Patent ID: 7502449

Claim:
A contents distribution system for transmitting and receiving contents and additional information in accordance with a communication protocol in which one or more pieces of the additional information corresponding to an internal attribute of said contents are appended to said contents and said contents and said additional information are packetized as a data part without distinction, said system comprising: a contents server having storage unit holding one or more contents, contents data acquisition unit receiving a data request including request range information of contents out of consideration for the additional information, specifying a requested range, and extracting data of contents in said requested range from said storage unit, and transmitting unit transmitting the extracted data of said contents with said additional information appended; and a contents receiving apparatus having receiving unit receiving the data of said contents and said additional information that are transmitted from said transmitting unit, received data decision unit deciding a receiving request range of said contents out of consideration for said additional information, and data request transmitting unit transmitting said data request including decided receiving request range as request range information; wherein said contents data acquisition unit specifies said requested range according to said data request transmitted by said data request transmitting unit.