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:
Apr. 02, 2013
Filed:
Oct. 26, 2010
Shohei Tsukamoto, Chiba, JP;
Atsushi Sakurai, Chiba, JP;
Kazuaki Sano, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
Provided are a battery state monitoring circuit capable of detecting disconnection of a battery from a power supply terminal or a ground terminal, and a battery device including the battery state monitoring circuit. The battery state monitoring circuit includes voltage detection circuits provided between the power supply terminal and an intermediate terminal and between the intermediate terminal and another intermediate terminal. For example, if a battery () is disconnected from a power supply terminal (), the power supply terminal () is pulled down by a constant current circuit () to a voltage of a second intermediate terminal () so that a voltage detection circuit () detects the disconnection.