Display device having processor that controls communication with external device, control method for display device, and display system

A display device comprising:

• a communication line configured to perform communication with an external display device;
• a display configured to display an image corresponding to image information;
• and
• a processor configured to cause the communication line to transmit first information to the external display device and, when waiting to receive second information from the external display device via the communication line after causing the communication line to transmit the first information to the external display device, prohibit the display from displaying the image for a first period and thereafter cause the display to display the image,
• wherein the processor starts preparation for displaying the image according to power-on of the display device and, after the preparation is completed, causes the communication line to transmit the first information to the external display device, and
• wherein, when the communication line has not received the second information for a second period after the processor prohibits the display section from displaying the image according to the transmission of the first information, the processor causes the display to display the image;
• when the communication line receives the second information before the second period elapses, the processor prohibits the display from displaying the image for the first period and thereafter causes the display to display the image;
• and, when the communication line receives the second information after the second period elapses, the processor causes the display to delay next display timing of the image by a third period corresponding to a time shift amount between transmission timing of the first information and reception timing of the second information.

A control method for a display device including a processor, a communication line configured to perform communication with an external display device and a display configured to display an image corresponding to image information, the control method comprising causing, by the processor, the communication line to transmit first information to the external display device and, when waiting to receive second information from the external display device via the communication line after causing the communication line to transmit the first information to the external display device, prohibiting by the processor, the display from displaying the image for a first period and thereafter causing the display to display the image,

• wherein the processor starts preparation for displaying the image according to power-on of the display device and, after the preparation is completed, causes the communication line to transmit the first information to the external display device, and
• wherein, when the communication line has not received the second information for a second period after the processor prohibits the display section from displaying the image according to the transmission of the first information, the processor causes the display to display the image;
• when the communication line receives the second information before the second period elapses, the processor prohibits the display from displaying the image for the first period and thereafter causes the display to display the image;
• and, when the second information reaches the communication line after the second period elapses, the processor causes the display to maintain the display of the image.

A control method for a display device including a processor, a communication line configured to perform communication with an external display device and a display configured to display an image corresponding to image information, the control method comprising causing, by the processor, the communication line to transmit first information to the external display device and, when waiting to receive second information from the external display device via the communication line after causing the communication line to transmit the first information to the external display device, prohibiting, by the processor, the display from displaying the image for a first period and thereafter causing the display to display the image,

• wherein the processor starts preparation for displaying the image according to power-on of the display device and, after the preparation is completed, causes the communication line to transmit the first information to the external display device, and
• wherein, when the communication line has not received the second information for a second period after the processor prohibits the display section from displaying the image according to the transmission of the first information, the processor causes the display to display the image;
• when the communication line receives the second information before the second period elapses, the processor prohibits the display from displaying the image for the first period and thereafter causes the display to display the image;
• and, when the communication line receives the second information after the second period elapses, the processor causes the display to delay next display timing of the image by a third period corresponding to a time shift amount between transmission timing of the first information and reception timing of the second information.