Telefonaktiebolaget Lm Ericsson (publ)

Gpi Systems Ab

Rickard Andersson

Charles Forsberg

Jeremy Robert Carlson

Heino Jean Wendelrup

Kristoffer Ptasinski

Magnus Hans Hansson

Johan Ulf Mercke

Sarandis Kalogeropoulos

Petrus Evers

Derek Liddle

David Demers

Sarandis Kalogeropoulus

A method of forming a paperboard packaging container from a rectangular body blank is disclosed, the method including the following steps:

Method of producing a packaging container and a packaging container

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.

Method and apparatus for calibrating a rechargeable battery

A voltage/current regulator regulates charging of a rechargeable battery in a portable apparatus that includes a transistor and a controller means coupled to the transistor for controlling the charging current to the battery. The controller determines the power dissipation in the transistor of the regulator. If the power dissipation is above a maximum allowed power dissipation, the controller decreases the charging current by a particular current step. Otherwise, the controller determines if the power dissipation will exceed the maximum allowed power dissipation if the charging current is increased by the current step. If not, the controller increases the charging current by the current step.

Voltage/current regulator and method for battery charging

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Lund, Sweden

Rickard Andersson