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Optical disc spare area management method and cd-rom using the same

A management method and area technology, applied in the field of optical drives and the management of the spare area of ​​Blu-ray rewritable discs, can solve the problems of inconvenience and reducing the efficiency of the configuration of the spare area.

Inactive Publication Date: 2008-03-26
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is very inconvenient and reduces the efficiency of spare area configuration

Method used

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  • Optical disc spare area management method and cd-rom using the same
  • Optical disc spare area management method and cd-rom using the same
  • Optical disc spare area management method and cd-rom using the same

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Embodiment Construction

[0019] Next, the present invention will be described in detail with reference to the accompanying drawings. In the following description, a Double Layer (Double Layer, DL) Blu-ray Rewritable (BD-RW) disc will be taken as an example for description. Similarly, the present invention is also applicable to single layer (Single Layer, SL) BD-RW discs. DL BD-RW has two layers: the first layer (layer0) and the second layer (layer1). A DL Blu-ray Disc has four spare areas, spare areas ISA0 and OSA0 on the first layer (Layer0), and spare areas ISA1 and OSA1 on the second layer (Layer1).

[0020] FIG. 4 is a schematic diagram of an optical drive according to the present invention. When a formatted BD-RW optical disc 100 is put into the optical drive, the optical disc 100 is carried by a spindle motor 102 . As mentioned above, the formatted BD-RW disc 100 has a disc definition structure and a defect list. The optical disc drive reads a spare table (spare table) from the optical disc 1...

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Abstract

A spare area management method for a blu-ray rewritable disc and a disc drive implementing this method, as well as a novel blu-ray rewritable disc. The disc has a plurality of spare areas. According to the present invention, boundary of each spare area is found, and information thereabout such as a start address and size of each spare area are stored. Such boundary information is variable as the spare areas are used. In addition, the boundary information is written to the disc. Therefore, it is possible to more efficiently use the spare areas of the disc.

Description

【Technical field】 [0001] The present invention relates to a method for managing a spare area of ​​an optical disc, and in particular relates to a method for managing a spare area of ​​a Blu-ray rewritable optical disc and an optical drive for executing the method. 【Background technique】 [0002] An optical disc, such as a blu-ray disc (BD for short), usually has a spare area for recording some backup information, and the backup information also includes a replacement (replacement) corresponding to a registered defect area. Single-layer discs have two spare areas at the innermost and outermost edges of the disc. These two spare areas are called inner spare area (Inner Spare Area, ISA) and outer spare area (Outer Spare Area, OSA). Similarly, a dual-layer disc has four spare areas. A dual-layer disc has spare areas ISA0 and OSA0 on the first layer (Layer 0), and spare areas ISA1 and OSA1 on the second layer (Layer 1), as shown in FIG. 1 . [0003] In a formatted Blu-ray rewr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/18G11B20/10
CPCG11B20/1883G11B2220/20G11B2220/216G11B2220/2541
Inventor 陈世新薛景文洪英哲
Owner MEDIATEK INC