H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/32
H04N 5/262 (2006.01)
Patent
CA 1131348
ABSTRACT OF THE DISCLOSURE Disclosed is a television strobe effects system in which position information representing the position of a moving object included in a television picture is extracted either from the input video signal or from a sample-to-sample comparison be- tween every two successive frames or fields of the input video signal. The write-in of the input video signal in a one-frame or one-field picture memory is controlled in response to the position information so that the write-in for each frame of the input video signal is prohibited at those addresses of the memory which correspond to the position of the moving objects. This permits the signal segment representative of the moving object to replace, for each frame, the input video signal segment at the corresponding addresses of the picture memory, while allowing other portions of the input video signal to be stored in the memory unaltered. When successively read out at a standard tele- vision scanning rate, the picture memory provides a video signal including in each frame the moving-object-representing signal segment, thereby giving the desired strobe effect. In contrast to the conventional system of this kind, which has a memory for the frame-to-frame difference signal separated from the picture memory, the present invention requires only one picture memory, with the difference signal being used only for the extraction of the position information.
327893
Inaba Masao
Isomura Yukihiko
Ito Yutaka
Kato Katsuhisa
Takahashi Hiroshi
Nippon Electric Co. Ltd.
Smart & Biggar
Tokyo Broadcasting System Inc.
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