Magnetically attached battery pack with audio interface
AssigneeScosche Industries, Inc.
InventorsChristopher Michael McSweyn, Vince Alves
Life of this patent
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Abstract
A device for charging a mobile device, which is also capable of converting a digital audio signal of a mobile device in to an analog audio signal, includes a first digital interface, a digital to analog converter, and a preamplifier. The first digital interface is configured to provide power to a mobile device connected thereto in order to charge the mobile device, and the digital audio signal from the mobile device is passed to a digital to analog converter. A second digital interface or an analog jack may be incorporated, which is connectable to a headphone or other audio output device.
Claims15
A device for charging a mobile device, comprising:
- a housing defined by a distal side and a proximal side separated by a perimeter wall;
- a battery internal to the housing, the battery being receptive to power from an alternating current power source;
- a single digital interface integrated in to the housing and in electrical communication with the battery;
- a digital to analog converter with an input connected to the single digital interface and an output, the digital to analog converter being receptive to a digital signal from the single digital interface;
- an analog audio jack integrated in to the housing and connected to the output of the digital to analog converter, the analog audio jack being receptive to a two channel analog signal from the digital to analog converter to drive a load with an impedance of an audio transducer preamplifier;
- and
- a digital port which passes power from a power source to the battery;
- wherein with the mobile device connected to the single digital interface, the power from the battery is relayed to the mobile device via the single digital interface, and concurrently, the digital signal being received on the single digital interface from the mobile device is relayed to the input of the digital to analog converter, and connecting a first sensor to the digital port and a second sensor to the single digital interface which sense when there is a connector in the digital port or when the single digital interface is connected to a mobile device, or both.
Dependencies are inferred from the claim text.