| 单词 | flying-spot scanner |
| 释义 | > as lemmasflying-spot scanner i. flying spot: a small spot of light that is made to move rapidly over an object, the reflected or transmitted light from successive parts of it being converted by a photo-electric tube or cell into an electrical signal that can be made to reproduce an image of the object. Usually attributive, as flying-spot scanner, flying-spot scanning. ΘΚΠ society > communication > broadcasting > television > visual element > [noun] > scanning, etc. scanning1927 scanning spot1929 flying spot1933 interlacing1935 line scanning1935 interlace1936 line scan1938 matrixing1951 line blanking1952 the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [noun] > spotlight > flying spot (scanning or scanner) flying spot1933 1933 Television Oct. 342/1 The transmitter utilises the principle of indirect or ‘flying spot’ scanning by means of an aperture disc. 1960 How TV Works vi. 34/2 For many purposes..reproduction of higher quality is achieved by means of a ‘flying spot’ machine in which each frame of an ordinary positive film is rapidly scanned by a flying spot of light. 1965 Math. in Biol. & Med. (Med. Res. Council) iv. 192 The focus and intensity controls and high-voltage supplies are associated with the 1·5-mil-spot cathode ray tube that produces the short-persistence flying spot, with a sweep diameter of 10 cm. 1968 Brit. Med. Bull. 24 191/2 They are scanned line by line (television-wise) by a ‘flying-spot scanner’. < as lemmas |
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