Recording and reproducing apparatus
In the recording and reproducing apparatus, managing information and recovering data for a TS packet is inserted in the TS packet of a recording-target transport stream, and the TS packet is recorded on a recording medium. At the time of reproducing action performed after recording halt processing is not properly ended, the recovering data is extracted from the TS packet that is read out from the recording medium. The managing information is recovered from the recovering data that has been extracted. The TS packet is reproduced from the recording medium based on the managing information that has been recovered.
1 . A recording and reproducing apparatus, wherein:
managing information and recovering data for a TS packet is inserted in said TS packet of a recording-target transport stream, and said TS packet is recorded on a recording medium; and
at a time of reproducing action performed after recording halt processing is not properly ended, said recovering data is extracted from a TS packet that is read out from said recording medium, said managing information is recovered from said recovering data that has been extracted, and said TS packet is reproduced from said recording medium based on said managing information that has been recovered.
2 . The recording and reproducing apparatus according to claim 1 , comprising:
a recovering data generating section for generating said recovering data at a time of recording action;
a recording control section which generates said managing information of said TS packet of said recording-ta-get transport stream, inserts said recovering data in said TS packet, and records a recovering-data inserted TS packet on said recording medium along with said managing information;
a recording improper-ending detecting section which, upon detecting that recording halt processing is not properly ended, sends out a recording improper-ending notification to said recording control section; and
a reproducing control section which reads out said managing information from said recording medium, and reproduces said TS packet by making an access to said recording medium based on said managing information, wherein
upon receiving said recording improper-ending notification from said recording improper-ending detecting section, said reproducing control section reads out said recovering-data inserted TS packet from said recording medium and extracts said recovering data from said TS packet, recovers said managing information form said recovering data that has been extracted, and reproduces said TS packet from said recording medium based on said managing information that has been recovered.
3 . The recording and reproducing apparatus according to claim 2 , wherein said recording control section inserts said recovering data in a stuffing byte area of said TS packet.
4 . The recording and reproducing apparatus according to claim 2 , further comprising a specific PID detecting section for detecting a preset specific PID from said recording-target transport stream, wherein
upon receiving a detection notification of said specific PID from said PID detecting section, said recording control section generates divided data that is obtained by dividing said recovering data into a plurality of pieces, individually inserts said divided data to a plurality of specific TS packets that correspond to said specific PID, and records said divided-data inserted specific TS packets on said recording medium along with said managing information.
5 . The recording and reproducing apparatus according to claim 4 , wherein:
upon receiving said recording improper-ending notification from said recording improper-ending detecting section, said specific PID detecting section detects said specific PID from said transport stream that is read out from said recording medium;
at a time of reproducing action performed after receiving said recording improper-ending notification, said recovering data generating section extracts said divided data from each of said plurality of TS packets that correspond to said specific PID, and recovers said recovering data by combining a plurality of pieces of said divided data that have been extracted; and
said reproducing control section recovers said managing information by using said recovering data that has been recovered.
6 . The recording and reproducing apparatus according to claim 4 , wherein said recovering data generating section returns the original data to said TS packets whose data has been replaced with said divided data.
7 . The recording and reproducing apparatus according to claim 4 , wherein said specific PID detecting section sets the same PID as said specific PID.
8 . The recording and reproducing apparatus according to claim 4 , wherein said specific PID detecting section sets a plurality of PIDs that are different from each other as said specific PID.
9 . The recording and reproducing apparatus according to claim 2 , further comprising a payload unchanged PID detecting section which detects, in said recording-target transport stream, a payload unchanged PID that corresponds to a TS packet whose payload is unchanged, wherein
upon receiving a detection notification of said payload unchanged PID from said payload unchanged PID detecting section, said recording control section generates divided data that is obtained by dividing said recovering data into a plurality of pieces, individually inserts said divided data to each payload of a plurality of said specific TS packets that correspond to said payload unchanged PID, and records divided-data inserted specific TS packets on said recording medium along with said managing information.
10 . The recording and reproducing apparatus according to claim 9 , further comprising a divided-data inserted PID detecting section which detects, in a transport stream that is reproduced from said recording medium, divided-data inserted PIDs that correspond to said divided-data inserted TS packets, wherein
upon receiving said recording improper-ending notification from said recording improper-ending detecting section, said recovering data generating section extracts said divided data from each of said payloads of said TS packets that correspond to said divided-data inserted PIDs detected by said divided-data inserted PID detecting section, and recovers said recovering data from a plurality of pieces of said divided data that have been extracted.
11 . The recording and reproducing apparatus according to claim 10 , wherein said recovering data generating section returns the original data to said payloads whose data has been replaced with said divided data.
12 . The recording and reproducing apparatus according to claim 6 , further comprising a new PID finding section which finds a new PID that is not currently present in said recording-target transport stream, wherein
upon receiving a detection notification of said new PID from said new PID finding section, said recording control section generates divided data that is obtained by dividing said recovering data into a plurality of pieces, individually inserts said divided data in each payload of a plurality of said TS packets that correspond to said new PID, and records said divided data inserted specific TS packets on said recording medium along with said managing information.
13 . The recording and reproducing apparatus according to claim 12 , further comprising a new PID detecting section which detects said new PID in a transport stream that is reproduced from said recording medium, wherein
upon receiving said recording improper-ending notification, said recovering data generating section extracts said divided data from each of said payloads of said TS packets that correspond to said new PID detected by said new PID detecting section, and recovers said recovering data from a plurality of pieces of said divided data that have been extracted.
14 . The recording and reproducing apparatus according to claim 13 , wherein said recovering data generating section returns the original data to said payloads whose data has been replaced with said divided data.