Transmission controller, reception controller, transmission control method, reception control method and transmission control program

摘要

A transmission control device generates, based on a content stream acquired from an external source, auxiliary information necessary for at least one of recording and playback of a content in the content stream and transmits a transmission target stream to an external device. The transmission target stream includes a first stream portion based on the content stream and a second stream portion based on the generated auxiliary information.

主权项

1. A transmission control device comprising:
a recording unit operable to, upon receiving input of a content composed of a plurality of TS packets, (i) attach an extension header including an arrival time stamp to each of the TS packets, and (ii) record the content on a recording medium; a generation unit operable to (i) acquire time map information and segment management information by analyzing video or audio composed of TS packets, and (ii) generate first auxiliary information including the time map information, the segment management information, and copy control information (CCI); and a transmission unit operable to (i) generate a partial stream composed of some or all of the TS packets based on the content and the first auxiliary information, (ii) generate second auxiliary information including the time map information, the segment information, and the CCI based on the first auxiliary information pertaining to the partial stream, (iii) store the second auxiliary information in one or more packets not included in the partial stream, (iv) generate a transmission target stream composed of the partial stream and the one or more packets storing therein the second auxiliary information, and (v) transmit the transmission target stream to an external device, wherein the time map information included in the first auxiliary information and the second auxiliary information indicates a packet number of an access unit of a video stream or an audio stream composed of TS packets in association with a time stamp of the access unit, and the segment management information included in the first auxiliary information and the second auxiliary information includes a start presentation time stamp, an end presentation time stamp, a packet identifier, video coding information, audio coding information, a start packet number, and an end packet number.