| 摘要 |
PURPOSE:To enable to reproduce a TV signal by a specified viewer with a color burst set in a mode different from the standard system, by installing a specified color burst reproducing circuit. CONSTITUTION:The signal of the desired channel is selected by the tuner 19 among the TV signals having the specified type and then detected by the wave detecting circuit 20. The color burst signal is eliminated out of the received TV signal through the burst eliminating circuit 22. On the contrary, the color burst is extracted through the burst gate 23 and then applied to the switch circuit 25 after an inversion of polarity given through the polarity inverting circuit 24. The burst newly produced is extracted from the circuit 25 and then inserted into the TV signal via the burst inserting circuit. After this, the TV signal of the standard system is reproduced. |
