Patent ID: 9215491
Filing Date: 2015-12-15
Classification: G06F,H04N

Abstract:
1. A method for controlling a High-Definition Multimedia Interface (HDMI) port in a device connected to an HDMI connector, the method comprising: generating a first voltage at a first pin of the HDMI port; detecting a second voltage at the first pin of the HDMI port; detecting a third voltage at a second pin of the HDMI port; comparing the second voltage to the first voltage; comparing the second voltage to the third voltage; determining based on the comparison of the second voltage to the third voltage that the HDMI port of the device is connected to an HDMI source; causing the HDMI port to act as an HDMI sink based on the determination that the HDMI port is connected to the HDMI source; determining based on the comparison of the second voltage to the first voltage that the HDMI port of the device is connected to an HDMI sink; and causing the HDMI port to act as an HDMI source based on the determination that the HDMI port is connected to the HDMI sink.