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Variable parameter self-adaptive PRML (Partial Response Maximum Likelihood) data sink and data processing method thereof

A variable parameter and self-adaptive technology, applied in the direction of configuration/installation of the head, which can solve the problems such as the inability to meet the data transmission rate of high-density optical storage and the high density of information storage.

Active Publication Date: 2015-02-18
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Although such a data receiving system can be well applied to low-density optical storage, it cannot meet the requirements of high-density optical storage with high data transmission rate and high information storage density. It is necessary to design a data readout system suitable for high-density optical storage. system

Method used

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  • Variable parameter self-adaptive PRML (Partial Response Maximum Likelihood) data sink and data processing method thereof
  • Variable parameter self-adaptive PRML (Partial Response Maximum Likelihood) data sink and data processing method thereof
  • Variable parameter self-adaptive PRML (Partial Response Maximum Likelihood) data sink and data processing method thereof

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0062] figure 1 It is a structural block diagram of the variable parameter self-adaptive PRML data receiver based on free clock sampling used in the high-density optical storage system of the present invention. Depend on figure 1 It can be seen that the variable parameter adaptive PRML data receiver based on free clock sampling used in the high-density optical disk storage system of the present invention consists of a free clock sampling module 1, a variable parameter adaptive signal conditioning module 2, a clock recovery module 3, and an adaptive maximum The likelihood decoding module 4 and the target response selection module 5 are composed, and the connection relationship of the above-mentioned modules is as follows:

[0063] The output terminal of the free clock sampling module 1 ...

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Abstract

The invention relates to a variable parameter self-adaptive PRML (Partial Response Maximum Likelihood) data sink for a high density optical disk storage system on the basis of freedom clock sampling and a data processing method thereof. The data sink comprises a free clock sampling module, a variable parameter self-adaptive signal conditioning module, a clock recovering module, a self-adaptive maximum likelihood coding module and a target response selecting module; according to the invention, by adopting a variable parameter self-adaptive signal conditioning technology, a digital interpolating clock recovering technology and a PRML (Partial Response Maximum Likelihood) principle-based maximum likelihood coding technology, high speed data transmission requirements when high-density storage data is read out can be met, meanwhile the intersymbol interference can be well eliminated, and the error rate is reduced.

Description

technical field [0001] The invention relates to high-density optical storage, in particular to a variable parameter adaptive partial response maximum likelihood (Partial-Response and Maximum-Likelihood, referred to as PRML) data receiver based on free clock sampling for high-density optical disk storage systems and The data processing method thereof is hereinafter referred to as variable parameter adaptive PRML data receiver and data processing method thereof. Background technique [0002] The development history of optical storage technology is relatively short. The earliest optical disc was the compact disc (CD) that appeared in the early 1970s. In the field of optical storage, people have been advancing along the road of large-capacity storage. Now a single-sided single-layer Blu-ray disc can store more than 25G bytes of data. In the optical disc system, according to the linear system model proposed by Bergmans, the light intensity function of the focused light spot of t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/08
Inventor 王景龙阮昊
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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