Patent ID: 7692693
Filing Date: 2010-04-06
Classification: H04N

Abstract:
1. An imaging apparatus comprising: an imaging device that has high sensitive main pixels and low sensitive sub pixels, to take analogue main pixel image signals from electric charges stored in said main pixels, and analogue sub pixel image signals from electric charges stored in said sub pixels; an analogue signal processing device that amplifies or attenuates said analogue main pixel image signals and/or said analogue sub pixel image signals, to put signal values of said analogue main pixel image signals and said analogue sub pixel image signals substantially in the same range; an A/D converter for converting said analogue main pixel image signals and said analogue sub pixel image signals, after being amplified or attenuated in said analogue signal processing device, to main pixel data and sub pixel data respectively; and an image composition device for composing said main and sub pixel data to generate composite image data, wherein said analogue signal processing device comprises an attenuator for attenuating said analogue main pixel image signals or said analogue sub pixel image signals, to put signal values of said analogue main pixel image signals and said analogue sub pixel image signals substantially in the same range; and an amplifier for amplifying said analogue main pixel image signals and said analogue sub pixel image signals, after having the signal values put in the same range, with a predetermined gain.