AUTO LIGHT CONTROL APPARATUS AND METHOD OF VIDEO CAMERA

摘要

a photographing section (10) which converts a light information to an electrical signal; an image signal processing section (20) which detects a brightness signal; a gating section (30) which detects a quantity of brightness signal at the center of frame by using a gating pulse; a brightness level detecting sections (40-60) which filter the gating output and converts it to a digital signal; and a control section (70) which compares the converted signal with a reference level and controls the shutter speed.