| 单词 | luminance signal |
| 释义 | > as lemmasluminance signal b. Television. The component of a television signal which carries information on the brightness of the image. Also luminance signal. Cf. chrominance n. ΘΚΠ society > communication > broadcasting > television > visual element > [noun] > signals, types, or parts of picture frequency1926 picture signal1927 black level1935 line frequency1936 pedestal1937 line scan1938 picture black1938 white level1938 porch1941 test signal1945 spot wobble1950 luminance1953 society > communication > broadcasting > television > visual element > [adjective] > signals, types, or parts of line-synchronizing1935 line-sync1940 luminance1953 1953 Electronics Dec. 139/3 The term ‘chrominance’ refers to two signals which carry color information. These signals, when added to the luminance signal, provide the hue and saturation components of the color image. 1957 V. J. Kehoe Technique Film & Television Make-up viii. 95 As to..the reception of a color telecast on a monochromatic receiver, only the luminance portion will be supplied to the single electron gun in the monochrome tube to produce a black-and-white version of the signal. 1973 Sci. Amer. May 118/2 Here there is an analogy with color television, in which the luminance—the three-color sum—is transmitted separately, along with two color-difference signals, rather than three color signals directly. 1983 E. Trundle Beginner's Guide Videocassette Recorders ii. 21 If we regard the FM luminance spectrum as extending from 1 MHz to 6 MHz, it is now occupying less than three octaves. 1990 OnSat 29 July–4 Aug. 8/2 The luminance signal is markedly increased (from a low of 3.4 MHz to a high range of 5.4 to 7.0 MHz) and separated from the chrominance signal (color) through special Y/C input and output connectors. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。