Automatic mobile device detector

摘要

Devices, methods and systems disclosed herein relate to a universal charger which provides a power supply for the charging of OMTP devices and non-OMTP devices based on whether an OMTP mobile communication device or a non-OMTP mobile communication device is connected. A power charging apparatus is provided for charging a mobile communication device. The power charging apparatus includes a connector for connecting to a charging port of the mobile communication device, and a controller coupled to the connector, the controller configured to determine whether the mobile communication device connected to the connector is a non-OMTP mobile communication device or an OMTP mobile communication device, the controller further configured to charge a non-OMTP mobile communication device when a non-OMTP mobile communication device is connected to the connector, and further configured to charge an OMTP mobile communication device when an OMTP mobile communication device is connected to the connector.

主权项

1. A power charging apparatus for charging a mobile communication device, comprising:
a connector for connecting to a charging port of the mobile communication device and including a V pin for providing current for charging the mobile communication device, a D+ pin, and a D− pin; a voltage divider coupled to the V pin, the D+ pin, and the D− pin; and a controller including an input coupled to the voltage divider such that a voltage at the input is provided from the voltage divider, the controller configured to determine whether the mobile communication device connected to the connector is a non-OMTP mobile communication device or an OMTP mobile communication device, the controller further configured to provide a first current for charging a non-OMTP mobile communication device from the V pin when a non-OMTP mobile communication device is connected to the connector, and further configured to short the D+ pin and the D− pin across at least a portion of the voltage divider to provide a second current for charging an OMTP mobile communication device from the V pin when an OMTP mobile communication device is connected to the connector, the second current being different than the first current.