Signal storage time control system of photoelectric converting means

Abstract

Abstract PURPOSE:To shorten the storage time of a photoelectric converting element and to improve the responding properties of a processor, etc., by setting the 1st mode at a normalstate and setting the 2nd control mode different from the 1st control mode when the time of signal storage is too long for the quantity of incident light. CONSTITUTION:A signal storage type photoelectric converting means CCD 6 is provided with three photodetection parts 6'-6'', and a series of clock signals from a clock driver CLKD is used to store, transfer, and reset charges. A video signal read out of this CCD 6 is applied to a balance adjusting ciruit BA, whose output is sampled according to the timing of a timing generator TMGE to measure the quantity of incident light by a differential amplifier DIF. The measuement result is compared with reference voltages VA and VB by the 1st and 2nd comparators COMPA and COMPB to control a storage time control circuit AGC on the basis of the comparison results, and the output of the TMGE is placed in different mode from normal mode when the time of signal storage is too long for the quantity of incident light.

Inventors

• 👤 Shinji Sakai
• 👤 堺　信二
• 👤 Nobuhiko Shinoda
• 👤 篠田　信比古
• 👤 Takao Kinoshita
• 👤 貴雄 木下
• 👤 Mitsuya Hosoe
• 👤 細江　三弥

Bibliographic Details