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. 21, 2009
Filed:
Nov. 30, 2005
Taichi Sasaki, Fukushima, JP;
Masahiko Hayakawa, Fukushima, JP;
Dai Sasaki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Sony Computer Entertainment Inc., Tokyo, JP;
Abstract
A battery pack having a secondary battery and a circuit that controls charging and discharging of the secondary battery is provided. The battery pack has a computer that communicates with another computer disposed in a charging device, authenticate the charging device, and calculates remaining capacity information of the secondary battery. When the computer has not successfully authenticated the charging device and has detected that the secondary battery has been charged in a predetermined manner, the computer forcibly sets the remaining capacity information to 'no remaining capacity'.