CD-disc data restoration method and cd-disc data restoration system

A recovery method and recovery system technology, applied in the direction of optical recording/reproduction, data recording, digital recording/reproduction, etc., can solve the problems of increasing production costs, increasing hardware scale, technical and economic constraints, etc., and achieve low cost , highly achievable effect

Inactive Publication Date: 2008-02-06
赵辉
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  • Abstract
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  • Application Information

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Problems solved by technology

Such a large-scale calculation will greatly increase the hardware scale, increase production costs, and even make it impossible to realize
Therefore, if the nonlinear equalization algorithm is to be used for optical disc data recovery, the solution that relies solely on hardware will be restricted by both technology and economy, and cannot fully meet the actual needs of the majority of optical disc users.

Method used

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  • CD-disc data restoration method and cd-disc data restoration system
  • CD-disc data restoration method and cd-disc data restoration system
  • CD-disc data restoration method and cd-disc data restoration system

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Embodiment Construction

[0052] The optical disc data recovery method and system thereof provided by the present invention are specially proposed to solve the problem of data recovery from off-target discs.

[0053] The optical disc data recovery system shown in FIG. 2 includes a sequentially connected disc reader 11 , a signal acquisition device 12 and a host 13 for performing information processing and decoding tasks.

[0054] The disk reader 11 has a spindle motor and its driving circuit, an optical head assembly, and a circuit that can provide focus servo and track tracking servo required to rotate the disk. It receives control commands from the host computer 13 and outputs analog high-frequency signals to the outside. The disc reader 11 can be replaced by an ordinary optical disc drive. Ordinary optical disk drives can also perform functions such as focus servo, track tracking servo, and signal binarization detection (such as PRML detection). The function of sector data and user sector data, an...

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Abstract

The present invention discloses a method for the resumption of disc data; and also discloses a disc data recovery system used for the disc data resumption method. In the method, and under the circumstance of the demand on discarding synchronization and randomicity, the signal processing part is made into software on the main set, thus easily realizing a more excellent and complicated signal processing algorithm. Compared with the complex algorithm of hardware, the present invention has the advantages of easy realization and low cost. Moreover, the present invention simplifies the demand on the system and the hardware; reduces the cost of resuming disc data; and effectively resolves the data resumption issue of an off-standard disc.

Description

technical field [0001] The invention relates to a method for recovering damaged optical disc data and a system for realizing the optical disc data recovery method, belonging to the technical field of optical disc storage. Background technique [0002] Optical storage is an important information storage technology emerging after magnetic recording technology. In recent years, optical storage has not only achieved major breakthroughs in technology, but also achieved great success in commercial scale production, and has become a striking high-tech industry. Digital data storage media represented by optical discs have become an indispensable information carrier in the contemporary information society, and are widely used in information distribution, data backup and other fields. [0003] FIG. 1 shows the process of reading information from an optical disc in an existing optical disc drive. During the rotation of the optical disc 1, the optical head 2 focuses the laser light on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10G11B20/18G11B7/00
Inventor 刘京春
Owner 赵辉
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