for distributing digitally encoded films in this format, in 1993. In the same year, two new optical disc storage formats were being developed. One was the Multimedia Compact Disc, backed by Philips and Sony, the other was the Super Density disc, supported by Toshiba, Time Warner, Matsushita Electric, Mitsubishi Electric, Thomson, JVC. By the time of the press launches for both formats in January 1995, the MMCD nomenclature had been dropped, Philips and Sony were referring to their format as Digital Video Disc. Representatives from the SD camp asked IBM for advice on the file system to use for their disc, sought support for their format for storing computer data. Alan E. Bell, a researcher from IBM's Almaden Research Center, got that request, learned of the MMCD development project. Wary of being caught in a repeat of the costly videotape format war between VHS and Betamax in the 1980s, he convened a group of computer industry experts, including representatives from Apple, Sun Microsystems and many others.
This group was referred to as the Technical Working Group, or TWG. On August 14, 1995, an ad hoc group formed from five computer companies issued a press release stating that they would only accept a single format; the TWG voted to boycott both formats unless the two camps agreed on a converged standard. They recruited president of IBM, to pressure the executives of the warring factions. In one significant compromise, the MMCD and SD groups agreed to adopt proposal SD 9, which specified that both layers of the dual-layered disc be read from the same side—instead of proposal SD 10, which would have created a two-sided disc that users would have to turn over; as a result, the DVD specification provided a storage capacity of 4.7 GB for a single-layered, single-sided disc and 8.5 GB for a dual-layered, single-sided disc. The DVD specification ended up similar to Toshiba and Matsushita's Super Density Disc, except for the dual-layer option and EFMPlus modulation designed by Kees Schouhamer Immink.
Philips and Sony decided that it was in their best interests to end the format war, agreed to unify with companies backing the Super Density Disc to release a single format, with technologies from both. After other compromises between MMCD and SD, the computer companies through TWG won the day, a single format was agreed upon; the TWG collaborated with the Optical Storage Technology Association on the use of their implementation of the ISO-13346 file system for use on the new DVDs. Movie and home entertainment distributors adopted the DVD format to replace the ubiquitous VHS tape as the primary consumer digital video distribution format, they embraced DVD as it produced higher quality video and sound, provided superior data lifespan, could be interactive. Interactivity on LaserDiscs had proven desirable to consumers collectors; when LaserDisc prices dropped from $100 per