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:
Aug. 04, 1992
Filed:
May. 21, 1990
Applicant:
Inventor:
Jitsuo Sakamoto, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324433 ; 324426 ;
Abstract
An apparatus used in a system powered by a battery for detecting end of battery life. The apparatus includes an electromotive force comparing circuit getting power supply from a battery for comparing electromotive force of the battery with a predetermined value, and an intermittently enabling circuit for intermittently enabling the electromotive force comparing circuit. The electromotive force comparing circuit receives, only when it is enabled by the intermittently enabling circuit, power from the battery to operate. When not enabled, the electromotive force comparing circuit does not consume any power from the battery.