Timing pulse generator driving CCD sensor of majority at once in CCD video camera which is able to multi-devision photogrphing

摘要

PURPOSE: A timing pulse generator for driving plurality of CCD sensors of a video camera of multi division picture capability simultaneously is provided to drive plurality of CCD sensors at a time. CONSTITUTION: A timing pulse generator for driving a plurality of CCD(charge coupled device) sensors of a video camera of multi division picture capability simultaneously includes a clock(43), a divider(44), a scan method selector(45), an illumination detector(40), an up/down counter(41), a timing pulse generator(50), and a counter(51,53). The clock(43) generates reference clock frequency. The divider(44) divides the clock frequency into two and assembles the divided result into a predetermined signal. The scan method selector(45) selects the scanning type. The illumination detector(40) detects the illumination detected from the CCD sensor. The up/down counter(41) up-counts/down-counts the clock frequency according to the signal from the illumination detector. The timing pulse generator(50) generates various timing pulses according to the output of the up/down counter. The counter(51,53) counts the clock frequency to adjust the illumination of the CCD sensor.