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Interlamination moving control method in multilayer optical disk recording/playback device and device thereof

A technology for moving and recording layers between layers, which is applied in optical recording/reproduction, data recording, recording information storage, etc., and can solve the problems of long-term and unrealistic storage of high-speed data

Inactive Publication Date: 2008-04-30
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] When performing the above stop motion and rotation motion, it takes several seconds to switch layers, which means that layer switching takes a long time
If the information between the layers is closely related to each other, there may be a considerable part of the gap in the playback data, or in order to eliminate the gap in the signal, it is necessary to store a data buffer for several seconds of data, but in fact, saving high-speed data in a few seconds is not enough. too realistic

Method used

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  • Interlamination moving control method in multilayer optical disk recording/playback device and device thereof
  • Interlamination moving control method in multilayer optical disk recording/playback device and device thereof
  • Interlamination moving control method in multilayer optical disk recording/playback device and device thereof

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Embodiment Construction

[0055] Embodiments of the interlayer movement control method and control device of the multi-layer optical disc recording / playing device and the multi-layer optical disc of the present invention will be further described below with reference to the accompanying drawings.

[0056] Figure 6 It is a schematic diagram explaining the focusing method in the rotation state of the present invention. The frequency generation signal FG and the image of the rotational displacement on Fig. and above Figure 5b same.

[0057] exist Figure 6 The positional fluctuation of the focus mirror is controlled by the focus control signal FCS detected based on the rotation phase, and the dotted line representing the ideal focus state indicates that the focus servo system determines that the disc surface vibration that occurs when the disc rotates is in an ideal state. Changes in the position of the focusing lens. In the actual system, the focus servo system maintains a small error and maintains...

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Abstract

A method and device for controlling the interlayer transfer in a multi-layer optical disk recording / playing equipment are disclosed. Said method includes confirming the layer transfer demand, detecting the focus rotation position variation, adding the rotation position variation to focus control signal for focus control, setting up the rotation speed of destination layer and its laser, and focusing the laser on said destination layer. It can shorten the transfer time.

Description

technical field [0001] The present invention relates to a multi-layer disk (multi-layer disk) recording / playing device, in particular to a multi-layer disk that can quickly focus the magnifying objective lens of an optical pickup (Pick-up) on the layer to be played when playing a multi-layer disk. Disclosed are a method for controlling movement between layers of an optical disc and a control device thereof. Background technique [0002] Optical disc media have developed from CD to playback-specific specifications such as CD-DA and CD-ROM, and then to recording specifications such as CD-R and CD-RW. Moreover, the recording capacity has also been developed from the CD series to the DVD series in synchronization with the development of laser diodes. Because of the coexistence of CD and DVD, it has become common for the structure of playing DVD to be able to play the disc media of the previous CD series. In particular, recently, a hybrid disc that allows both DVD and CD to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/09G11B7/00
Inventor 崔万出
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI