Information recording medium, information recording method, information recording device and information reproducing device

An information recording and media technology, applied in optical recording/reproducing/erasing methods, recording signal processing, information storage, etc., can solve the problems of reading, modifying and writing operation failure, unable to record data by sector, etc., to reduce failures. risk, the effect of improving reliability

Inactive Publication Date: 2006-08-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Data cannot be recorded sector by sector in the defective block due to a read modify write operation failure for such an unmanaged defective block
[0032] Also, when recording / reproducing AV data on / from the disc, the read modify write operation for a skipped defective block fails, so that the same problem as described above occurs

Method used

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  • Information recording medium, information recording method, information recording device and information reproducing device
  • Information recording medium, information recording method, information recording device and information reproducing device
  • Information recording medium, information recording method, information recording device and information reproducing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Disc 1 is a rewritable information recording medium. The disc 1 may be any type of information recording medium, including DVD-RAM. Data can be recorded on the disc 1 . Data recorded on the disc 1 can be reproduced from the disc. Recording and reproduction of data is performed by sectors or by blocks.

[0096] The physical structure of the disk 1 is the same as that shown in Fig. 17, so it will not be described below.

[0097] FIG. 1A shows the structure of the physical space of the disc 1 . The disc 1 includes one or more disc information areas 4 and a data recording area 5 . In the example shown in FIG. 1A, two disc information areas 4 are provided along the inner and outer peripheries of the disc 1, respectively. The disc information area 4 arranged along the inner periphery is also referred to as a "lead-in" area, and the disc information area 4 arranged along the outer periphery is also referred to as a "lead-out" area.

[0098] Data is recorded on / reproduced...

Embodiment 2

[0156] An information recording / reproducing system for recording information on or reproducing recorded information from the disc 1 described in Embodiment 1 above will be described below with reference to the drawings.

[0157] The conceptual diagram in FIG. 6 shows the principle of recording AV data on / from the disc 1 to reproduce the recorded AV data.

[0158] AV data is recorded on the disc 1 with reference to free space management information in the logical volume space. The system searches for free areas in the logical volume space according to the free space management information. The number of blocks in the continuously free area needs to be at least a predetermined number more than the number of blocks required for recording AV data. The predetermined number corresponds to the number of blocks for which skip operations are allowed. When a free area meeting this condition is found, the free area is allocated to AV data.

[0159] In the example shown in FIG. 6 , the...

Embodiment 3

[0214] An information recording / reproducing system for recording information on or reproducing recorded information from the disc 1 described in Embodiment 1 will be described below with reference to the drawings.

[0215] The block diagram in Fig. 10 shows the structure of a disc recording / reproducing drive 1020 according to Embodiment 3 of the present invention. The disc recording / reproducing drive 1020 is connected to the upper-level control unit 710 shown in FIG. 7 through an I / O bus.

[0216] The disc recording / reproducing drive 1020 includes a microprocessor in which a control program and an arithmetic memory are set. The disk recording / reproducing drive 1020 is constituted by a mechanical part, a signal processing circuit, etc., and these parts are controlled by a microprocessor. The disk recording / reproducing drive 1020 may include: an instruction processing section 1021 for processing instructions from the upper control circuit 710; a recording control section 1030 f...

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Abstract

An information recording medium of the present invention includes: a volume space in which user data is recorded; a spare area including a replacement area which may be used in place of a defective area included in the volume space; and a defect management information area in which defect management information for managing the defective area is recorded. The defect management information includes status information indicating whether the defective area is replaced by the replacement area.

Description

technical field [0001] The present invention relates to an information recording medium, an information recording method, an information recording device, and an information reproducing device. Background technique [0002] An optical disc is an information recording medium with a sector structure. In recent years, as the recording density and volume of optical discs have increased, it has become more important to ensure their reliability. In order to ensure reliability, an optical disc device performs defect management in which a sector on the disc that cannot be used for recording / reproduction (hereinafter referred to as a "defective sector") is replaced with another sector in good condition. One standard of such defect management is ISO / IEC 10090 (hereinafter referred to as "ISO standard") for 90mm optical discs published by the International Organization for Standardization (ISO). [0003] As a first prior art example, the ECC block adopted by the DVD standard and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/18G11B20/12G11B7/00G11B7/004G11B20/10H03M13/35
CPCG11B20/1883G11B20/1833G11B2020/10944G11B2020/1823G11B2020/1826G11B2020/1893G11B2020/1896G11B2220/20H03M13/35G11B7/00375G11B2020/1222G11B2020/1232G11B2220/2537
Inventor 伊藤基志植田宏后藤芳稔福岛能久
Owner PANASONIC CORP
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