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HD DVD-R
HD DVD (short for High Definition Digital Versatile Disc) is an obsolete high-density optical disc format for storing data and playback of high-definition video. Supported principally by Toshiba, HD DVD was envisioned to be the successor to the standard DVD format. HD DVD employed a blue laser with a shorter wavelength (with the exception of the 3× DVD and HD REC variants), and it stored about 3.2 times as much data per layer as its predecessor (maximum capacity: 15 GB per layer compared to 4.7 GB per layer on a DVD). The format was commercially released in 2006 and fought a protracted format war with rival Blu-ray. On February 19, 2008, Toshiba abandoned the format, announcing it would no longer manufacture HD DVD players and drives. The HD DVD Promotion Group was dissolved on March 28, 2008. The HD DVD physical disc specifications (but not the codecs) were used as the basis for the China Blue High-definition Disc (CBHD) formerly called CH-DVD. History In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Disc
In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc that encodes binary data (bits) in the form of pits and lands on a special material, often aluminum, on one of its flat surfaces. Its main uses are physical offline data distribution and long-term archival. Changes from pit to land or from land to pit correspond to a binary value of 1; while no change, regardless of whether in a land or a pit area, corresponds to a binary value of 0. Non-circular optical discs exist for fashion purposes; see shaped compact disc. 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. The data are stored on the disc with a laser or stamping machine, and can be accesse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Codec
A codec is a device or computer program that encodes or decodes a data stream or signal. ''Codec'' is a portmanteau of coder/decoder. In electronic communications, an endec is a device that acts as both an encoder and a decoder on a signal or data stream, and hence is a type of codec. ''Endec'' is a portmanteau of encoder/decoder. A coder or encoder encodes a data stream or a signal for transmission or storage, possibly in encrypted form, and the decoder function reverses the encoding for playback or editing. Codecs are used in videoconferencing, streaming media, and video editing applications. History In the mid-20th century, a codec was a device that coded analog signals into digital form using pulse-code modulation (PCM). Later, the name was also applied to software for converting between digital signal formats, including companding functions. Examples An audio codec converts analog audio signals into digital signals for transmission or encodes them for storage. A receiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Videotape Format War
Videotape is magnetic tape used for storing video and usually sound in addition. Information stored can be in the form of either an analog or digital signal. Videotape is used in both video tape recorders (VTRs) and, more commonly, videocassette recorders (VCRs) and camcorders. Videotapes have also been used for storing scientific or medical data, such as the data produced by an electrocardiogram. Because video signals have a very high bandwidth, and stationary heads would require extremely high tape speeds, in most cases, a helical-scan video head rotates against the moving tape to record the data in two dimensions. Tape is a linear method of storing information and thus imposes delays to access a portion of the tape that is not already against the heads. The early 2000s saw the introduction and rise to prominence of high-quality random-access video recording media such as hard disks and flash memory. Since then, videotape has been increasingly relegated to archival and simi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanyo
, stylized as SANYO, is a Japanese electronics company and formerly a member of the Fortune Global 500, ''Fortune'' Global 500 whose headquarters was located in Moriguchi, Osaka, Moriguchi, Osaka prefecture, Japan. Sanyo had over 230 subsidiaries and affiliates, and was founded by Toshio Iue in 1947. On December 21, 2009, Panasonic completed a 400 billion yen ($4.5 billion) acquisition of a 50.2% stake in Sanyo, making Sanyo a subsidiary of Panasonic. In April 2011, Sanyo became a wholly owned subsidiary of Panasonic, with its assets integrated into the latter's portfolio. History Beginnings Sanyo was founded when Toshio Iue the brother-in-law of Konosuke Matsushita and also a former Panasonic Corporation, Matsushita employee, was lent an unused Matsushita plant in 1947 and used it to make bicycle generator lamps. Sanyo was incorporated in 1949; in 1952 it made Japan's first plastic radio and in 1954 Japan's first pulsator-type washing machine. The company's name means ''thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Film Studio
A film studio (also known as movie studio or simply studio) is a major entertainment company or motion picture company that has its own privately owned studio facility or facilities that are used to make films, which is handled by the production company. Most firms in the entertainment industry have never owned their own studios, but have rented space from other companies. There are also independently owned studio facilities, who have never produced a motion picture of their own because they are not entertainment companies or motion picture companies; they are companies who sell only studio space. Beginnings In 1893, Thomas Edison built the first movie studio in the United States when he constructed the Black Maria, a tarpaper-covered structure near his laboratories in West Orange, New Jersey, and asked circus, vaudeville, and dramatic actors to perform for the camera. He distributed these movies at vaudeville theaters, penny arcades, wax museums, and fairgrounds. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warner Bros
Warner Bros. Entertainment Inc. (commonly known as Warner Bros. or abbreviated as WB) is an American film and entertainment studio headquartered at the Warner Bros. Studios complex in Burbank, California, and a subsidiary of Warner Bros. Discovery. Founded in 1923 by four brothers, Harry, Albert, Sam, and Jack Warner, the company established itself as a leader in the American film industry before diversifying into animation, television, and video games and is one of the "Big Five" major American film studios, as well as a member of the Motion Picture Association (MPA). The company is known for its film studio division the Warner Bros. Pictures Group, which includes Warner Bros. Pictures, New Line Cinema, the Warner Animation Group, Castle Rock Entertainment, and DC Studios. Among its other assets, stands the television production company Warner Bros. Television Studios. Bugs Bunny, a cartoon character created by Tex Avery, Ben Hardaway, Chuck Jones, Bob Givens and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caddy (hardware)
In computer hardware, a caddy is a container used to hold some medium, such as a CD-ROM. If the medium is a hard disk drive, the caddy is also referred to as a disk enclosure. Its functionality is similar to that of the 3.5" floppy disk's jacket. The purpose of a disk caddy is to protect the disk from damage when handling; its use dates back to at least the Capacitance Electronic Disc in 1976, and they were used in initial versions of Blu-ray Discs, though as a cost-saving measure newer versions use hard-coating technology to prevent scratches and do not need a caddy. Caddies may be an integral part of the medium, as in some DVD-RAM discs, or separately attached. Examples Caddies date at least to the Capacitance Electronic Disc, which used a caddy from 1976 to protect the grooves of the disc. While caddies have become obsolete, some websites still sell them, although they have become quite expensive. Cartridges In addition to caddies that serve purely a storage purpos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blu-ray Disc Association
The Blu-ray Disc Association (BDA) is the industry consortium that develops and licenses Blu-ray Disc technology and is responsible for establishing format standards and promoting business opportunities for Blu-ray Disc. The BDA is divided into three levels of membership: the board of directors, contributors, and general members. The "Blu-ray Disc founder group" was started on 20 May 2002 by nine electronic companies: Panasonic, Pioneer, Philips, Thomson, LG Electronics, Hitachi, Sharp, Samsung Electronics and Sony. In order to enable more companies to participate, it announced in May 2004 that it would form the Blu-ray Disc Association, which was inaugurated on 4 October 2004. Members Board The board members as of November 2016 are: * Sony * Xperi * DTS * Hitachi-LG Data Storage * Intel Corporation * Koninklijke Philips * LG Electronics * Lionsgate * Mitsubishi Electric * Oracle Corporation * Panasonic * Pioneer Corporation * Samsung Electronics * Sharp Corporation * D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra Density Optical
Ultra Density Optical (UDO) is an optical disc format designed for high-density storage of high-definition video and data. Overview An Ultra Density Optical disc, or UDO, is a 133.35 mm (5.25") ISO cartridge optical disc which can store up to 30 GB of data. The second generation UDO2 media format was introduced in April 2007 and has a capacity of up to 80 GB. Utilizing a design based on the Magneto-optical disc, but using Phase Change technology combined with a blue violet laser, a UDO/UDO2 disc can store substantially more data than a magneto-optical (MO) disc. This is due to the shorter wavelength (405 nm) of the blue-violet laser employed. MOs use a 650 nm-wavelength red laser. Because its beam width is shorter when burning to a disc than a red-laser for MO, a blue-violet laser allows more information to be stored digitally in the same amount of space. Current generations of UDO2 media store up to 60 GB. According to Plasmon, desktop UDO2 drives are priced at around ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shuji Nakamura
is a Japanese-born American electronic engineer and inventor specializing in the field of semiconductor technology, professor at the Materials Department of the College of Engineering, University of California, Santa Barbara (UCSB), and is regarded as the inventor of the blue LED, a major breakthrough in lighting technology. Together with Isamu Akasaki and Hiroshi Amano, he is one of the three recipients of the 2014 Nobel Prize for Physics "for the invention of efficient blue light-emitting diodes, which has enabled bright and energy-saving white light sources". In 2015, his input into commercialization and development of energy-efficient white LED lighting technology was recognized by the Global Energy Prize. In 2021, Nakamura, along with Akasaki, Nick Holonyak, M. George Craford and Russell D. Dupuis were awarded the Queen Elizabeth Prize for Engineering "for the creation and development of LED lighting, which forms the basis of all solid state lighting technology". Careers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HDCAM
HDCAM is a high-definition video digital recording videocassette version of Digital Betacam introduced in 1997 that uses an 8-bit discrete cosine transform (DCT) compressed 3:1:1 recording, in 1080i-compatible down-sampled resolution of 1440×1080, and adding 24p and 23.976 progressive segmented frame (PsF) modes to later models. The HDCAM codec uses rectangular pixels and as such the recorded 1440×1080 content is upsampled to 1920×1080 on playback. The recorded video bit rate is 144 Mbit/s. Audio is also similar, with four channels of AES3 20-bit, 48 kHz digital audio. Like Betacam, HDCAM tapes were produced in small and large cassette sizes; the small cassette uses the same form factor as the original Betamax. The main competitor to HDCAM was the DVCPRO HD format offered by Panasonic, which uses a similar compression scheme and bit rates ranging from 40 Mbit/s to 100 Mbit/s depending on frame rate. HDCAM is standardized as SMPTE 367M, also know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional electronic products, the largest video game console company and the largest video game publisher. Through Sony Entertainment Inc, it is one of the largest music companies (largest music publisher and second largest record label) and the third largest film studio, making it one of the most comprehensive media companies. It is the largest technology and media conglomerate in Japan. It is also recognized as the most cash-rich Japanese company, with net cash reserves of ¥2 trillion. Sony, with its 55 percent market share in the image sensor market, is the largest manufacturer of image sensors, the second largest camera manufacturer, and is among the semiconductor sales leaders. It is the world's largest player in the premium TV market for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
