Sir Isaac Shoenberg (1 March 1880 – 25 January 1963) was a British electronic engineer born in Belarus who was best known for his role in the history of television. He was the head of the EMI research team that developed the 405-line (Marconi-EMI system), the first fully electronic television system to be used in regular broadcasting when it was introduced with the BBC Television Service in 1936.[1] It was later adopted by other TV organizations around the world.[2]
Shoenberg was born on 1 March 1880 to Jewish parents in Pinsk, Imperial Russia (now Belarus) and studied mathematics, mechanical engineering and electricity in St. Petersburg.[2]
With his wife Esther, Shoenberg was the father of the British physicist David Shoenberg, the gynaecologist Rosalie Shoenberg Taylor, the psychiatrist Elisabeth Shoenberg,[4] Mark Shoenberg and Alec Shoenberg.
Career
In 1905, Shoenberg was employed to design and install the earliest wireless stations in Russia. However, in 1914, Shoenberg decided to emigrate to London and join the Marconi Wireless and Telegraph Company. In 1919, he became a British subject and, in 1924, he became Marconi's joint general manager.[2]
Shoenberg's team applied in 1932 for a patent for a new device they dubbed "the Emitron",[5] which formed the heart of the cameras they designed for the BBC.
In 1934, EMI formed a new company with Marconi with a research team led by Shoenberg which, with access to patents developed by Vladimir Zworykin and RCA, made significant contributions to the development of television including developing the electronic Marconi-EMI system, the world's first electronic high-definition television system.[2]
CPS Emitron television camera
Shoenberg's team analysed how the iconoscope (or Emitron) produces an electronic signal and concluded that its real efficiency was only about 5% of the theoretical maximum.[6][7] They solved this problem by developing and patenting in 1934 two new camera tubes dubbed super-Emitron and CPS Emitron.[8] The super-Emitron was between ten and fifteen times more sensitive than the original Emitron and iconoscope tubes and, in some cases, this ratio was considerably greater.[6]
The same year, the British government set up a committee (the "Television Committee") to advise on the future of TV broadcasting. The committee recommended that a "high definition" service (defined by them as being a system of 240 lines or more) to be run by the BBC be established. The recommendation was accepted and tenders were sought from industry. Two tenders were received: one from the Baird company offering a 240-line mechanical system, and the other from EMI offering a 405-line all-electronic one employing the Emitron. The Television Committee advised that they were unable to choose between the two systems and that both tenders should be accepted, the two systems to be run together for an experimental period.
Broadcasting of the resulting BBC Television Service from its Alexandra Palace site began on 2 November 1936, at first time-sharing broadcasts with the 240-line Baird system. However, in January 1937, after three months of trials, the Baird system was abandoned in favour of exclusive broadcasting with the 405-line Marconi-EMI system on VHF, which was more reliable and visibly superior.[9] This was the world's first regular high-definition television service and became the standard for all British TV broadcasts until the 1960s.[10] It was later adopted by other TV organisations around the world.[2] The Emitron was used for the first outside broadcasting, at the televising of the Coronation of George VI and Elizabeth by the BBC in May 1937.[11]
Schoenberg was portrayed by Leon Lissek in the 1986 TV movie The Fools on the Hill by Jack Rosenthal which dramatised the events around the first broadcasts by the BBC from Alexandra Palace in 1936.
^ ab"Early stereo recordings restored". BBC News. 1 August 2008. Archived from the original on 7 August 2008. Retrieved 7 August 2008. Blumlein lodged the patent for 'binaural sound', in 1931, in a paper which patented stereo records, stereo films and also surround sound. He and his colleagues then made a series of experimental recordings and films to demonstrate the technology, and see if there was any commercial interest from the fledgling film and audio industry.
^Joyce, Joyce (3 November 2005). "Elisabeth Shoenberg: Conscientious pioneer of psychodynamic therapy". The Guardian.
^Tedham, William F.; McGee, James D. "Improvements in or relating to cathode ray tubes and the like". Patent No. GB 406,353 (filed May 1932, patented 1934). United Kingdom Intellectual Property Office. Retrieved 22 February 2010. - Tedham, William F.; McGee, James D. "Cathode Ray Tube". Patent No. 2,077,422 (filed in Great Britain 1932, filed in USA 1933, patented 1937). United States Patent Office. Retrieved 10 January 2010.
^Burns, R. W., Television: An international history of the formative years. (1998). IEE History of Technology Series, 22. London: IEE, p. 576. ISBN0-85296-914-7.
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