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31. 发明申请

US20050169155A1 Optical pickup device having chromatic aberration correction lens 有权
标题翻译：具有色差校正透镜的光学拾取装置
公开(公告)号：US20050169155A1
公开(公告)日：2005-08-04
申请号：US11097287
申请日：2005-04-04
申请人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
发明人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hea-jung Suh
IPC分类号： G02B13/00 , G02B3/00 , G02B13/18 , G11B7/135 , G11B7/00
CPC分类号： G11B7/13922 , G02B27/0025 , G11B7/1378 , G11B2007/13727
摘要： An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical path changer on an optical path between the light source and the objective lens to change the path of incident light, a chromatic aberration correction lens disposed on an optical path between the light source and the objective lens, and a photodetector to receive light which is reflected from the recording medium and is then incident thereon through the optical path changer. The chromatic aberration correction lens corrects a chromatic aberration occurring due to a change in the wavelength and/or due to an increase in a wavelength bandwidth of the light. The chromatic aberration correction lens includes at least two lenses such that a lens having a positive power and a lens having a negative power are adjacent to each other.
摘要翻译：一种光学拾取装置，包括用于发光的光源，用于将光聚焦在记录介质上以形成光点的物镜，在光源和物镜之间的光路上的光路改变器，入射光，设置在光源和物镜之间的光路上的色差校正透镜，以及光接收器，用于接收从记录介质反射然后通过光路变换器入射到其上的光。色差校正透镜校正由于波长的变化和/或由于光的波长带宽的增加而发生的色像差。色像差校正透镜包括至少两个透镜，使得具有正光焦度的透镜和具有负光焦度的透镜彼此相邻。

32. 发明授权

US06788473B2 Objective lens device for correcting chromatic aberration and optical pickup employing the same 失效
标题翻译：用于校正色差的物镜装置和采用该物镜的光拾取器
公开(公告)号：US06788473B2
公开(公告)日：2004-09-07
申请号：US09987426
申请日：2001-11-14
申请人： Tae-kyung Kim , Young-man Ahn , Hea-jung Suh , Chong-sam Chung
发明人： Tae-kyung Kim , Young-man Ahn , Hea-jung Suh , Chong-sam Chung
IPC分类号： G02B2102
CPC分类号： G11B7/1374 , G11B7/13922 , G11B2007/13727
摘要： An objective lens device and an optical pickup employing the objective lens device. The objective lens device is formed of three lenses including a lens having a negative power and formed of material having an Abbe number which is 45 or less in line d. At least one surface of surfaces of the three lenses is formed to be aspherical. Thus, in the objective lens device, a high numerical aperture of 0.70 or more is realized and chromatic aberration is corrected with respect to blue light enabling improved recording and/or reproduction using blue light.
摘要翻译：一种物镜装置和采用该物镜装置的光拾取器。物镜装置由具有负功率的透镜的三个透镜形成，并且由具有在行d中为45以下的阿贝数的材料形成。三个透镜的表面的至少一个表面形成为非球面。因此，在物镜装置中，实现了0.70以上的高数值孔径，并且相对于能够改善使用蓝光的记录和/或再现的蓝光来校正色像差。

33. 发明授权

US06646976B1 Optical pickup apparatus capable of reducing cross talk by adjacent tracks and a method therefor 失效
标题翻译：能够减少相邻轨道串扰的光拾取装置及其方法
公开(公告)号：US06646976B1
公开(公告)日：2003-11-11
申请号：US09461290
申请日：1999-12-15
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Seung-tae Jung , Chul-woo Lee , In-sik Park , Dong-ho Shin
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Seung-tae Jung , Chul-woo Lee , In-sik Park , Dong-ho Shin
IPC分类号： G11B700
CPC分类号： G11B7/005 , G11B7/131 , G11B7/1353 , G11B20/22 , G11B2220/2579
摘要： An optical pickup apparatus which reduces cross talk by adjacent tracks. The optical pickup apparatus divides light reflected from an optical recording medium as a spot into center and side portions defined with respect to the radial direction of the recording medium and provides electrical signals corresponding to the reflected light in divided form. An operation unit multiplies signals corresponding to the side portions by an operation constant, adds the multiplication results and the detected signal of the center portion, and outputs an information signal of a main track with reduced cross talk by adjacent tracks in real time. The optical efficiency is sufficient that recording of an information signal can be performed with the optical pickup.
摘要翻译：一种减少相邻轨道串扰的光拾取装置。光学拾取装置将从光记录介质反射的光作为点分成中心和相对于记录介质的径向限定的侧部，并且以分开的形式提供对应于反射光的电信号。操作单元将与侧面部分对应的信号乘以运算常数，将相乘结果和检测到的中心部分的信号相加，并实时地通过相邻轨道输出具有减小的串扰的主轨道的信息信号。光学效率足以利用光学拾取器进行信息信号的记录。

34. 发明授权

US06590851B1 Optical pickup for recording/reproducing optical discs of multiple thicknesses 有权
标题翻译：用于记录/再现多个厚度的光盘的光学拾取器
公开(公告)号：US06590851B1
公开(公告)日：2003-07-08
申请号：US09690021
申请日：2000-10-17
申请人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Hea-jung Suh
发明人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Hea-jung Suh
IPC分类号： G11B700
CPC分类号： G11B7/1374 , G11B7/0037 , G11B7/1275 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup including: first and second light sources for generating first and second laser beams having different wavelengths corresponding to first and second media having different thicknesses, respectively; an objective lens that has diverging and converging/focusing portions, to focus the first and second laser beams from the first and second light sources onto the first and second media, respectively; a photodetector to receive the first and second laser beams that are emitted from the first and second light sources and reflected, respectively, by the first and second media; and a collimating lens arranged on the optical path between the objective lens, and the first and second light sources. The optical pickup is compatible with both existing digital versatile disks (DVDs), and high-definition (HD)-DVDs, which need a blue light source near 405 nm and an objective lens that has a numerical aperture of 0.6 or more.
摘要翻译：一种光学拾取器，包括：第一和第二光源，用于分别产生对应于具有不同厚度的第一和第二介质的具有不同波长的第一和第二激光束; 具有发散和会聚/聚焦部分的物镜，分别将来自第一和第二光源的第一和第二激光束聚焦到第一和第二介质上; 光接收器，用于接收从第一和第二光源发射并分别由第一和第二介质反射的第一和第二激光束; 以及布置在物镜与第一和第二光源之间的光路上的准直透镜。光拾取器与现有的数字通用盘（DVD）和需要405nm附近的蓝色光源的高清（HD）-DVD以及数值孔径为0.6或更大的物镜兼容。

35. 发明授权

US06563780B2 Compatible optical pickup for high-density recording/reproduction 有权
标题翻译：兼容的光学拾取器用于高密度记录/再现
公开(公告)号：US06563780B2
公开(公告)日：2003-05-13
申请号：US09793718
申请日：2001-02-27
申请人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Hea-jung Suh
发明人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Hea-jung Suh
IPC分类号： G11B700
CPC分类号： G11B7/13922 , G11B7/005 , G11B7/1395 , G11B2007/0006
摘要： An optical pickup compatible with optical discs having different formats. A first light source emits a first light beam suitable for a first format optical disc. An objective lens is optimized for a wavelength of the first light source. Light reflected from the first optical disc provides a reproduction signal. A second light source emits a second light beam suitable for a second format optical disc. A light splitter splits the second light beam and the objective lens focuses the split beams onto the second disc as a main light spot and a sub-light spot. Lights reflected from the main light spot and the sub-light spot are independently detected and then processed to correct for chromatic aberration caused by a difference in the wavelengths of the first and second light beams and/or spherical aberration caused by thickness difference between the first and second format optical discs.
摘要翻译：与具有不同格式的光盘兼容的光学拾取器。第一光源发射适合于第一格式光盘的第一光束。针对第一光源的波长优化物镜。从第一光盘反射的光提供再现信号。第二光源发射适合于第二格式光盘的第二光束。光分路器分裂第二光束，并且物镜将分束束聚焦到第二盘上作为主光点和次光点。从主光点和副光点反射的光被独立地检测，然后被处理以校正由第一和第二光束的波长的差异引起的色差和/或由第一和第二光束之间的厚度差引起的球面像差和第二格式光盘。

36. 发明授权

US07009921B1 Method and circuit for detecting playback signal which is compensated for time delay 失效
标题翻译：用于检测补偿时间延迟的重放信号的方法和电路
公开(公告)号：US07009921B1
公开(公告)日：2006-03-07
申请号：US09563430
申请日：2000-05-03
申请人： Tatsuhiro Otsuka , Seong-sin Joo , Chong-sam Chung , Young-man Ahn , In-sik Park , Hea-jung Suh , Byung-in Ma , Byoung-ho Choi
发明人： Tatsuhiro Otsuka , Seong-sin Joo , Chong-sam Chung , Young-man Ahn , In-sik Park , Hea-jung Suh , Byung-in Ma , Byoung-ho Choi
IPC分类号： G11B20/18
CPC分类号： G11B20/10009 , G11B7/005
摘要： A method and circuit for providing a playback signal which is compensated for time delay. The circuit includes a time delay compensator for detecting a time difference between outputs of a photodetector and temporally matching part of the outputs of the photodetector and another part of the outputs of the photodetector, between which the time difference occurs, to compensate for time delay between different outputs of the photodetector, and an operational unit for summing the part of the outputs of the photodetector, which is compensated for the time delay, and the other part of the outputs of the photodetector to provide a playback signal. Accordingly, the circuit compensates for the time delay between the outputs of the photodetector, thereby increasing the degree of modulation of the data playback signal. In addition, the circuit maximumly suppresses the distortion or degradation of the signal and minimizes the occurrence of errors in the playback signal, thereby improving the reliability of the playback signal.
摘要翻译：一种用于提供补偿时间延迟的重放信号的方法和电路。该电路包括时间延迟补偿器，用于检测光电检测器的输出之间的时间差，并且在时间上匹配部分光电检测器的输出和光电检测器的输出的另一部分之间产生时差，以补偿光电检测器之间的时间延迟光检测器的不同输出和用于对补偿了时间延迟的光电检测器的输出的一部分进行求和以及光电检测器的输出的另一部分以提供重放信号的操作单元。因此，电路补偿光电检测器的输出之间的时间延迟，从而增加数据重放信号的调制程度。此外，电路最大限度地抑制信号的失真或劣化，并且使重放信号中的错误的发生最小化，从而提高重放信号的可靠性。

37. 发明授权

US07170834B2 Method and circuit for detecting playback signal which is compensated for time delay 失效
标题翻译：用于检测补偿时间延迟的重放信号的方法和电路
公开(公告)号：US07170834B2
公开(公告)日：2007-01-30
申请号：US10861404
申请日：2004-06-07
申请人： Tatsuhiro Otsuka , Seong-sin Joo , Chong-sam Chung , Young-man Ahn , In-sik Park , Hea-jung Suh , Byung-in Ma , Byoung-ho Choi
发明人： Tatsuhiro Otsuka , Seong-sin Joo , Chong-sam Chung , Young-man Ahn , In-sik Park , Hea-jung Suh , Byung-in Ma , Byoung-ho Choi
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B7/005
摘要： A method of and a circuit for providing a playback signal, which is compensated for time delay, from a photodetector having a plurality of outputs. A time difference between a first signal corresponding to a part of the outputs of the photodetector and a second signal corresponding to another part of the outputs of the photodetector is detected and one of the first and second signals is temporally shifted to compensate for a time delay between different outputs of the photodetector. The temporally shifted signal is summed with the other signal to provide a playback signal. Accordingly, the time delay between the outputs of the photodetector is compensated, thereby increasing the degree of modulation of the data playback signal. In addition, distortion or degradation of the signal is suppressed and occurrence of errors in the playback signal is minimized, thereby improving the reliability of the playback signal.
摘要翻译：一种用于从具有多个输出的光电检测器提供补偿时间延迟的重放信号的方法和电路。检测对应于光电检测器的输出的一部分的第一信号与对应于光电检测器的输出的另一部分的第二信号之间的时间差，并且第一和第二信号中的一个被时间偏移以补偿时间延迟在光电检测器的不同输出之间。时间偏移的信号与另一个信号相加以提供重放信号。因此，补偿了光检测器的输出之间的时间延迟，从而增加了数据重放信号的调制度。此外，抑制了信号的失真或劣化，并且重放信号中的错误的发生被最小化，从而提高了重放信号的可靠性。

38. 发明授权

US06538975B1 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US06538975B1
公开(公告)日：2003-03-25
申请号：US09471411
申请日：1999-12-23
申请人： Hea-jung Suh , Chong-sam Chung , Young-man Ahn
发明人： Hea-jung Suh , Chong-sam Chung , Young-man Ahn
IPC分类号： G11B700
CPC分类号： G11B7/1359 , G11B7/005 , G11B7/1365 , G11B7/1372 , G11B7/1398
摘要： An optical pickup capable of reducing cross-talk due to signal interference of adjacent tracks of an optical medium during playback of a radio frequency (RF) signal from a main track of the optical recording medium. In the optical pickup, optical spots can be converged on the main track and the adjacent tracks of the recording medium without a time lag, wherein different polarized component beams are focused as a primary optical spot and secondary optical spots on the main and adjacent tracks, respectively, of the optical recording medium. Thus, the primary optical spot and the secondary optical spots, which have different polarized components, can be separately received by different light receiving portions. Also, the optical spots are photoelectrically converted in the light receiving portions and are differentially amplified through multiplication using a predetermined operation constant, thereby reducing cross-talk from a detected RF signal. For the convergence of optical spots on the adjacent tracks without time lag relative to the optical spot formed on the major track, a beam shaping unit having a shield plate, or transmission or reflection type phase difference prism is adopted.
摘要翻译：一种光学拾取器，其能够在从光记录介质的主轨道重放射频（RF）信号期间减少由于光学介质的相邻轨道的信号干扰引起的串扰。在光学拾取器中，光点可以会聚在记录介质的主轨道和相邻的轨道上，而不会出现时滞，其中不同的偏振分量光束被聚焦成主光点并且在主轨道和相邻轨迹上的次光点，分别为光记录介质。因此，具有不同极化分量的主光点和次光点可以被不同的光接收部分分开地接收。此外，光点在光接收部分中被光电转换，并且通过使用预定的操作常数乘法差分放大，从而减少了来自检测到的RF信号的串扰。为了相对于主轨道上形成的光点而在相邻轨道上的光点的会聚没有时间滞后，采用具有屏蔽板或透射或反射型相位差棱镜的光束整形单元。

39. 发明授权

US08493831B2 Compatible optical pickup and optical recording and/or reproducing apparatus employing the same 失效
标题翻译：兼容的光学拾取器和采用该光学拾取器的光学记录和/或再现装置
公开(公告)号：US08493831B2
公开(公告)日：2013-07-23
申请号：US10897015
申请日：2004-07-23
申请人： Ui-yol Kim , Tae-kyung Kim , Chong-sam Chung , Pyong-yong Seong
发明人： Ui-yol Kim , Tae-kyung Kim , Chong-sam Chung , Pyong-yong Seong
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1374 , G11B2007/0006
摘要： A compatible optical pickup including an optical unit and a focusing unit. The optical unit emits a short wavelength light for high-density recording media and a long wavelength light for low-density recording media, directs the short and long wavelength light to a recording medium, receives lights reflected by the recording medium, and detects an information reproduction signal and/or an error signal from the received lights. The focusing unit focuses light received from the optical unit to form a light spot on a recording surface of the recording medium, diffracts the short wavelength light into a zero order light and the long wavelength light into a second order light to be used as effective light for recording and/or reproduction. Thus, a high-density recording medium and a low-density recording medium having different thicknesses can be compatibly used.
摘要翻译：一种兼容的光学拾取器，包括光学单元和聚焦单元。光学单元发射用于高密度记录介质的短波长光和用于低密度记录介质的长波长光，将短波长和长波长光引导到记录介质，接收由记录介质反射的光，并检测信息再现信号和/或来自接收到的光的误差信号。聚焦单元将从光学单元接收的光聚焦在记录介质的记录表面上形成光点，将短波长的光衍射成零级光，将长波长的光衍射成二阶光，作为有效光用于记录和/或再现。因此，可以兼容使用具有不同厚度的高密度记录介质和低密度记录介质。

40. 发明申请

US20060227678A1 Multilayer recording medium and optical pickup for recording and/or reproducing the same 失效
标题翻译：用于记录和/或再现的多层记录介质和光学拾取器
公开(公告)号：US20060227678A1
公开(公告)日：2006-10-12
申请号：US11227912
申请日：2005-09-16
申请人： Tao Hong , Tae-kyung Kim , Chong-sam Chung
发明人： Tao Hong , Tae-kyung Kim , Chong-sam Chung
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/131 , G11B2007/0013
摘要： An optical pickup for recording and/or reproducing data with respect to a multilayer recording medium having a plurality of recording layers, where the optical pickup includes a light source emitting a beam having a predetermined wavelength, a diffraction unit separating the beam emitted from the light source into a main beam and a sub-beam, and a photodetector having a main photodetector detecting a main beam reflected from the multilayer recording medium and a sub-photodetector detecting the sub-beam. In the optical pickup, the main photodetector and sub-photodetector are separated a predetermined distance from each other so that a beam spot formed by the beam reflected from a defocus recording layer is not detected by the sub-photodetector.
摘要翻译：一种用于相对于具有多个记录层的多层记录介质记录和/或再现数据的光学拾取器，其中光学拾取器包括发射具有预定波长的光束的光源，将从光发射的光束分离的衍射单元源到主光束和子光束，以及光检测器，其具有检测从多层记录介质反射的主光束的主光电检测器和检测子光束的子光电检测器。在光学拾取器中，主光电检测器和副光电检测器彼此隔开预定距离，使得由离焦记录层反射的光束形成的光束点不被副光电检测器检测。

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