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:
Oct. 07, 2003
Filed:
May. 16, 2001
Kristoffer Ptasinski, Lund, SE;
Charles Forsberg, Skurup, SE;
Sarandis Kalogeropoulos, Malmo, SE;
Rickard Andersson, Lund, SE;
Petrus Evers, Darban, NC (US);
Anders Langberg, Trelleborg, SE;
David Demers, Wake Forest, NC (US);
Jeremy Carlson, Cary, NC (US);
Derek Liddle, Hampshire, GB;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Method and apparatus for calibrating a rechargeable battery for mobile telephones and other electronic devices. Calibration is accomplished during a process of completely charging the battery by determining the total amount of charge accepted by the battery during the charging process, and providing a value of total charge capacity of the battery based, at least in part, on the total amount of charge accepted by the battery. The total charge capacity of the battery is used to calculate remaining battery capacity and to predict the remaining operational time of the device. Alternative calibration procedures are provided if the battery is not completely discharged before charging or if the battery is not fully charged by the charging process. The calibration procedures of the invention require no interaction from a user (other than his initiating the normal charging process), and typically permits a calibration to be carried out notwithstanding varying usage habits of different users.