Abstract: The embodiment of the present disclosure provides a method and a device for detecting a shielded WiHD data projection channel. The method comprises: establishing a WiHD data projection channel between a mobile terminal and a WiHD data receiver; transmitting a verification message to the WiHD data receiver through the WiHD data projection channel; determining whether a response message is received or not; if not, generating an event that the state of the WiHD data projection channel is changed; displaying the prompting indicating that the WiHD data projection channel is shielded according to the event. According to the present disclosure, when the response message is not received, the situation means that the WiHD data projection channel is shielded, and then the prompting of shielding may be displayed to prompt a user to adjust the position of the mobile terminal so as to eliminate shielding.

Abstract: An embodiment of the present disclosure discloses a control method and a control device for a mobile terminal in order to solve the problem in the prior art that power consumption of the mobile terminal increases as an HPD function of an HDMI is enabled all the time alley the mobile terminal is powered on. The mobile terminal comprises a USB interface and an HDMI, and an operating mode of the USB interface is compatible with a USB OTG mode and an MHL mode of the mobile terminal. The control method for the mobile terminal comprises the following steps: a USB OTG driver detects whether MHL equipment is plugged in the USB interface; and the USB OTG driver triggers to enable an HPD function of the HDMI if the USB OTG driver detects that the MHL equipment is plugged in the USB interface.