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Systems, devices and methods involving device identification

  • US 9,569,957 B2
  • Filed: 03/08/2012
  • Issued: 02/14/2017
  • Est. Priority Date: 03/08/2012
  • Status: Active Grant
First Claim
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1. A system for device identification comprising:

  • an accessory having a first power line and a first connector, the first connector being coupled to the first power line; and

    a mobile device having a second power line and a second connector, the second connector being coupled to the second power line and sized and shaped to mate with the first connector such that the accessory electrically communicates with the mobile device;

    wherein the accessory is operative to modulate impedance exhibited at the first power line in response to communication initiated by the mobile device, the mobile device being operative to initiate the communication with the accessory by providing oscillations to the accessory via a signal path established by coupling of the first connector and the second connector, the oscillations from the mobile device providing power to the accessory to modulate the impedance exhibited at the first power line;

    the mobile device having a signal conditioner electrically communicating with the second power line and being operative to isolate the modulated impedance from the oscillations such that the mobile device is operative to detect the modulated impedance and correlate the modulated impedance with an identification of the accessory;

    the mobile device being operative to selectively alter a mode of operation of the mobile device based, at least in part, on the identification of the accessory correlated from the detected modulated impedance;

    the accessory having a temperature sensor and being operative to alter the modulated impedance to encode information corresponding to a sensed temperature onto the modulated impedance and communicate the information to the mobile device; and

    the mobile device being operative to selectively alter the mode of operation of the mobile device based, at least in part, on the information encoded onto the altered modulated impedance.

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