Method and apparatus for writing/reading an information carrier and such an information carrier

An information carrier and solution technology, applied in the field of optical storage, can solve the problems of high temperature, high cost, high system complexity, etc., and achieve the effect of reducing cache cost and cache capacity

Inactive Publication Date: 2009-04-01
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More Spots and More Buffers Means Higher System Complexity and Higher Cost
[0008] These known techniques suffer from many limitations in increasing the data rate, such as high cost or high temperature, etc.

Method used

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  • Method and apparatus for writing/reading an information carrier and such an information carrier
  • Method and apparatus for writing/reading an information carrier and such an information carrier
  • Method and apparatus for writing/reading an information carrier and such an information carrier

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Embodiment Construction

[0038] figure 1 It is a flowchart of a method for writing an information carrier with N writers of the M-spot scheme according to an embodiment of the present invention, where N and M are integers not less than 2 and N≤M. In the present invention, the information carrier is described by taking an optical disk as an example.

[0039] In the initial step S110, when a data block is transferred to the writing device adopting the M-spot scheme, the writing amount of each light spot of the M-spot scheme is calculated. The following uses the ECC data block as an example to describe.

[0040] The above calculation is performed under a preset condition, the condition is that N writers write different parts of the data block at the same time, until the sum of all written parts equals the entire data block. In the present invention, the written amount refers to the amount of data that can be written by the writer under certain conditions, which can be converted into the track length wr...

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Abstract

The present invention proposes a methods and apparatus for writing / reading a data block onto / from an information carrier with M-spots schemes and such an information carrier. The method comprises the steps of dividing the data block into N portions according to predetermined writing capacities for each one of the N writers of the M-spots schemes, N and M being integers not less than 2 and N=M, and writing simultaneously the N portions of data onto the information carrier with the N writers correspondingly. Since all the writers are processing different portions of one data block, the data rate of processing one data block is increased almost N times. Therefore the period that the certain buffer capacity occupied by a data block is decreased substantially, total buffering capacity may be decreased, that means the cost of the schemes is dropped substantially.

Description

technical field [0001] The invention relates to a method and a device for writing / reading an information carrier and to such an information carrier. [0002] The invention can be used in the field of optical storage. Background technique [0003] In the past few years, mass storage has developed rapidly. Correspondingly, the data rate of information storage and reproduction has also been significantly increased. In order to meet the requirements of more efficient data processing, the data rate needs to reach a higher degree. [0004] In the field of optical storage technology, a known technique to increase the data rate is to increase the rotation speed of the optical disk, but there are many constraints affecting further increase in the rotation speed of the optical disk, such as operating temperature and so on. At present, the rotational speed of the optical disk has reached a relatively high level, and it is relatively difficult to further increase it. [0005] Anothe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10G11B20/12G11B7/14
CPCG11B20/10G11B20/10527G11B20/12G11B2020/1062G11B20/1217G11B2020/1294G11B2020/10759G11B2220/2562G11B7/14G11B2020/1222G11B2220/2541G11B7/004G11B7/0045G11B7/005
Inventor 刘嵘G·亨克W·M·J·M·科恩
Owner KONINK PHILIPS ELECTRONICS NV
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