Signal processing method and apparatus, signal reproducing method and apparatus, and recording medium
AssigneeKabushiki Kaisha Toshiba
InventorsTadashi Kojima, Hisashi Yamada, Kouya Tochikubo, Hideki Mimura, Taku Kato, Tooru Kamibayashi, Akio Tanaka
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Abstract
A signal processing method multiplexes/arranges digital data of a specific unit to form a predetermined unit, adds an error correction code to the predetermined unit to constitute an error correction coded block, replaces a part of the error correction coded block with specific data, and outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.
Claims20
A signal processing method comprising:
- multiplexing/arranging digital data of a specific unit to form a predetermined unit;
- adding an error correction code to the predetermined unit to constitute an error correction coded block;
- replacing a part of the error correction coded block with specific data;
- and
- outputting the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.
A signal processing method for processing an error correction coded block transmitted through a transmission medium or reproduced from a recording medium, the error correction coded block being obtained by multiplexing/arranging digital data of a specific unit to form a predetermined unit;
- adding an error correction code to the predetermined unit to constitute the error correction coded block;
- replacing a part of the error correction coded block with specific data;
- and outputting the error correction coded block with the specific data being replaced to the transmission medium or the recording medium, the method comprising:
- reproducing an original error correction coded block before the specific data replacement by copying to the part of the error correction coded block replaced with the specific data, data of another portion in which data to be originally arranged in the part is arranged;
- and
- performing an error detection/correction processing with respect to the original error correction coded block.
A signal processing apparatus comprising:
- a data sectoring circuit which multiplexes/arranges digital data of a specific unit to form a predetermined unit;
- an adder which adds an error correction code to the predetermined unit to constitute an error correction coded block;
- a data replacing circuit which replaces a part of the error correction coded block with specific data;
- and
- an output circuit which outputs the error correction coded block with the specific data being replaced to a transmission medium or a recording medium.
Dependencies are inferred from the claim text.