| 摘要 |
PROBLEM TO BE SOLVED: To process both calculation and packeting of the prescribed data which are necessary for error checking in real time and by performing the formed processing of those calculation and packeting operations in hardware, while the data format of a 1st data material of a 1st signal form is converted into a 2nd signal form. SOLUTION: When the data formats which are read out of a recording/ reproducing part 7 by the data encoders 6A to 6N have the TCP/IP forms, the media access control(MAC) and the section headers are added in the software processing to the heads of the broadcast material data D1A to D1N and D2A to D2N at an arithmetic processing part 20. Thus, the TCP/IP forms are converted into the section formats. Then those broadcast material data undergo hardware processing at an enciphrement processing part 28 and are turned into the enciphrement data D24 with the exclusion of each header. The corresponding redundancy data necessary for the error checking undergo a hardware processing operation via a packetizer 29 and are added to the end of the data D24 to obtain the MAC frame data. Then the MAC frame data are used as TS packet data D30, which are outputted via a TS output part 31 as TS packet data D3A to D3N.
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