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Method for improving oscillation interference

A technology of optical discs and power, which is applied in optical recording/reproduction, instruments, optical recording carriers, etc., and can solve the problems that optical read-write devices cannot smoothly read signals at the back end, and read signal distortions, etc.

Inactive Publication Date: 2010-07-21
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this kind of wobble interference will make the optical read-write device unable to smoothly carry out the action of reading the signal at the back end, or cause the distortion of the read signal, therefore, how to develop and improve the above-mentioned wobble interference is the main purpose of the development of the present invention

Method used

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  • Method for improving oscillation interference
  • Method for improving oscillation interference
  • Method for improving oscillation interference

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Embodiment Construction

[0049] When controlling the optical read-write head to read a blank Super-RENS disc, although the blank Super-RENS disc originally had a wobble structure, it was found that the read signal did not have wobble-like interference. Therefore, before writing this blank Super-RENS disc, it is known that the groove track and the land track have the same reflectivity, even if there is a wobble (Wobble) structure, no wobble-like interference will be found on the read data signal .

[0050] Since such wobble interference is caused by the difference in reflectivity between the groove and the land, the uniformization of the reflectance of the groove and the land, that is, the reduction of the reflectivity difference between the groove and the land, will It can effectively improve the impact of such swing interference.

[0051] See Figure 7 , which is a flowchart of a preferred embodiment of the present invention. First, start the optical disc drive and insert a blank optical disc (ste...

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Abstract

The present invention provides an improving swing interference method, applied in an optical reading head and an optical disk, including following steps: the optical reading head emits laser beam of the first power to the first sort track on the surface of the optical disk to write in data, and the optical reading head emits the laser beam of the second power to the second sort track on the surface of the optical disk to reduce the difference of reflectivity between the first sort track and the second sort track.

Description

technical field [0001] The invention relates to a method for improving wobble-like interference, in particular to an improved wobble-like interference method applied to a super-resolution near-field optical disk. Background technology [0002] Compact Disc has the advantages of portability, high compatibility, and long service life. Its positioning is mostly in data backup and multimedia applications, and its capacity is also changed from 650MB (Mega-Byte) CD-ROM, below CD-ROM disc for short), upgraded to 4.7GB (Giga-Byte) digital video disc (Digital Video Disc, hereinafter referred to as DVD disc). In response to the development of high-definition TV (High-Definition TV) to meet the needs of multimedia and high-definition video, the capacity for recording 133 minutes of video needs to be 25GB; and the capacity required for future 3D movies needs to be more than 100GB, so as With the development of the multimedia world, continuous improvement of recording density and capaci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/095G11B7/007
Inventor 吴佳哲
Owner LITE ON IT