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Flaw protective circuit and method for disc data slicer

A data slicing and protection circuit technology, applied in the directions of poor vibration/sound insulation/absorption, flat record carrier equipment, etc., can solve problems such as the inability to quickly catch up with the slicing signal reference and the inability to effectively shorten the time for data errors.

Inactive Publication Date: 2004-04-21
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the defect detected by the Data Slicer is over, it cannot quickly catch up with the correct Slicing Level, so that the time for data errors cannot be effectively shortened, and improvement is urgently needed

Method used

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  • Flaw protective circuit and method for disc data slicer
  • Flaw protective circuit and method for disc data slicer
  • Flaw protective circuit and method for disc data slicer

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Embodiment Construction

[0028] The present invention mainly relates to a flaw protection circuit and method for a disk data slicer. By detecting the occurrence of a flaw in the disk, a gain adjustment mode is designed to switch the general gain to a higher gain, and after the flaw ends for a period of time Then switch to normal gain. In this way, the standard of the data slicer can quickly return to the correct slicer standard (Slicing Level) after the defect is over, so as to reduce the number of incorrect data after the defect, and reduce the jitter of the output data .

[0029] For the main idea of ​​the defect protection circuit and method of the disc data slicer described in the present invention, please refer to figure 2 . As shown in the figure, it is a block connection diagram of the defect detection and gain control logic circuit in the present invention. A defect detection circuit 50 is connected to a gain control logic circuit 52 , the gain control logic circuit 52 includes a gain cont...

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Abstract

The present invention relates to a flaw protecting circuit of a disk data slicer and the method thereof. In a slicing level of a slicer, by switching an manner having an ordinary gain used by the data slicer which is used normally by the conventional detecting optical disk when a flaw occurs to the manner having a higher gain and switching it back to the manner having the ordinary gain after the flaw has stopped for a while, the slicing level of the data slicer can soon get back to the correct slicing level of the slicer thereby to reduce the incorrect data number after the flaw and to reduce the jitter of the output data.

Description

technical field [0001] The invention relates to a defect protection circuit and method of a disc data slicer, which reduces the number of incorrect data after the defect ends by switching between high gain and normal gain. Background technique [0002] Due to the rapid development of photoelectric technology, digital audio-visual technology has achieved a higher-quality image and sound effect. Among them, digital laser disc players have been widely discussed in recent years. At present, in the technology of detecting disc defects in digital laser disc players, when a disc defect is detected, the gain speed of the data slicer (Data Slicer) of the disc drive still stays at the normal gain (Normal Gain) signal speed Down. In this way, when the defect detected by the Data Slicer is over, it cannot quickly catch up with the correct Slicing Level, so that the time for data errors cannot be effectively shortened, and improvement is urgently needed. [0003] For the described slic...

Claims

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Application Information

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IPC IPC(8): G11B25/04G11B33/08
Inventor 赖义麟周书弘
Owner VIA TECH INC