Endoscope apparatus and method for obtaining properly dimmed observation images

摘要

A sensitivity control unit supplies a sensitivity control signal to a charge coupled device (CCD) driver circuit for generating pulse signal for controlling a charge multiplication factor of a CCD-type image pick-up element, based on the determined intensity of light signal. An aperture controller controls the aperture unit based on the intensity signal corrected based on the charge multiplication factor. An independent claim is also included for signal processing method.