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APPARATUS AND METHOD OF IDENTIFYING A USB OR AN MHL DEVICE

  • US 20130179603A1
  • Filed: 12/20/2012
  • Published: 07/11/2013
  • Est. Priority Date: 01/06/2012
  • Status: Abandoned Application
First Claim
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1. An apparatus for identifying whether a device is a universal serial bus (USB) typed or a mobile high-definition link (MHL) typed device, wherein the device is connected to the apparatus through a connector comprising a first data pin and a voltage-reference pin, comprising:

  • a first switch having a first terminal and a second terminal; and

    a first resistor-detecting module having a third terminal and a fourth terminal, wherein the first resistor-detecting module and the first switch are connected in series, wherein a first conductive path is formed from a first voltage-supply node, through the first resistor-detecting module and the first switch, to the first data pin when the first switch is turned on, wherein the device is the USB typed device when a voltage level at the first data pin is less than a pre-defined voltage level and the device is the MHL typed device if the voltage level at the first data pin is not less than the pre-defined voltage level.

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