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High-density digital general optic disk short-pulse serial-error-correction interlacing method

A short burst, high-density technology, applied in the direction of digital signal error detection/correction, error correction/detection using interleaving technology, digital signal formatting, etc., can solve the problem of long burst increase and achieve addressing operation number Effect of reducing, reducing size, increasing interlacing speed

Inactive Publication Date: 2005-08-31
DAEWOO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, foreign matter, such as dust, causing errors in short bursts has a relative increase in nicks causing errors in long bursts, thereby prohibiting the use of conventional error correction systems for error correction processing

Method used

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  • High-density digital general optic disk short-pulse serial-error-correction interlacing method
  • High-density digital general optic disk short-pulse serial-error-correction interlacing method
  • High-density digital general optic disk short-pulse serial-error-correction interlacing method

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Experimental program
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Embodiment Construction

[0033] Refer to accompanying chart. Preferred specific devices of the present invention will be described in detail below.

[0034] FIG. 1 is a general digital versatile disk random access memory (DVD-RAM) suitable for the present invention. Referring to FIG. 1, a DVD-RAM includes a recording portion recorded on an optical disc using a pickup 108 and a reproduction portion copied from an optical disc 110 using a pickup. The recording section includes a formatter 101, an scrambler 102, an ECC encoder 103, a modulator 104, a non-return-to-zero inversion (NRZI) encoder 105, a recording waveform shaper 106, a laser driver (LD driver) 107 and a recording phase lock Loop (PLL) 109 . The replica section includes a radio frequency amplifier (RF-AMP) 111, an automatic gain control circuit (AGC) 112, a pre-equalizer (PRE-EQ) 113, a limiter 114, a replica PLL 115, an analog / digital converter (ADC) 116, an equalizer detector (EQ) 117, Viterbi detector 118, a sync / 1D code detector 119, ...

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Abstract

Provided is a method for formatting and interleaving error correction blocks adaptively for improving a capability of correcting short burst errors in a high density DVD. The interleaving method includes the steps of merging a plurality of error code correction (ECC) blocks, each having a predetermined size, in a horizontal direction, to form a merged ECC block, and storing the merged ECC block in a buffer in units of a predetermined number of rows and interleaving the ECC block in units of a predetermined number of bytes in accordance with a predetermined interleaving rule. Since ECC block data of every two lines is first buffered and then interleaved by every four bytes rather than one by one byte, the interleaving speed can be increased and the memory required for interleaving can be saved.

Description

technical field [0001] The present invention relates to Digital Versatile Video Disc (DVD) technology, and more particularly to a method of formatting and interleaving error-correcting data blocks adaptively to improve the ability to correct burst errors in high-density DVDs. Background technique [0002] Generally speaking, DVDs are basically divided into two forms: read-only DVDs and read and rewritable DVDs. Information storage on read-only optical discs is realized by forming grooves called pits on the surface of the disc. "0" is designated to represent the pit part, and "1" is designated to represent the non-pit part (ie, the contact surface) . During duplication, laser light is irradiated onto the surface of the optical (optical) disc, and "0"s and "1s" are distinguished according to differences in light reflectivity. For example, in rewritable and erasable phase-change optical discs, the recording layer of the optical disc undergoes a structural transition between a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/12G11B20/18H03M13/27H04N5/85H04N9/804
CPCH04N5/85G11B20/1866H03M13/276H03M13/2782H03M13/271H04N9/8042H03M13/27
Inventor 郭大渊
Owner DAEWOO ELECTRONICS CO LTD