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. 06, 1997
Filed:
Aug. 17, 1994
Shiro Fujiki, Tokyo, JP;
Yaesu Musen Co., Ltd., Tokyo, JP;
Abstract
An electronic device (21) switches its operation mode in accordance with the type of an installed battery pack (22). The battery pack (22) has a regulator (222), a specification-discriminating terminal (TJ), and a resistor (224), connected between the regulator (222) and the specification-discriminating terminal (TJ) and having a resistance corresponding to the specification of the incorporated battery (221). The electronic device (21) has a monitor resistor (214) connected between a terminal (TL) connected to the specification-discriminating terminal (TJ) of the battery pack (22) and ground, a discriminating circuit (212, 215, 216) for detecting a monitor voltage generated across this monitor resistor (214) to discriminate the specification of the battery (221), and a switch controller (212, 219) for switching the operation mode in accordance with the specification discriminated by the discriminating circuit (212, 215, 216).