Display control method and display device

A display control method comprising:

• when a first display device is in a first display mode, obtaining a first image signal from a first electronic device through a first-type port of the first display device, and outputting the first image signal to a first display unit of the first display device;
• determining that the first display device meets a condition for switching from the first display mode to a second display mode, and outputting a mode switching signal to a second display device connected to the first display device, to instruct the second display device to switch from the first display mode to the second display mode;
• and
• when the first display device is in the second display mode, obtaining a second image signal from a second electronic device through a second-type port of the first display device, and outputting the second image signal to the first display unit, wherein
• when the second display device is in the second display mode, the second display device obtains a third image signal from the second electronic device through a second-type port of the second display device, and the third image signal is output through a second display unit of the second display device.

A first display device comprising:

• a multi-function port configured to connect to a second display device;
• a first display unit;
• and
• a processing apparatus configured to:
• when the first display device is in a first display mode, obtain a first image signal from a first electronic device and output the first image signal to the first display unit;
• determine that the first display device meets a condition for switching from the first display mode to a second display mode, and output a mode switching signal to the second display device, to instruct the second display device to switch from the first display mode to the second display mode;
• and
• when the first display device is in the second display mode, obtain a second image signal from a second electronic device and output the second image signal to the first display unit;
• wherein, when the second display device is in the second display mode, the second display device obtains a third image signal from the second electronic device, and the third image signal is different than the second image signal and is output through a second display unit of the second display device.