US Patent 7601939 Solid-state image-pickup device with column-line amplifiers and limiter

Patent 7601939 was granted and assigned to Sony on October, 2009 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Sony

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76019390

Patent Inventor Names

Ken Koseki0

Date of Patent

October 13, 2009

Patent Application Number

119800160

Date Filed

October 30, 2007

Patent Primary Examiner

‌

Thanh X. Luu

Patent abstract

The levels of the power supply and the ground are kept constant against a parasitic resistance by keeping the constant current of an amplifier irrespective of the size of a pixel signal and the gain of the amplifier in this case in an image signal reading circuit system having the amplifier arranged to each column. The amplifier has a limiter at an output terminal thereof which limits an output voltage of the amplifier to a range for keeping the constant consumption-current.

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