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1. 发明专利

JP2006059428A Photodetector and optical disk apparatus 有权
标题翻译：光电设备和光盘设备
公开(公告)号：JP2006059428A
公开(公告)日：2006-03-02
申请号：JP2004239126
申请日：2004-08-19
申请人： Sony Corp , ソニー株式会社
发明人： MANO KIYOSHI , TAKASE FUTOHIRO
IPC分类号： G11B7/13
摘要： PROBLEM TO BE SOLVED: To improve S/N of a reproduction signal by reducing amplifier noise of a reproduction signal detecting system without complexing an optical system. SOLUTION: In a PDIC irradiating an optical disk with one beam and performing photoelectric conversion of reflected light, when an optical disk being rewritable is played back, output signals of photodetectors O, P, Q, R are added by using a switch SW-P, switch SW-Q and switch SW-R as a terminal 1 respectively, this addition result (reproduced signal) is current-voltage-converted by a photoelectric conversion amplifier IV-amp 4A and outputted. Thereby, the used photoelectric conversion amplifier can be made to be 1/4 compared with the conventional case in which output signals of the photodetectors O, P, Q, R are photoelectric-converted by the photoelectric conversion amplifier IV-amp 1A to photoelectric conversion amplifier IV-amp 4A and added, amplifier noise of an reproduction signal detecting system is reduced and S/N of the reproduction signal can be improved without complexing the optical system. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过降低再现信号检测系统的放大器噪声而不使光学系统复杂化，来提高再现信号的S / N。解决方案：在PDIC中照射具有一个光束的光盘并进行反射光的光电转换时，当可重写光盘被重放时，光电检测器O，P，Q，R的输出信号通过使用开关 SW-P，开关SW-Q和开关SW-R分别作为端子1，该相加结果（再现信号）由光电转换放大器IV-放大器4A进行电流电压转换并被输出。由此，与光电检测器O，P，Q，R的输出信号被光电转换放大器IV-放大器1A光电转换为光电转换的传统情况相比，所使用的光电转换放大器可以为1/4 放大器IV-放大器4A，并且增加了再现信号检测系统的放大器噪声，并且可以在不使光学系统复杂化的情况下提高再现信号的S / N。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2009043306A Optical pickup and optical disk drive 审中-公开
标题翻译：光学拾取和光盘驱动器
公开(公告)号：JP2009043306A
公开(公告)日：2009-02-26
申请号：JP2007204465
申请日：2007-08-06
申请人： Sony Corp , ソニー株式会社
发明人： TAKASE FUTOHIRO , SEO KATSUHIRO , OKAMOTO YOSHIKI , KOBAYASHI TAKASHI
IPC分类号： G11B7/135 , G11B7/09 , G11B7/13
摘要： PROBLEM TO BE SOLVED: To detect an amount of light of stray light OB between layers by sub-beam detectors 63 and 64 with a high degree of accuracy. SOLUTION: A straight line which is made inclined only by a tilt angle β from a tangential direction can be irradiated with a main beam MB and sub-beam SB on optical disk 100 by setting up a reference line SL in a diffraction grating DL in a state inclined only by a tilt angle β from a radial direction. In an optical disk drive 10, a main beam detector 62, and sub-beam detectors 63 and 64 in a photodetector 60 are arranged on a straight line which is made inclined only by the tilt angle β. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过子光束检测器63和64以高精度检测层之间的杂散光OB的光量。解决方案：通过在衍射光栅中设置参考线SL，可以用光束100上的主光束MB和子光束SB照射从切线方向倾斜到倾斜角β的直线 DL处于仅从径向倾斜角度β的状态。在光盘驱动器10中，光束检测器60中的主光束检测器62和子光束检测器63和64布置在仅由倾斜角β倾斜的直线上。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2007052842A Optical pickup device and optical disk drive 有权
标题翻译：光学拾取器件和光盘驱动器
公开(公告)号：JP2007052842A
公开(公告)日：2007-03-01
申请号：JP2005236437
申请日：2005-08-17
申请人： Sony Corp , ソニー株式会社
发明人： TAKASE FUTOHIRO
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To remove unnecessary currents such as currents caused by the stray light from the current obtained by receiving the signal light without degrading the high frequency characteristics and without increasing the photo detectors. SOLUTION: In an optical pickup device, the photo detector 1 is provided for cancellation at a position outside the optical axis of the signal light, besides the photo detector 4 for detecting signals. Considering that the dark current of the photo detector 1 and the photo-electric current by stray light are large and almost equal to the output of the photo detector 4, the output current of the cancellation photo detector 1 is converted into a voltage in the current-voltage converter-amplifier circuit 2 and the level of this voltage is adjusted in the amplifier circuit 3 to obtain a reference voltage 300. When converting the current of the photo detector 4 into a voltage in the current-voltage converter-amplifier circuit 5, the above reference voltage 300 is subtracted from the output voltage of the photo detector 4 to achieve the solution of the problem. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了消除由于通过接收信号光而获得的电流而引起的杂散光的不必要电流，而不降低高频特性，并且不增加光检测器。解决方案：在光学拾取装置中，除了用于检测信号的光电检测器4之外，光检测器1被提供用于在信号光的光轴外的位置处的取消。考虑到光检测器1的暗电流和杂散光的光电流大，并且几乎等于光检测器4的输出，消除光检测器1的输出电流被转换成电流电压转换器 - 放大器电路2，并且在放大器电路3中调节该电压的电平以获得参考电压300.当将光电检测器4的电流转换成电流 - 电压转换器 - 放大器电路5中的电压时，从光检测器4的输出电压中减去上述参考电压300，以实现问题的解决。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2011003257A Optical pickup and optical disk device 审中-公开
标题翻译：光学拾取和光盘设备
公开(公告)号：JP2011003257A
公开(公告)日：2011-01-06
申请号：JP2009147835
申请日：2009-06-22
申请人： Sony Corp , ソニー株式会社
发明人： TAKASE FUTOHIRO , SEO KATSUHIRO , KOBAYASHI TAKASHI
IPC分类号： G11B7/13 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To raise precision of tracking control with a simple configuration.SOLUTION: An optical pickup 17 receives a reflected light beam L2T by light-receiving areas RA-RD of a light-receiving part 32, and generates light-receiving signals SA-SD according to the respective quantities of received light. In the meanwhile, the light-receiving part 32 receives half of the components of a push-pull area PP2 via the light-receiving areas RA and RD, half of the components of a push-pull area PP1 via the light-receiving areas RB and RC, and half of the components of recording border areas BD1 and BD2 via the light-receiving areas RA and RC. Consequently, an optical disk device 10 can indicate a difference of the components attributable to the push-pull areas PP1 and PP2 by carrying out the operation of (SA+SD)-(SB+SC), and generate a tracking error signal STE that offsets both of the components attributable to the recording border areas BD1 and BD2.
摘要翻译：要解决的问题：以简单的结构提高跟踪控制的精度。解决方案：光学拾取器17由受光部分32的受光区域RA-RD接收反射光束L2T，并产生光接收信号 SA-SD根据接收光的相应数量。同时，光接收部分32经由光接收区域RA和RD接收推挽区域PP2的分量的一半，经推拉区域PP1的一部分经由光接收区域RB 和RC，以及经由受光区域RA和RC的记录边界区域BD1和BD2的分量的一半。因此，通过执行（SA + SD） - （SB + SC）的操作，光盘装置10可以指示归因于推挽区域PP1和PP2的分量的差异，并且生成跟踪误差信号STE，偏移归因于记录边界区域BD1和BD2的两个组件。

5. 发明专利

JP2008140422A Optical pickup and optical disk drive using the same 审中-公开
标题翻译：使用相同的光学拾取和光盘驱动器
公开(公告)号：JP2008140422A
公开(公告)日：2008-06-19
申请号：JP2006322498
申请日：2006-11-29
申请人： Sony Corp , ソニー株式会社
发明人： OKAMOTO YOSHIKI , SEO KATSUHIRO , KOBAYASHI TAKASHI , TAKASE FUTOHIRO
IPC分类号： G11B7/13 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To prevent the generation of a noise component in a detection signal caused by a difference in the reflectivity of a recording part and a non-recorded part when the vicinity of a boundary of a recording part and a non-recorded part of the other recording layers which is different from a focus recording layer is irradiated with an optical beam and the reflected optical return beam is entered to a light-receiving part. SOLUTION: An optical pickup 7 which performs the recording/reproduction of information to an optical disk having one or a plurality of recording layers in the incident direction of the optical beam is equipped with; a diffraction element 32 which diffracts the optical beam emitted from a light source 31 and splits it into a main beam and a side beam; and an optical detector 34 which has a main light-receiving part which receives the main beam out of return light from the optical disk 2 and a sub-receiver which receives the side beam. The sub-receiving part is split by a split line at least a part of which is inclined toward a first direction corresponding to the radial direction of the optical disk and a second direction which is orthogonal to the first direction. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了防止在记录部分和非记录部分的边界附近由记录部分和非记录部分的反射率差引起的检测信号中的噪声分量的产生 - 与光记录层不同的其它记录层的记录部分被光束照射，反射光返回光束进入光接收部分。解决方案：在光束的入射方向上对具有一个或多个记录层的光盘执行信息的记录/再现的光学拾取器7装备有：衍射元件32，其衍射从光源31发射的光束并将其分裂成主光束和侧光束; 以及光检测器34，其具有从光盘2接收除了主光束的主光束的主光接收部分和接收侧光束的副接收器。副接收部分被分割线分开，其中至少一部分的分割线朝着与光盘的径向相对应的第一方向倾斜，并且与第一方向正交的第二方向倾斜。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2005018883A Optical pickup device and manufacturing method of optical pickup device 有权
标题翻译：光学拾取器件的制造方法和光学拾取器件的制造方法
公开(公告)号：JP2005018883A
公开(公告)日：2005-01-20
申请号：JP2003180938
申请日：2003-06-25
申请人： Sony Corp , ソニー株式会社
发明人： TAKASE FUTOHIRO , YOSHIDA HIROSHI
IPC分类号： G11B7/135 , G11B7/22
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup device in which problems of aberration, the number of parts, and adjustment at the time of manufacturing can be solved, and to provide a manufacturing method of the optical pickup device. SOLUTION: As a first laser beam 26c emitted from a first light emitting part 26 and a second laser beam 30c emitted from a second light emitting part 30 are guided on an optical disk D while having a common optical axis, the first laser beam 26c and the second laser beam 30c are made incident on the same position of an objective lens 15c. Therefore, aberration is not caused on the optical disk D and deterioration of a signal caused by aberration can be prevented. Moreover, as the objective lens can be shared without using the other special parts, the number of parts can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供可以解决像差，零件数量和制造时的调整问题的光拾取装置，并提供光拾取装置的制造方法。解决方案：当从第一发光部分26发射的第一激光束26c和从第二发光部分30发射的第二激光束30c在具有公共光轴的同时在光盘D上被引导时，第一激光器光束26c和第二激光束30c入射到物镜15c的相同位置。因此，不会在光盘D上产生像差，并且可以防止由像差引起的信号的劣化。此外，由于可以在不使用其他特殊部件的情况下共享物镜，所以可以减少部件的数量。版权所有（C）2005，JPO＆NCIPI

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