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Optical disc recording apparatus, controlling method of the same, and optical disc recording method

一种光盘记录、控制方法的技术，应用在光学记录/再现/擦除方法、光学记录头、用光学方法记录/重现等方向，能够解决不可能确定记录/再现设备记录多少信息、无法确定记录、不可能确定记录/再现设备等问题

Inactive Publication Date: 2009-08-19
KK TOSHIBA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, it is impossible to determine at which gray level the recording / reproducing device can perform recording, that is, it is impossible to determine how much information the recording / reproducing device can record on the optical disc.
[0010] In addition, when another recording / reproducing device reproduces the optical disc, the other recording / reproducing device cannot determine at which grayscale level each pixel of the hologram recorded in the optical disc is recorded.

Method used

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  • Optical disc recording apparatus, controlling method of the same, and optical disc recording method
  • Optical disc recording apparatus, controlling method of the same, and optical disc recording method
  • Optical disc recording apparatus, controlling method of the same, and optical disc recording method

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Embodiment Construction

[0027] An optical disc recording device, an optical disc recording method and an optical disc applied therein according to preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] First, a holographic optical disc as an optical disc according to a first embodiment of the present invention will be described. A holographic optical disc is an optical disc capable of recording, as a hologram, an interference fringe pattern of alternating light and dark fringes generated by interference between an information beam and a reference beam. figure 1 is a cross-sectional view of the hologram disc according to the first embodiment. Such as figure 1 As shown, the holographic optical disc according to the first embodiment has the following structure: a transparent gap layer 103, a dichroic mirror layer 104, a transparent gap layer 105, a hologram recording medium layer 106 serving as an information recording layer, and a p...

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Abstract

An optical disc recording device and method utilizes a recording beam source, modulates a recording irradiation beam into an information beam carrying information and a spatial light modulator for a reference beam, focuses the information beam and the reference beam onto a focusing unit on an information recording layer, and detects the information beam An image sensing device for the intensity distribution, and a control unit. The control unit controls the spatial light modulator on the basis of the intensity distribution detected by the image sensing device. A recording / reproducing device can check the amount of information that can be recorded on an optical disc, as well as the optical disc used for the device.

Description

[0001] Cross-references to related applications [0002] This application is based upon and claims the benefit of priority from a prior Japanese Patent Application No. 2006-053600 filed on February 28, 2006, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to an optical disc recording apparatus that records information as a hologram on an optical disc, a method of controlling the optical disc recording apparatus, and an optical disc recording method. Background technique [0004] Recently, a high-density optical disc of a large-capacity recording type employing holograms (hereinafter referred to as a "holographic disc") and a recording / reproducing apparatus for the holographic disc have been developed and put into practical use. The holographic disc recording method is to record the information by interfering the information beam with the image and the reference beam used for recording on the photosensi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/0065
CPCG11B7/083G11B7/126G11B7/0938G11B7/0065G11B7/24044G11B7/1398G11B7/128
Inventor 矢尾板明子松本一纪平尾明子立田真一
Owner KK TOSHIBA