System for providing access to operation information
View Patent ↗A method for providing access to operation information relating to a digital signal, including providing a digital signal encoded, in accordance with a layered encoding scheme, in a plurality of layers, and extracting operation information from a first layer of encoding within the digital signal, and placing the extracted information in a data section in a second layer of encoding within the digital signal. Related methods and apparatus are also described.
1. A method for providing access to operation information relating to a portion of a digital signal, the method comprising:
receiving a digital signal, the digital signal comprising a data section and at least one other section, the data section comprising operation information;
utilizing the operation information; and
placing the operation information in a retrieval area,
wherein:
the one other section is encrypted, and
the data section is not encrypted, and
the one other section comprises a copy of the operation information.
2. The method according to claim 1 and wherein the utilizing comprises ensuring that correct video data is played back.
3. The method according to claim 1 and wherein the retrieval area comprises an index.
4. The method according to claim 1 and wherein the extracting occurs when the digital signal is played back.
5. The method according to claim 1 and wherein the extracting occurs when the digital signal is recorded.
6. The method according to claim 1 and wherein the operation information comprises at least one of:
a location and type of access unit;
timing information; and
rendering information.
7. The method according to claim 1 and wherein the data section is optimized for implementation in hardware.
8. Apparatus for providing access to operation information relating to a portion of a digital signal, the apparatus comprising:
a digital signal receiver operative to receive the digital signal, the digital signal comprising a data section and at least one other section, the data section comprising operation information;
an operation information utilizer; and
an operation information placer, operative to place the operation information in a retrieval area,
wherein:
the one other section is encrypted, and
the data section is not encrypted, and
the one other section comprises a copy of the operation information.
9. Apparatus for providing access to operation information relating to a portion of a digital signal, the apparatus comprising:
means for receiving the digital signal, the digital signal comprising a data section and at least one other section, the data section comprising operation information;
means for utilizing operation information; and
means for placing information, the means for placing information operative to place the operation information in a retrieval area,
wherein:
the one other section is encrypted, and
the data section is not encrypted, and
the one other section comprises a copy of the operation information.