Abstract
Noise* is a source of impairment in any form of information transmission system. In a television picture it is the fluctuating granular structure resulting from random brightness variations which is superimposed on the picture elements. — Although a video signal from a TV camera always contains noise, the signal-to-noise ratio prevailing in modern equipment is of such value that impairment of picture quality is minimal. At present, a major portion of television programing is the replay of video tape recorded from a TV camera output. The level of noise generated in the video-tape recorder and its video transmission characteristics which influence the original noise structure of a TV camera output are important elements in maintaining the high standard of TV picture quality. — Origin of noise in TV camera equipment, fundamental characteristics of an FM system used in a contemporary video recorder, and the potential sources of video noise associated with the video recording/replay process are discussed.
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