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1 Dolby, Ray M.
[br]b. 1933 Portland, Oregon, USA[br]American electronics engineer who developed professional systems for noise reduction.[br]He was employed by Ampex Corporation from 1949 to 1957 and received a BSc in electrical engineering from Stanford University in 1957. He studied in England and received a PhD in physics from Cambridge University in 1961. He was a United Nations adviser in India 1963–5 and established the Dolby Laboratories in London in 1965. The Dolby Laboratories continuously developed systems for background-noise reduction, and in 1966 introduced Dolby A for professional tape and film formats. In 1968 Dolby B was developed and quickly found its use in the Philips Compact Cassette, which had become the new consumer medium for music. In 1981 Dolby C was an improvement designed for the consumer market, but it also was used in professional video equipment. In 1986 Dolby SR was introduced for professional sound recording. It is a common feature that the equipment has to be in a good state of calibration in order to obtain the advantages of these compander systems.[br]Principal Honours and DistinctionsOBE 1986.GB-N -
2 dolby
m.Dolby, Ray M. Dolby.* * *1 Dolby* * *dolby® nm invDolby®;grabado con dolby recorded with Dolby® -
3 Electronics and information technology
See also: INDEX BY SUBJECT AREA[br]Byron, Ada AugustaNapier, JohnRiche, Gaspard-Clair-François-MarieSchickhard, WilhelmBiographical history of technology > Electronics and information technology
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4 Recording
See also: INDEX BY SUBJECT AREA[br] -
5 system
1) система || системный3) вчт операционная система; программа-супервизор5) вчт большая программа6) метод; способ; алгоритм•system halted — "система остановлена" ( экранное сообщение об остановке компьютера при наличии серьёзной ошибки)
- CPsystem- H-system- h-system- hydrogen-air/lead battery hybrid system- Ksystem- Lsystem- L*a*b* system- master/slave computer system- p-system- y-system- Δ-system -
6 indicator
1) индикатор, указатель3) сигнал•- Add Toner indicator
- alarm indicator
- alphameric indicator
- alphanumeric indicator
- alternative routing indicator
- AMTS indicator
- analog/digital indicator
- antenna indicator
- audio indicator
- auxiliary service indicator
- bar indicator
- bar-graph indicator
- battery remaining indicator
- Blank indicator
- built-in data indicator
- cable-fault indicator
- Calibration indicator
- call indicator
- call-in-absence indicator
- cathode-ray indicator
- cathode-ray tube indicator
- challenge indicator
- channel indicator indicator
- character indicator
- charge indicator
- Check Display indicator
- check indicator
- clearing indicator
- common-anode digital indicator
- common-cathode digital indicator
- communication zone indicator
- Connection Establishment indicator
- Conversation indicator
- CRT indicator
- Detail indicator
- dial indicator
- digit indicator
- digital indicator
- discharging indicator
- Dolby B, C, N, R indicator
- drop indicator
- duplicate-message indicator
- Edit A/B indicator
- electrovacuum indicator
- Error indicator
- Extra indicator
- failure indicator
- failure warning indicator
- Fax Answer indicator
- filament indicator
- Fine indicator
- fixed-scale indicator
- flag indicator
- frequency indicator
- fuse indicator
- fusion-type indicator
- ground indicator
- HF-power indicator
- HX PRO indicator
- In Use indicator
- In Use/Charge indicator
- input signal receiving indicator
- input signal transmitting indicator
- ion indicator
- ionic indicator
- letter-digital indicator
- light emitting diode indicator
- Lighter indicator
- line indicator
- luminescent indicator
- malfinction indicator
- Manual indicator
- message indicator
- message-waiting indicator
- missed-call indicator
- MPX filter indicator
- n-digit indicator
- neon indicator
- NO PAPER indicator
- null indicator
- one-pole voltage indicator
- Operation indicator
- overload indicator
- PAPER OUT indicator
- Peak Level Meter indicator
- Power indicator
- Power-Saving indicator
- Privacy indicator
- Program indicator
- Receive File indicator
- Recharge indicator
- remote indicator
- Repeat indicator
- RF indicator
- ring indicator
- ring-off indicator
- routing indicator
- scale indicator
- semiconductor indicator
- single-digit indicator
- standing-wave indicator
- status indicator
- Super indicator
- supervisory indicator
- Talk indicator
- Tape Counter indicator
- Tape Position indicator
- Tape Type indicator
- temperature indicator
- thermal indicator
- Track indicators
- tubular indicator
- two-digit indicator
- two-pole voltage indicator
- unanswered-call indicator
- vacuum indicator
- voice-mail indicator
- voltage indicator
- volume indicator
- window-annunciator indicator
- zero indicatorEnglish-Russian dictionary of telecommunications and their abbreviations > indicator
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7 Poniatoff, Alexander Mathew
[br]b. 25 March 1892 Kazan District, Russiad. 24 October 1980[br]Russian (naturalized American in 1932) electrical engineer responsible for the development of the professional tape recorder and the first commercially-successful video tape recorder (VTR).[br]Poniatoff was educated at the University of Kazan, the Imperial College in Moscow, and the Technische Hochschule in Karlsruhe, gaining degrees in mechanical and electrical engineering. He was in Germany when the First World War broke out, but he managed to escape back to Russia, where he served as an Air Force pilot with the Imperial Russian Navy. During the Russian Revolution he was a pilot with the White Russian Forces, and escaped into China in 1920; there he found work as an assistant engineer in the Shanghai Power Company. In 1927 he immigrated to the USA, becoming a US citizen in 1932. He obtained a post in the research and development department of the General Electric Company in Schenectady, New York, and later at Dalmo Victor, San Carlos, California. During the Second World War he was involved in the development of airborne radar for the US Navy.In 1944, taking his initials to form the title, Poniatoff founded the AMPEX Corporation to manufacture components for the airborne radar developed at General Electric, but in 1946 he turned to the production of audio tape recorders developed from the German wartime Telefunken Magnetophon machine (the first tape recorder in the truest sense). In this he was supported by the entertainer Bing Crosby, who needed high-quality replay facilities for broadcasting purposes, and in 1947 he was able to offer a professional-quality product and the business prospered.With the rapid post-war boom in television broadcasting in the USA, a need soon arose for a video recorder to provide "time-shifting" of live TV programmes between the different US time zones. Many companies therefore endeavoured to produce a video tape recorder (VTR) using the same single-track, fixed-head, longitudinal-scan system used for audio, but the very much higher bandwidth required involved an unacceptably high tape-speed. AMPEX attempted to solve the problem by using twelve parallel tracks and a machine was demonstrated in 1952, but it proved unsatisfactory.The development team, which included Charles Ginsburg and Ray Dolby, then devised a four-head transverse-scan system in which a quadruplex head rotating at 14,400 rpm was made to scan across the width of a 2 in. (5 cm) tape with a tape-to-head speed of the order of 160 ft/sec (about 110 mph; 49 m/sec or 176 km/h) but with a longitudinal tape speed of only 15 in./sec (0.38 m/sec). In this way, acceptable picture quality was obtained with an acceptable tape consumption. Following a public demonstration on 14 April 1956, commercial produc-tion of studio-quality machines began to revolutionize the production and distribution of TV programmes, and the perfecting of time-base correctors which could stabilize the signal timing to a few nanoseconds made colour VTRs a practical proposition. However, AMPEX did not rest on its laurels and in the face of emerging competition from helical scan machines, where the tracks are laid diagonally on the tape, the company was able to demonstrate its own helical machine in 1957. Another development was the Videofile system, in which 250,000 pages of facsimile could be recorded on a single tape, offering a new means of archiving information. By 1986, quadruplex VTRs were obsolete, but Poniatoff's role in making television recording possible deserves a place in history.Poniatoff was President of AMPEX Corporation until 1955 and then became Chairman of the Board, a position he held until 1970.[br]Further ReadingA.Abrahamson, 1953, "A short history of television recording", Part I, JSMPTE 64:73; 1973, Part II, Journal of the Society of Motion Picture and Television Engineers, 82:188 (provides a fuller background).Audio Biographies, 1961, ed. G.A.Briggs, Wharfedale Wireless Works, pp. 255–61 (contains a few personal details about Poniatoff's escape from Germany to join the Russian Navy).E.Larsen, 1971, A History of Invention.Charles Ginsburg, 1981, "The horse or the cowboy. Getting television on tape", Journal of the Royal Television Society 18:11 (a brief account of the AMPEX VTR story).KF / GB-NBiographical history of technology > Poniatoff, Alexander Mathew
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