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. 22, 2008
Filed:
Jan. 20, 2005
Applicant:
Yoshiyuki Hojo, Kyoto, JP;
Inventor:
Yoshiyuki Hojo, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/613 (2006.01); G05F 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
After a current value flowing through a coil L is detected, it is converted into a voltage value, is then inputted to an inverting input terminal of a comparator, and is then compared with a voltage indicating the difference between the value of a fed back output voltage and a reference voltage. A voltage sourceis provided at the inverting input terminal of the comparatorso that an offset voltage is added to the voltage value to be inputted to the inverting input terminal of the comparator