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:
Oct. 31, 2006
Filed:
Feb. 03, 2005
Applicants:
Masashi Inao, Ibaraki, JP;
Hiroki Matsunaga, Takatsuki, JP;
Inventors:
Masashi Inao, Ibaraki, JP;
Hiroki Matsunaga, Takatsuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A band gap circuit using NPN transistors () having collectors connected to a power source voltage is employed, and transistor active regions of the NPN transistors () and semiconductor elements constituting other signal processing circuits are integrated in the same floating block () with high voltage resistance. As a result, a reference voltage circuit used in the signal processing circuit can be integrated in a compact manner.