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. 09, 2002
Filed:
Oct. 18, 2001
Applicant:
Inventors:
Takashi Hirata, Osaka, JP;
Hironori Akamatsu, Osaka, JP;
Satoshi Takahashi, Osaka, JP;
Yoshihide Komatsu, Osaka, JP;
Yutaka Terada, Osaka, JP;
Hirokazu Sugimoto, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/153 ;
U.S. Cl.
CPC ...
H03K 5/153 ;
Abstract
In the circuit for detecting the voltage level of an analog signal, a conversion circuit converts an analog signal to digital signals by comparing the voltage level of the analog signal with a plurality of reference potentials. A filter circuit matches timings of at least either rising edges or falling edges of the digital signals with each other. This prevents malfunction in the voltage level detection.