| 摘要 |
PURPOSE:To eliminate crosstalk components, by converting color components to a low band and inverting the phase at every 2H in every other field and recording them. CONSTITUTION:The oscillation output of 3.58MHz generated from a synchronizing signal generating circuit 1 in the cycle of 1H has the phase inverted at every 2H by an inverting circuit 13 to obtain a pilot burst signal. The output of 4.27MHz of an oscillating circuit 14 has the phase inverted at every 2H only in odd fields by an inverting circuit 15 to obtain a low-band conversion carrier. After the pilot burst signal is superposed to color components of the output signal of an image pickup tube having a color stripe filter in an 8mm. video body, they are converted to a low band by the low-band conversion carrier and are recorded. Since color components of the image pickup output are inverted at every 2H, 2H components of the carrier of color components are inverted in the cycle of 4H to eliminate crosstalk components from adjacent tracks. |
