American Memory is an Internet -based archive for public domain image resources, as well as audio , video , and archived Web content. Published by the Library of Congress , the archive launched on October 13, 1994, after $ 13 million was raised in private donations.
144-557: The pilot for the American Memory project was a digitization program which started in 1990. Selected Library of Congress holdings including examples of film, video, audio recordings, books and photographs were digitized and distributed on Laserdisc and CD-ROM . When the World Wide Web accelerated in 1993, the pilot program was refocused to deliver digitized materials by way of the internet. The National Digital Library
288-548: A 99-year lease of the New Territories in 1898. Hong Kong was occupied by Japan from 1941 to 1945 during World War II . The territory was handed over from the United Kingdom to China in 1997. Hong Kong maintains separate governing and economic systems from that of mainland China under the principle of one country, two systems . Originally a sparsely populated area of farming and fishing villages,
432-463: A proposed extradition amendment bill permitting the extradition of fugitives to mainland China. The protests are the largest in Hong Kong's history, with organisers claiming to have attracted more than three million Hong Kong residents. The Hong Kong regional government and Chinese central government responded to the protests with a number of administrative measures to quell dissent. In June 2020,
576-662: A 1,104-square-kilometre (426 sq mi) territory, Hong Kong is the fourth most densely populated region in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ceded Hong Kong Island in 1841–1842 as a consequence of losing the First Opium War . The colony expanded to the Kowloon Peninsula in 1860 and was further extended when the United Kingdom obtained
720-402: A 2021 thematic report by the Hong Kong government, after excluding foreign domestic helpers, the real number of non-Chinese ethnic minorities in the city was 301,344, or 4% of Hong Kong's population. About half the population have some form of British nationality , a legacy of colonial rule; 3.4 million residents have British National (Overseas) status, and 260,000 British citizens live in
864-597: A 4.7 in (12 cm) indentation in the loading tray, where the CD was placed for playback. At least two Pioneer models (the CLD-M301 and the CLD-M90) also operated as a CD changer, with several 4.7 in indentations around the circumference of the main tray. The Pioneer DVL-9, introduced in 1996, was both Pioneer's first consumer DVD player and the first combination DVD/LD player. The first high-definition video player
1008-680: A DTS decoder. Many 1990s A/V receivers combined the AC-3 decoder and DTS decoder logic, but an integrated AC-3 demodulator was rare both in LaserDisc players and in later A/V receivers. PAL LaserDiscs have a slightly longer playing time than NTSC discs, but have fewer audio options. PAL discs only have two audio tracks, consisting of either two analog-only tracks on older PAL LaserDiscs, or two digital-only tracks on newer discs. In comparison, later NTSC LaserDiscs are capable of carrying four tracks (two analog and two digital). On certain releases, one of
1152-605: A LaserDisc format that could store any form of digital data , as a data storage device similar to CD-ROM , with a large 3.28 GB storage capacity, comparable to the DVD-ROM format that would arrive 11 years later in 1995. The first LaserDisc title marketed in North America was the MCA DiscoVision release of Jaws on December 15, 1978. The last title released in North America was Paramount's Bringing Out
1296-524: A diverse ecosystem; over 3,000 species of vascular plants occur in the region (300 of which are native to Hong Kong), and thousands of insect, avian, and marine species. Hong Kong has a humid subtropical climate ( Köppen Cwa ), characteristic of southern China, despite being located south of the Tropic of Cancer , although closely bordering on a tropical climate . Summers are long, hot and humid, with occasional showers and thunderstorms and warm air from
1440-593: A few, such as Battlestar Galactica and Jaws , were time-compressed versions of their CAV or CLV DiscoVision originals. The time-compressed CLV re-issue of Jaws no longer had the original soundtrack, having had incidental background music replaced for the videodisc version due to high licensing costs (the original music would not be available until the THX LaserDisc box set was released in 1995). One Universal/Columbia co-production issued by MCA Disco Vision in both CAV and CLV versions, The Electric Horseman ,
1584-845: A four-year term. Twenty are directly elected from geographical constituencies , thirty-five represent functional constituencies (FC), and forty are chosen by an election committee consisting of representatives appointed by the Chinese central government. Thirty FC councillors are selected from limited electorates representing sectors of the economy or special interest groups, and the remaining five members are nominated from sitting district council members and selected in region-wide double direct elections . All popularly elected members are chosen by proportional representation . The 30 limited electorate functional constituencies fill their seats using first-past-the-post or instant-runoff voting. Twenty-two political parties had representatives elected to
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#17327867287861728-500: A given disc very quickly. By comparison, VHS would require tedious rewinding and fast-forwarding to get to specific points. Initially , LaserDiscs were cheaper than videocassettes to manufacture, because they lacked the moving parts and plastic outer shell which were necessary for VHS tapes to work, and the duplication process was much simpler. A VHS cassette had at least 14 parts (including the actual tape) while LaserDisc had one part with five or six layers. A disc could be stamped out in
1872-602: A handful of titles pressed by Technidisc that used CAA50. The final variant of CAA was CAA70, which could accommodate 70 minutes of playback time per side. There are no known uses of this format on the consumer market. Sound could be stored in either analog or digital format and in a variety of surround sound formats; NTSC discs could carry a stereo analog audio track, plus a stereo CD-quality uncompressed PCM digital audio track, which were ( EFM , CIRC , 16-bit and 44.1 kHz sample rate ). PAL discs could carry one pair of audio tracks, either analog or digital and
2016-498: A horizontal resolution of 425 television lines (TVL) for NTSC and 440 TVL for PAL discs, while VHS featured only 240 TVL with NTSC. Super VHS , released in 1987, reduced the quality gap, having horizontal luma resolution comparable to LaserDisc. But horizontal chroma resolution of Super VHS remained as low as that of standard VHS, about 40 TVL, while LaserDisc offered about 70 TVL of chroma resolution. LaserDisc could handle analog and digital audio where VHS
2160-418: A hyphen), with the first players referring to the format as Video Long Play . Pioneer Electronics later purchased the majority stake in the format and marketed it as both LaserVision (format name) and LaserDisc (brand name) in 1980, with some releases unofficially referring to the medium as Laser Videodisc . Philips produced the players while MCA produced the discs. The Philips-MCA collaboration
2304-474: A lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which was in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). The tape was also thin and delicate, and it was easy for a player mechanism, especially on
2448-438: A low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. By the advent of DVD , LaserDisc had declined considerably in popularity, so the two formats never directly competed with each other. LaserDisc was a composite video format: the luminance (black and white) and chrominance (color) information were transmitted in one signal, separated by
2592-476: A matter of seconds, whereas duplicating videotape required a complex bulk tape duplication mechanism and was a time-consuming process. By the end of the 1980s, average disc-pressing prices were over $ 5.00 per two-sided disc, due to the large amount of plastic material and the costly glass-mastering process needed to make the metal stamper mechanisms. Due to the larger volume of demand, videocassettes quickly became much cheaper to duplicate, costing as little as $ 1.00 by
2736-491: A neutral zone to safeguard its status as a free port. The colonial government prepared for a possible attack, evacuating all British women and children in 1940. The Imperial Japanese Army attacked Hong Kong on 8 December 1941 , the same morning as its attack on Pearl Harbor . Hong Kong was occupied by Japan for almost four years before the British resumed control on 30 August 1945. Its population rebounded quickly after
2880-449: A player equipped with a special "AC-3 RF" output and an external demodulator in addition to an AC-3 decoder . The demodulator was necessary to convert the 2.88 MHz modulated AC-3 information on the disc into a 384 kbit/s signal that the decoder could handle. In the mid to late 1990s, many higher-end AV receivers included the demodulator circuit specifically for the LaserDisc player's RF-modulated Dolby Digital AC-3 signal. By
3024-504: A projection of the FM signal along the track on the disc. When reading, the FM carrier can be reconstructed from the succession of pit edges, and demodulated to extract the original video signal (in practice, selection between pit and land parts uses intersection of the FM carrier with a horizontal line having an offset from the zero axis, for noise considerations). If PCM sound is present, its waveform, considered as an analog signal, can be added to
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#17327867287863168-409: A second language. Slightly over half the population (58.7%) speaks English , the other official language; 4.6% are native speakers, and 54.1% speak English as a second language. Code-switching , mixing English and Cantonese in informal conversation, is common among the bilingual population. Post-handover governments have promoted Mandarin , which is currently about as prevalent as English; 54.2% of
3312-531: A series of protests in 2014 which became known as the Umbrella Revolution. Discrepancies in the electoral registry and disqualification of elected legislators after the 2016 Legislative Council elections and enforcement of national law in the West Kowloon high-speed railway station raised further concerns about the region's autonomy. In June 2019, mass protests erupted in response to
3456-432: A severe amount of income inequality, which has risen since the handover, as the region's ageing population has gradually added to the number of nonworking people. Although median household income steadily increased during the decade to 2021, the wage gap remained high; the 90th percentile of earners receive 41% of all income. The city has the most billionaires per capita, with one billionaire per 109,657 people, as well as
3600-623: A single laser pickup. Pioneer produced some multi-disc models which held more than 50 LaserDiscs. For a short time in 1984, one company offered a "LaserStack" unit that added multi-disc capability to existing players: the Pioneer LD-600, LD-1100, or the Sylvania/Magnavox clones. It required the user to physically remove the player lid for installation, where it then attached to the top of the player. LaserStack held up to 10 discs and could automatically load or remove them from
3744-405: A transparent disc, was invented by David Paul Gregg and James Russell in 1963 (and patented in 1970 and 1990). The Gregg patents were purchased by MCA in 1968. By 1969, Philips had developed a videodisc in reflective mode, which has advantages over the transparent mode. MCA and Philips then decided to combine their efforts and first publicly demonstrated the videodisc in 1972. LaserDisc
3888-618: A two-part effort of the National Digital Library Project (NDLP). Starting in 1994, the goal of the NDLP to digitize millions of items by the year 2000 would not only be met but would even go beyond that when the year finally came. The first part or phase of the effort was piloted by the American Memory project which would have an extensive amount of the Library of Congress' source-materials digitized. Another segment of
4032-496: A wavelength of 780 nm. In March 1984, Pioneer introduced the first consumer player with a solid-state laser, the LD-700. It was also the first LaserDisc player to load from the front and not the top. One year earlier, Hitachi introduced an expensive industrial player with a laser diode, but the player had poor picture quality (due to an inadequate dropout compensator), and was made only in limited quantities. After Pioneer released
4176-431: Is a special administrative region of China , with executive, legislative, and judicial powers devolved from the national government . The Sino-British Joint Declaration provided for economic and administrative continuity through the handover, resulting in an executive-led governing system largely inherited from the territory's history as a British colony. Under these terms and the "one country, two systems" principle,
4320-410: Is governed by a hybrid regime that is not fully representative of the population. Legislative Council members elected by functional constituencies composed of professional and special interest groups are accountable to these narrow corporate electorates and not the general public. This electoral arrangement has guaranteed a pro-Beijing camp majority in the legislature since the handover. Similarly,
4464-417: Is not limited to, the photographic collection on transportation, Henry Ford and the automobile, the sewing machine, and Robert J. Oppenheimer. As a result of the three-year competition and all the new individual projects making American Memory more readily available, American Memory started to become recognized on a larger scale. In 1996, Time magazine named American Memory one of the top ten best websites in
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4608-490: Is recorded on the other side of this disc" are below the turtle. During the early years, MCA also manufactured discs for other companies including Paramount , Disney and Warner Bros. Some of them added their own names to the disc jacket to signify that the movie was not owned by MCA. After DiscoVision Associates shut down in early 1982, Universal Studio's videodisc software label (called MCA Videodisc until 1984), began reissuing many DiscoVision titles. Unfortunately, quite
4752-465: Is still not available in any other home video format with its original score intact; even the most recent DVD release has had substantial music replacement of both instrumental score and Willie Nelson's songs. An MCA release of Universal's Howard the Duck shows only the start credits shown in widescreen before changing to 4:3 for the rest of the film. For many years, this was the only disc-based release of
4896-542: The Basic Law of Hong Kong for 50 years after the handover. It does not specify how Hong Kong will be governed after 2047, and the central government's role in determining the territory's future system of government is the subject of political debate and speculation. Hong Kong's political and judicial systems may be integrated with China's at that time, or the territory may continue to be administered separately. However, in response to large-scale protests in 2019 and 2020 ,
5040-591: The Basic Law of Hong Kong is the regional constitution. The regional government is composed of three branches: The chief executive is the head of government and serves for a maximum of two five-year terms. The State Council (led by the Premier of China ) appoints the chief executive after nomination by the Election Committee , which is composed of 1500 business, community, and government leaders. The Legislative Council has 90 members, each serving
5184-604: The Chinese People's Political Consultative Conference appointed by the central government. Chinese national law does not generally apply in the region, and Hong Kong is treated as a separate jurisdiction. Its judicial system is based on common law , continuing the legal tradition established during British rule. Local courts may refer to precedents set in English law and overseas jurisprudence. However, mainland criminal procedure law applies to cases investigated by
5328-563: The Chinese central government 's adherence to the "one country, two systems" principle. After reversal of the last colonial era Legislative Council democratic reforms following the handover, the regional government unsuccessfully attempted to enact national security legislation pursuant to Article 23 of the Basic Law . The central government decision to implement nominee pre-screening before allowing chief executive elections triggered
5472-670: The Former Marine Police Headquarters was redeveloped into a commercial and retail complex, and Béthanie (built in 1875 as a sanatorium ) houses the Hong Kong Academy for Performing Arts . The Tin Hau Temple , dedicated to the sea goddess Mazu (originally built in 1012 and rebuilt in 1266), is the territory's oldest existing structure. The Ping Shan Heritage Trail has architectural examples of several imperial Chinese dynasties, including
5616-470: The MPEG-2 encoding process as video is prepared for DVD. Early DVD releases held the potential to surpass their LaserDisc counterparts, but often managed only to match them for image quality, and in some cases, the LaserDisc version was preferred. Proprietary human-assisted encoders manually operated by specialists could vastly reduce the incidence of artifacts, depending on playing time and image complexity. By
5760-734: The Office for Safeguarding National Security of the CPG in the HKSAR . Interpretative and amending power over the Basic Law and jurisdiction over acts of state lie with the central authority, making regional courts ultimately subordinate to the mainland's socialist civil law system. Decisions made by the Standing Committee of the National People's Congress override any territorial judicial process. Furthermore, in circumstances where
5904-670: The Paleolithic period. The claim is based on an archaeological investigation in Wong Tei Tung , Sai Kung in 2003. The archaeological works revealed knapped stone tools from deposits that were dated using optical luminescence dating . During the Middle Neolithic period, about 6,000 years ago, the region had been widely occupied by humans. Neolithic to Bronze Age Hong Kong settlers were semi-coastal people. Early inhabitants are believed to be Austronesians in
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6048-717: The People's Liberation Army is responsible for the region's defence. Although the Chairman of the Central Military Commission is supreme commander of the armed forces, the regional government may request assistance from the garrison. Hong Kong residents are not required to perform military service, and current law has no provision for local enlistment, so its defence is composed entirely of non-Hongkongers. The central government and Ministry of Foreign Affairs handle diplomatic matters, but Hong Kong retains
6192-595: The Safeguarding National Security Ordinance was passed by the Legislative Council to grant officials "even more powers to crack down on opposition to Beijing and the Hong Kong government" and includes penalties such as life imprisonment for political crimes such as treason and insurrection . Critics state that this expansion "will strike a lasting blow to the partial autonomy the city had been promised by China [in
6336-713: The Shanghai Street shophouses in Mong Kok . Mass-produced public-housing estates , built since the 1960s, are mainly constructed in modernist style . The Census and Statistics Department estimated Hong Kong's population at 7,413,070 in 2021. The overwhelming majority (91.6%) is Han Chinese , most of whom are Taishanese , Teochew , Hakka , and other Cantonese peoples . The remaining 8.4% are non-ethnic Chinese minorities, primarily Filipinos , Indonesians , and South Asians . However, most Filipinos and Indonesians in Hong Kong are short-term workers. According to
6480-502: The Sino-British Joint Declaration ]." Hong Kong's administrative divisions are divided into three levels: Areas (區域), Districts (地區), and Sub-districts (分區). Hong Kong is administratively divided into three areas: Hong Kong Island , Kowloon , and the New Territories . They are further divided into 18 districts. The area of Hong Kong Island has four districts, the area of Kowloon has five districts, and
6624-457: The Standing Committee of the National People's Congress passed the controversial Hong Kong national security law . The law criminalises secession, subversion, terrorism and collusion with foreign elements and establishes the Office for Safeguarding National Security of the CPG in the HKSAR, an investigative office under Central People's Government authority immune from HKSAR jurisdiction. Some of
6768-615: The Tsui Sing Lau Pagoda (Hong Kong's only remaining pagoda). Tong lau , mixed-use tenement buildings constructed during the colonial era, blended southern Chinese architectural styles with European influences. These were especially prolific during the immediate post-war period, when many were rapidly built to house large numbers of Chinese migrants. Examples include Lui Seng Chun , the Blue House in Wan Chai , and
6912-617: The central government in Beijing in June 2020 resulted in the suspension of bilateral extradition treaties by the United Kingdom, Canada, Australia, New Zealand, Finland, and Ireland. The United States ended its preferential economic and trade treatment of Hong Kong in July 2020 because it was no longer able to distinguish Hong Kong as a separate entity from the People's Republic of China. In 2024,
7056-486: The composite domain (having a video bandwidth and resolution approximately equivalent to the 1-inch (25 mm) Type C videotape format ) with analog frequency modulation (FM) stereo sound and pulse-code modulation (PCM) digital audio . Later discs used D-2 instead of Type C videotape for mastering. The LaserDisc at its most fundamental level was still recorded as a series of pits and lands much like CDs, DVDs, and even Blu-ray discs are today. In true digital media,
7200-730: The tallest buildings in Hong Kong and are among the tallest in the Asia-Pacific region. Other distinctive buildings lining the Hong Kong Island skyline include the HSBC Main Building , the anemometer -topped triangular Central Plaza , the circular Hopewell Centre , and the sharp-edged Bank of China Tower . Demand for new construction has contributed to frequent demolition of older buildings, freeing space for modern high-rises. However, many examples of European and Lingnan architecture are still found throughout
7344-475: The "official" name of the format remained LaserVision. In the early 1990s, the format's name was changed again to LaserDisc. Pioneer Electronics also entered the optical disc market in 1977 as a 50/50 joint venture with MCA called Universal-Pioneer and manufacturing MCA-designed industrial players under the MCA DiscoVision name (the PR-7800 and PR-7820). For the 1980 launch of the first Universal-Pioneer player,
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#17327867287867488-462: The "original" 20 dB CX system). This also relaxed calibration tolerances in players and helped reduce audible pumping if the CX decoder was not calibrated correctly. At least where the digital audio tracks were concerned, the sound quality was unsurpassed at the time compared to consumer videotape. However, the quality of the analog soundtracks could vary greatly depending upon the disc and, sometimes,
7632-526: The AC-3 signal to the standard Dolby Digital signal that was compatible with the standard Dolby Digital/PCM inputs on capable AV receivers. Another type marketed by Onkyo and Marantz converted the RF AC-3 signal to 6-channel analog audio. The two FM audio channels occupied the disc spectrum at 2.3 and 2.8 MHz on NTSC formatted discs and each channel had a 100 kHz FM deviation. The FM audio carrier frequencies were chosen to minimize their visibility in
7776-573: The Dead on October 3, 2000. Film titles continued to be released in Japan until September 21, 2001, with the last Japanese movie released being the Hong Kong film Tokyo Raiders from Golden Harvest . The last known LD title is Onta Station vol. 1018, a karaoke disc released on March 21, 2007. Production of LaserDisc players ended in July 2009, when Pioneer stopped making them. Pioneer continued to repair and service players until September 30, 2020, when
7920-648: The FM carrier, which modulates the width of the intersection with the horizontal threshold. As a result, space between pit centers essentially represent video (as frequency), and pit length code for PCM sound information. Early LaserDiscs featured in 1978 were entirely analog but the format evolved to incorporate digital stereo sound in CD format (sometimes with a TOSlink or coax output to feed an external digital-to-analog converter or DAC), and later multi-channel formats such as Dolby Digital and DTS . Since digital encoding and compression schemes were either unavailable or impractical in 1978, three encoding formats based upon
8064-504: The LD-700 player bore the term "Pioneer LaserDisc brand videodisc player". From 1981 until the early 1990s, all properly licensed discs carried the LaserVision name and logo, even Pioneer Artists titles. On single-sided LaserDiscs mastered by Pioneer, playing the wrong side would cause a still screen to appear with a happy, upside-down turtle that has a LaserDisc for a belly (nicknamed the "LaserDisc Turtle"). The words "Program material
8208-428: The LD-700, gas lasers were no longer used in consumer players, despite their advantages, although Philips continued to use gas lasers in their industrial units until 1985. Most LaserDisc players required the user to manually turn the disc over to play the other side. A number of players (all diode laser based) were made that were capable of playing both sides of the disc automatically, using a mechanism to physically flip
8352-406: The Legislative Council and the requirement that all candidates be vetted and approved by a Beijing-appointed Candidate Eligibility Review Committee . In May 2023, the Legislative Council also introduced legislation to reduce the number of directly elected seats in the district councils, and a District Council Eligibility Review Committee was similarly established to vet candidates. Hong Kong
8496-548: The Legislative Council in the 2016 election . These parties have aligned themselves into three ideological groups: the pro-Beijing camp (the current government), the pro-democracy camp , and localist groups . The Chinese Communist Party does not have an official political presence in Hong Kong, and its members do not run in local elections. Hong Kong is represented in the National People's Congress by 36 deputies chosen through an electoral college and 203 delegates in
8640-618: The Legislative Council passed the National Anthem Ordinance , which criminalised "insults to the national anthem of China". The Chinese central government meanwhile enacted the Hong Kong national security law to help quell protests in the region. Nine months later, in March 2021, the Chinese central government introduced amendments to Hong Kong's electoral system , which included the reduction of directly elected seats in
8784-620: The Library of Congress sponsored a three-year competition with a $ 2 million gift from the Ameritech Corporation to enable public research, and academic libraries, museums, historical societies, and archival institutions (with the exception of federal institutions) to digitize American history collections and make them available on the library's American Memory site. The competition produced 23 digital collections that complement American Memory, which now features more than 100 thematic collections. The American Memory project started as
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#17327867287868928-421: The Library of Congress's commitment to harnessing new technology as it fulfills its mission "to sustain and preserve a universal collection of knowledge and creativity for future generations." Laserdisc The LaserDisc ( LD ) is a home video format and the first commercial optical disc storage medium, initially licensed, sold and marketed as MCA DiscoVision (also known simply as "DiscoVision") in
9072-587: The Middle Neolithic period and later the Yue people. As hinted by the archaeological works in Sha Ha, Sai Kung, rice cultivation had been introduced since Late Neolithic period. Bronze Age Hong Kong featured coarse pottery, hard pottery, quartz and stone jewelry, as well as small bronze implements. The Qin dynasty incorporated the Hong Kong area into China for the first time in 214 BCE, after conquering
9216-503: The New Territories. Much of this is built on reclaimed land ; 70 km (27 sq mi) (6% of the total land or about 25% of developed space in the territory) is reclaimed from the sea. Undeveloped terrain is hilly to mountainous, with very little flat land, and consists mostly of grassland, woodland, shrubland, or farmland. About 40% of the remaining land area is country parks and nature reserves. The territory has
9360-483: The North American retail marketplace, as media were no longer being produced. Players were still exported to North America from Japan until the end of 2001. As of 2021 , the format retains some popularity among "thousands" of American collectors, and to a greater degree in Japan, where the format was better supported and more prevalent during its lifespan. In Europe, LaserDisc always remained an obscure format. It
9504-478: The Philippines and Indonesia, have little protection under regional law. Although they live and work in Hong Kong, these workers are not treated as ordinary residents and do not have the right of abode in the territory. Sex trafficking is also an issue, local, mainland Chinese, and foreign women have been trafficked for sex in brothels , homes, and businesses in the city. The Joint Declaration guarantees
9648-538: The Standing Committee declares a state of emergency in Hong Kong, the State Council may enforce national law in the region. The territory's jurisdictional independence is most apparent in its immigration and taxation policies. The Immigration Department issues passports for permanent residents which differ from those of the mainland or Macau, and the region maintains a regulated border with
9792-473: The United States in 1978. Its diameter typically spans 30 cm (12 in). Unlike most optical-disc standards, LaserDisc is not fully digital , and instead requires the use of analog video signals. Although the format was capable of offering higher-quality video and audio than its consumer rivals, VHS and Betamax videotape, LaserDisc never managed to gain widespread use in North America. This
9936-679: The United States. The website was also among the six finalists in the Education segment of the National Information Infrastructure Awards Program in 1996. The project continued to receive citations and awards since it was established in 1990 and it has also helped serve on the research front from time to time. The National Digital Library exceeded its goal of making five million items available online by 2000. American Memory will continue to expand online historical content as an integral component of
10080-599: The VP-1000 was noted as a "laser disc player", although the "LaserDisc" logo was displayed clearly on the device. In 1981, "LaserDisc" was used exclusively for the medium itself, although the official name was "LaserVision" (as seen at the beginning of many LaserDisc releases, just before the start of the film). Pioneer reminded numerous video magazines and stores in 1984 that LaserDisc was a trademarked word, standing only for LaserVision products manufactured for sale by Pioneer Video or Pioneer Electronics. A 1984 Ray Charles ad for
10224-606: The Yuan Dynasty. By the end of the Yuan dynasty , seven large families had settled in the region and owned most of the land. Settlers from nearby provinces migrated to Kowloon throughout the Ming dynasty . The earliest European visitor was Portuguese explorer Jorge Álvares , who arrived in 1513. Portuguese merchants established a trading post called Tamão in Hong Kong waters and began regular trade with southern China. Although
10368-747: The ability to maintain separate economic and cultural relations with foreign nations . The territory actively participates in the World Trade Organization , the Asia-Pacific Economic Cooperation forum, the International Olympic Committee , and many United Nations agencies. The regional government maintains trade offices in Greater China and other nations. The imposition of the Hong Kong national security law by
10512-655: The aforementioned Jaws . Philips' preferred name for the format was "VLP", after the Dutch words Video Langspeel-Plaat ("Video long-play disc"), which in English-speaking countries stood for Video Long-Play. The first consumer player, the Magnavox VH-8000 even had the VLP logo on the player. For a while in the early and mid-1970s, Philips also discussed a compatible audio-only format they called "ALP", but that
10656-586: The aforementioned acts were previously considered protected speech under Hong Kong law. The United Kingdom considers the law to be a serious violation of the Joint Declaration. In October 2020, the Hong Kong Police arrested seven pro- democracy politicians over tussles with pro-Beijing politicians in the Legislative Council in May. They were charged with contempt and interfering with members of
10800-635: The agreement. After more than a year of further hostilities, Hong Kong Island was formally ceded to the United Kingdom in the 1842 Treaty of Nanking . Administrative infrastructure was quickly built by early 1842, but piracy, disease, and hostile Qing policies initially prevented the government from attracting commerce. Conditions on the island improved during the Taiping Rebellion in the 1850s, when many Chinese refugees, including wealthy merchants, fled mainland turbulence and settled in
10944-413: The analog audio tracks were further made unavailable through replacement with supplementary audio such as isolated scores or audio commentary. This effectively reduced playback of a DTS disc on a non-DTS equipped system to mono audio, or in a handful of cases, no film soundtrack at all. Only one 5.1 surround sound option existed on a given LaserDisc (either Dolby Digital or DTS). As such, if surround sound
11088-505: The analog tracks is used to carry a modulated AC-3 signal for 5.1 channel audio (for decoding and playback by newer LaserDisc players with an "AC-3 RF" output). Older NTSC LaserDiscs made before 1984 (such as the original DiscoVision discs) only have two analog audio tracks. The earliest players employed gas helium–neon laser tubes to read discs and had a red-orange light with a wavelength of 632.8 nm , while later solid-state players used infrared semiconductor laser diodes with
11232-399: The area of the New Territories has nine districts. Each district is represented by a district council . The district councils advise the government on local issues such as public facility provisioning, community programme maintenance, cultural promotion, and environmental policy. As of 2024, there are a total of 470 district council seats, 88 of which are directly elected. In May 2023,
11376-471: The beginning of the 1990s. LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needed to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LaserDiscs could theoretically last beyond
11520-1165: The chief executive is selected by establishment politicians and corporate members of the Election Committee rather than directly elected. Despite universal suffrage being established as ultimate goals for the election of the chief executive and all members of the Legislative Council in Articles 45 and 68 of the basic law, the legislature is only partially directly elected, and the executive continues to be nominated by an unrepresentative body. The government has been repeatedly petitioned to introduce direct elections for these positions, but has not introduced these direct elections as of 2024. Ethnic minorities (except those of European ancestry) have marginal representation in government and often experience discrimination in housing, education, and employment. Employment vacancies and public service appointments frequently have language requirements which minority job seekers do not meet, and language education resources remain inadequate for Chinese learners. Foreign domestic helpers , mostly women from
11664-635: The colony. Further tensions between the British and Qing over the opium trade escalated into the Second Opium War . The Qing were again defeated and forced to give up Kowloon Peninsula and Stonecutters Island in the Convention of Peking . By the end of this war, Hong Kong had evolved from a transient colonial outpost into a major entrepôt . Rapid economic improvement during the 1850s attracted foreign investment, as potential stakeholders became more confident in Hong Kong's future. The colony
11808-590: The council, while none of the pro-Beijing lawmakers were detained. Annual commemorations of the 1989 Tiananmen Square protests and massacre were also cancelled amidst fears of violating the national security law. In March 2021, the Chinese central government unilaterally changed Hong Kong's electoral system and established the Candidate Eligibility Review Committee , which would be tasked with screening and evaluating political candidates for their "patriotism", effectively crushing
11952-559: The digital tracks on a PAL disc were 16-bit, 44.1 kHz as on a CD; in the UK, the term "LaserVision" is used to refer to discs with analog sound, while "LaserDisc" is used for those with digital audio. The digital sound signal in both formats is EFM -encoded, as in CD . Dolby Digital (also called AC-3) and DTS , which are now common on DVD releases, first became available on LaserDisc, and Star Wars: Episode I – The Phantom Menace (1999) which
12096-406: The end of LaserDisc's run, DVDs were living up to their potential as a superior format. DVDs use compressed audio formats such as Dolby Digital and DTS for multichannel sound. Most LaserDiscs were encoded with stereo (often Dolby Surround) CD quality audio 16bit/44.1 kHz tracks as well as analog audio tracks. DTS-encoded LaserDiscs have DTS soundtracks of 1,235 kbit/s instead of
12240-404: The end of the New Territories lease approached, and Governor Murray MacLehose raised the question of Hong Kong's status with Deng Xiaoping in 1979. Diplomatic negotiations with China resulted in the 1984 Sino-British Joint Declaration , in which the United Kingdom agreed to the handover of the colony in 1997 and China would guarantee Hong Kong's economic and political systems for 50 years after
12384-416: The entirely digital DVD, LaserDiscs used only analog video. As the LaserDisc format was not digitally encoded and did not make use of compression techniques, it was immune to video macroblocking (most visible as blockiness during high motion sequences) or contrast banding (subtle visible lines in gradient areas, such as out-of-focus backgrounds, skies, or light casts from spotlights) which could be caused by
12528-468: The film, until widescreen DVD formats were released with extras. Also, the 1989 and 1996 LaserDisc releases of E.T. the Extra-Terrestrial are the only formats to include the cut scene of Harrison Ford , in the role of the school principal, telling off Elliott for letting the frogs free in the biology class. LaserDisc had several advantages over VHS . It featured a far sharper picture with
12672-452: The first phase possessed the goal of establishing a way or model to somehow share or distribute such source-materials between libraries. Phase two of the project saw the continuation of the digitization of the materials from the Library of Congress but also other libraries as well. The content included in the digital library through American Memory and the NDLP is vast and includes a wide array of historical items. Some items featured include, but
12816-541: The format was introduced in Europe in 1983 with the LaserVision name, although Philips used "VLP" in model designations, such as VLP-600. Following lackluster sales there (around 12–15,000 units Europe-wide), Philips tried relaunching the entire format as "CD-Video" in 1987, with the name appearing not just on the new hybrid 12 cm discs , but also on standard 20 and 30 cm LaserDiscs with digital audio. While this name and logo appeared on players and labels for years,
12960-459: The frame number on the remote keypad, a feature not common among DVD players. Some DVD players have a cache feature, which stores a certain amount of the video in RAM, which allows the player to index a DVD as quickly as an LD, even down to the frame in some players. Hong Kong Hong Kong is a special administrative region of China . With 7.4 million residents of various nationalities in
13104-572: The government proposed reforms to the District Council electoral system which further cut the number of directly elected seats from 452 to 88, and total seats from 479 to 470. A requirement that district council candidates be vetted and approved by the District Council Eligibility Review Committee was also proposed. The Legislative Council approved the reforms in July 2023. Hong Kong
13248-418: The handover. The impending handover triggered a wave of mass emigration as residents feared an erosion of civil rights, the rule of law, and quality of life. Over half a million people left the territory during the peak migration period, from 1987 to 1996. The Legislative Council became a fully elected legislature for the first time in 1995 and extensively expanded its functions and organisations throughout
13392-561: The hyphen), which became the official spelling. Technical documents and brochures produced by MCA Disco-Vision during the early and mid-'70s also used the term "Disco-Vision Records" to refer to the pressed discs. MCA owned the rights to the largest catalog of films in the world during this time, and they manufactured and distributed the DiscoVision releases of those films under the "MCA DiscoVision" software and manufacturing label; consumer sale of those titles began on December 11, 1978, with
13536-628: The image. To help deal with this, Pioneer decided to implement the CX Noise Reduction System on the analog tracks. By reducing the dynamic range and peak levels of the audio signals stored on the disc, filtering requirements were relaxed and visible beats greatly reduced or eliminated. The CX system gives a total NR effect of 20 dB, but in the interest of better compatibility for non-decoded playback, Pioneer reduced this to only 14 dB of noise reduction (the RCA CED system used
13680-732: The indigenous Baiyue . The region was consolidated under the Nanyue kingdom (a predecessor state of Vietnam ) after the Qin collapse and recaptured by China after the Han conquest . During the Mongol conquest of China in the 13th century, the Southern Song court was briefly located in modern-day Kowloon City (the Sung Wong Toi site) before its final defeat in the 1279 Battle of Yamen by
13824-401: The last years of the colonial rule. The handover of Hong Kong to China was at midnight on 1 July 1997, after 156 years of British rule. Immediately after the handover, Hong Kong was severely affected by several crises. The Hong Kong government was forced to use substantial foreign exchange reserves to maintain the Hong Kong dollar's currency peg during the 1997 Asian financial crisis , and
13968-468: The late 1990s, with LaserDisc players and disc sales declining due to DVD's growing popularity, the AV receiver manufacturers removed the demodulator circuit. Although DVD players were capable of playing Dolby Digital tracks, the signals out of DVD players were not in a modulated form and were not compatible with the inputs designed for LaserDisc AC-3. Outboard demodulators were available for a period that converted
14112-536: The maritime area is included) consists of Hong Kong Island , the Kowloon Peninsula , the New Territories , Lantau Island , and over 200 other islands. Of the total area, 1,073 km (414 sq mi) is land and 35 km (14 sq mi) is water. The territory's highest point is Tai Mo Shan , 957 metres (3,140 ft) above sea level. Urban development is concentrated on the Kowloon Peninsula, Hong Kong Island, and in new towns throughout
14256-735: The north and occasionally result in chilly weather. Autumn is the sunniest season, whilst spring is generally cloudy. Snowfall has been extremely rare in Hong Kong; the last reported instance was on Tai Mo Shan in 1975. Hong Kong averages 1,709 hours of sunshine per year. Historic temperature extremes at the Hong Kong Observatory are 36.6 °C (97.9 °F) on 22 August 2017 and 0.0 °C (32.0 °F) on 18 January 1893. The highest and lowest recorded temperatures in all of Hong Kong are 39.0 °C (102 °F) at Wetland Park on 22 August 2017, and −6.0 °C (21.2 °F) at Tai Mo Shan on 24 January 2016 . Hong Kong has
14400-426: The opium trade. The commissioner destroyed opium stockpiles and halted all foreign trade, triggering a British military response and the First Opium War . The Qing surrendered early in the war and ceded Hong Kong Island in the Convention of Chuenpi . British forces began controlling Hong Kong shortly after the signing of the convention, from 26 January 1841. However, both countries were dissatisfied and did not ratify
14544-451: The pits (or their edges) directly represent 1s and 0s of a binary digital information stream. On a LaserDisc, the information is encoded as analog frequency modulation and is contained in the lengths and spacing of the pits. A carrier frequency is modulated by the baseband video signal (and analog soundtracks). In a simplified view, positive parts of this variable frequency signal can produce lands and negative parts can be pits, which results in
14688-614: The player or change sides in around 15 seconds. The first mass-produced industrial LaserDisc player was the MCA DiscoVision PR-7820, later rebranded the Pioneer PR7820 . In North America, this unit was used in many General Motors dealerships as a source of training videos and presentation of GM's new line of cars and trucks in the late 1970s and early 1980s. Most players made after the mid-1980s were capable of also playing Compact Discs . These players included
14832-416: The player to refuse commands to skip a specific part (such as fast forwarding through copyright warnings). (Some DVD players, particularly higher-end units, do have the ability to ignore the blocking code and play the video without restrictions, but this feature is not common in the usual consumer market.) With CAV LaserDiscs, the user could jump directly to any individual frame of a video simply by entering
14976-741: The player. Many early and lower-end LaserDisc players had poor analog audio components, and in turn, many early discs had poorly mastered analog audio tracks, making digital soundtracks in any form more desirable to serious enthusiasts. Early DiscoVision and LaserDisc titles lacked the digital audio option, but many of those movies received digital sound in later re-issues by Universal, and the quality of analog audio tracks generally improved greatly as time went on. Many discs that had originally carried old analog stereo tracks received new Dolby Stereo and Dolby Surround tracks instead often in addition to digital tracks, which helped boost sound quality. Later analog discs also applied CX noise reduction , which improved
15120-591: The population speak Mandarin, with 2.3% native speakers and 51.9% as a second language. Traditional Chinese characters are used in writing, rather than the simplified characters used in the mainland . Among the religious population, the traditional " three teachings " of China, Buddhism , Confucianism , and Taoism , have the most adherents (20%), followed by Christianity (12%) and Islam (4%). Followers of other religions, including Sikhism , Hinduism , and Judaism , generally originate from regions where their religion predominates. Life expectancy in Hong Kong
15264-440: The post-war decades to provide safer housing, integrity in the civil service, and more reliable transportation. Nevertheless, widespread public discontent resulted in multiple protests from the 1950s to 1980s, including pro- Republic of China and pro- Chinese Communist Party protests. In the 1967 Hong Kong riots , pro- PRC protestors clashed with the British colonial government. As many as 51 were killed and 802 were injured in
15408-570: The receiver. While good comb filters could separate the signals adequately, the two signals could not be completely separated. On DVD-Video , images are stored in the YCbCr format, with the chroma information being entirely discrete, which results in far higher fidelity, particularly at strong color borders or regions of high detail (especially if there is moderate movement in the picture) and low-contrast details such as skin tones, where comb filters almost inevitably smudge some detail. In contrast to
15552-476: The recovery from this was muted by an H5N1 avian-flu outbreak and a housing surplus. This was followed by the 2003 SARS epidemic , during which the territory experienced its most serious economic downturn. Chinese communists portrayed the return of Hong Kong as key moment in the PRC's rise to great power status. Political debates after the handover have centred around the region's democratic development and
15696-438: The reduced bitrate of 768 kbit/s commonly employed on DVDs with optional DTS audio. LaserDisc players could provide a greater degree of control over the playback process. Unlike many DVD players, the transport mechanism always obeyed commands from the user: pause, fast-forward, and fast-reverse commands were always accepted (barring malfunctions). There were no "User Prohibited Options" where content protection code instructed
15840-543: The region into a wasteland. The Kangxi Emperor lifted the maritime trade prohibition, allowing foreigners to enter Chinese ports in 1684. Qing authorities established the Canton System in 1757 to regulate trade more strictly, restricting non-Russian ships to the port of Canton . Although European demand for Chinese commodities like tea, silk, and porcelain was high, Chinese interest in European manufactured goods
15984-731: The remainder of the Pro-Democracy camp . Hong Kong is on China's southern coast, 60 km (37 mi) east of Macau, on the east side of the mouth of the Pearl River estuary . It is surrounded by the South China Sea on all sides except the north, which neighbours the Guangdong city of Shenzhen along the Sham Chun River . The territory's 1,110.18 km (428.64 sq mi) area (2,754.97 km if
16128-404: The remaining parts inventory was exhausted. It was estimated that in 1998, LaserDisc players were in approximately 2% of U.S. households (roughly two million). By comparison, in 1999, players were in 10% of Japanese households. A total of 16.8 million LaserDisc players were sold worldwide, of which 9.5 million were sold by Pioneer. By 2001, LaserDisc had been completely replaced by DVD in
16272-412: The rest of the country. All travellers between Hong Kong and China and Macau must pass through border controls, regardless of nationality. Mainland Chinese citizens do not have right of abode in Hong Kong and are subject to immigration controls. Public finances are handled separately from the national government; taxes levied in Hong Kong do not fund the central authority. The Hong Kong Garrison of
16416-460: The rotation speed were used: As Pioneer introduced digital audio to LaserDisc in 1985, it further refined the CAA format. CAA55 was introduced in 1985 with a total playback capacity per side of 55 minutes 5 seconds, reducing the video capacity to resolve bandwidth issues with the inclusion of digital audio. Several titles released between 1985 and 1987 were analog audio only due to the length of
16560-411: The signal-to-noise ratio of the audio. DTS audio, when available on a disc, replaced the digital audio tracks; hearing DTS-encoded audio required only an S/PDIF compliant digital connection to a DTS decoder. On a DTS disc, digital PCM audio was not available, so if a DTS decoder was also not available, the only option was to fall back to the analog Dolby Surround or stereo audio tracks. In some cases,
16704-491: The single word Hongkong until 1926, when the government officially adopted the two-word name. Some corporations founded during the early colonial era still keep this name, including Hongkong Land , Hongkong Electric Company , Hongkong and Shanghai Hotels and the Hongkong and Shanghai Banking Corporation (HSBC). Earliest known human traces in what is now Hong Kong are dated by some to 35,000 and 39,000 years ago during
16848-536: The source of the romanised name is unknown, it is generally believed to be an early phonetic rendering of the Cantonese (or Tanka Cantonese ) phrase hēung góng . The name translates as "fragrant harbour" or "incense harbour". "Fragrant" may refer to the sweet taste of the harbour's freshwater influx from the Pearl River or to the odour from incense factories lining the coast of northern Kowloon . The incense
16992-481: The southwest. The humid nature of Hong Kong exacerbates the warmth of summer. Typhoons occur most often then, sometimes resulting in floods or landslides. Also rarely occurring are waterspouts and tornadoes , which occurred at Hong Kong International Airport on 26 September 2020 and at Victoria Harbour on 28 September 2024. Winters are short, mild and usually sunny at the beginning, becoming cloudy towards February. Frequent cold fronts bring strong, cooling winds from
17136-410: The territory is now one of the world's most significant financial centres and commercial ports. Hong Kong is the world's third-ranked global financial centre (behind New York City and London ), ninth-largest exporter, and eighth-largest importer. Its currency, the Hong Kong dollar , is the ninth most traded currency in the world. Home to the seventh-highest number of billionaires of any city in
17280-465: The territory. The vast majority also hold Chinese nationality , automatically granted to all ethnic Chinese residents at the handover. Headline population density exceeds 7,060 people/km , and is the fourth-highest in the world. The predominant language is Cantonese , a variety of Chinese originating in Guangdong. It is spoken by 93.7% of the population, 88.2% as a first language and 5.5% as
17424-512: The territory. Older government buildings are examples of colonial architecture. The 1846 Flagstaff House , the former residence of the Commander of the British forces in Hong Kong , is the oldest Western-style building in Hong Kong. Some buildings, such as the Court of Final Appeal Building and the Hong Kong Observatory retain their original functions, and others have been adapted and reused ;
17568-594: The title and the desire to keep the film on one disc (e.g., Back to the Future ). By 1987, Pioneer had overcome the technical challenges and was able to once again encode in CAA60, allowing a total of 60 minutes 5 seconds. Pioneer further refined CAA, offering CAA45, encoding 45 minutes of material, but filling the entire playback surface of the side. Used on only a handful of titles, CAA65 offered 65 minutes 5 seconds of playback time per side. There were
17712-525: The traders were expelled after military clashes in the 1520s, Portuguese-Chinese trade relations were re-established by 1549 . Portugal acquired a permanent lease for Macau in 1887. After the Qing conquest , maritime trade was banned under the Haijin policies. From 1661 to 1683, the population of most of the area forming present day Hong Kong was cleared under the Great Clearance , turning
17856-553: The video image, so that even with a poorly mastered disc, audio carrier beats in the video would be at least ‑35 dB down, and thus, invisible. Due to the frequencies chosen, the 2.8 MHz audio carrier (Right Channel) and the lower edge of the chroma signal were very close together, and if filters were not carefully set during mastering, there could be interference between the two. In addition, high audio levels combined with high chroma levels could cause mutual interference, leading to beats becoming visible in highly saturated areas of
18000-485: The violence, including dozens killed by the Royal Hong Kong Police via beatings and shootings. Although the territory's competitiveness in manufacturing gradually declined because of rising labour and property costs, it transitioned to a service-based economy. By the early 1990s, Hong Kong had established itself as a global financial centre and shipping hub. The colony faced an uncertain future as
18144-756: The war, as skilled Chinese migrants fled from the Chinese Civil War and more refugees crossed the border when the Chinese Communist Party took control of mainland China in 1949. Hong Kong became the first of the Four Asian Tiger economies to industrialise during the 1950s. With a rapidly increasing population, the colonial government attempted reforms to improve infrastructure and public services. The public-housing estate programme , Independent Commission Against Corruption , and Mass Transit Railway were all established during
18288-516: The world and currently the only place in Asia to be in the top 5. The city has the highest life expectancy in the world , and a public transport usage exceeding 90 per cent. The name of the territory, first romanised as "He-Ong-Kong" in 1780, originally referred to a small inlet located between Aberdeen Island and the southern coast of Hong Kong Island. Aberdeen was an initial point of contact between British sailors and local fishermen. Although
18432-494: The world's largest number of skyscrapers , with 554 towers taller than 150 metres (490 ft), and the third-largest number of high-rise buildings in the world. The lack of available space restricted development to high-density residential tenements and commercial complexes packed closely together on buildable land. Single-family detached homes are uncommon and generally only found in outlying areas. The International Commerce Centre and Two International Finance Centre are
18576-454: The world, Hong Kong has the largest number of ultra high-net-worth individuals . Although the city has one of the highest per capita incomes in the world, severe income inequality exists among the population. Despite being the city with the most skyscrapers in the world , housing in Hong Kong is consistently in high demand . Hong Kong is a highly developed territory and has a Human Development Index (HDI) of 0.956, ranking fourth in
18720-420: Was 81.3 years for males and 87.2 years for females in 2022, one of the highest in the world. Cancer , pneumonia , heart disease , cerebrovascular disease , and accidents are the territory's five leading causes of death. The universal public healthcare system is funded by general-tax revenue, and treatment is highly subsidised; on average, 95% of healthcare costs are covered by the government. The city has
18864-853: Was chosen by the British Broadcasting Corporation (BBC) for the BBC Domesday Project in the mid-1980s, a school-based project to commemorate the 900 years since the original Domesday Book in England. From 1991 until the late 1990s, the BBC also used LaserDisc technology (specifically Sony CRVdisc) to play out their channel idents . A standard home video LaserDisc is 12 in (30 cm) in diameter and made up of two single-sided aluminum discs layered in plastic. Although similar in appearance to compact discs or DVDs , early LaserDiscs used analog video stored in
19008-479: Was created through bipartisan support in the United States Congress. Initially publicly funded with $ 15 million over five years, a public-private partnership of entrepreneurs and philanthropists led to more than $ 45 million in private sponsorship from 1994 through 2000. At first, only $ 13 million was donated from private sectors but the project gained momentum as the years went on. Beginning in 1996,
19152-460: Was desired, the disc must be matched to the capabilities of the playback equipment (LaserDisc player and receiver/decoder) by the purchaser. A fully capable LaserDisc playback system included a newer LaserDisc player that was capable of playing digital tracks; had a digital optical output for digital PCM and DTS encoded audio; was aware of AC-3 audio tracks; and had an AC-3 coaxial output, an external or internal AC-3 RF demodulator and AC-3 decoder, and
19296-610: Was first available on the market in Atlanta, Georgia , on December 11, 1978, two years after the introduction of the VHS VCR , and four years before the introduction of the CD (which is based on laser disc technology). Initially licensed, sold, and marketed as MCA DiscoVision (also known as simply DiscoVision ) in 1978, the technology was previously referred to internally as Optical Videodisc System , Reflective Optical Videodisc , Laser Optical Videodisc , and Disco-Vision (with
19440-538: Was further expanded in 1898 when the United Kingdom obtained a 99-year lease of the New Territories. The University of Hong Kong was established in 1911 as the territory's first institution of higher education. Kai Tak Airport began operation in 1924, and the colony avoided a prolonged economic downturn after the 1925–26 Canton–Hong Kong strike . At the start of the Second Sino-Japanese War in 1937, Governor Geoffry Northcote declared Hong Kong
19584-531: Was insignificant, so that Chinese goods could only be bought with precious metals. To reduce the trade imbalance, the British sold large amounts of Indian opium to China. Faced with a drug crisis, Qing officials pursued ever more aggressive actions to halt the opium trade. In 1839, the Daoguang Emperor rejected proposals to legalise and tax opium and ordered imperial commissioner Lin Zexu to eradicate
19728-484: Was largely due to the high cost of the players and their inability to record TV programs. It eventually did gain some traction in that region and became mildly popular in the 1990s. It also saw a modest share of adoption in Australia and several European countries. By contrast, the format was much more popular in Japan and in the more affluent regions of Southeast Asia , such as Hong Kong, Singapore, and Malaysia, and
19872-545: Was mostly analog only (VHS could have PCM audio in professional applications but it was uncommon), and the NTSC discs could store multiple audio tracks. This allowed for extras such as director's commentary tracks and other features to be added onto a film, creating "Special Edition" releases that would not have been possible with VHS. Disc access was random and chapter-based, like the DVD format, meaning that one could jump to any point on
20016-417: Was released on LaserDisc in Japan, was among the first home video releases ever to include 6.1 channel Dolby Digital EX Surround (along with a few other late-life releases from 1999 to 2001). Unlike DVDs, which carry Dolby Digital audio in digital form, LaserDiscs stored Dolby Digital in a frequency modulated form within a track normally used for analog audio. Extracting Dolby Digital from a LaserDisc required
20160-593: Was soon dropped as the Compact Disc system became a non-compatible project in the Philips corporation. Until early 1980, the format had no "official" name. The LaserVision Association, made up of MCA, Universal-Pioneer, IBM , and Philips/Magnavox, was formed to standardize the technical specifications of the format (which had been causing problems for the consumer market) and finally named the system officially as "LaserVision". After its introduction in Japan in 1981,
20304-411: Was stored near Aberdeen Harbour for export before Victoria Harbour was developed. Sir John Davis (the second colonial governor) offered an alternative origin; Davis said that the name derived from "Hoong-keang" ("red torrent"), reflecting the colour of soil over which a waterfall on the island flowed. The simplified name Hong Kong was frequently used by 1810. The name was also commonly written as
20448-629: Was the Pioneer HLD-X0. A later model, the HLD-X9, featured a superior comb filter , and laser diodes on both sides of the disc. During its development, MCA (which co-owned the technology), referred to it as the Optical Videodisc System , "Reflective Optical Videodisc" or "Laser Optical Videodisc", depending on the document. They changed the name once in 1969 to Disco-Vision and then again in 1978 to DiscoVision (without
20592-493: Was the prevalent rental video medium in Hong Kong during the 1990s. Its superior video and audio quality made it a popular choice among videophiles and film enthusiasts during its lifespan. The technologies and concepts behind LaserDisc were the foundation for later optical disc formats, including Compact Disc (CD), DVD , and Blu-ray (BD). LaserDisc players continued to be produced until July 2009, when Pioneer stopped making them. Optical video recording technology , using
20736-513: Was unsuccessful – and was discontinued after a few years. Several of the scientists responsible for the early research (Richard Wilkinson, Ray Dakin and John Winslow) founded Optical Disc Corporation (now ODC Nimbus). LaserDisc was launched in Japan in October 1981, and a total of approximately 3.6 million LaserDisc players had been sold before its discontinuation in 2009. In 1984, Sony offered
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