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.
Patent No.:
Date of Patent:
Jul. 30, 2013
Filed:
Mar. 30, 2012
Shinichirou Etou, Nagasaki, JP;
Yasuhide Shimizu, Nagasaki, JP;
Kouhei Kudou, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Shinichirou Etou, Nagasaki, JP;
Yasuhide Shimizu, Nagasaki, JP;
Kouhei Kudou, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Sony Corporation, Tokyo, JP;
Abstract
An AD converter includes: AD conversion stages configured to generate digital data having a value corresponding to a relationship between two analog signals being input and amplifying two analog residual signals with a first amplifier and a second amplifier with gain to be controlled to output the signals; and a gain control part configured to control gain of the first amplifier and the second amplifier on the basis of a monitoring result of the output signals of the first amplifier and the second amplifier. The first amplifier and the second amplifier are formed of open-loop amplifiers, and the gain control part takes out amplitude information of the output signals of the first amplifier and the second amplifier in at least one of the AD conversion stages and performs gain control so that amplitude of the analog signals being output from the stage converges on setting amplitude being set.