The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 27, 2011

Filed:

Jul. 22, 2010
Applicants:

Michael Choi, Seoul, KR;

Ho-jin Park, Suwon-si, KR;

Eun-seok Shin, Hwaseong-si, KR;

Kyoung-jun Moon, Hwaseong-si, KR;

Seung-hoon Lee, Seoul, KR;

Kyung-hoon Lee, Seoul, KR;

Young-ju Kim, Seoul, KR;

Se-won Lee, Seoul, KR;

Beom-soo Park, Seoul, KR;

Inventors:

Michael Choi, Seoul, KR;

Ho-jin Park, Suwon-si, KR;

Eun-seok Shin, Hwaseong-si, KR;

Kyoung-jun Moon, Hwaseong-si, KR;

Seung-hoon Lee, Seoul, KR;

Kyung-hoon Lee, Seoul, KR;

Young-ju Kim, Seoul, KR;

Se-won Lee, Seoul, KR;

Beom-soo Park, Seoul, KR;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A multistage amplifying circuit includes a first amplifying circuit that either samples a first analog voltage input or amplifies a difference between the first analog voltage and a first digital voltage converted from the first analog voltage, in response to a control signal. A second amplifying circuit either samples a second analog voltage input or amplifies a difference between the second analog voltage and a second digital voltage converted from the second analog voltage, in response to the control signal. A common amplifier receives output voltages of the first amplifying circuit and the second amplifying circuit and either resets the output voltage of the first amplifying circuit and determines an output voltage by using the second amplifying circuit, or resets the output voltage of the second amplifying circuit and determines an output voltage by using the first amplifying circuit, in response to the control signal.


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