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. 03, 2009
Filed:
May. 07, 2007
Applicants:
Yoshikazu Sasaki, Kyoto, JP;
Tetsuro Hashimoto, Kyoto, JP;
Isao Yamamoto, Kyoto, JP;
Inventors:
Assignee:
Rohm Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/24 (2006.01); G05F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage comparison unit compares a battery voltage with a predetermined threshold voltage, and outputs a comparison signal. A sequence circuit receives the comparison signal and a start-up signal instructing start-up of equipment mounted with a UVLO circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal in a state the battery voltage is higher than the threshold voltage. A voltage control unit switches the threshold voltage based on the comparison signal and the start-up signal.