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:
Apr. 12, 2011
Filed:
Jul. 10, 2008
Fredrik B{dot Over (A)}genholm, Malmö, SE;
Stefan Sörensson, Södra Sandby, SE;
Idris Omerovic, Malmö, SE;
Henrik Heringslack, Malmö, SE;
Fredrik B{dot over (a)}genholm, Malmö, SE;
Stefan Sörensson, Södra Sandby, SE;
Idris Omerovic, Malmö, SE;
Henrik Heringslack, Malmö, SE;
Sony Ericsson Mobile Communications AB, Lund, SE;
Abstract
A power adapter includes a primary side for receiving power from a mains power supply; a secondary side for providing operating and/or charging power, derived from the primary side, to an electronic device connected to the secondary side; presence logic for determining whether the electronic device is connected to the secondary side; and switching logic for turning off the primary side automatically when the presence logic determines the electronic device is not connected. The power adapter thus shuts itself down if no electronic device is attached, and automatically starts itself up when a device is connected to the power adapter and is thus needed. The power adapter may also include voltage detection logic that detects when the device is fully charged. The power adapter also shuts itself down when an attached electronic device becomes fully charged, and automatically starts itself up when the charged state of the electronic device falls below a predetermined level. While shut down, the power adapter consumes either no power or very little power. The power adapter may wake itself up and provide power to a device even in the event the device itself is without power, such as when the device is turned off and/or has a flat or dead battery.