Title:
アナログ処理回路およびアナログ集積回路装置および画像読取装置および画像形成装置
Document Type and Number:
Japanese Patent JP4699417
Kind Code:
B2
Abstract:
A first clamping unit clamps a base voltage of an input image signal to a predetermined reference voltage. A sampling-and-holding unit samples and holds the image signal after clamping or a reference signal that becomes the base voltage of the image signal. An amplifying unit amplifies the image signal sampled and held by the sampling-and-holding unit. An analog-to-digital converting unit converts the image signal after amplification into a digital image signal. A second clamping unit clamps the reference signal to a predetermined voltage.
Inventors:
Nakazawa Masamoto
Toru Kanno
Toru Kanno
Application Number:
JP2007107133A
Publication Date:
June 08, 2011
Filing Date:
April 16, 2007
Export Citation:
Assignee:
株式会社リコー
International Classes:
H04N1/028
Domestic Patent References:
| JP5316338A | ||||
| JP2007019764A | ||||
| JP2006314039A | ||||
| JP2006229527A |
Attorney, Agent or Firm:
Kei Osawa
Yutaka Osawa
Yutaka Osawa