Communication apparatus, power supply control method, display apparatus, communication method, and computer program product

A communication method comprising:

• receiving from a communication apparatus, a confirmation message that confirms whether connections are to be established with the communication apparatus that transmits image data;
• first judging including judging whether the connections are to be established on the basis an operation mode of an application program that runs on a display apparatus and that accesses information stored on the display apparatus or on the communication apparatus when the confirmation message is received;
• first generating including generating a reply message indicating whether the connections are to be established, on the basis of a judging result of the first judging;
• transmitting the reply message to the communication apparatus;
• second judging including judging, when a change is to be made to the operation mode, whether the connections are to be established based on an operation mode after the change,
• second generating including generating, when the change is to be made to the operation mode, a notification message that is notified during the connections being established to indicate whether the connections are to be established, based on a judging result of the second judging, and
• transmitting the notification message to the communication apparatus before the change is made to the operation mode.

A computer program product including a non-transitory computer readable medium including instructions for communications, wherein the instructions, when executed by a computer, cause the computer to perform operations comprising:

• receiving from a communication apparatus, a confirmation message that confirms whether connections are to be established with the communication apparatus that transmits image data;
• first judging including judging whether the connections are to be established on the basis of an operation mode of an application program that runs on a display apparatus and that accesses information stored on the display apparatus or on the communication apparatus when the confirmation message is received;
• first generating including generating a reply message indicating whether the connections are to be established, on the basis of a judging result of the first judging;
• transmitting the reply message to the communication apparatus;
• second judging including judging, when a change is to be made to the operation mode, whether the connections are to be established based on an operation mode after the change,
• second generating including generating, when the change is to be made to the operation mode, a notification message that is notified during the connections being established to indicate whether the connections are to be established, based on a judging result of the second judging, and
• transmitting the notification message to the communication apparatus before the change is made to the operation mode.