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Electronic device and method of electronic device for determining power source device

  • US 9,146,261 B2
  • Filed: 09/05/2013
  • Issued: 09/29/2015
  • Est. Priority Date: 09/11/2012
  • Status: Expired due to Fees
First Claim
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1. An electronic device for being connected to a power source device and including a power terminal, a ground terminal and a plurality of data terminals, the electronic device comprising:

  • a current source for applying current,a voltage level detection circuit configured to detect voltage values of the plurality of data terminals,a resistor value detection circuit configured to detect a resistor value of a pull-up resistor or pull-down resistor configured to be connected to one of the plurality of data terminals in the power source device, anda connected device determination circuit configured to determine a type of the power source device based on the voltage values of the plurality of data terminals detected by the voltage level detection circuit and the resistor value detected by the resistor value detection circuit.

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