Patent ID: 8441517

Claim:
A data processing apparatus for coding outgoing data including video and/or voice information and transmitting the coded data to a plurality of terminals, the data processing apparatus comprising: a plurality of coding units for coding the outgoing data to generate coded outgoing data; a terminal information management unit for managing terminal information related to communication features of each of the plurality of terminals; a terminal grouping unit for grouping the plurality of terminals into a plurality of groups corresponding to respective coding units in the plurality of coding units, on the basis of the terminal information managed by the terminal information management unit; and a data transmitting unit for transmitting, to each one of the groups of terminals, the coded outgoing data coded by the corresponding one of the coding units, wherein each of the coding units performs both intraframe and interframe coding of video data, the data transmitting unit transmits the data coded by the coding units in packets, the terminal information managed by the terminal information management unit includes a numerical parameter for each of the terminals, and the numerical parameter represents a packet loss rate.