Presence transmission method, video display device, and video display system

1. A presence transmission method comprising:

controlling communication of a call via a network;

transmitting, via the network, a first presence indicating a current status; and

executing predetermined functions, wherein

the transmitting includes transmitting the first presence indicating that it takes time to answer an incoming call when a specific function among the predetermined functions is to be executed, the specific function causing delay in answering the incoming call,

the executing includes storing a presence prior to activation of the specific function as a pre-activation presence in a memory upon the activation of the specific function, and obtaining the pre-activation presence upon completion of execution of the specific function, and

the transmitting includes transmitting the pre-activation presence upon the completion of the execution of the specific function.

2. The presence transmitting method of claim 1 , wherein

the executing includes controlling execution of applications corresponding to the predetermined functions, and

the transmitting includes, if a specific application as the specific function is to be executed among the applications, transmitting, via the network, the first presence indicating that it takes time to answer an incoming call.

3. The presence transmitting method of claim 1 , wherein

the executing includes executing the predetermined functions in an application, and

the transmitting includes, if the specific function is to be executed among the predetermined functions in the application, transmitting, via the network, the first presence indicating that it takes time to answer an incoming call.

4. A video display device comprising:

a communication controller configured to control communication of a call via the network;

a transmitter configured to transmit, via the network, presence indicating a current status; and

an execution controller configured to execute predetermined functions, wherein the transmitter transmits a first presence indicating that it takes time to answer an incoming call when a specific function among the predetermined functions is to be executed, the specific function causing delay in answering the incoming call,

the execution controller is configured to store a presence prior to activation of the specific function as pre-activation presence in the memory upon the activation of the specific function, and to obtain the pre-activation presence upon completion of execution of the specific function, and

the transmitter is configured to transmit the pre-activation presence as the first presence upon the completion of the execution of the specific function.

5. The video display device of claim 4 , wherein

the execution controller is configured to control execution of applications corresponding to the predetermined functions, and

if a specific application as the specific function is to be executed among the applications, the transmitter transmits, via the network, the first presence indicating that it takes time to answer an incoming call.

6. The video display device of claim 4 , wherein

the execution controller is configured to execute the predetermined functions in an application, and

if the specific function is to be executed among the predetermined functions in the application, the transmitter transmits, via the network, the first presence indicating that it takes time to answer an incoming call.

7. A video display system comprising:

a video display device; and

an information processor connected to the video display device via a network,

wherein the video display device comprising

a communication controller configured to control communication of a call with the information processor via the network,

a transmitter configured to transmit, via the network, a first presence indicating a current status, and

an execution controller configured to execute predetermined functions, and

wherein the transmitter transmits, the first presence indicating that it is difficult to answer an incoming call when a specific function among the predetermined functions is to be executed, the specific function causing delay in answering the incoming call,

the execution controller is configured to store a presence prior to activation of the specific function as pre-activation presence in the memory upon the activation of the specific function, and to obtain the pre-activation presence upon completion of execution of the specific function, and

the transmitter is configured to transmit the pre-activation presence upon the completion of the execution of the specific function, and

wherein the information processor comprising

a receiver configured to receive the first presence, and

a display module configured to display an icon corresponding to the first presence.