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1. 发明专利

JP2018041524A ホログラム再生装置およびホログラム再生方法审中-公开
公开(公告)号：JP2018041524A
公开(公告)日：2018-03-15
申请号：JP2016175650
申请日：2016-09-08
申请人：日本放送協会
发明人：片野祐太郎 , 室井哲彦 , 木下延博
IPC分类号： G11B7/005 , G03H1/28 , G11B7/128 , G11B7/131 , G11B7/1395 , G11B7/0065
摘要：【課題】クロストークノイズとして他のページデータが重畳された再生ページデータから、クロストークノイズ成分を除去し得るホログラム再生装置およびホログラム再生方法を提供する。【解決手段】記録媒体11に記録された第1ページデータ像情報を担持した第1再生光と、記録媒体11に記録された第2ページデータ像情報を担持した第2再生光の各光路が少なくとも一部において共通化され、第2ページデータ像情報による第2ページデータ画像に第1ページデータ像情報によるノイズ画像が混入してクロストークが生じている場合に、ページデータ画像の一部領域の明るさに対する、ノイズ画像の該一部領域に対応する一部領域の明るさの比率αに基づき、ノイズ画像全体の明るさを求め、第2ページデータ画像からノイズ画像を減算する演算処理手段61を備えている。【選択図】図1

2. 发明专利

JPWO2011086951A1 光ヘッド装置及び光ディスク装置有权
公开(公告)号：JPWO2011086951A1
公开(公告)日：2013-05-20
申请号：JP2011545565
申请日：2011-01-17
申请人：三菱電機株式会社
发明人：篠田　昌久 , 昌久篠田 , 宏勲中原 , 宏勲中原 , 正幸大牧 , 正幸大牧 , 中井　賢也 , 賢也中井 , 伸夫竹下 , 伸夫竹下
IPC分类号： G11B7/135 , G11B7/131 , G11B7/1353 , G11B7/1392 , G11B7/1395
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要：光ディスク装置に搭載される光ヘッド装置(3)は回折光学素子(21)と光検出器(22)とを備える。回折光学素子(21)は、反射回折光ビームの0次光成分の一部と反射回折光ビームの±1次光成分とが入射する位置に配置される主回折領域(210)と、反射回折光ビームの±1次光成分が入射せず、反射回折光ビームの0次光成分の他の一部が入射する位置に配置される副回折領域(211A,211B)とを含む。光検出器(22)の主受光部(23)は、主回折領域(210)及び副回折領域(211A,211B)を透過した透過回折光ビームの0次光成分を受光する。副受光部(24,25)は、副回折領域(211A,211B)を透過した透過回折光ビームの+1次光成分及び−1次光成分の少なくとも一方を受光する。

3. 发明专利

JP2010020890A Apparatus for reading from optical recording medium 审中-公开
标题翻译：从光学记录介质读取的装置
公开(公告)号：JP2010020890A
公开(公告)日：2010-01-28
申请号：JP2009155940
申请日：2009-06-30
申请人： Thomson Licensing , トムソンライセンシングThomson Licensing
发明人： WINTER MARCO , GANDOLPH DIRK , SCHEWZOW ANDREJ
IPC分类号： G11B7/005 , G11B7/09 , G11B7/127 , G11B7/1395
CPC分类号： G11B7/005 , G11B7/127 , G11B7/1395
摘要： PROBLEM TO BE SOLVED: To provide an improved apparatus for reading from an optical recording medium having a high data density. SOLUTION: The apparatus for reading from the optical recording medium, more specifically, the apparatus for reading from an optical recording medium having a high data density, includes a light source for generating a first light beam, a means for generating a second light beam, one or more means for focusing the first light beam and the second light beam onto the optical recording medium to form a first light spot and a second light spot, wherein the second light spot is larger than the first light spot and physically and/or virtually encompasses the first light spot, one or more detectors for detecting a first light beam and a second light beam reflected by the optical recording medium, and a means for generating a data signal from a difference between the detected first and second reflected light beams. The second light beam includes wavelength different from that of the first light beam. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于从具有高数据密度的光学记录介质读取的改进的装置。解决方案：用于从光学记录介质读取的装置，更具体地说，用于从具有高数据密度的光学记录介质读取的装置包括用于产生第一光束的光源，用于产生第二光束的装置光束，用于将第一光束和第二光束聚焦到光学记录介质上以形成第一光点和第二光点的一个或多个装置，其中第二光点大于第一光点，物理和 /或虚拟地包围第一光点，用于检测由光记录介质反射的第一光束和第二光束的一个或多个检测器，以及用于根据检测到的第一和第二反射光之间的差异产生数据信号的装置梁。第二光束包括与第一光束不同的波长。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2003257052A EXPOSURE APPARATUS, EXPOSURE METHOD, RECORDING AND/OR REPRODUCING DEVICE AND METHOD 审中-公开
公开(公告)号：JP2003257052A
公开(公告)日：2003-09-12
申请号：JP2002054837
申请日：2002-02-28
申请人： SONY CORP
发明人： IMANISHI SHINGO
IPC分类号： G11B7/09 , G02B26/08 , G03F7/20 , G11B7/125 , G11B7/1275 , G11B7/135 , G11B7/1362 , G11B7/1372 , G11B7/1374 , G11B7/1378 , G11B7/1387 , G11B7/1392 , G11B7/1395 , G11B7/1398 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To provide an exposure apparatus, an exposure method, recording and/or reproducing device and method in which gap control can precisely and stably be performed in exposing or in recording/reproducing information signals with the use of proximity light. SOLUTION: A laser beam Lg for gap detection having a wavelength different from that of a laser beam La for exposure is made incident on a converging lens 23 by adjusting a convergence angle α with a convergence angle adjusting lens group 16. As a result, the chromatic aberration of the converging lens 23 can be corrected. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2001291270A HIGH DENSITY RECORDING/REPRODUCING COMPATIBLE TYPE OPTICAL PICKUP DEVICE 失效
公开(公告)号：JP2001291270A
公开(公告)日：2001-10-19
申请号：JP2001057364
申请日：2001-03-01
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM TAE-KYUNG , CHUNG CHONG-SAM , AHN YOUNG-MAN , SUH HEA-JUNG
IPC分类号： G02B5/18 , G02B5/30 , G02B5/32 , G11B7/00 , G11B7/005 , G11B7/125 , G11B7/135 , G11B7/1392 , G11B7/1395
摘要： PROBLEM TO BE SOLVED: To provide a high density recording/reproducing compatible type optical pickup device wherein optical disks different in format are interchanged by one objec tive lens. SOLUTION: The device is provided with a first light branching means which includes a first light source 11 for a first format disk, a second light source 21 for a second format disk and the objective lens suitable for the first format optical disk and an optical wavelength radiated from the first light source and which branches incident light into first light and second light, a second photodetector 29 having a first light receiving part and a second light receiving part which respectively receive the first light and the second light to be reflected while irradiating the optical disk from the second light source and performs photoelectric conversion, and a second signal processing part 20 which corrects a chromatic aberration by the difference of wavelengths of light radiated from the first light source an the second light source and/or a spherical aberration by the difference of substrate thickness between the first and second format optical disks based on a signal detected via the first light receiving part and the second light receiving part and which detects a reproduced signal of the second format optical disk.

6. 发明专利

JPH077510B2 失效
公开(公告)号：JPH077510B2
公开(公告)日：1995-01-30
申请号：JP13507588
申请日：1988-05-31
IPC分类号： G02B7/00 , G11B7/08 , G11B7/135 , G11B7/1395

7. 发明专利

JP6134738B2 光情報記録再生装置、光情報記録再生方法有权
公开(公告)号：JP6134738B2
公开(公告)日：2017-05-24
申请号：JP2014551780
申请日：2012-12-12
申请人：日立コンシューマエレクトロニクス株式会社
发明人：田口博文 , 藤田浩司 , 中井伸郎 , 西村孝一郎 , 星沢拓 , 山崎和良
IPC分类号： G11B7/1381 , G11B7/1369 , G11B7/1395 , G11B7/0065
CPC分类号： G11B7/0065 , G11B7/127 , G11B7/1381 , G11B7/1395

8. 发明专利

JP2003242674A OPTICAL PICKUP DEVICE 审中-公开
公开(公告)号：JP2003242674A
公开(公告)日：2003-08-29
申请号：JP2002034871
申请日：2002-02-13
申请人： PIONEER ELECTRONIC CORP
发明人： TOMIZAWA ISAO , MINAGAWA NOBORU , HASHIMOTO KAZUNOBU , IZAWA MASATAKA , SUGIURA SATOSHI
IPC分类号： G11B7/09 , G11B7/00 , G11B7/12 , G11B7/124 , G11B7/1275 , G11B7/131 , G11B7/135 , G11B7/1353 , G11B7/1359 , G11B7/1362 , G11B7/1395
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup device which eliminates the needs of a complicated adjustment operation and can be made small and thin. SOLUTION: This optical pickup device is provided with a semiconductor laser 1, a half-mirror 5 and a photodetector 6 and reads information recorded on an optical disk. The semiconductor 1 and the half-mirror 5 are mutually attached through a grating 3, and the photodetector 6 is attached onto the surface of the half-mirror 5. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2002123161A HOLOGRAM RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2002123161A
公开(公告)日：2002-04-26
申请号：JP2000316117
申请日：2000-10-17
申请人： PIONEER ELECTRONIC CORP
发明人： ITO YOSHINAO , MATSUSHITA HAJIME
IPC分类号： G03H1/26 , G03H1/04 , G03H1/16 , G03H1/22 , G11B7/0065 , G11B7/125 , G11B7/1275 , G11B7/128 , G11B7/135 , G11B7/1395
摘要： PROBLEM TO BE SOLVED: To provide a hologram recording and reproducing device which can be downsized. SOLUTION: The hologram recording and reproducing device has a supporting means which freely mountably holds and rotates a recording medium consisting of a photorefractive crystal having a parallel flat plate shape, a reference light means which makes a coherent recording reference light beam incident on the main surface of the recording medium, a signal light means which makes the coherent signal light beam modulated according to image data incident on the recording medium and intersects this beam with the recording reference light beam within the recording medium to form the refractive index grating of the light interference patterns of the signal light beam and the recording reference light beam, a means which makes the coherent reproducing reference light beam propagated in an opposite direction coaxially with the recording reference light beam incident on the recording medium and generate phase conjugation waves from the refractive index grating of the light interference patterns, a detecting means which separates the phase conjugation waves from the optical path of the signal light beam and a detecting means which detects the image data formed by the phase conjugation waves.

10. 发明专利

JP2002025082A METHOD AND DEVICE FOR OPTICAL PICKUP AND OPTICAL INFORMATION PROCESSOR 失效
公开(公告)号：JP2002025082A
公开(公告)日：2002-01-25
申请号：JP2000203860
申请日：2000-07-05
申请人： RICOH KK
发明人： FUJITA KAZUHIRO , FUNATO HIROYOSHI , KOIDE HIROSHI
IPC分类号： G11B7/00 , G11B7/09 , G11B7/125 , G11B7/13 , G11B7/131 , G11B7/135 , G11B7/1353 , G11B7/1378 , G11B7/1392 , G11B7/1395
摘要： PROBLEM TO BE SOLVED: To effectively prevent or reduce a deterioration of precision in tracking control accompanied by correcting a spherical aberration in an optical pickup device wherein tracking control by a sub-spot system is performed and the spherical aberration generated in accordance with a deviation of the thickness of a substrate is corrected. SOLUTION: The spherical aberration caused by the deviation of the thickness of the substrate 11 of an optical information recording medium 10 is corrected by changing the shape of a luminous flux making incident on an objective lens 6 from a light source 1 side, and also positions of two sub-spots are corrected by displacing a grating 2 so that a proper track error signal is obtained.

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