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Near field mode data recording/playing method and apparatus thereof

A data recording, data technology, applied in data recording, optical recording/reproducing, recording through near-field interaction, etc., can solve problems such as the limitation of recording density

Inactive Publication Date: 2004-09-01
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the spot size of the laser light on the recording medium on which bits are formed on the recording film of the recording medium is restricted by the reflex limit, there is a limit to improving the recording density.

Method used

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  • Near field mode data recording/playing method and apparatus thereof
  • Near field mode data recording/playing method and apparatus thereof
  • Near field mode data recording/playing method and apparatus thereof

Examples

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Embodiment Construction

[0031] Hereinafter, according to the accompanying drawings, the embodiments of the method for recording or playing data in the near field mode and the device thereof according to the present invention are described in detail as follows.

[0032] see image 3 , 4 , image 3 In order to be applicable to the graph shown in the light pulse frequency and light intensity of the method for recording or playing data in the near field mode of the present invention and the device thereof compared with the prior art, Figure 4 It is a graph showing the temperature change of each layer of the optical disc when the method and device for recording or playing data in the near field mode of the present invention are used for recording.

[0033] Such as figure 1 The shown method for recording or playing data in the near field of the present invention and its device include an optical vibration unit 1, a laser diode drive unit 2, a laser diode 3, a light-collecting objective lens 4, a spectr...

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Abstract

The invention relates approach field mode data recording and recovering method and its device. The invention injects approach field light onto the recording media to record and play data, the light generated by the light vibrating part and injected to the recording media makes the density of the approach field light to promote the temperature needed by recording or playing data, it uses different control method in light vibrating period and the vibration stop period, the temperature for recording or playing data in the recording media can upgrade the density of approach field light. The laser with different control part and the density set by the light control part can upgrade the temperature needed by disk recording layer, but it can decrease the temperature of the disk surface.

Description

(1) Technical field [0001] The present invention relates to an optical recording / playback method and its device, especially to reduce the surface temperature of the optical disc by minimizing the laser output time in the adjacent field mode, so as to prevent the coating material from heating up and the objective lens contamination caused by it in advance. A near-field data recording / playing method and device thereof. (2) Background technology [0002] In general, optical recording media or magneto-optical recording media need to reduce bit (or recording unit) and track width in order to have high density recording capacity. However, since the spot size of the laser light on the recording medium on which bits are formed on the recording film of the recording medium is restricted by the reflex limit, there is a limit to improving the recording density. [0003] Contrary to the trend of large-capacity data, a new optical recording / playback method that can overcome the limitati...

Claims

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Application Information

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IPC IPC(8): G11B7/00G11B11/24
Inventor 李廷旭李忠禹
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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