Patent ID: 7860127

Claim:
A signal processing apparatus comprising: a first description contents setting means for setting information to be described in a first packet indicating a discontinuity point of a transport stream; a first generation means for generating the first packet by inserting, into a first model, the information set by said first description contents setting means and described in the first packet; a second description contents setting means for setting information to be described in a second packet indicating a discontinuity point of service information concomitantly with the discontinuity of the transport stream; and a second generation means for generating the second packet by inserting, into a second model different from said first model, the information set by said second description contents setting means and described in the second packet, wherein no transport or isochronous packets are inserted between the first packet and the second packet; and a transmission control means for controlling transmission of the first packet generated by said first generation means and transmission of the second packet generated by said second generation means based on a transmission timing, wherein the first packet and the second packet are inserted into the transport stream at two discontinuity points in the transport stream respectively.