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Data encoding/decoding method and system and apparatus using same

A technology of data encoding and decoding methods, applied in the direction of digital recording/reproduction, code conversion, electrical components, etc., can solve the problems of cost, large chip area, affecting the operating speed of the system, etc., to reduce the manufacturing cost and the size of the digit. , The effect of improving the processing efficiency of the system

Inactive Publication Date: 2009-10-21
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only occupies a considerable chip area and consumes more cost, but also affects the read / write efficiency and the operating speed of the entire system

Method used

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  • Data encoding/decoding method and system and apparatus using same
  • Data encoding/decoding method and system and apparatus using same
  • Data encoding/decoding method and system and apparatus using same

Examples

Experimental program
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Embodiment Construction

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings. The same reference symbols are used in the diagrams and descriptions to refer to the same or similar parts.

[0021] The present invention provides a kind of data that is suitable for reading from the storage medium, such as reading from the hard disk or the bit data stream provided by the external storage device, through the program of coding (Modulation), such as channel bit coding (Channel bit coding) Bit Modulation) program, and compiled into a data stream suitable for recording to a disc data format, such as Run-Length Limit (RLL for short) channel bits (Channel Bits). Then, the stored bit data, such as channel bit data, can be read from the data-recording disk, and converted into applicable data, such as data suitable for the operation of the host, through a decoding (Demodulation) program.

[0022] And the feature of ...

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PUM

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Abstract

Data encoding / decoding method and system and device using the method. It is a bit data stream read by an external storage device, through a coding (Modulation) program, the conversion table that requires less bit length is used to complete the coding, and compiled into a data stream suitable for recording to the disc data format, such as channel bits (ChannelBits). Then, the stored bit data, such as channel bit data, can be read from the disc where the data is recorded, and through the decoding (Demodulation) program, the decoding is completed with a conversion table that requires less bit length, and converted into applicable data .

Description

technical field [0001] The present invention relates to a data encoding / decoding method and a system and device using the method, and in particular relates to a data encoding / decoding method suitable for using a comparison table (Table) for data encoding and a method using the method The system and device can reduce the bit size of the comparison table, greatly improve the processing efficiency, and reduce the manufacturing cost. Background technique [0002] In the hard disk or optical disk system, because the access channel (Access Channel) of the disk (Disk) is limited in bandwidth (Bandwidth), when reading the data recorded on the disk, the so-called symbol will be generated. Inter-Symbol Interference (hereinafter referred to as ISI) effect. In order to reliably read data under the effect of so-called inter-symbol interference (ISI), the recorded data is usually encoded with channel bit modulation (Channel Bit Modulation) to have a run-length limit (Run-Length Limit, be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/46G11B20/10
Inventor 陈宏庆
Owner MEDIATEK INC