Communication equipment and communication control method

A communication control method performed in communication equipment arranged between a terminal device and a server, the communication control method comprising:

• detecting transmitted data that is transmitted from the communication equipment to the terminal device and non-transmitted data that is not transmitted from the communication equipment to the terminal device, from service data transmitted from the server to the terminal device through the communication equipment;
• calculating a first cost of transmitting the non-transmitted data to the terminal device;
• calculating a second cost of transmitting, to the terminal device, a difference image between an image corresponding to the service data and an image corresponding to the transmitted data;
• and
• transmitting the non-transmitted data to the terminal device when the second cost is equal to or greater than the first cost and transmitting the difference image to the terminal device when the second cost is smaller than the first cost.

A communication control method performed in a communication system in which service data is transmitted from a server to a terminal device through a gateway according to a request from the terminal device, wherein

• the gateway detects, from the service data, transmitted data that is transmitted from the gateway to the terminal device and non-transmitted data that is not transmitted from the gateway to the terminal device,
• the gateway calculates a first cost of transmitting the non-transmitted data to the terminal device,
• the gateway calculates a second cost of transmitting, to the terminal device, a difference image between an image corresponding to the service data and an image corresponding to the transmitted data,
• the gateway transmits the non-transmitted data to the terminal device when the second cost is equal to or greater than the first cost, and transmits the difference image to the terminal device when the second cost is smaller than the first cost,
• the terminal device generates an image corresponding to the transmitted data, and
• the terminal device superimposes the difference image transmitted from the gateway on the generated image to display the images.

Communication equipment arranged between a terminal device and a server, the communication equipment comprising a processor, wherein

• the processor performs a communication control method comprising:
• detecting transmitted data that is transmitted from the communication equipment to the terminal device and non-transmitted data that is not transmitted from the communication equipment to the terminal device, from service data transmitted from the server to the terminal device through the communication equipment;
• calculating a first cost of transmitting the non-transmitted data to the terminal device;
• calculating a second cost of transmitting, to the terminal device, a difference image between an image corresponding to the service data and an image corresponding to the transmitted data;
• and
• transmitting the non-transmitted data to the terminal device when the second cost is equal to or greater than the first cost and transmitting the difference image to the terminal device when the second cost is smaller than the first cost.