| 摘要 |
PROBLEM TO BE SOLVED: To ensure processing performance for decoding enciphered contents data. SOLUTION: A data receiver 23 for receiving and decoding contents data transmitted from a data transmitter 21 confirms the contents of meta data, in which information related with the encipherment of the contents data is described, before processing the contents data. A decoding processing part 43 compares the processing contents requested by the meta data with own processing performance, and when the requested processing cannot be achieved is decided when the decoding is performed by the decoding processing part 43 alone, the decoding processing part 43 requests a calculating part 44 to conduct dispersion processing of the contents data. The decoding processing part 43 receives and conducts the dispersion and decoding of the contents data, when the authentication of the dispersion processing is established with the calculating part 44, which is requested to conduct the dispersion processing. |
