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1. 发明申请

US20060002247A1 Optical pickup and optical recording and/or reproducing apparatus adopting the same 审中-公开
标题翻译：采用该拾取器和光学记录和/或再现装置的光拾取器和/或再现装置
公开(公告)号：US20060002247A1
公开(公告)日：2006-01-05
申请号：US11172901
申请日：2005-07-05
申请人： Tae-kyung Kim , Seok-jung Kim , Hee-kyung Kim , Woo-seok Choi
发明人： Tae-kyung Kim , Seok-jung Kim , Hee-kyung Kim , Woo-seok Choi
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/1374 , G11B2007/0006
摘要： An optical pickup and an optical recording and/or reproducing apparatus adopting the same are provided. The optical pickup includes an optical unit, first and second objective lenses, and an optical path switching unit. The optical unit illuminates light onto an information storage medium and receives light reflected from the information storage medium to detect an information signal and/or an error signal. The first and the second objective lenses focus incident light to form a light spot on an information storage surface of the information storage medium. The optical path switching unit selectively directs the light incident from the optical unit to one of the first and second objective lenses. In the optical pickup, since the light quantity directed to a plurality of objective lenses may be maximized, optical efficiency is increased and thus high-speed operation may be attained.
摘要翻译：提供了一种光拾取器和采用该拾取器的光学记录和/或再现装置。光学拾取器包括光学单元，第一和第二物镜以及光路切换单元。光学单元将光照射到信息存储介质上并接收从信息存储介质反射的光以检测信息信号和/或误差信号。第一和第二物镜聚焦入射光以在信息存储介质的信息存储表面上形成光斑。光路切换单元将从光学单元入射的光选择性地引导到第一和第二物镜之一。在光学拾取器中，由于可以使指向多个物镜的光量最大化，所以光学效率提高，因此可以实现高速运转。

2. 发明授权

US07423700B2 Liquid crystal device for compensating for aberration, optical pickup including liquid crystal device, and optical recording and/or reproducing apparatus employing optical pickup 失效
标题翻译：用于补偿像差的液晶装置，包括液晶装置的光学拾取器以及采用光学拾取器的光学记录和/或再现装置
公开(公告)号：US07423700B2
公开(公告)日：2008-09-09
申请号：US11324466
申请日：2006-01-04
申请人： Tae-kyung Kim , Hee-kyung Kim , Woo-seok Choi
发明人： Tae-kyung Kim , Hee-kyung Kim , Woo-seok Choi
IPC分类号： G02F1/13
CPC分类号： G11B7/13927 , G02B5/3016 , G11B7/1369
摘要： Provided are an aberration-compensating liquid crystal device, a method of manufacturing the same, an optical pickup including the liquid crystal device, and an optical recording and/or reproducing apparatus employing the optical pickup. The method of manufacturing an aberration-compensating liquid crystal device comprises: positioning a gray scale mask having an absorption rate distribution corresponding to that of aberrations to be corrected on a liquid crystal cell containing a mixture of liquid crystals and monomers injected between a pair of transparent substrates; and irradiating the liquid crystal cell on which the gray scale mask has been positioned with UV light so that the monomers undergo photopolymerization into polymer and phase separation into a polymer-existing region and a liquid crystal-existing region, thereby forming a liquid crystal layer having a phase difference distribution corresponding to that of aberrations to be corrected.
摘要翻译：提供了一种像差补偿液晶装置，其制造方法，包括液晶装置的光学拾取器以及采用光学拾取器的光学记录和/或再现装置。制造像差补偿液晶装置的方法包括：将具有与待校正的像差的吸收率分布相对应的吸收率分布的灰度掩模定位在液晶单元上，所述液晶单元含有液晶和单体之间的混合物，底物; 并用紫外光照射其上已经定位了灰度掩模的液晶单元，使得单体进行光聚合成聚合物和相分离成聚合物存在区域和液晶存在区域，由此形成液晶层，其具有与要校正的像差的相位差分布相对应。

3. 发明申请

US20060146206A1 Liquid crystal device for compensating for aberration, optical pickup including liquid crystal device, and optical recording and/or reproducing apparatus employing optical pickup 失效
标题翻译：用于补偿像差的液晶装置，包括液晶装置的光学拾取器以及采用光学拾取器的光学记录和/或再现装置
公开(公告)号：US20060146206A1
公开(公告)日：2006-07-06
申请号：US11324466
申请日：2006-01-04
申请人： Tae-kyung Kim , Hee-kyung Kim , Woo-seok Choi
发明人： Tae-kyung Kim , Hee-kyung Kim , Woo-seok Choi
IPC分类号： G02F1/13
CPC分类号： G11B7/13927 , G02B5/3016 , G11B7/1369
摘要： Provided are an aberration-compensating liquid crystal device, a method of manufacturing the same, an optical pickup including the liquid crystal device, and an optical recording and/or reproducing apparatus employing the optical pickup. The method of manufacturing an aberration-compensating liquid crystal device comprises: positioning a gray scale mask having an absorption rate distribution corresponding to that of aberrations to be corrected on a liquid crystal cell containing a mixture of liquid crystals and monomers injected between a pair of transparent substrates; and irradiating the liquid crystal cell on which the gray scale mask has been positioned with UV light so that the monomers undergo photopolymerization into polymer and phase separation into a polymer-existing region and a liquid crystal-existing region, thereby forming a liquid crystal layer having a phase difference distribution corresponding to that of aberrations to be corrected.
摘要翻译：提供了一种像差补偿液晶装置，其制造方法，包括液晶装置的光学拾取器以及采用光学拾取器的光学记录和/或再现装置。制造像差补偿液晶装置的方法包括：将具有与待校正的像差的吸收率分布相对应的吸收率分布的灰度掩模定位在液晶单元上，所述液晶单元含有液晶和单体之间的混合物，底物; 并用紫外光照射其上已经定位了灰度掩模的液晶单元，使得单体进行光聚合成聚合物和相分离成聚合物存在区域和液晶存在区域，由此形成液晶层，其具有与要校正的像差的相位差分布相对应。

4. 发明申请

US20070013984A1 Active compensation device, and compatible optical pickup and optical recording and/or reproducing apparatus employing the active compensation device 审中-公开
标题翻译：有源补偿装置以及采用有源补偿装置的兼容的光学拾取和光学记录和/或再现装置
公开(公告)号：US20070013984A1
公开(公告)日：2007-01-18
申请号：US11486109
申请日：2006-07-14
申请人： Tae-kyung Kim , Woo-seok Choi , Jin-won Lee , Tao Hong
发明人： Tae-kyung Kim , Woo-seok Choi , Jin-won Lee , Tao Hong
IPC分类号： G03H1/12
CPC分类号： G02B5/32 , G02B3/12 , G02B5/189 , G11B7/1353 , G11B7/1369 , G11B7/13925
摘要： An active compensation device, and a compatible optical pickup and an optical recording and/or reproducing apparatus employing the active compensation device, are compatible with information storage media standards specifying different thicknesses and light having the same wavelength. The active compensation device includes two transparent substrates; a material layer interposed between the transparent substrates and having a refractive index that is actively switched according to a voltage applied to the material layer; and a holographic pattern formed adjacent to the material layer on a surface of at least one of the transparent substrates to control a divergence angle of incident light by transmitting the incident light without diffraction or diffracting the incident light according to the refractive index of the material layer.
摘要翻译：使用有源补偿装置的有源补偿装置和兼容光学拾取器以及光学记录和/或再现装置与规定不同厚度的信息存储介质标准和具有相同波长的光兼容。有源补偿装置包括两个透明基板; 介于所述透明基板之间并且具有根据施加到所述材料层的电压而有效切换的折射率的材料层; 以及在至少一个所述透明基板的表面上与所述材料层相邻形成的全息图案，以通过透射所述入射光而不衍射衍射或根据所述材料层的折射率衍射所述入射光来控制入射光的发散角。

5. 发明申请

US20060221797A1 Optical pickup, optical recording and/or reproducing apparatus using the same, and method for detecting tracking error signal 审中-公开
标题翻译：光拾取器，使用其的光学记录和/或再现装置以及用于检测跟踪误差信号的方法
公开(公告)号：US20060221797A1
公开(公告)日：2006-10-05
申请号：US11392645
申请日：2006-03-30
申请人： Woo-seok Choi , Tae-kyung Kim , Chong-sam Chung
发明人： Woo-seok Choi , Tae-kyung Kim , Chong-sam Chung
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0912
摘要： An optical pickup and an optical recording and/or reproducing apparatus employing the optical pickup, wherein the optical pickup includes: a light source; an objective lens to collect and focus an incident beam on an information storage medium; a holographic grating to split light emitted by the light source into a main beam and first and second sub-beams by diffraction and to provide, or create, a continuously changing wavefront in the first and second sub-beams to reduce the amplitude of an AC component of a sub-push-pull (SPP) signal of the first and second sub-beams; and a photodetector to receive the main beam and the first and second sub-beams that are focused on and reflected from the information storage medium and to obtain a main push-pull (MPP) signal of the main beam and a SPP signal of the first and second sub-beams.
摘要翻译：一种使用该光学拾取器的光学拾取器和光学记录和/或再现装置，其中所述光学拾取器包括：光源; 用于收集和聚焦在信息存储介质上的入射光束的物镜; 全息光栅，用于将由光源发射的光分裂成主光束，并通过衍射将第一和第二子光束分离，并在第一和第二子光束中提供或产生连续变化的波前，以减小AC的幅度所述第一和第二子光束的子推挽（SPP）信号的分量; 以及光接收器，用于接收聚焦在信息存储介质上并从信息存储介质反射的主光束和第一和第二子光束，并获得主光束的主推挽（MPP）信号和第一和第二子光束。

6. 发明申请

US20070041287A1 Optical pickup apparatus capable of detecting and compensating for spherical aberration caused by thickness variation of recording layer 审中-公开
标题翻译：能够检测和补偿由记录层的厚度变化引起的球面像差的光学拾取装置
公开(公告)号：US20070041287A1
公开(公告)日：2007-02-22
申请号：US11496522
申请日：2006-08-01
申请人： Tao Hong , Tae-kyung Kim , Woo-seok Choi , Chong-sam Chung
发明人： Tao Hong , Tae-kyung Kim , Woo-seok Choi , Chong-sam Chung
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0943 , G11B7/131 , G11B7/13927
摘要： An optical pickup apparatus, including a light source to emit light, an objective lens to form a light spot on an optical recording medium by focusing the light emitted from the light source, an optical division unit, disposed between the light source and the objective lens, to divide the light emitted from the light source into a main beam and two subbeams to form one main spot and two subspots on the optical recording medium, the optical division unit having a first area and a second area surrounding the first area, a detector to detect the amount of light of the main beam and the amount of light of the respective subbeams reflected from the optical recording medium, a beam splitter disposed between the light source and the objective lens to allow the light reflected from the optical recording medium to be directed to the detector, signal generating circuits to generate a tracking error signal (TES), a focusing error signal (FES), and a spherical aberration signal (SAS), respectively, in response to the output of the detector, and a spherical aberration compensation unit, disposed between the objective lens and the beam splitter, to compensate for spherical aberration using the SAS generated by the signal generating circuits.
摘要翻译：一种光拾取装置，包括用于发光的光源，通过聚焦从光源发射的光在光学记录介质上形成光斑的物镜，设置在光源和物镜之间的光学分割单元为了将从光源发射的光分成主光束和两个子光束，以在光记录介质上形成一个主光点和两个子光点，光分割单元具有第一区域和围绕第一区域的第二区域，检测器检测主光束的光量和从光记录介质反射的各子束的光量，设置在光源和物镜之间的分束器，以允许从光记录介质反射的光为指向检测器，信号发生电路分别产生跟踪误差信号（TES），聚焦误差信号（FES）和球面像差信号（SAS），并且配置在物镜和分束器之间的球面像差补偿单元，以使用由信号发生电路产生的SAS补偿球面像差。

7. 发明申请

US20060203680A1 Multilayer recording medium and method of manufacturing the same 失效
公开(公告)号：US20060203680A1
公开(公告)日：2006-09-14
申请号：US11290593
申请日：2005-12-01
申请人： Tao Hong , Chong-sam Chung , Tae-kyung Kim , Woo-seok Choi
发明人： Tao Hong , Chong-sam Chung , Tae-kyung Kim , Woo-seok Choi
IPC分类号： G11B7/20
CPC分类号： G11B7/26 , G11B7/24038 , G11B7/268
摘要： A multilayer recording medium that prevents deterioration of a signal characteristic due to a mirror effect that may occur between recording layers and a method of manufacturing the same, the multilayer recording medium having at least two recording layers, wherein a thickness of at least one spacer layer between adjacent recording layers is different from a thickness of the other spacer layers such that a beam focusing on a recording layer is prevented from focusing on another recording layer corresponding to a mirror layer due to reflection. In the multilayer recording medium, a mirror effect is greatly reduced. In addition, the thickness of only a spacer layer exerting the most significant influence on the mirror effect is changed to prevent the deterioration of signal quality due to the mirror effect, and therefore, the structure of a multilayer recording medium is simplified.

8. 发明申请

US20070291601A1 METHOD OF CORRECTING CHROMATIC ABERRATION GENERATED DURING CONVERSION FROM REPRODUCING MODE TO RECORDING MODE, AND RECORDING METHOD AND RECORDING AND REPRODUCING APPARATUS ADOPTING THE CORRECTION METHOD 审中-公开
标题翻译：校正从再现模式转换到记录模式时产生的色差的方法，以及采用校正方法的记录方法和记录和再现装置
公开(公告)号：US20070291601A1
公开(公告)日：2007-12-20
申请号：US11685390
申请日：2007-03-13
申请人： Woo-seok CHOI , Tae-kyung Kim , In-joo Kim
发明人： Woo-seok CHOI , Tae-kyung Kim , In-joo Kim
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/13927
摘要： A chromatic aberration correcting method to correct chromatic aberration generated during a conversion from a reproducing mode to a recording mode in an optical recording and reproducing apparatus which uses an optical pickup to form a light spot on an optical information storage medium by focusing light emitted from a light source using an objective lens and to detect light reflected from the optical information storage medium using a photodetector includes applying a focus offset to the objective lens before the conversion from the reproducing mode to the recording mode to reduce defocus caused by chromatic aberration generated according to the change in wavelength generated when an output light power of the light source is changed from a reproducing light power to a recording light power, and correcting the defocus by outputting the recording light power from the light source during the conversion to the recording mode while the focus offset is applied to the objective lens.
摘要翻译：一种色差校正方法，用于校正在光学记录和再现装置中从再现模式到记录模式的转换期间产生的色差，该光学记录和再现装置使用光学拾取器在光学信息存储介质上形成光点，使用物镜的光源和使用光检测器检测从光信息存储介质反射的光包括在从再现模式转换到记录模式之前对物镜施加聚焦偏移，以减少由根据当光源的输出光功率从再现光功率改变为记录光功率时产生的波长变化，以及通过在转换到记录模式期间从光源输出记录光功率来校正散焦，同时对焦偏移应用于物镜。

9. 发明授权

US07567493B2 Multilayer recording medium and method of manufacturing the same 失效
标题翻译：多层记录介质及其制造方法
公开(公告)号：US07567493B2
公开(公告)日：2009-07-28
申请号：US11290593
申请日：2005-12-01
申请人： Tao Hong , Chong-sam Chung , Tae-kyung Kim , Woo-seok Choi
发明人： Tao Hong , Chong-sam Chung , Tae-kyung Kim , Woo-seok Choi
IPC分类号： G11B7/20 , G11B7/26
CPC分类号： G11B7/26 , G11B7/24038 , G11B7/268
摘要： A multilayer recording medium that prevents deterioration of a signal characteristic due to a mirror effect that may occur between recording layers and a method of manufacturing the same, the multilayer recording medium having at least two recording layers, wherein a thickness of at least one spacer layer between adjacent recording layers is different from a thickness of the other spacer layers such that a beam focusing on a recording layer is prevented from focusing on another recording layer corresponding to a mirror layer due to reflection. In the multilayer recording medium, a mirror effect is greatly reduced. In addition, the thickness of only a spacer layer exerting the most significant influence on the mirror effect is changed to prevent the deterioration of signal quality due to the mirror effect, and therefore, the structure of a multilayer recording medium is simplified.
摘要翻译：一种防止由于记录层之间可能发生的镜面效应引起的信号特性劣化的多层记录介质及其制造方法，所述多层记录介质具有至少两个记录层，其中至少一个间隔层的厚度相邻记录层之间的距离不同于其它间隔层的厚度，从而防止聚焦在记录层上的光束聚焦于由于反射而对应于镜层的另一个记录层。在多层记录介质中，镜面效果大大降低。此外，仅改变对镜效应产生最重要影响的间隔层的厚度，以防止由于镜面效应引起的信号质量的劣化，因此简化了多层记录介质的结构。

10. 发明申请

US20110080817A1 COMPATIBLE OPTICAL PICKUP AND OPTICAL INFORMATION STORAGE MEDIUM SYSTEM EMPLOYING THE SAME 审中-公开
标题翻译：兼容光学拾取和光学信息存储介质系统
公开(公告)号：US20110080817A1
公开(公告)日：2011-04-07
申请号：US12964674
申请日：2010-12-09
申请人： Jae-cheol Bae , Tae-kyung Kim , Kyong-tae Park , Woo-seok Choi
发明人： Jae-cheol Bae , Tae-kyung Kim , Kyong-tae Park , Woo-seok Choi
IPC分类号： G11B7/12 , G11B7/00
CPC分类号： G11B7/13925 , G11B7/1275 , G11B7/1378 , G11B2007/0006
摘要： An optical pickup compatible with different types of optically recorded media and an optical recording and/or reproducing system employing the compatible optical pickup, the compatible optical pickup including: a short wavelength light source emitting a short wavelength light; a low-density optical system emitting a long wavelength light; an objective lens focusing lights incident from the long wavelength light source and the low-density optical system onto an information storage medium; a single photodetector (PD) receiving the short and long wavelength lights reflected from the information storage medium; a detection lens focusing the short and long wavelength lights reflected from the information storage medium as a light spot onto the single PD; a first collimating lens positioned on an optical path of a light reflected, wherein the optical path is positioned between the objective lens and the single PD; and a driving unit adjusting a position of the first collimating lens.
摘要翻译：一种与不同类型的光学记录介质兼容的光学拾取器以及采用兼容光学拾取器的光学记录和/或再现系统，所述兼容光学拾取器包括：发射短波长光的短波长光源; 发射长波长光的低密度光学系统; 将从长波长光源和低密度光学系统入射的光聚焦到信息存储介质上的物镜; 接收从信息存储介质反射的短波长和长波长光的单个光电检测器（PD）; 检测透镜将从信息存储介质反射的短波长和长波长的光聚焦成单个PD; 位于反射光的光路上的第一准直透镜，其中所述光路位于所述物镜和所述单个PD之间; 以及调节第一准直透镜的位置的驱动单元。

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