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Tracking tab method and device for optical recording media

An optical recording medium and bit-jumping technology, which is applied in optical recording/reproduction, data recording, recording information storage, etc., can solve problems such as tracking slipping, and achieve the effect of speeding up access time and reducing transition response

Inactive Publication Date: 2004-03-24
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, undesired mechanical noise may be the cause, problems such as tracking slippage may occur, and re-searching may occur

Method used

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  • Tracking tab method and device for optical recording media
  • Tracking tab method and device for optical recording media
  • Tracking tab method and device for optical recording media

Examples

Experimental program
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Embodiment Construction

[0033] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] That is to say, in precise inspection, according to the disc tracking situation, since the moving speed of the tracking regulator is not so fast, the tracking zero crossing (TZC) signal generated from the tracking error TE signal should not be attenuated. At the same time, if the tracking zero-closing TZC signal is amplified and shaped, the following figure 2 The waveform shown. The tracking zero closure TZC signal is an ON / OFF signal at the starting point of the tracking zero closure, so the tracking error TE signal can be obtained by slicing at the position of the tracking zero closure.

[0035] Then use something like figure 2 If the TZC signal is used, information on the position and speed of the tracking regulator can be obtained. Here, if one cycle of the tracking zero-closing TZC signal is DVD, it should be 0.74 μm (for CD, it is 1.6 μ...

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Abstract

The invention is a kind of track jump method and the device of light recording media, which uses track adjustor to complete track jump. When input track order, then drives track adjustor, determines the track driver rate and position, namely the feedback step, it generate continuously input according to position and rate information, and drives the driver continuously to target according to the continuous control signal, when minutely examining, it may move the track number freely. The invention uses fixed track zero closed TZC signal, carries on feed back according to the position and rate information.

Description

(1) Technical field [0001] The present invention relates to a tracking jumping method and its device for an optical recording medium, in particular to an optical recording medium in which the remaining tracking is formed and completed by using a tracking regulator to continue to search for the remaining tracking after the rough checking is completed. Tracking and jumping method and device. (2) Background technology [0002] The existing optical recording medium system, that is, the optical disc recording and playback device, is the same as CD (compactdisc), DVD (digital versatile disc), etc., using the optical disc as the recording medium to play the above-mentioned recorded data or record data on the above-mentioned optical disc. device. [0003] In addition, on the above-mentioned optical disc, the desired target location is searched, and the laser beam generated on the optical pick-up is correctly moved to the target tracking on the current tracking, and it must be track...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/085G11B21/10
Inventor 李珠瑛
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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