Generation device

Abstract

There is provided a transmitter by which a reception side easily detects packet loss of a transport packet. The transmitter ( 1 ) includes a content dividing unit ( 13 ) that divides a set composed of a plurality of units into a plurality of subsets, a transport sequence assigning unit ( 15 ) that assigns, to the packet, the transport sequence of the unit within a component and the transport sequence of the unit within the subset, and a header generating unit ( 14 ) that generates a packet including the transport sequences.

1 . A generation device comprising:
 a memory and   a processor, wherein the processor is configured to perform steps of:   generating a payload;   generating a payload type indicating that a media unit is included in the payload;   assigning first transport sequence information indicating a transport sequence number of the payload within a content;   assigning second transport sequence information indicating a transport sequence number of the payload within a subset of the content; and   generating a packet including the payload type, the first transport sequence information and the second transport sequence information.