| 摘要 |
PURPOSE:To reproduce a normal color picture with less deterioration for any video signal having different fields on the way of one line, by performing a chromatic inversion to an input added with redundant data so as to reserve the continuity of a color subcarrier phase. CONSTITUTION:An input video signal of A, B, C channels is given to a point (p) in the variable speed reproduction of a digital VTR recorded in three channels. A redundant data adding circuit 1 forms a signal at a point (q) where the redundant data is added to the last of a video signal A of the beginning of a video signal C, and a signal at a point (r) where the redundant data is added to the beginning and end of a video signal B. Further, the redundant data is produced so that the phase of the color subcarrier is continuous. These data are inputs to chromatic inverters 2, 3. Then, a switch 4 selects an output of the two chromatic inverter and obtains a signal at a point (s) where the chromatic inversion is attained. On the other hand, a signal at a point (t) delayed at a delay circuit 5 is selected by a switch 6 and a video signal at a point (u) is obtained, where the phase of color subcarrier is continuous. |
