Signal processing method and apparatus, signal reproducing method and apparatus, and recording medium
First Claim
Patent Images
1. A signal processing method comprising:
- forming data packs by dividing main data to be processed into constant size data packs;
forming a data block including data sectors, the data packs being multiplexed/arranged in two data sectors;
adding an error correction code to the data block to constitute an error correction coded block;
replacing a predetermined sector of the error correction coded block with specific data; and
outputting the error correction coded block after replacing the predetermined sector with the specific data to a transmission medium or a recording medium.
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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.
33 Citations
24 Claims
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1. A signal processing method comprising:
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forming data packs by dividing main data to be processed into constant size data packs; forming a data block including data sectors, the data packs being multiplexed/arranged in two data sectors; adding an error correction code to the data block to constitute an error correction coded block; replacing a predetermined sector of the error correction coded block with specific data; and outputting the error correction coded block after replacing the predetermined sector with the specific data to a transmission medium or a recording medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 forming data packs by dividing main data to be processed into constant size data packs, forming a data block including data sectors, the data packs being multiplexed/arranged in two data sectors, adding an error correction code to the data block to constitute the error correction coded block;
- replacing a predetermined sector of the error correction coded block with specific data; and
outputting the error correction coded block after replacing the predetermined sector with the specific data to the transmission medium or the recording medium, the method comprising;reproducing an original error correction coded block before replacing the specific data by copying to the predetermined sector of the error correction coded block data of another sector in which data of the predetermined sector is arranged; and performing an error detection/correction processing with respect to the original error correction coded block. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- replacing a predetermined sector of the error correction coded block with specific data; and
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15. A signal processing apparatus comprising:
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a data pack forming unit configured to form data packs by dividing main data to be processed into constant size data packs; a data block forming unit configured to form a data block including data sectors, the data packs being multiplexed/arranged in two data sectors; an adder configured to add an error correction code to the data block to constitute an error correction coded block; a data replacing circuit configured to replace a predetermined sector of the error correction coded block with specific data; and an output circuit configured to output the error correction coded block, after the predetermined sector is replaced, with the specific data to a transmission medium or a recording medium. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification