Communication apparatus, control method, and computer-readable storage medium

A method for controlling a communication apparatus, wherein the communication apparatus includes a transmission unit that transmits video data to an external apparatus, a command processing unit that transmits a first command to the external apparatus, and an acquisition unit that acquires a first physical address from predetermined information of the external apparatus, and wherein the first command includes a command for causing the external apparatus to display video data to be transmitted from the transmission unit to the external apparatus, the method comprising:

• determining whether or not a third command is received from the external apparatus by the command processing unit, wherein the third command includes a command for requesting the first command;
• determining whether or not a fourth command is received by the command processing unit after the third command is received from the external apparatus, wherein the fourth command includes a command indicating that the external apparatus displays video data to be transmitted to the external apparatus from a transmission apparatus, and the transmission apparatus is different from the communication apparatus;
• determining whether or not the first physical address is acquired from the predetermined information if the command processing unit does not receives the fourth command after the third command is received;
• determining whether or not a second physical address is acquired from a second command, received by the command processing unit, if the command processing unit does not receive the fourth command after the third command is received, wherein the second command includes a command indicating that the external apparatus displays video data to be transmitted to the external apparatus from the transmission unit;
• determining whether the first physical address matches the second physical address if the command processing unit does not receive the fourth command after the third command is received;
• controlling the command processing unit to transmit the first command including the first physical address to the external apparatus if the first physical address matches the second physical address;
• performing a process for detecting a first signal indicating a state where the external apparatus allows the communication apparatus to acquire the predetermined information;
• and
• performing a process for detecting a second signal indicating a state where the external apparatus displays video data to be transmitted from the transmission unit to the external apparatus.

A non-transitory computer-readable storage medium storing a program, wherein the program causes a computer to perform a method of controlling a communication apparatus, wherein the communication apparatus includes a transmission unit that transmits video data to an external apparatus, a command processing unit that transmits a first command to the external apparatus, and an acquisition unit that acquires a first physical address from predetermined information of the external apparatus, and wherein the first command includes a command for causing the external apparatus to display video data to be transmitted from the transmission unit to the external apparatus, the method comprising:

• determining whether or not a third command is received from the external apparatus by the command processing unit, wherein the third command includes a command for requesting the first command;
• determining whether or not a fourth command is received by the command processing unit after the third command is received from the external apparatus, wherein the fourth command includes a command indicating that the external apparatus displays video data to be transmitted to the external apparatus from a transmission apparatus, and the transmission apparatus is different from the communication apparatus;
• determining whether or not the first physical address is acquired from the predetermined information if the command processing unit does not receive the fourth command after the third command is received;
• determining whether or not a second physical address is acquired from a second command, received by the command processing unit, if the command processing unit does not receive the fourth command after the third command is received, wherein the second command includes a command indicating that the external apparatus displays video data to be transmitted to the external apparatus from the transmission unit;
• determining whether the first physical address matches the second physical address if the command processing unit does not receive the fourth command after the third command is received;
• and
• controlling the command processing unit to transmit the first command including the first physical address to the external apparatus if the first physical address matches the second physical address;
• performing a process for detecting a first signal indicating a state where the external apparatus allows the communication apparatus to acquire the predetermined information;
• and
• performing a process for detecting a second signal indicating a state where the external apparatus displays video data to be transmitted from the transmission unit to the external apparatus.