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. 10, 1998
Filed:
Aug. 03, 1995
Applicant:
Inventors:
Hitoshi Maeno, Tokyo, JP;
Chizuru Ishizaka, Tokyo, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
320106 ; 320D / ;
Abstract
A power source check apparatus of a camera capable of using one of different type of batteries or battery packs detects the type of the power source used, and checks residual capacity of the power source by measuring the terminal voltage of the power source while applying suitable dummy load current in accordance with the detected type of the power source. The type of the power source is detected on the basis of any one of open circuit terminal voltage, appearance, or data code provided therein.