| 摘要 |
PURPOSE:To ensure the proper compensation for each color, by varying the zooming value and the iris value of a lens plus the output level of the video signal corresponding to the luminous intensity of a subject to the values of each varying range to store them into a memory and then reading out the contents of the memory to feed it to an image pickup tube in the operation mode. CONSTITUTION:Both the zooming value and the iris values of a lens L of a 3- tube color TV camera CAM are stored into a variable memory of a control part CT via potentiometers RV1 and RV2 respectively. At the same time, the registration compensating control voltages VR1-VRn, VG1-VGni and VB1-VBn corresponding to each value within the varying range at the video signal output level which is given from a deflecting circuit DEF and corresponding to the luminous intensity of a subject are stored in a variable memory with each color. Then the contents of the variable memory are read out by a processor at the control part CT in the operation mode to be synthesized for each color. The deflecting control voltages CR1-CRn, CG1-CGn and CB1-CBn corresponding to the image pickup tubes of each color are applied to the circuit DEF to perform the proper compensation for each color. |
