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:
May. 21, 2002
Filed:
Mar. 20, 2000
Kenji Yoshioka, Yokohama, JP;
Arata Kurosawa, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Battery test of a backup battery in an emergency informing apparatus is performed. The result of the battery test is displayed to display an amount of remaining energy, an error condition, an empty condition, a replacing timing of the backup battery. The result may be displayed by flickering an LED or an LCD. The event of the battery test is controlled with a timer to prevent a power consumption of the backup battery. That is, the battery test is effected when an engine is started after a predetermined interval has passed from the previous engine start. Moreover, a timer repeatedly generates a timing signal. If the timing signal is generated during a running condition of the engine, the battery test is performed. Moreover, at start-up of the engine if a predetermined interval has passed from the previous battery test, the present battery test is executed. The time interval data may be inputted to change the predetermined interval.