| 摘要 |
PURPOSE:To obtain a slow motion picture image having no noisebar free from adjustment by providing a noise phase detecting means for detecting a noise position of a reproducing signal from a magnetic tape and outputting a pulse displaying the noise position corresponding in a reproduced picture plane. CONSTITUTION:Since a noise is detected from an envelope signal a by a noise detector 11 and a pulse c is generated, a frame feed circuit 17 is operated by the pulse c. A crawling driving signal f outputted from the circuit 17 is fed to a driving circuit 21 through an AND gate 16 to carawling drive a capstan 14. When the pulse c is not outputted from the circuit 11, the circuit 17 stops the output of the crawling driving signal f thereby the capstan 14 stops. In this manner, there is no noise bar on a reproducing picture plane, and thereafter, the circuit 17 outputs an accelerating pulse d and a brake pulse a again, and a magnetic tape 1 is intermittently fed. This operation is repeated and a slow motion reproduction is carried out.
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