| 摘要 |
PURPOSE:To decrease the noise bar caused at the time of the search in VTR by inserting the filter limiting the band to the rear of the limiter in order to remove the amplitude variation. CONSTITUTION:The luminance FM signal, which is reproduced from the magnetic tape and is processed by the reproducing equivalent circuit, AGC, etc., is inputted to the terminal 51. The filter 54 limiting the band is inserted to the rear of the inversion prevention circuit 15 connected to the terminal 51 and the limiter 52 removing the amplitude variation. The white jump of the noise bar caused at the time of the search is set to the gray level by inserting the filter 54. In this way, the reproduction picture, which is hard to see the noise visually, can be obtained. As such, the noise bar caused at the time of the search in VTR can be decreased. |
