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System and method for error correction in optical disk system

An error correction and error technology, applied in the field of erasing signals

Inactive Publication Date: 2008-07-02
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, making C 2 or PO is better at error correction than C 1 or PI for more efficient erase signals may have to be in C 1 or when the PI ends

Method used

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  • System and method for error correction in optical disk system
  • System and method for error correction in optical disk system

Examples

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Embodiment Construction

[0024] figure 1 It is a block diagram of an error correction system 10 according to an embodiment of the present invention. Such as figure 1 As shown, system 10 includes a read channel 12 , a demodulator 14 , a servo 16 , a controller 18 and an error correction code (ECC) decoder 20 . The reading channel 12 receives data generated by an optical pickup head (not shown) scanning the surface of an optical storage medium (not shown) such as a compact disc (CD) or a digital video disc (DVD). CD-ROMs may include read-only CD-ROM, music CD-DA, write-once CD-R, and write-many CD-RW. The format of DVD is similar to CD.

[0025] The data from the optical read head contains radio frequency (RF) signals. In one embodiment of the present invention, the reading channel 12 is a slicer-type reading channel, which includes an RF amplifier (not shown in the figure) for adjusting the amplitude of the data reproduction signal to a fixed amplitude, and an equalizer (not shown in the figure) f...

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PUM

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Abstract

A system for error correction that comprises a servo device receiving data sent from an optical pickup head and determining whether the data include a first error, a read channel determining whether the data include a second error, a demodulator determining whether the data include a third error, and a controller marking the data with a flag if it is determined that the data include the first, second, or third error.

Description

technical field [0001] The present invention relates to the error correction in the optical disc reproduction system, and in detail, relates to the system and method for providing erasing signals in the optical disc reproduction system. Background technique [0002] An optical disc reproduction system generally includes an optical pickup head, a pickup channel, a servo controller, a demodulator, and an error correction code (ECC) decoder. An optical pickup head applies a laser beam to the surface of an optical storage medium to read or write data into an optical storage medium such as a compact disk (CD) or digital video disk (DVD). There is usually a pre-amplifier to amplify the output signal of the optical pickup and generate a regenerated radio frequency (RF) signal. The read channel converts the RF signal into a bit string. The servo controller detects the RF signal and generates an error signal for servo control. A demodulator is connected to the read channel to demo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/18G11B7/00
CPCG11B20/1866
Inventor 杨欣龙
Owner NOVATEK MICROELECTRONICS CORP