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:
Feb. 21, 2012
Filed:
Jan. 18, 2007
Yasuhide Shimizu, Nagasaki, JP;
Shigemitsu Murayama, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Junji Toyomura, Nagasaki, JP;
Yasuhide Shimizu, Nagasaki, JP;
Shigemitsu Murayama, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Junji Toyomura, Nagasaki, JP;
Sony Corporation, Tokyo, JP;
Abstract
A comparator includes a sampling capacitor, a first switching unit which is connected to an input end of the sampling capacitor and which applies an input signal to the input end of the sampling capacitor, a second switching unit which is connected to the input end of the sampling capacitor and which applies a reference signal to the input end of the sampling capacitor, an output transistor connected to an output end of the sampling capacitor in a source follower connection manner or an emitter follower connection manner, and a third switching unit which is connected to an output end of the sampling capacitor and which maintains maintaining a voltage at the output end of the sampling capacitor to be constant. The input signal is compared with the reference signal.