Re-multiplexing apparatus, broadcasting system, re-multiplexing method, and non-transitory computer readable medium storing program

A re-multiplexing method performed by a computer and comprising:

• performing a re-multiplexing process for input broadcast data having a first resolution in order to output the broadcast data having the first resolution from at least one transmitting apparatus as an OFDM-modulated wave (Orthogonal Frequency Division Multiplexing);
• outputting first transmission data generated by the re-multiplexing process to the at least one transmitting apparatus through a first line;
• performing a re-multiplexing process for input broadcast data having a second resolution in order to output, together with the broadcast data having the first resolution, the broadcast data having the second resolution from the at least one transmitting apparatus as the OFDM-modulated wave;
• and
• outputting second transmission data generated by the re-multiplexing process to the at least one transmitting apparatus through a second line, wherein
• in the re-multiplexing process for the broadcast data having the second resolution,
• a delay control packet is generated, the delay control packet containing control information for compensating for a difference between delay times of the first and second lines,
• the delay control packet is inserted at a timing corresponding to a timing of a first packet of an OFDM frame set in the re-multiplexing process for the broadcast data having the first resolution, and
• an index value of a waiting time from a time when the delay control packet is received in the at least one transmitting apparatus to a start of a modulation process for a packet following the delay control packet is generated as the control information.

A non-transitory computer readable medium storing a program for causing a computer to perform:

• performing a re-multiplexing process for input broadcast data having a first resolution in order to output the broadcast data having the first resolution from at least one transmitting apparatus as an OFDM-modulated wave (Orthogonal Frequency Division Multiplexing);
• outputting first transmission data generated by the re-multiplexing process to the at least one transmitting apparatus through a first line;
• performing a re-multiplexing process for input broadcast data having a second resolution in order to output, together with the broadcast data having the first resolution, the broadcast data having the second resolution from the at least one transmitting apparatus as the OFDM-modulated wave;
• and
• outputting second transmission data generated by the re-multiplexing process to the at least one transmitting apparatus through a second line, wherein
• in the re-multiplexing process for the broadcast data having the second resolution,
• a delay control packet is inserted at a timing corresponding to a timing of a first packet of an OFDM frame set in the first re-multiplexing step, the delay control packet containing control information for compensating for a difference between delay times of the first and second lines, and
• an index value of a waiting time from a time when the delay control packet is received in the at least one transmitting apparatus to a start of a modulation process for a packet following the delay control packet is generated as the control information.