| 摘要 |
PURPOSE:To apply feature while dividing an overlapping optionally an image plane such as mirror image plane by adopting the constitution that at least one of a horizontal deflection control circuit and a vertical deflection control circuit is designed to change its output waveform optionally. CONSTITUTION:A video camera 10 is provided with a horizontal deflection coil 18 controlling the scanning of an electron beam 15, a horizontal deflection control circuit 19 applying a horizontal deflection current, a vertical deflection coil 20 and a vertical deflection control circuit 21 applying the vertical deflection current thereto. Then the circuit, e.g., 19 is provided with a microcomputer 22, a programmable up-down counter 23 whose output count number is changed according to the output data of the computer 22 and a D/A converter 24 converting the output into an analog quantity. Thus, the waveform of the horizontal scanning current outputted from the circuit 19 and the waveform of the vertical scanning current outputted from the circuit 21 or one of them is changed to change the scanning position and direction of the electron beam 15 to apply feature. |
