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Interface and communication protocol for a mobile device with a smart battery

  • US 8,670,799 B2
  • Filed: 08/31/2012
  • Issued: 03/11/2014
  • Est. Priority Date: 10/14/2005
  • Status: Active Grant
First Claim
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1. A method of communicating according to a battery communication protocol between a main processor of a mobile communication device and a battery used by the mobile communication device, wherein the method comprises:

  • providing a communication interface between the main processor and the battery to provide communication therebetween;

    sending a protocol version request packet from the main processor to the battery;

    initiating authentication of the battery by the main processor based on a cryptographic algorithm executed by the battery and the main processor, if the battery provides a protocol version response packet with a valid protocol version to the main processor in response to the protocol version request packet; and

    performing an action for a non-authentic battery, if the battery does not provide a protocol version response packet with a valid protocol version to the main processor in response to the protocol version request packet.

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