Recording device, reproducing device, recording medium, recording method, and LSI
Provided is a recording apparatus generating meta-information including an initial address of TS packets constituting a PES packet that includes an independently-decodable picture, and including size information pertaining to the picture, and recording the generated meta-information in a recording medium. The recording apparatus includes a detection unit detecting, from the TS packets constituting a transport stream, a TS packet at a head of a PES packet, and includes a judging unit judging whether the PES packet includes an independently-decodable picture. Further, the recording apparatus includes generation unit generating meta-information including, as the size information, a size from a head of a PES packet that is judged as including an independently-decodable picture to a head of a succeeding PES packet.
1. A recording apparatus generating meta-information including an initial address of a plurality of TS packets constituting a PES packet that includes an independently-decodable picture, and including size information pertaining to the independently-decodable picture, and recording the generated meta-information onto a recording medium, the recording apparatus comprising:
a header judgment unit operable to sequentially judge whether each respective TS packet of the plurality of TS packets includes a PES packet header, based on header information of the respective TS packet of the plurality of TS packets;
a picture judging unit operable to, when the header judgment unit judges that a TS packet of the plurality of TS packets includes the PES packet header, judge whether the PES packet includes a head picture that is independently decodable, the judgment being performed by the picture judging unit using information included in the TS packet including the PES packet header, and the information included in the TS packet including the PES packet header indicating whether the head picture of the PES packet is independently decodable;
a counting unit operable to start a counting of TS packets of the plurality of TS packets when the picture judging unit judges affirmatively, and operable to stop the counting of the TS packets of the plurality of TS packets when the header judgment unit subsequently judges affirmatively, so as to obtain a TS packet count; and
a generation unit operable to generate the size information using the TS packet count obtained by the counting unit.
2. A non-transitory computer-readable recording medium having a computer program recorded thereon, the computer program causing a computer to (i) generate meta-information including an initial address of a plurality of TS packets constituting a PES packet that includes an independently-decodable picture, and including size information pertaining to the independently-decodable picture, and (ii) record the generated meta-information onto a recording medium, and the computer program causing the computer to execute a method comprising:
a header judgment step of sequentially judging whether each respective TS packet of the plurality of TS packets includes a PES packet header, based on header information of the respective TS packet of the plurality of TS packets;
a picture judging step of, when said header judgment step judges that a TS packet of the plurality of TS packets includes the PES packet header, judging whether the PES packet includes a head picture that is independently decodable, the judgment being performed by said picture judging step using information included in the TS packet including the PES packet header, and the information included in the TS packet including the PES packet header indicating whether the head picture of the PES packet is independently decodable;
a counting step of starting a counting of TS packets of the plurality of TS packets when said picture judging step judges that the PES packet includes the head picture that is independently decodable, and of stopping the counting of the TS packets of the plurality of TS packets when said header judgment step subsequently judges that any TS packet of the plurality of TS packets includes the PES packet header, so as to obtain a TS packet count; and
a generation step of generating the size information using the TS packet count obtained by said counting step.
3. A recording method for generating meta-information including an initial address of a plurality of TS packets constituting a PES packet that includes an independently-decodable picture, and including size information pertaining to the independently-decodable picture, and for recording the generated meta-information onto a recording medium, the recording method comprising:
a header judgment step of sequentially judging whether each respective TS packet of the plurality of TS packets includes a PES packet header, based on header information of the respective TS packet of the plurality of TS packets;
a picture judging step of, when said header judgment step judges that a TS packet of the plurality of TS packets includes the PES packet header, judging whether the PES packet includes a head picture that is independently decodable, the judgment being performed by said picture judging step using information included in the TS packet including the PES packet header, and the information included in the TS packet including the PES packet header indicating whether the head picture of the PES packet is independently decodable;
a counting step of starting a counting of TS packets of the plurality of TS packets when said picture judging step judges affirmatively, and of stopping the counting of the TS packets of the plurality of TS packets when said header judgment step subsequently judges affirmatively, so as to obtain a TS packet count; and
a generation step of generating the size information using the TS packet count obtained by said counting step.
4. A system LSI circuit mounted on a recording apparatus generating meta-information including an initial address of a plurality of TS packets constituting a PES packet that includes an independently-decodable picture, and including size information pertaining to the independently-decodable picture, and recording the generated meta-information onto a recording medium, the recording apparatus comprising:
a header judgment unit operable to sequentially judge whether each respective TS packet of the plurality of TS packets includes a PES packet header, based on header information of the respective TS packet of the plurality of TS packets;
a picture judging unit operable to, when the header judgment unit judges that a TS packet of the plurality of TS packets includes the PES packet header, judge whether the PES packet includes a head picture that is independently decodable, the judgment being performed by the picture judging unit using information included in the TS packet including the PES packet header, and the information included in the TS packet including the PES packet header indicating whether the head picture of the PES packet is independently decodable;
a counting unit operable to start a counting of TS packets of the plurality of TS packets when the picture judging unit judges affirmatively, and operable to stop the counting of the TS packets of the plurality of TS packets when the header judgment unit subsequently judges affirmatively, so as to obtain a TS packet count; and
a generation unit operable to generate the size information using the TS packet count obtained by the counting unit.