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. 16, 2013
Filed:
Mar. 29, 2007
Erkki Nokkonen, Tampere, FI;
Pasi Palojarvi, Oulu, FI;
Erkki Nokkonen, Tampere, FI;
Pasi Palojarvi, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
An apparatus includes a connector, for providing a physical connection to a USB device, a detection circuit, operable to detect attachment of a USB device; and a charging circuit, for charging a battery of a portable device using current drawn from a USB device, the charging circuit being operable, if it is detected that a USB device is attached, to generate a start-up request signal. The apparatus has a charging mode in which power is provided by the charging circuit to the battery, and a USB connection mode for providing a USB connection. The apparatus also includes a control unit, operable in response to the start-up request signal to determine whether power supplied by the battery meets a predetermined criterion. The control unit is also operable, if it is determined that the predetermined criterion is not met, to control the apparatus to be in the charging mode and prevent the apparatus from entering the USB connection mode and operable, if it is determined that predetermined criterion is met, to control the apparatus to enter the USB connection mode.