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:
Jan. 10, 2006
Filed:
Apr. 06, 2004
Yasuhide Shimizu, Nagasaki, JP;
Hideyuki Katsuta, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Nobuhiko Yokoyama, Nagasaki, JP;
Yasuhide Shimizu, Nagasaki, JP;
Hideyuki Katsuta, Nagasaki, JP;
Yukitoshi Yamashita, Nagasaki, JP;
Nobuhiko Yokoyama, Nagasaki, JP;
Sony Corporation, Tokyo, JP;
Abstract
A differential amplifier has an in-phase input terminal to which an input signal is applied through a first switching unit, an anti-phase input terminal to which a reference signal is applied through a second switching unit, and a third switching unit between the in-phase and anti-phase input terminals. The potential difference between the in-phase and anti-phase input terminals is differentially amplified by setting the first and second switching units to be on and the third switching unit to be off. Also, the in-phase and anti-phase input terminals are short-circuited to have a high impedance by setting the first and second switching units to be off and the third switching unit to be on.