| 摘要 |
PURPOSE:To obtain continuously X-ray pictures from an X-ray TV signal for monitoring by controlling the read-out of electric charge on an image pickup tube from outside synchronously with the X-ray exposure, and storing the X-ray pictures to a memory based the read-out electric charge. CONSTITUTION:A timing control part 41 within a picture display input control part 31 starts reading out the electric charge from a time point when the generation is through with the pulse X rays and outputs the shift pulse to an X- ray TV camera 30. The signal S6 read out of the cameral 30 is stored to a memory part 43 after an A/D conversion 42. While the part 41 outputs a vertical/ horizontal scan signal S8 to an X-ray TV monitor 9 and simultaneously reads out the picture data stored in the part 43 synchronously with the field operation of the monitor 9 to transmit it to the monitor 9. If the number of times of generation of pulse X rays per second is larger than the number of fields of the monitor 9, thinning-out is displayed. While a multiplex display is executed if said generating frequency is smaller than said number of fields. |
