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:
Jul. 20, 1999
Filed:
Dec. 02, 1997
Hitoshi Maeno, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
In this invention, there is provided a camera using a secondary battery as a power source and including load means such as a flash device or motor driven by use of electric energy of the secondary battery, charging means having a charging control circuit for charging the secondary battery with electric energy supplied from an external power source provided on the exterior of the secondary battery, and a camera control circuit for 'exclusively' driving and controlling the charging means and load means by use of an EEPROM as storage means, wherein the size of the camera is small, circuit protection can be attained, the precision of a specified voltage of a protection circuit on the secondary battery side is high, the design is simplified, and the manufacturing process and adjustment process can be simplified.