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Recording medium suitable for recording/reproducing multi-level data

A technology for recording media and layer data, applied in digital recording/reproduction, data recording, optical recording media, etc., can solve problems such as low efficiency

Inactive Publication Date: 2004-03-24
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when a format is composed of 8-bit units, inefficiencies result, such as an error on the medium becoming a two-word error in terms of conversion

Method used

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  • Recording medium suitable for recording/reproducing multi-level data
  • Recording medium suitable for recording/reproducing multi-level data
  • Recording medium suitable for recording/reproducing multi-level data

Examples

Experimental program
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Embodiment Construction

[0032] A description will be given of various embodiments of the present invention with reference to the drawings.

[0033] The data format of the DVD disk that has been explained in the above "Background Technology" is divided into 8 / 16 modulation (PIONEER R&D 1996 Vol.6 No.2 (13 th issue): Data format and ECC block of Special Topic "DVD", FIG7p.13 ("Pioneering Research and Development" 1996 Volume 6 No. 2 (No. 13): Special Topic "DVD", Figure 7 Page 13)) ( abovementioned, Figure 4 ). In order to clarify the difference between the format of a conventional DVD disc and the format of a recording medium according to an embodiment of the present invention, a description will be given separately of a data format composed of multi-layer data and a data format for error correction. The former is called a frame format, while the latter is called an ECC block format.

[0034] First, a description is given of a first embodiment of a recording medium according to the present invent...

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Abstract

A recording medium with a data format is provided. The data format includes frames and an ECC block. Each of the frames includes a plurality of n-level data, n being an integer satisfying n PRG 3, a clock mark that is n-level data for sampling the n-level data, and a frame sync that is n-level data for indicating a break point of the n-level data of a predetermined amount. The ECC block is a data block for error correction using a product code. The ECC block is formed by binary data of JxK words, where J is a natural number indicating the number of valid binary data in each frame, and K is a natural number indicating the number of frames when the n-level data are converted into binary data.

Description

technical field [0001] The present invention relates to a recording medium having a data format, such as an optical disc, in which the data format is a data structure in recording / reproducing multi-layer data. Background technique [0002] In general, a recording medium having the following data format has been proposed: an optical disc having a "DVD" data format and recording data by performing 8 / 16 modulation that converts 8-bit data into 16-bit data. One ECC (Error Correcting Code) block format for error correction includes 2048 bytes of user data in one sector, and 16 sectors make up one ECC block. In addition, a product code is used for error correction, and one ECC block is composed of data of 182 x 208 bytes arranged in 208 rows of 182 bytes per row. There are 10 bytes of PI (inner parity) parity data in the row direction according to Reed-Solomon code RS(182, 172, 11), and according to Reed-Solomon code RS(208, 192, 17) There are 16 bytes of PO (outer parity code) ...

Claims

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Application Information

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IPC IPC(8): G11B20/10G11B20/12G11B20/14G11B20/18G11B27/30H03M5/16H03M5/20
CPCG11B20/1496G11B2020/1225G11B20/1833H03M5/16H03M5/20G11B2220/2562G11B20/10009G11B20/1217G11B2020/1292G11B27/3027G11B2020/1222G11B2020/1275
Inventor 阪上弘文门川雄一
Owner RICOH KK
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