Communication processing apparatus, data communication system, and communication processing method

A communication processing apparatus that acts as a server for transmitting data to a client, the communication processing apparatus comprising:

• a data transceiver configured to carry out communications with the client;
• a rate controller configured to control and determine a bitrate of data transmitted to the client;
• and
• a data processor configured to prepare data to transmit in accordance with the bitrate determined by the rate controller;
• wherein the rate controller includes a bitrate setter configured to define a maximum throughput calculated on the basis of reception-interval information of data packets that are transmitted successively in a period during which a communication connection is maintained between the server and the client, and to set a transmission bitrate within a range of up to a maximum allowable bitrate corresponding to the maximum throughput.

A communication processing apparatus that acts as a client for receiving data from a server, the communication processing apparatus comprising:

• a data transceiver configured to carry out communications with the server;
• and
• a packet-interval measurer configured to measure a reception interval of data packets received from the server;
• wherein the packet-interval measurer is configured to measure a reception interval of packets that are received successively, according to identification information included in packets received from the server, and to transmit reception-interval information representing the reception interval or throughput information calculated on the basis of the reception interval to the server via the data transceiver.

A communication processing method of a server that transmits data, the communication processing method comprising the steps of:

• controlling and determining a bitrate of data transmitted to a client;
• and
• preparing data to transmit in accordance with the bitrate determined in the rate controlling step;
• wherein the rate controlling step includes the steps of
• extracting an effective data transmission and reception period not including an ineffective data transmission and reception period, the effective and ineffective data transmission and reception periods occurring in a period during which a communication connection is maintained between the server and the client, and calculating a maximum throughput on the basis of the length of the effective data transmission and reception period and the amount of data transmitted;
• and
• setting a transmission bitrate within a range of up to a maximum allowable bitrate corresponding to the maximum throughput calculated in the throughput calculating step.

A communication processing method of a server that transmits data, the communication processing method comprising the steps of:

• controlling and determining a bitrate of data transmitted to a client;
• and
• preparing data to transmit in accordance with the bitrate determined in the rate controlling step;
• wherein the rate controlling step includes the steps of
• defining a maximum throughput calculated on the basis of reception-interval information of data packets that are transmitted successively in a period during which a communication connection is maintained between the server and the client, and setting a transmission bitrate within a range of up to a maximum allowable bitrate corresponding to the maximum throughput.