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21.发明专利Optical recording medium, and method for manufacturing optical recording medium 审中-公开光学记录介质，以及制造光记录介质的方法
公开(公告)号：JP2014035775A
公开(公告)日：2014-02-24
申请号：JP2012176227
申请日：2012-08-08
Inventor： IKUTA TOMOYA , MAEDA FUMISADA , SAITO KIMIHIRO , NAKAO TAKASHI , MIURA TAKAHIRO , SAKAKURA YOSHIAKI , SUMI YOJIRO
IPC: G11B7/24035 , G02B5/32 , G03H1/02 , G11B7/24 , G11B7/244 , G11B7/254 , G11B7/256 , G11B7/257 , G11B7/26
CPC classification number: G11B7/2572 , G11B7/24044 , G11B7/26 , Y10T428/2495 , Y10T428/31938
Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium and a method for manufacturing the optical recording medium, whereby a stable hologram can be formed.SOLUTION: An optical recording medium includes a first transparent film layer, a second transparent film layer, and a recording material layer that is sandwiched between the first transparent film layer and the second transparent film layer, and includes a hologram recording material.
Abstract translation: 要解决的问题：提供一种光学记录介质和一种用于制造光学记录介质的方法，由此可以形成稳定的全息图。解决方案：光学记录介质包括第一透明膜层，第二透明膜层和 记录材料层，其被夹在第一透明膜层和第二透明膜层之间，并且包括全息图记录材料。
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公开(公告)号：JP2010044847A
公开(公告)日：2010-02-25
申请号：JP2009041055
申请日：2009-02-24
Inventor： NAKAO TAKASHI , NAKANO FUMIAKI , NISHI NORIAKI , ANDO NOBUHIKO , NAKAGAWA HIROAKI , AMATAKU YUTAKA
CPC classification number: G11B7/1381 , G11B7/0903 , G11B7/131 , G11B7/1353 , G11B2007/0006 , G11B2007/0013
Abstract: PROBLEM TO BE SOLVED: To generate a light reception signal required for tracking control without being affected by interlayer stray light. SOLUTION: An optical disk device 190 calculates a tracking error signal STE3 according to expression (12). In expression (12), an optical pickup 197 removes, when a stray light layer distance dn is within a stray light layer distance range dh1, a rapidly increasing stray light component from a push-pull component by utilizing values obtained from stray light reception regions D52P and D52Q which are substantially proportional to the stray light component included in the push-pull component. As a result, even when the stray light layer distance dn is small and a lens shift occurs, the optical disk device 190 generates the tracking error signal STE3 having no influence of stray light patterns W formed from interlayer stray light beams LN from a plurality of recording layers Y, thereby achieving tracking control with high accuracy. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：产生跟踪控制所需的光接收信号，而不受层间杂散光的影响。 解决方案：光盘装置190根据表达式（12）计算跟踪误差信号STE3。 在表达式（12）中，光拾取器197当杂散光层距离dn在杂散光层距离范围dh1内时，通过利用从杂散光接收区域获得的值，去除来自推挽成分的杂散光分量 D52P和D52Q，其与包括在推挽组件中的杂散光分量基本成比例。 结果，即使当杂散光层距离dn较小并且发生透镜偏移时，光盘装置190生成对从多个层间杂散光束LN形成的杂散光图案W没有影响的跟踪误差信号STE3 记录层Y，从而以高精度实现跟踪控制。 版权所有（C）2010，JPO＆INPIT
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23.发明专利
公开(公告)号：JP2007188588A
公开(公告)日：2007-07-26
申请号：JP2006005654
申请日：2006-01-13
Inventor： YAMAMOTO KENJI , NAKAO TAKASHI
IPC: G11B7/135
Abstract: PROBLEM TO BE SOLVED: To provide a technique for removing astigmatism and accurately recording and reproducing information without redundancy in an optical disk device which uses a rising prism and includes an optical pickup device for dynamically correcting astigmatism. SOLUTION: A correction amount of spherical aberration is adaptively controlled by changing a divergent angle or a convergent angle of laser light made incident to the rising prism by moving a collimator lens 34a along the optical axis. However, the astigmatism occurs due to the rising prism 36. Moreover, this astigmatism changes according to the changes in the divergent angle or the convergent angle of the laser light. Therefore, the astigmatism caused by the rising prism 36 is removed by controlling an astigmatism correcting element 35 according to the changes in the divergent angle or the convergent angle of such laser light. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于在使用升序棱镜并且包括用于动态校正像散的光学拾取装置的光盘装置中消除散光并且无冗余地精确记录和再现信息的技术。 解决方案：通过沿着光轴移动准直透镜34a来改变入射到上升棱镜的激光的发散角或收敛角来自适应地控制球面像差的校正量。 然而，由于上升的棱镜36发生散光。此外，该像散根据激光的发散角或会聚角度的变化而变化。 因此，通过根据这种激光的发散角或收敛角的变化控制像散校正元件35，去除由上升棱镜36引起的像散。 版权所有（C）2007，JPO＆INPIT
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24.发明专利Optical information reproducing apparatus and method, and optical pickup device 审中-公开光学信息再现装置和方法以及光学拾取装置
公开(公告)号：JP2007066492A
公开(公告)日：2007-03-15
申请号：JP2006008991
申请日：2006-01-17
Inventor： ICHIMURA ISAO , NAKAO TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide an optical information reproducing apparatus and method, and an optical pickup device in which a high transfer rate of information can be obtained. SOLUTION: An output beam from a semiconductor laser 12 is switched to a condensed spot of an almost circular shape irradiating one information track or a condensed spot of an almost linear shape irradiating a plurality of information tracks by an optical element 14, so as to control irradiating output of the semiconductor laser 12 in accordance with a shape of the condensed spot. Then, reflected light in accordance with a shape of the condensed spot is received from an optical disk 11 by a light receiving element 28 divided in the direction corresponding to the condensed spot of almost linear shape, an error signal and/or a reproduced signal are generated based on this reflected light. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种光信息再现装置和方法，以及可以获得高传输速率的光拾取装置。 解决方案：将来自半导体激光器12的输出光束切换成几乎圆形的聚光点，照射由光学元件14照射多条信息轨道的几乎线状的信息轨道或聚光点，因此 以根据冷凝点的形状来控制半导体激光器12的照射输出。 然后，通过在与几乎线性形状的聚光点对应的方向上分割的光接收元件28从光盘11接收根据聚光点的形状的反射光，误差信号和/或再生信号为 基于这种反射光产生。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2006344296A
公开(公告)日：2006-12-21
申请号：JP2005169094
申请日：2005-06-09
Applicant: SONY CORP
Inventor： NAKAO TAKASHI , KAI SHINICHI , ICHIMURA ISAO
Abstract: PROBLEM TO BE SOLVED: To detect a DPD signal while attaining one push-pull system and dealing with an optical disc with a plurality of signal layers. SOLUTION: A photodetector 9 is divided into two track direction edge areas and a track direction middle area in the direction orthogonal to the track direction. Furthermore, the track direction middle area is divided into at least two in the direction orthogonal to the track direction and the photodetector 9 is further divided into two in parallel with the track direction. Consequently, two light receiving areas E, F are formed in the edge areas in the track direction at the upper side in a figure, two light receiving areas H, G are formed in the edge areas in the track direction at the lower side in the figure, and light receiving areas A to D are formed in the track direction middle area. This invention can be applied to the optical disk device capable of at least either one of reproducing or recording. COPYRIGHT: (C)2007,JPO&INPIT
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Patent Agency Ranking
公开(公告)号：JP2000011398A
公开(公告)日：2000-01-14
申请号：JP17370598
申请日：1998-06-19
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide device and method for recording/reproducing optical information easily detecting a tracking error by plural spots. SOLUTION: The optical information recording/reproducing device is provided with a hologram element 9a diffracting ±1st-order diffracted beams so as to focus on front/rear of an optical axial direction for a focal position of a 0-order diffracted beam, a prism bisecting luminous flux consisting of the ±1st-order diffracted beams and the 0-order diffracted beam symmetrically with the direction nearly parallel to a track and a photodetector 10 provided in the vicinity of the focal position of the 0-order diffracted beam by the hologram element 9a in its optical system. Then, the 0-order diffracted beam of the hologram element 9a forms six spots on the photodetector 10, and since the tracking error is detected using these six detection signals, the tracking error is detected easily by plural spots such as a DPP method, which is difficult usually.
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公开(公告)号：JPH06124503A
公开(公告)日：1994-05-06
申请号：JP12768091
申请日：1991-05-30
Applicant: SONY CORP
Inventor： KABAYA YOSHITERU , NARAHARA TATSUYA , NAKAO TAKASHI , OSUE TADASHI
IPC: G11B15/093 , G11B15/60
Abstract: PURPOSE:To prevent the damage of a magnetic tape and a tape travelling system and to improve the reproduction compatibility. CONSTITUTION:An actuator 23 of a tape guide is servo-controlled and a flange 21 is displaced upward and downward. At the time of reproduction, reference signals f1-f3 deeply recorded on a tape 1 are reproduced. A band-pass filter and a differential amplifier and a switch generate a tracking error signal. An actuator 23 is controlled through a phase compensator drive amplifier and the tape 1 is controlled to be located at the optimum place. At the time of fast forwarding and rewinding, the prescribed bias value is applied to the drive amplifier through the switch. The actuator 23 is driven to expand a tape travelling channel.
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公开(公告)号：JPH05250721A
公开(公告)日：1993-09-28
申请号：JP5081992
申请日：1992-03-09
Applicant: SONY CORP
Inventor： OSUE TADASHI , KABAYA YOSHITERU , KUMAI SATOSHI , NARAHARA TATSUYA , NAKAO TAKASHI
Abstract: PURPOSE:To obtain an optical recorder/reproducer having simplified constitution and additionally provided with verify function. CONSTITUTION:A light beam LA1 from a light source is introduced to a beam splitter 10 in a rotary drum 8 where it is branched to two subbeams which finally advance on optical paths, shifted by 180 deg. from each other, and focused on an optical tape 15. When one light beam LA2 is used for recording data, the other light beam LA3 is used for verification. A photodetector 22 detects reproduced data at the time of reproduction and verification.
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公开(公告)号：JPH03113756A
公开(公告)日：1991-05-15
申请号：JP24647489
申请日：1989-09-25
Applicant: SONY CORP
Inventor： KABAYA YOSHITERU , NARAHARA TATSUYA , NAKAO TAKASHI , MIYOSHI HIROSHI
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE:To reduce the size and weight of the small magneto-optical recording and reproducing head and to save the electric power thereof by constituting the head in such a manner that a coil for external magnetic fields adopted to impress the external magnetic fields to an magneto-optical recording medium can be moved integrally with an objective lens. CONSTITUTION:The coil 2 for external magnetic fields is provided at the position on the immediate outer side of the objective lens 1 of a lens barrel 3 mounted with the objective lens 1. The concentrical impression of the external magnetic fields to the position where the lens 1 focuses is possible in this way. The lens barrel 3 is supported to a movable part 4 of a focus control driving mechanism. The coil 2 is integrated with the lens 1 by such constitution and is the objective of focus servo. The magneto-optical recording and reproducing head which is controlled to always the constant distance with the recording surface of the recording carrier is obtd. The magneto-optical recording and reproducing head which is small in size and weight and consumes less electric power is obtd. in this way.
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公开(公告)号：JPH03100921A
公开(公告)日：1991-04-25
申请号：JP23560689
申请日：1989-09-13
Applicant: SONY CORP
Inventor： NARAHARA TATSUYA , KUMAI SATOSHI , NAKAO TAKASHI , OSATO KIYOSHI
Abstract: PURPOSE:To make a pitch fixed between tracks to be recorded by various heads by irradiating a multispot and executing recording while executing tracking control with the already recorded track as a reference. CONSTITUTION:At first, a tape is scanned by an A head and when tracks a11-a14 to be shown by real lines are formed by spots sa1-Sa4 a head B next executes scanning so that the track can be formed between the tracks a14 and a13 by a spot Sb1 in an end part. Namely, since an interval between the tracks a13 and a14 is defined as a guide interval, side spots Ss and Ss of the spot Sb1 are irradiated so as to be spread over the tracks a14 and a13 and a tracking error signal is obtained by the reflected light. Then, tracking servo is loaded. Since spots Sb2-Sb4 are outputted from the same optical system as the spot Sb1, the positions are controlled in the same way as the spot Sb1. Tracks b14 and b13 are irradiated by the scan of the B head, and the recording is executed while executing the tracking control by the reflected light from the side spots Ss and Ss of the spot Sa1.
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