Data communication system and method, data transmission device and method

A data transmission method for carrying out transmission of data at a predetermined transmit period from server units to terminal equipments connected through a communication line,

• the method including:
• a data sending step executed at the server unit;
• and
• a receiving step executed at the terminal equipment,
• wherein the data sending step includes
• a scheduling step of generating an interrupt signal at a scheduling period longer than the predetermined transmit period,
• a control step of carrying out transmitting control of data every the predetermined transmit period on the basis of quantity of transmittable data within one scheduling period unit, and
• a transmitting step of transmitting data on the basis of transmitting control from the control means,
• wherein the receiving step includes a receiving step of receiving data transmitted at the transmitting step of the server unit.

A data transmitting apparatus adapted for transmitting data at a predetermined transmit period to terminal equipments connected through a communication line,

• the apparatus comprising:
• scheduling means for generating an interrupt signal at a scheduling period longer than the predetermined transmit period;
• control means for carrying out transmitting control of data every the predetermined transmit period on the basis of quantity of transmittable data within one scheduling period unit, and
• transmitting means for transmitting data on the basis of transmitting control from the control means.

A data transmitting method for transmitting data at a predetermined transmit period from server units to terminal equipments connected through a communication line,

• the method including:
• a scheduling step of generating an interrupt signal at a scheduling period longer than the predetermined transmit period;
• a control step of carrying out transmitting control of data every the predetermined transmit period on the basis of quantity of transmittable data within one scheduling period unit;
• and
• a transmitting step of transmitting data on the basis of transmitting control from the control means.

A data transmission system adapted for carrying out transmission of data at a predetermined transmit period from server units to terminal equipments connected through a communication line,

• wherein each of the server units comprises:
• a scheduler for generating an interrupt signal at a scheduling period longer than the predetermined transmit period;
• a controller for carrying out transmitting control of data for the predetermined transmit period on the basis of quantity of transmittable data within one scheduling period unit;
• and
• a transmitter for transmitting data on the basis of transmitting control from the controller, and
• wherein each of the terminal equipments comprises a receiver for receiving data transmitted from the transmitter of the server unit.

A data transmitting apparatus adapted for transmitting data at a predetermined transmit period to terminal equipments connected through a communication line,

• the apparatus comprising:
• a scheduler for generating an interrupt signal at a scheduling period longer than the predetermined transmit period;
• a controller for carrying out transmitting control of data for every predetermined transmit period on the basis of quantity of transmittable data within one scheduling period unit, and
• a transmitter for transmitting data on the basis of transmitting control from the controller.