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Laservision
LaserDisc (LD) is a home video format and the first commercial optical disc storage medium. It was developed by Philips, Pioneer, and the movie studio MCA. The format was initially marketed in the United States in 1978 under the name DiscoVision, a brand used by MCA. As Pioneer took a greater role in its development and promotion, the format was rebranded LaserVision. While the LaserDisc brand originally referred specifically to Pioneer's line of players, the term gradually came to be used generically to refer to the format as a whole, making it a genericized trademark. The discs typically have a diameter of , similar in size to the phonograph record. Unlike most later optical disc formats, LaserDisc is not fully digital; it stores an analog video signal. Many titles featured CD-quality digital audio, and LaserDisc was the first home video format to support surround sound. Its 425 to 440 horizontal lines of resolution was nearly double that of consumer competing consume ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Videodisc
Videodisc (or video disc) is a general term for a laser- or stylus-readable random-access disc that contains both audio and analog video signals recorded in an analog form. Typically, it is a reference to any such media that predates the mainstream popularity of the DVD format. The first mainstream official Videodisc was the Television Electronic Disc (TED) Videodisc, and the newest is the 4K Ultra HD Blu-Ray Disc. As of September 2023, the active video disc formats are Blu-ray Disc, DVD, and in other regions because of the price difference from DVD, Video CD (VCD) and SVCD. History Georges Demeny on March 3, 1892 patented a "phonoscope", designed in 1891, that can project chronophotographic pictures on a glass disc. Eadweard Muybridge used his zoopraxiscope to project chronophotographic pictures on a glass disc in 1893. E & H T Anthony, a camera maker based in New York, marketed in 1898 a combination motion picture camera and projector called "The Spiral" that could ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Disc
An optical disc is a flat, usuallyNon-circular optical discs exist for fashion purposes; see shaped compact disc. disc-shaped object that stores information in the form of physical variations on its surface that can be read with the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines through the disc to be detected on the other side. Optical discs can store analog information (e.g. LaserDisc), digital information (e.g. DVD), or store on the same disc (e.g. CD Video). Their main uses are the distribution of media and data, and long-term archival. Design and technology The encoding material sits atop a thicker substrate (usually polycarbonate) that makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genericized Trademark
A generic trademark, also known as a genericized trademark or proprietary eponym, is a trademark or brand name that, because of its popularity or significance, has become the generic term for, or synonymous with, a general class of products or services, usually against the intentions of the trademark's owner. A trademark is prone to genericization, or "genericide", when a brand name acquires substantial market dominance or mind share, becoming so widely used for similar products or services that it is no longer associated with the trademark owner, e.g., linoleum, bubble wrap, thermos, and aspirin. A trademark thus popularized is at risk of being challenged or revoked, unless the trademark owner works sufficiently to correct and prevent such broad use. Trademark owners can inadvertently contribute to genericization by failing to provide an alternative generic name for their product or service or using the trademark in similar fashion to generic terms. In one example, the Oti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaws (film)
''Jaws'' is a 1975 American thriller film directed by Steven Spielberg. Based on Jaws (novel), the 1974 novel by Peter Benchley, it stars Roy Scheider as police chief Martin Brody, who, with the help of a marine biologist (Richard Dreyfuss) and a professional shark hunter (Robert Shaw (actor), Robert Shaw), hunts a man-eating great white shark that attacks beachgoers at a summer resort town. Murray Hamilton plays the mayor, and Lorraine Gary portrays Brody's wife. The screenplay is credited to Benchley, who wrote the first drafts, and actor-writer Carl Gottlieb, who rewrote the script during principal photography. Shot mostly on location at Martha's Vineyard in Massachusetts from May to October 1974, ''Jaws'' was the first major motion picture to be shot on the ocean and consequently had a troubled production, going over budget and schedule. As the art department's mechanical sharks often malfunctioned, Spielberg decided to mostly suggest the shark's presence, employing an omi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlanta
Atlanta ( ) is the List of capitals in the United States, capital and List of municipalities in Georgia (U.S. state), most populous city in the U.S. state of Georgia (U.S. state), Georgia. It is the county seat, seat of Fulton County, Georgia, Fulton County and extends into neighboring DeKalb County, Georgia, DeKalb County. With a population of 520,070 (2024 estimate) living within the city limits, Atlanta is the eighth most populous city in the Southeastern United States, Southeast and List of United States cities by population, 36th most populous city in the United States according to the 2020 United States census, 2020 U.S. census. Atlanta is classified as a Globalization and World Cities Research Network#Beta +, Beta + global city and is the principal city of the much larger Atlanta metropolitan area, the core of which includes Cobb County, Georgia, Cobb, Clayton County, Georgia, Clayton and Gwinnett County, Georgia, Gwinnett counties, in addition to Fulton and DeKalb. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Test Market
A test market, in the field of business and marketing, is a geographic region or demographic group used to gauge the viability of a product or service in the mass market prior to a wide scale rollout. The criteria used to judge the acceptability of a test market region or group include: #a population that is demographically similar to the proposed target market; and #relative isolation from densely populated media markets so that advertising to the test audience can be efficient and economical. Practical use The test market ideally aims to duplicate "everything" - promotion and distribution as well as "product" - on a smaller scale. The technique replicates, typically in one area, what is planned to occur in a national launch; and the results are very carefully monitored, so that they can be extrapolated to projected national results. The area may be any one of the following: *Television area *Internet online test *Test town *Residential neighborhood *Test site A number of dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Russell (inventor)
James Torrance Russell (born 23 February 1931) is an American physicist and the inventor of compact disc technology. He earned a BA in physics from Reed College in Portland in 1953. He joined General Electric's nearby labs in Richland, Washington, where he devised experimental instrumentation. He designed and built the first electron beam welder. In 1965, Russell joined the Pacific Northwest National Laboratory of Battelle Memorial Institute in Richland. There, in 1965, Russell invented optical digital recording and playback. He built prototypes, with the first was operating in 1973. During 1973, 1974, and 1975 his invention was viewed by about 100 companies, including Philips and Sony, and more than 1500 descriptive brochures were distributed. The concept was described by many technical and media magazines beginning in 1972.. In 2000, Russell received The Vollum Award from Reed College. As of 2004, Russell was consulting from an in-home lab in Bellevue, Washington ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Paul Gregg
David Paul Gregg (March 11, 1923 – November 8, 2001) was an American engineer. He was the inventor of the optical disc (disk). Gregg was inspired to create the optical disc in 1958 while working at California electronics company Westrex, a part of Western Electric. His for a "Videodisk" was filed in March 1962 while working at 3M's Mincom division to advance electron beam recording and reproducing, but not granted until October, 1967. Gregg worked at Mincom with experienced television videotape engineers Wayne Johnson and Dean De Moss. The three men subsequently filed patents to cover a disc-recording system, a way to duplicate discs, and reproducing TV signals from photographic discs. When Mincom contracted Stanford's SRI to further the research, Gregg left and formed his own company, Gauss Electrophysics. In 1968, the Gregg and Gauss patents were purchased by MCA (Music Corporation of America), which helped develop the technology. His designs and patents paved the way ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Recording
The history of optical recording can be divided into a few number of distinct major contributions. The pioneers of optical recording worked mostly independently, and their solutions to the many technical challenges have very distinctive features, such as *reflective disc (Compaan and Kramer) *transparent disc (Gregg) *floppy disc (Russell) *rigid disc (Compaan and Kramer) *focused laser beam for read-out through transparent substrate (Compaan and Kramer). Gregg 1958 Laserdisc technology, using a transparent disc, was invented by David Paul Gregg in 1958 (and patented in 1970 and 1990). By 1969 Philips had developed a videodisc in reflective mode, which has great advantages over the transparent mode. MCA and Philips decided to join their efforts. They first publicly demonstrated the videodisc in 1972. Laserdisc was first available on the market, in Atlanta, on December 15, 1978, two years after the VHS VCR and four years before the CD, which is based on Laserdisc technology. Phi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Videophile
A videophile is one who is concerned with achieving high-quality results in the recording and playback of movies, TV programs, and other means of visual media. Criteria Similar to audiophile values, videophile values may be applied at all stages of the chain: the initial audio-visual recording, the video production process, and the playback (usually in a home setting). Some of the aspects of video that most videophiles are concerned with include frame rate, color system, Image resolution, resolution, compression artifacts, motion artifacts, video noise, screen size, poor upscaling, etc. Origin The term "videophile" was popularized by Tallahassee, Florida-based attorney and writer Jim Lowe, editor and publisher of ''The Videophile, The Videophile's Newsletter'', the first issue of which appeared in the summer of 1976. This was the first publication to unite fans of the Sony Betamax home video recorder (and later VHS, introduced in 1977). The newsletter later became ''The Videophile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betamax
Betamax (also known as Beta, and stylized as the Greek letter Beta, β in its logo) is a discontinued consumer analog Videotape, video cassette recording format developed by Sony. It was one of the main competitors in the videotape format war against its primary rival, VHS. Betamax was introduced in Japan on May 10, 1975, and launched in the United States later that year. Betamax was widely regarded, in part due to Sony's marketing, as offering superior picture quality compared to VHS. Its initial β1 speed provided 250 horizontal lines of resolution, compared to VHS's 240 lines, but early Beta tapes were limited to 60 minutes of recording time, making them impractical for recording movies or sporting events. To address this, Sony introduced the β2 speed, which doubled recording time to two hours but reduced resolution, negating its technical advantage. VHS's commercial success over Betamax was also driven by JVC's strategy of licensing the format broadly, spurring competition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surround Sound
Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener ( surround channels). Its first application was in movie theaters. Prior to surround sound, theater sound systems commonly had three ''screen channels'' of sound that played from three loudspeakers (left, center, and right) located in front of the audience. Surround sound adds one or more channels from loudspeakers to the side or behind the listener that are able to create the sensation of sound coming from any horizontal direction (at ground level) around the listener. The technique enhances the perception of sound spatialization by exploiting sound localization: a listener's ability to identify the location or origin of a detected sound in direction and distance. This is achieved by using multiple discrete audio channels routed to an array of loudspeakers. Surround sound typically has a listener location ( sweet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
