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| == Development of Electronic Television, 1924-1941 == | | {{MilestoneLayout|citation=There are four plaques in order to provide space to list the achievements. |
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| <p>''Professor Kenjiro Takayanagi started his research program in television at Hamamatsu Technical College (now Shizuoka University) in 1924. He transmitted an image of the Japanese character イ(i) on a cathode-ray tube on 25 December 1926 and broadcast video over an electronic television system in 1935. His work, patents, articles, and teaching helped lay the foundation for the rise of Japanese television and related industries to global leadership.''</p>
| | BELL LABS – WIRELESS AND SATELLITE COMMUNICATIONS, 1925-1983 |
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| <p>The milestone plaque may be viewed at the site of the research at Hamamatsu Technical College (now Shizuoka University). The plaque is beside a bronze statue of Prof. Kenjiro Takayanagi in front of the Research Institute of Electronics, Shizuoka University. Street address of the plaque location is: 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8011 Japan. </p>
| | Bell Telephone Laboratories, Inc. introduced: the first radio astronomical observations (1933), Smith Chart (1939), early mobile phone service (1946), cellular wireless concept (1947), TDX Microwave Radio System (1947), TD Transcontinental Microwave Radio System (1950), Telstar - first active communications satellite (1962), first observation of the cosmic background radiation (1964), first U.S. cellular wireless system (1978), digital cellular technology (1980), and the AR6A SSB-SC Microwave System (1981). |
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| == Importance of the achievement ==
| | BELL LABS - DIGITAL SIGNAL PROCESSING AND COMPUTING, 1925-1983 |
| | Bell Telephone Laboratories, Inc. introduced: the first electronic speech synthesizer (1936), first binary digital computer (1939), first long-distance computing (1940), digitized and synthesized music (1957), digital computer art (1962), text-to-speech synthesis (1962), UNIX operating system (1969), the C and S languages (1972, 1976), first single-chip digital signal processor (1979), single-chip 32-bit microprocessor (1980), 5ESS Digital Switching System (1982), and C++ language (1983). |
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| <p>Television has fulfilled the dream of instantly viewing distant objects and events. Television systems have influenced many aspects of human society enormously, including communications, entertainment, education, the arts, sports, politics, economics, science, technology, and has greatly contributed to the process of globalization. Television is now indispensable to our daily life. Professor Kenjiro Takayanagi is one of the pioneers for the development of television. He achieved most of his work independently of activities in Europe and United States of America because at the time, global communications were poor. His pioneering achievements in the development of television from 1924 – 1941 are as follows. </p>
| | BELL LABS - SOLID STATE AND OPTICAL DEVICES, 1925-1983 |
| | Bell Telephone Laboratories, Inc. introduced: the point-contact and junction transistors (1947, 1948), zone refining (1951), silicon epitaxy (1951), ion implantation (1952), solar cell (1954), oxide masking (1955), laser concept (1958), MOSFET (1959), foil electret microphone (1962), CO2 laser (1964), silicon gate (1966), heterostructure semiconductor laser (1968), charge coupled device (1969), theory of disordered states of matter (1977), heterojunction phototransistor (1980), and VLSI CMOS technology and circuits (1981). |
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| *1924 Professor Kenjiro Takayanagi started his research program of electronic television.<ref name="refnum1">A. Abramson: The History of Television, 1880 – 1941, McFarland &amp;amp; Company, p. 71, 1987</ref> He believed that an electronic television system would be popular in future. However, he began to study the television system using a mechanical camera and a Braun tube receiver as a first step.
| | BELL LABS - COMMUNICATIONS THEORY AND NETWORKS, 1925-1983 |
| *1925 He invented a high-performance Braun tube with a thermal electron<br>emission source and grids for a television receiver.<ref name="refnum2">History of the Development of Television Technology at Shizuoka University (in Japanese), Hamamatsu Promotion of Electronic Engineering, p. 23, 1987. (This book describes the history of the development of television technology at Shizuoka University including Hamamatsu Technical College from 1924 to around 1960. Professor Takayanagi’s activities in the Japan Victor Company after the war are also mentioned. Many materials relating to television technology developed by Prof. Takayanagi such as photographs of inventions (most of them were lost during the war), published papers, patents, chronological table of television technology, and etc. are included.)</ref> He employed new ideas: a thermal electron emission source instead of the traditional cold or gas discharge emission source; and grids to control electron beams, leading to a high-performance Braun cathode-ray tube (CRT) for television displays. A photograph of the Braun-Takayanagi tube is seen in Ref. [2]. Unfortunately Prof. Takayanagi did not apply for a patent for this innovation.
| | Bell Telephone Laboratories, Inc. introduced: type A facsimile service (1925), first long-distance television transmission (1927), negative feedback amplifier (1927), first stereo sound transmission (1933), Hamming error-correcting codes (1948), information theory (1948), direct distance dialing (1951), TAT-1 transatlantic telephone cable (1956), T1 transmission system (1962), touch-tone dialing (1963), 1ESS electronic switch (1965), wide area telephone 800 service (1965), and first U.S. commercial fiber-optic system (1977). |
| *1926 On December 25 he succeeded in transmitting a Japanese character character イ(i) on the Braun tube using a Nipkow disc camera.<ref name="refnum3">Abramson: The History of Television, p. 94.</ref>
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| *1927 – 1928 He improved his television system, resulting in obtaining recognizable images of a human face<ref name="refnum4">K.Takayanagi, Denki Gakkaishi (in Japanese), September 1928, pp. 932 - 942</ref>
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| *1929 - 1930 He invented a method of amplifying high-frequency radio signals.<br>and applied for patents.<ref name="refnum5">T. Nakajima and K. Takayanagi: Photocurrent amplifier, Japanese patent #104120 applied for on September 26, 1931; French patent #341003. (Photoelectric signals could be amplified by this method in a wide frequency range of 20 Hz–100 kHz, leading to the possible transmission of 20 pictures/sec with 10,000 pixels.)</ref> Prof. Takayanagi’s signal amplifier for a frequency range of 20 Hz–100 KHz indicated the possibility of transmission of 20 pictures/sec with 10,000 pixels.
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| *1930 He invented a high-vacuum Braun CRT with multiple control poles and applied for a patent.<ref name="refnum6">K. Takayanagi: Braun tube for television, applied for Japanese patent #90593 on March 28, 1930.</ref> This and the Bell Laboratories oscillograph made by AT&T’s Dr. Frank Gray were the Braun CRT with the highest performance at the time.<ref name="refnum7">Abramson: The History of Television, p. 148.</ref> On November 16, 1929, Dr. Zworykin applied for a US patent (#2,109,245) for a vacuum tube (a tube of high vacuum), so called “Kinescope”. This tube was the most important single technical advancement ever made in the history of television.<ref name="refnum8">Abramson: The History of Television, p. 145.</ref>
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| *1930 On December 27 he applied for a Japanese patent on “Transmission apparatus using an accumulating method”<ref name="refnum9">K. Takayanagi: Transmission apparatus using an integral method, applied for Japanese patent #93465 on December 27, 1930.</ref><ref name="refnum10">Abramson: The history of television, p. 161.</ref> He invented this independently of any information from Europe and the USA, although the idea of a charge storage device was quite common by this time<ref name="refnum10" />: for example, the patent of Dr. Zworykin on July 13, 1925 (U.S patent #1,691,324).
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| *1931 Prof. Takayanagi invented independently a magnetic deflection method for electron beams in a Braun CRT for television.<ref name="refnum11">Abramson: The History of Television, p. 83.</ref> He applied this to his television system, resulting in receiving most precise television pictures in the world in 1931.<ref name="refnum12">History of Television Technology (in Japanese), Japanese Television Society, Appendix p. 7, 1971. (This book describes the history of development of television technology mainly in Japan. A chronological table of the world history in the development of television technology is also included.)</ref> Although W. Rogowski and W. Grosser (Germany) built and operated a tube with magnetic focus and deflection in 1925, the Western Electric gas-focused tube probably was more stable and consistent in its operation and continued to be the most widely used oscillograph tube.<ref name="refnum11" />
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| *1931 He and his group transmitted television pictures of 10,000 elements (80 lines) at 20 frames/sec on wavelength of 84.5 meters from the radio station JOAK in Tokyo.<ref name="refnum13">Abramson: The History of Television, p. 176.</ref>
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| *1932 He invented a sawtooth wave generator using a multi-poles vacuum tube.<ref name="refnum14">History of Television Technology (in Japanese), Japanese Television Society, p. 34.</ref> A similar circuit based on this invention is applied to a moderntelevision set. Philo Farnsworth applied for a patent on a sawtooth generator on May 5, 1930 (U.S. patent #2,246,625) and the generators used in July 1929.<ref name="refnum15">Abramson: The History of Television, p. 152.</ref>
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| *1932 Prof. Takayanagi exhibited a television system using Nipkow disc and CRT at the 4th Invention Fair held in Tokyo on March 20 – April 10.<ref name="refnum16">History of development of television technology at Shizuoka University (in Japanese), p. 42.</ref>
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| *1935 He succeeded in making his first Iconoscope in October.<ref name="refnum17">History of development of television technology at Shizuoka University (in Japanese), p. 79.</ref> A photograph of Iconoscope camera made by Prof. Takayanagi is seen and the first picture transmitted by the camera is shown in Ref. [17].
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| *1935 He demonstrated an all-electronic television system on November 12.<ref name="refnum17" /><ref name="refnum18">K. Takayanagi, K. Yamaguchi, K. Matsuyama, S. Suzuki, Singakushi (in Japanese), 164, 953-958 (1936).</ref>
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| *1937 Prof. Takayanagi invented a signal generator synchronized with interlaced scanning on July 12 and applied this for the Japanese Utility Model.<ref name="refnum19">K. Takayanagi and K. Yamaguchi: Signal generation apparatus synchronized with interlaced scanning, applied for Japanese utility model #248379 on July 12, 1937.</ref> This interlaced scanning on the odd number line is also employed for a modern television set. The interlaced scanning on the odd number line was applied to his all-electronic television system, although the interlaced scanning had been applied by Randall C. Ballard (Radio Corporation of America, applied for a patent on July 19, 1932: U.S. patent #2,152,234), Fritz Schroter (Telefunken), and von Ardenne for the mechanical television system in 1932<ref name="refnum19" /> and had been employed by Philo Farnsworth (even-line interlaced), RCA (two-to-one), EMI, Ray D. Kell and Alva V. Bedford (even line interlacing system, 1935, Telefunken, and Philco.<ref name="refnum20">Abramson: The History of Television, p. 185.</ref>
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| *1939 His group at NHK (Japan Broadcasting Corporation) established country’s first television station and began broadcasting.<ref name="refnum21">Abramson: The History of Television, Chap. 9.</ref>
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| *1941 Directed by Professor Takayanagi, NHK started weekly experimental broadcasts in May and stopped at the end of June because of the war.<ref name="refnum22">History of Television Technology (in Japanese), Japanese Television Society, Appendix p. 10.</ref>
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| <p>Professor Kenjiro Takayanagi greatly influenced the Japanese government, broadcasting companies, television industries, young engineers, students at Hamamatsu Technical College (now Shizuoka University), and an academic society. He and his group began to study movable broadcasting stations for broadcasting the 12th Olympic games to be held in Tokyo in 1940 with being asked by the government and NHK in August 1936 and built them (four automobiles for broadcasting) in August 1937.<ref name="refnum23">History of development of television technology at Shizuoka University (in Japanese), p. 77; History of Television Technology (in Japanese), Japanese Television Society, p. 157.</ref> However, the stations were not used anymore since the Olympic games were halted due to the war. The Science and Technical Research Laboratories of NHK were consolidated by the reader ship of Prof. Takayanagi through the above research project. He was an active member of the Investigation Committee of Television established by the government in 1937. Prof. Takayanagi and his group were studying radar weapons and infrared image scopes based on the television technologies with being asked by the Japanese army and navy during the war.<ref name="refnum24">History of development of television technology at Shizuoka University (in Japanese), p. 138; History of Television Technology (in Japanese), Japanese Television Society, p. 160.</ref> He stimulated and directed many companies in the early stage of the development of television systems, for examples Tokyo Denki Corp. (now Toshiba), Anritu Denki Corp., Nippon Denki Corp. (NEC), and etc. for making CRTs, photo-detectors, shortwave transmitters, and etc.<ref name="refnum25">History of development of television technology at Shizuoka University (in Japanese), Chap. 2.</ref> He had many patents (120) and Japanese Utility Models (31) which were mostly licensed to NHK, Victor Company of Japan (JVC), Japan Columbia Corp., NEC, Fujitsu, and etc.<ref name="refnum26">History of development of television technology at Shizuoka University (in Japanese), p. 226 and p. 337.</ref> After he left NHK in 1946 and Hamamatsu Technical College in 1949 for JVC, he greatly influenced the government and many young engineers not only in JVC (where he led a VHS development group) but also in the Japanese Television Society as a president. He vastly contributed to the standardization and realization of practical use of television systems in Japan as leading members at the Committee for Television Technologies in 1949, the Research Committee of Television Systems in 1952, and the Research Committee of Color Television Systems in 1957.<ref name="refnum27">History of development of television technology at Shizuoka University (in Japanese), Chap. 9.</ref> His many students at Hamamatsu Technical College became leaders of R&D in television industries later such as JVC, NEC, Toshiba, Matsusita (now Panasonic), Sharp, and etc. and broadcasting companies such as NHK and etc.<ref name="refnum28">History of development of television technology at Shizuoka University (in Japanese), p. 250.</ref> One of his students founded Hamamatsu Photonics Corporation producing photon counters and electron multipliers, and now it grows up one of the major phonics companies in the world. He published 26 papers, 44 presentations, and 13 books that include a book on his philosophy for technologies and life.<ref name="refnum29">K. Takayanagi: The Beginning of Television Development (in Japanese), Yuhikaku (Tokyo), 1986. (This book understandably describes the Takayanagi’s personal history, his philosophy on technologies, and simple theories and developments of television and video recorder for young engineers, students, and general persons.)</ref> He founded the Hamamatsu Promotion of Electronic Engineering for supporting researchers of Hamamatsu Technical College in 1937 and many young researchers have been supported by the Promotion.<ref name="refnum30">History of development of television technology at Shizuoka University (in Japanese), p. 217.</ref> He also founded the Takayanagi Memorial Promotion of Electronic Science and Technology<ref name="refnum31">wwww.koueki.jp/disclosure/ta/Takayanagi</ref> in 1984 for supporting the R&D of Electronic Science and Technology, displaying television technologies, and keeping documents on the history of the development of television. The deep influence on young engineers by Prof. Takayanagi is indicated by interviews in a videotape.<ref name="refnum32">A videotape; Endless Dream in Technology – The 100th anniversary of Kenjiro Takayanagi’s birth (in Japanese), edited by Takayanagi Memorial Promotion of Electronic Science and Technology, and Victor Corporation of Japan. (Takayanagi talks about his philosophy and the processes in the development of television and video recorder (VHS) in this video. He also talks about his situation after the war. Many engineers engaged in the developments, and his students mention Takayanagi’s personality, his philosophy on technologies and the public, and words to young persons. They emphasize how they were influenced by Prof. Takayanagi. This video is being translated into English.)</ref> </p>
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| <p>A statue of Professor Kenjiro Takayanagi<ref name="refnum33">Statue of Professor Kenjiro Takayanagi in front of the Research Institute of Electronics which was founded in 1965 based on his activities in the development of television, Shizuoka University.</ref> and Takayanagi Memorial Museum<ref name="refnum34">Takayanagi Memorial Museum (founded in 1961, see below) where a prototype of his first TV system using a Nipkow disc and CRT, various Iconoscopes, CRTs, and documents on the development of television are displayed.</ref> were built on the Hamamatsu campus of Shizuoka University in commemoration of his pioneering and outstanding achievements in the development of electronic television. </p>
| | |gps=Alcatel-Lucent Bell Labs, 600 Mountain Avenue, Murray Hill, New Jersey 07974 |
| | 40.681733,-74.401559|plaque=In the entrance hall lobby|secured=The Alcatel-Lucent Bell Labs 6 lobby and the Hall of Innovation have security protection. The building lobby is accessible to the public at the milestone dedication ceremony and during business hours according to Alcatel-Lucent building security procedures.|significance=[[Bell Labs|Bell Labs]] transformed the way people communicate at work and home through the invention and development of many technical innovations that were necessary for the modern telecommunication systems and other advanced technologies. From its founding in 1925, Bell Telephone Laboratories made numerous significant contributions to telecommunications and related fields that led to the information age and the digital era. Some of these contributions include: [[Information theory|information theory]], systems engineering, digital signal processing, digital transmission and switching, data networking, cellular systems, (800) service, the [[Transistors|transistor]], solar cell, integrated circuit technology, [[Communications Satellites|communication satellites]], high capacity undersea cable, touch-tone dialing, voice and video compression, and the Unix operating system. |
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| <p>The above pioneering achievements were independently made by Professor Takayanagi and his group at Hamamatsu Technical College (now Shizuoka University). These efforts and his deep influence on engineers and students greatly advanced the technology of Japanese television and related industries, which have eventually become one of the world’s leaders. </p>
| | The following provides a brief summary description of some of the most significant innovations at [[Bell Labs|Bell Labs]] within the 1925-83 time period that are in the milestone citation. |
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| <p>Professor Kenjiro Takayanagi received many honors for his pioneering and outstanding achievements in the development of electronic television systems. Some of them are as follows. </p>
| | Information Theory was developed by Claude E. Shannon at Bell Telephone Laboratories to find fundamental limits on signal processing operations such as compressing data and on reliably storing and communicating data. It is the fundamental underpinnings of modern computer and communications technology. |
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| #Honored by the Imperial Invention Association (Japan) on April 22, 1931, August 24, 1931, April 22, 1933, and March 28, 1938.<ref name="refnum35">History of development of television technology at Shizuoka University (in Japanese), p. 292.</ref>
| | Systems engineering is the interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed over the life cycle of the project. It originated in Bell Telephone Laboratories in the 1940s for the development and implementation of complex systems. It is widely used by companies and government organizations. The NASA Apollo Project and the International Space Station are an examples of such projects using systems engineering. |
| #Honored by the Minister of Postal Services (Japan) on April 20, 1953.<ref name="refnum35" />
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| #Honored by the Electrical and Communication Society of Japan on May 9, 1953.<ref name="refnum35" />
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| #Honored by “The committee of honor of the world’s first international festival of television arts and science” in recognition of his outstanding contribution to the advance of television as a medium of international understanding at Montreux, Switzerland in May 1961.<ref name="refnum36">Honor received at the world’s first international festival of television, arts and science in 1961.</ref>
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| #Awarded the Order of Culture (the highest award for culture and science in Japan) on November 3, 1981.<ref name="refnum37">Order of Culture (the highest award for culture and science in Japan) in 1981.</ref>
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| #Made an Honorary Member of the Society of Motion Picture and Television Engineers in recognition of his long and distinguished career in the pioneering research and development of television on October 15, 1988.<ref name="refnum38">Honorary member of the Society of Motion Picture and Television Engineers in 1988.</ref>
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| == What features or characteristics set this work apart from similar achievements? ==
| | The UNIX operating System and C programming language were created at Bell Labs between 1969 and 1972. UNIX made large-scale networking of diverse computing systems - and the Internet - practical. UNIX and its spin-offs are the operating system of most large computers, Internet servers, and smart phones. The C language brought an unprecedented combination of efficiency and expressiveness to programming. C and its descendants are the most widely used programming languages in the world. |
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| <p>Scientists and engineers in various countries had developed television systems based on many technologies. In the early stages of the development of television, mechanical systems were widely studied by some of those including for example, John Logie Baird (U.K.) and Charles Francis Jenkins (USA) in the early 1920s.<ref name="refnum39">Abramson: The History of Television, Chapter 5.</ref> In 1926 Baird demonstrated television experiments using an all-mechanical system for the members of the Royal Institute (U.K).<ref name="refnum40">Abramson: The History of Television, p. 84.</ref> In United States the Bell Telephone Laboratories demonstrated the transmission of television between Washington, D. C. and New York in 1927.<ref name="refnum41">Abramson: The History of Television, p. 99.</ref> Public demonstrations of television broadcasting were carried out in Germany and France in 1928<ref name="refnum42">Abramson: The History of Television, p. 115.</ref> and 1931<ref name="refnum12" />, respectively. Professor Kawarada (Waseda University, Japan) also succeeded in television broadcasting using the mechanical system in 1929.<ref name="refnum43">History of Television Technology (in Japanese), Japanese Television Society, p. 22</ref> </p>
| | The [[Transistors|Transistor]] was invented in 1947 as a replacement for bulky and inefficient vacuum tubes and mechanical relays. The transistor revolutionized the entire electronics world. The transistor sparked a new era of modern technical accomplishments from manned space flight and computers to portable radios and stereos. As embodied in integrated circuits, it is the basic building block of modern electronics and is manufactured by the multi- billions every year. |
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| <p>However, the mechanical systems had many fundamental technical problems. Although many researchers proposed all-electrical systems, no practical systems were established until Dr. Vladimir Kosma Zworykin and his team at RCA invented the Iconoscope in 1933. While Braun cathode-ray tubes were considered for use as a receiver for an all-electrical television system in 1908 by such researchers as Professor Boris Lvovich Rosing (Russia), Alan Campbell Swinton (Great Britain), and Max Dieckmann (Germany)<ref name="refnum44">Abramson: The History of Television, p. 29.</ref>, among many others, only Rosing, Bell Telephone Labs (USA), and Max Belin and Ferdinard Holweck (France) had succeeded in transmitting a picture on this tube electrically by July 1926.<ref name="refnum45">Abramson: The History of Television, p. 87.</ref> On December 25, 1926, Professor Takayanagi also succeeded independently in transmitting a 40-line electronic picture on the Braun cathode-ray tube.<ref name="refnum46">Abramson: The History of Television, p. 94.</ref> In April 1927, he carried out successful experiments using the Braun tube, which is the first recorded use of horizontal and vertical-synchronizing pulses generated by means of a photocell.<ref name="refnum47">Abramson: The History of Television, p. 101.</ref> He transmitted his most precise television pictures (80 lines and 20 frames/sec) in 1931<ref name="refnum11" /> although P. Farnsworth was demonstrating 200 – 400 lines with at least 24 frames/sec in 1931.<ref name="refnum48">D. Godfrey and P. T. Farnsworth: The Father of Television, U. of Utah Press, 2001</ref> In 1928 – 1929, the important work on cathode ray transmitters was being done by Dr. Zworykin (Westinghouse) and Philo Farnsworth (San Francisco).<ref name="refnum49">Abramson: The History of Television, p. 146.</ref> The only other work on cathode ray receivers was that of Professor Takayanagi and Frank Gray (Bell Telephone Lab.).<ref name="refnum49" /> </p>
| | The first practical Solar cell was developed in Bell Labs in 1954. It converts the sun’s energy into electricity. It was first used on a large scale for satellites and is now an important factor in the sustainable creation of electricity. |
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| <p>Television experiments using all-electrical systems were carried out by Dr. Zworykin during the period of 1924 – 1925<ref name="refnum50">Abramson: The History of Television, p. 79.</ref> and Fornsworth on September 7, 1927<ref name="refnum51">Abramson: The History of Television, p. 105.</ref> although an Iconoscope was not built yet. On June 26, 1933, Dr. Zworykin presented a paper, “The Iconoscope – A New Version of the Electric Eye.”.<ref name="refnum52">Abramson: The History of Television, p. 198.</ref> The disclosure of the Iconoscope marked the beginning of the age of electronic television. </p>
| | Cellular systems were first proposed in 1947 Bell Labs publications. The primary innovation was the development of a network of small overlapping cell sites supported by a call switching infrastructure that tracks users as they moved through a network and pass their call from one site to another without dropping the connection. Bell Labs installed the first commercial cellular network in Chicago in the 1970s. Today, it is the basis of a rapidly growing cellular and mobile smart phone industry. |
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| <p>Professor Takayanagi began making an Iconoscope in December 1934, succeeded in making his first one in October 1935, and demonstrated an all-electronic television system in November 1935.<ref name="refnum17" /><ref name="refnum18" /> His Iconoscope employed a photoelectron emission plate covered with finely dispersed silver, which was prepared by his original method, resulting in a sensitivity of over 15 μA/lumen.<ref name="refnum18" /><ref name="refnum53">Abramson: The History of Television, p. 210.</ref> </p>
| | The first high capacity transatlantic telephone cable, which was based on innovations from Bell Labs, was deployed in 1956. |
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| <p>NHK (Japan Broadcasting Corporation) directed by Professor Takayanagi and his group established a television station in Tokyo and succeeded in broadcasting images in 1939, followed by starting public experimental broadcasting once a week using all-electrical system in May 1941.<ref name="refnum27" /> NBC (USA) started experimental television broadcasting from the Empire State building in collaboration with RCA using the Iconoscope in 1936.<ref name="refnum54">Abramson: The History of Television, p. 230.</ref> The German Post Office broadcasted the 11th Olympic games also using the Iconoscope in 1936.<ref name="refnum55">Abramson: The History of Television, p. 232.</ref> On May 12, 1937, the BBC (UK) broadcasted the coronation of George VI using Marconi-EMI television system.<ref name="refnum56">Abramson: The History of Television, p. 237.</ref> The French began television broadcasting using all-electronic system in 1938.<ref name="refnum57">History of Television Technology (in Japanese), Japanese Television Society, Appendix p. 9.</ref> The commercial development of television was practically halted around the world in about 1941 due to the war.<br> </p>
| | Bell Labs was the pioneer in communications satellites. In 1962 it built and successfully launched the first orbiting active communications satellite (Telstar I), which transmitted the first live television across the Atlantic. |
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| <p>Professor Kenjiro Takayanagi was one of the pioneers in television development not only in Japan but also in the world as shown above and A. Abramson stated in his Book.<ref name="refnum58">Abramson: The History of Television.</ref> He greatly contributed to television and television related industries in Japan with his education for young engineers and his activities for the standardization and realization of practical use of television systems at various domestic committees after the war. </p>
| | Digital transmission and electronic switching; In 1962, Bell Labs developed the first digitally multiplexed transmission of voice signals. This innovation not only created a more economical, robust and flexible network design for voice traffic, but also laid the groundwork for today's advanced network services such as 911, 800-numbers, call-waiting and caller-ID. In addition, digital networking was the foundation for the convergence of computing and communications. |
| | LASER - the invention of the laser, which stands for “Light Amplification by Stimulated Emission of Radiation,” originated in 1958 with the publication of a scientific paper by Bell Labs researchers. Lasers launched a new scientific field and opened the door to a multi-billion-dollar industry that includes applications in medicine, communications, and consumer electronics. |
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| == Refernces == | | Bell Labs built the first single-chip digital signal processor in 1979. The DSP is the engine of today's multimedia revolution. DSP technology is in multimedia PCs and in the modems that connect computers to the Internet. It's in wireless phones, answering machines, and voice-mail; it's in video games talking toys, DVD players and digital cameras.|features=|references=|support=}} |
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| == Map == | | == Map == |
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| {{#display_map:34.725319, 137.717485~ ~ ~ ~ ~Hamamatsu, Japan|height=250|zoom=10|static=yes|center=34.725319, 137.717485}} | | {{#display_map:40.684376, -74.401628~ ~ ~ ~ ~Alcatel Lucent, 600 Mountain Ave., Murray Hill, New Jersey, U.S.A.|height=250|zoom=10|static=yes|center=40.684376, -74.401628}} |
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| [[Category:Communications|Television]] [[Category:TV|Television]]
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Title
Citation
There are four plaques in order to provide space to list the achievements.
BELL LABS – WIRELESS AND SATELLITE COMMUNICATIONS, 1925-1983
Bell Telephone Laboratories, Inc. introduced: the first radio astronomical observations (1933), Smith Chart (1939), early mobile phone service (1946), cellular wireless concept (1947), TDX Microwave Radio System (1947), TD Transcontinental Microwave Radio System (1950), Telstar - first active communications satellite (1962), first observation of the cosmic background radiation (1964), first U.S. cellular wireless system (1978), digital cellular technology (1980), and the AR6A SSB-SC Microwave System (1981).
BELL LABS - DIGITAL SIGNAL PROCESSING AND COMPUTING, 1925-1983
Bell Telephone Laboratories, Inc. introduced: the first electronic speech synthesizer (1936), first binary digital computer (1939), first long-distance computing (1940), digitized and synthesized music (1957), digital computer art (1962), text-to-speech synthesis (1962), UNIX operating system (1969), the C and S languages (1972, 1976), first single-chip digital signal processor (1979), single-chip 32-bit microprocessor (1980), 5ESS Digital Switching System (1982), and C++ language (1983).
BELL LABS - SOLID STATE AND OPTICAL DEVICES, 1925-1983
Bell Telephone Laboratories, Inc. introduced: the point-contact and junction transistors (1947, 1948), zone refining (1951), silicon epitaxy (1951), ion implantation (1952), solar cell (1954), oxide masking (1955), laser concept (1958), MOSFET (1959), foil electret microphone (1962), CO2 laser (1964), silicon gate (1966), heterostructure semiconductor laser (1968), charge coupled device (1969), theory of disordered states of matter (1977), heterojunction phototransistor (1980), and VLSI CMOS technology and circuits (1981).
BELL LABS - COMMUNICATIONS THEORY AND NETWORKS, 1925-1983
Bell Telephone Laboratories, Inc. introduced: type A facsimile service (1925), first long-distance television transmission (1927), negative feedback amplifier (1927), first stereo sound transmission (1933), Hamming error-correcting codes (1948), information theory (1948), direct distance dialing (1951), TAT-1 transatlantic telephone cable (1956), T1 transmission system (1962), touch-tone dialing (1963), 1ESS electronic switch (1965), wide area telephone 800 service (1965), and first U.S. commercial fiber-optic system (1977).
Street address(es) and GPS coordinates of the Milestone Plaque Sites
, Alcatel-Lucent Bell Labs, 600 Mountain Avenue, Murray Hill, New Jersey 07974
40.681733,-74.401559
Details of the physical location of the plaque
In the entrance hall lobby
How the plaque site is protected/secured
The Alcatel-Lucent Bell Labs 6 lobby and the Hall of Innovation have security protection. The building lobby is accessible to the public at the milestone dedication ceremony and during business hours according to Alcatel-Lucent building security procedures.
Historical significance of the work
Bell Labs transformed the way people communicate at work and home through the invention and development of many technical innovations that were necessary for the modern telecommunication systems and other advanced technologies. From its founding in 1925, Bell Telephone Laboratories made numerous significant contributions to telecommunications and related fields that led to the information age and the digital era. Some of these contributions include: information theory, systems engineering, digital signal processing, digital transmission and switching, data networking, cellular systems, (800) service, the transistor, solar cell, integrated circuit technology, communication satellites, high capacity undersea cable, touch-tone dialing, voice and video compression, and the Unix operating system.
The following provides a brief summary description of some of the most significant innovations at Bell Labs within the 1925-83 time period that are in the milestone citation.
Information Theory was developed by Claude E. Shannon at Bell Telephone Laboratories to find fundamental limits on signal processing operations such as compressing data and on reliably storing and communicating data. It is the fundamental underpinnings of modern computer and communications technology.
Systems engineering is the interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed over the life cycle of the project. It originated in Bell Telephone Laboratories in the 1940s for the development and implementation of complex systems. It is widely used by companies and government organizations. The NASA Apollo Project and the International Space Station are an examples of such projects using systems engineering.
The UNIX operating System and C programming language were created at Bell Labs between 1969 and 1972. UNIX made large-scale networking of diverse computing systems - and the Internet - practical. UNIX and its spin-offs are the operating system of most large computers, Internet servers, and smart phones. The C language brought an unprecedented combination of efficiency and expressiveness to programming. C and its descendants are the most widely used programming languages in the world.
The Transistor was invented in 1947 as a replacement for bulky and inefficient vacuum tubes and mechanical relays. The transistor revolutionized the entire electronics world. The transistor sparked a new era of modern technical accomplishments from manned space flight and computers to portable radios and stereos. As embodied in integrated circuits, it is the basic building block of modern electronics and is manufactured by the multi- billions every year.
The first practical Solar cell was developed in Bell Labs in 1954. It converts the sun’s energy into electricity. It was first used on a large scale for satellites and is now an important factor in the sustainable creation of electricity.
Cellular systems were first proposed in 1947 Bell Labs publications. The primary innovation was the development of a network of small overlapping cell sites supported by a call switching infrastructure that tracks users as they moved through a network and pass their call from one site to another without dropping the connection. Bell Labs installed the first commercial cellular network in Chicago in the 1970s. Today, it is the basis of a rapidly growing cellular and mobile smart phone industry.
The first high capacity transatlantic telephone cable, which was based on innovations from Bell Labs, was deployed in 1956.
Bell Labs was the pioneer in communications satellites. In 1962 it built and successfully launched the first orbiting active communications satellite (Telstar I), which transmitted the first live television across the Atlantic.
Digital transmission and electronic switching; In 1962, Bell Labs developed the first digitally multiplexed transmission of voice signals. This innovation not only created a more economical, robust and flexible network design for voice traffic, but also laid the groundwork for today's advanced network services such as 911, 800-numbers, call-waiting and caller-ID. In addition, digital networking was the foundation for the convergence of computing and communications.
LASER - the invention of the laser, which stands for “Light Amplification by Stimulated Emission of Radiation,” originated in 1958 with the publication of a scientific paper by Bell Labs researchers. Lasers launched a new scientific field and opened the door to a multi-billion-dollar industry that includes applications in medicine, communications, and consumer electronics.
Bell Labs built the first single-chip digital signal processor in 1979. The DSP is the engine of today's multimedia revolution. DSP technology is in multimedia PCs and in the modems that connect computers to the Internet. It's in wireless phones, answering machines, and voice-mail; it's in video games talking toys, DVD players and digital cameras.
Features that set this work apart from similar achievements
Significant references
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