Display apparatus, wireless transmitting and receiving system, display method, display control program, and recording medium

A wireless transmitting and receiving system for transmitting and receiving at least a video signal by wireless communication,

• the wireless transmitting and receiving system, comprising:
• a wireless transmitting apparatus for wirelessly transmitting the video signal and a recognition information signal;
• and
• a display apparatus, which includes:
• wireless receiving means for receiving the video signal and the recognition information signal;
• display means for displaying an image in accordance with at least the video signal;
• recognition information detecting means for detecting the recognition information signal;
• jamming signal detecting means for detecting, in an operating frequency band used for the wireless communication, a jamming signal other than the video signal;
• and
• display control means for, when the video signal is not normally received, causing the display means to display abnormality information indicating an abnormal state,
• when the jamming signal detecting means detects the jamming signal, the display control means causing the display means to display, as the abnormality information, jamming signal information indicating presence of the jamming signal.

A display apparatus for receiving at least a video signal by wireless communication,

• the display apparatus, comprising:
• wireless receiving means for receiving the video signal that is wirelessly transmitted;
• jamming signal detecting means for detecting, in an operating frequency band used for the wireless communication, a jamming signal other than the video signal;
• and
• jamming signal information outputting means for, in response to the detection of the jamming signal, outputting jamming signal information indicating presence of the jamming signal.

A display method for (i) receiving at least a video signal by wireless communication and (ii) displaying an image,

• the display method, comprising:
• a first step of determining whether or not the video signal that is wirelessly transmitted is unable to be received;
• a second step of, when it is determined in the first step that the video signal is unable to be received, determining whether or not a signal other than the video signal is detected in an operating frequency band used for the wireless communication;
• and
• a third step of carrying out a display in accordance with a result of the determination made in the second step, so as to inform that it is not possible to receive any signal.

A display control program for (i) receiving at least a video signal by wireless communication and (ii) displaying an image,

• the display control program causing a computer to carry out:
• a step of determining whether or not the video signal that is wirelessly transmitted is unable to be received;
• a step of, when it is determined in the first step that the video signal is unable to be normally received, determining whether or not a signal other than the video signal is detected in an operating frequency band used for the wireless communication;
• and
• a step of carrying out a display in accordance with a result of the determination made in the second step, so as to inform that it is not possible to receive any signal.