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21. 发明授权

US6078555A Optical head assembly having compatibility with digital versatile disk (DVD) and a recordable compact disk (CD-R) and for obtaining a high-speed access time 失效
标题翻译：具有与数字通用盘（DVD）和可记录光盘（CD-R）兼容的光头组件，用于获得高速存取时间
公开(公告)号：US6078555A
公开(公告)日：2000-06-20
申请号：US31540
申请日：1998-02-27
申请人： Chul-Woo Lee , Jang-Hoon Yoo
发明人： Chul-Woo Lee , Jang-Hoon Yoo
IPC分类号： G11B7/135 , G11B7/00 , G11B7/08 , G11B7/12 , G11B7/125 , G11B7/20 , G11B7/09
CPC分类号： G11B7/127 , G11B7/12 , G11B2007/0006
摘要： An optical head assembly having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) includes a stationary first optical unit and a second optical unit which moves to a position to change the target sector of an optical disk loaded in an optical disk driver on which the incident beam is irradiated by travelling between an inner circumference and an outer circumference of the loaded optical disk. The first optical unit directs an emitted first light beam having a wavelength of 635 nm for a DVD to the second optical unit and detects information contained in the first light beam redirected from the second optical unit, if the DVD is the loaded optical disk. Meanwhile, the second optical unit focuses the first light beam incident from the first optical unit if the loaded optical disk is the DVD and an emitted second light beam having a wavelength of 780 nm for a CD-R on an information recording surface of the loaded optical disk if the CD-R is the loaded optical disk, transmits the first light beam reflected by the loaded DVD disk to the first optical unit, and detects information from the second light beam reflected by the loaded CD-R disk.
摘要翻译：具有与可记录光盘（CD-R）和数字视盘（DVD）兼容的光学头组件包括固定的第一光学单元和第二光学单元，其移动到改变装载的光盘的目标扇区的位置在光盘驱动器中，通过在装入的光盘的内圆周和外圆周之间行进照射入射光束。第一光学单元将发射的具有635nm波长的第一光束引导到第二光学单元，并且如果DVD是装载的光盘，则检测包含在从第二光学单元重定向的第一光束中的信息。同时，如果加载的光盘是DVD，则第二光学单元聚焦从第一光学单元入射的第一光束，并且在加载的信息记录表面上对于CD-R的发射的具有780nm波长的第二光束进行聚焦光盘如果CD-R是装载的光盘，则将由加载的DVD盘反射的第一光束传输到第一光学单元，并且检测来自由加载的CD-R盘反射的第二光束的信息。

22. 发明授权

US6043912A Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens 失效
标题翻译：光拾取器兼容数字通用光盘和使用全息环形透镜的可刻录光盘
公开(公告)号：US6043912A
公开(公告)日：2000-03-28
申请号：US49988
申请日：1998-03-30
申请人： Jang-Hoon Yoo , Chul-Woo Lee
发明人： Jang-Hoon Yoo , Chul-Woo Lee
IPC分类号： G11B7/08 , G02B5/32 , G11B7/00 , G11B7/125 , G11B7/135 , G11B7/20
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/1275 , G11B7/1372 , G11B2007/0006
摘要： An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, respectively, a holographic lens, including a holographic ring, to transmittal of the light beams emitted from the laser light sources in an inner region of the holographic ring, and diffracting a specific light beam among the light beams emitted from the laser light sources in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media; and two photodetectors to individually detect optical information from the light beams incident from the optical elements. The optical pickup apparatus is used compatibly with optical recording media by using the holographic lens to eliminate spherical aberration generated when an optical recording medium is changed to another medium having a different thickness, thereby providing advantages which include ease in construction of the holographic lens and good mass-production capabilities.
摘要翻译：一种与至少两种类型的光学记录介质兼容的光学拾取装置，使用具有不同波长的光束来记录和读取信息，所述光学拾取装置包括两个激光源，分别发射具有不同波长的光束，全息图透镜，包括全息环，以在全息环的内部区域中传输从激光源发出的光束，并且在相对于外部区域的外部区域中从激光源发射的光束中衍射特定光束内部区域，用于将通过全息环透镜的光束聚焦在两种类型的光学记录介质的各个信息记录表面上的物镜，用于改变从信息记录表面反射的光束的光路的光学元件的光学记录介质; 以及两个光电检测器，用于单独地检测从光学元件入射的光束的光学信息。光学拾取装置通过使用全息透镜与光学记录介质兼容地使用，以消除当光学记录介质改变为具有不同厚度的另一种介质时产生的球面像差，从而提供了包括易于构建全息透镜的优点和良好的批量生产能力。

23. 再颁专利

USRE43106E1 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens 有权
标题翻译：光拾取器兼容数字通用光盘和使用全息环形透镜的可刻录光盘
公开(公告)号：USRE43106E1
公开(公告)日：2012-01-17
申请号：US11849609
申请日：2007-09-04
申请人： Jang-Hoon Yoo , Chul-Woo Lee
发明人： Jang-Hoon Yoo , Chul-Woo Lee
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/1275 , G11B7/1372 , G11B7/1374 , G11B7/1378 , G11B7/139 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, a holographic lens including a holographic ring to transmit the light beams incident in an inner region of the holographic ring, and to diffract a specific light beam among the light beams emitted from the laser light sources incident in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media to corresponding photodetectors.
摘要翻译：一种与至少两种类型的光学记录介质兼容的光学拾取装置，使用具有各自不同波长的光束来记录和读取信息，所述光学拾取装置包括两个激光源，以发射具有不同波长的光束;全息透镜，包括用于透射入射在全息环的内部区域中的光束的全息环，并且从入射在相对于内部区域的外部区域的激光光源发射的光束中衍射特定光束，将物镜衍射到将通过全息环透镜的光束聚焦在两种类型的光学记录介质，光学元件的相应信息记录表面上，以将从光学记录介质的信息记录表面反射的光束的光路改变为相应的光电检测器。

24. 发明授权

US07046611B2 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens 有权
公开(公告)号：US07046611B2
公开(公告)日：2006-05-16
申请号：US09930964
申请日：2001-08-17
申请人： Jang-Hoon Yoo , Chul-Hoo Lee
发明人： Jang-Hoon Yoo , Chul-Hoo Lee
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/1275 , G11B7/1372 , G11B7/1374 , G11B7/1378 , G11B7/139 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, a holographic lens including a holographic ring to transmit the light beams incident in an inner region of the holographic ring, and to diffract a specific light beam among the light beams emitted from the laser light sources incident in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media to corresponding photodetectors.

25. 发明授权

US06400658B1 DVD-RAM disk reproduction apparatus for reducing errors during detection of identification data 有权
标题翻译：用于在识别数据检测期间减少误差的DVD-RAM盘再现装置
公开(公告)号：US06400658B1
公开(公告)日：2002-06-04
申请号：US09275814
申请日：1999-03-25
申请人： Chang-Jin Yang , Pyong-Yong Seong , Seong-Sin Joo , Soo-Yul Jung , Jung-Eon Seo , Yong-Jae Lee , Jang-Hoon Yoo , Tae-Kyung Kim
发明人： Chang-Jin Yang , Pyong-Yong Seong , Seong-Sin Joo , Soo-Yul Jung , Jung-Eon Seo , Yong-Jae Lee , Jang-Hoon Yoo , Tae-Kyung Kim
IPC分类号： G11B17221
CPC分类号： G11B27/24 , G11B7/005 , G11B7/00718 , G11B7/00745 , G11B19/04 , G11B20/18 , G11B27/3027 , G11B2220/216 , G11B2220/2575
摘要： A DVD-RAM disk reproduction apparatus for reducing an error during detection of ID data, which includes a first operational amplifier for obtaining a sum signal resulting from the addition of four picked-up signals picked up by divided-by-four photodiodes from a DVD-RAM disk having a header region and a recording region, second and third operational amplifiers for respectively obtaining two sum signals corresponding to the upper and lower regions of the header region resulting from the addition of the first and second picked-up signals and the third and fourth picked-up signals, respectively, a fourth operational amplifier for obtaining a difference signal between the two sum signals, a header region detector for detecting upper and lower header region signals corresponding to the upper header region and the lower header region based on the difference signal, and detecting a header region signal corresponding to a header region by logically summing the two detected signals, a first multiplexer for selecting one of the two sum signals obtained by the second and third operational amplifiers according to the upper header region signal, and a second multiplexer for selecting the sum signal selected by the first operational amplifier and the sum signal selected by the first multiplexer according to the header region signal, to thereby output the selected result to an equalizer. Thus, during detection of ID data in a header region, a difference signal between the picked-up four signals is not used, but a signal resulting from the addition of two signals among the picked-up signals according to the corresponding upper and lower regions of the header region is selectively used. Accordingly, ID data can be detected from a signal without deterioration, to thereby reduce an error and thus improve a detection margin.
摘要翻译：一种用于在ID数据检测期间减少误差的DVD-RAM盘再现装置，其包括第一运算放大器，用于获得由DVD的四分之一光电二极管拾取的四个拾取信号的相加而得到的和信号 -RAM盘，具有标题区域和记录区域，第二和第三运算放大器，用于分别获得对应于由所述第一和第二拾取信号的相加产生的标题区域的上部和下部区域的两个和信号，以及第三个和第四拾取信号，分别用于获得两个和信号之间的差分信号的第四运算放大器，用于检测对应于上标题区域和下标题区域的上标题区域信号和下标头区域信号的标题区域检测器，差分信号，并且通过对两个检测到的信号进行逻辑求和来检测与标题区域相对应的标题区域信号，第一个mul 层叠器，用于根据上标头区域信号选择由第二和第三运算放大器获得的两个和信号之一;以及第二多路复用器，用于选择由第一运算放大器选择的和信号和由第一多路复用器选择的和信号，到标题区域信号，从而将所选择的结果输出到均衡器。因此，在标题区域中的ID数据的检测期间，不使用拾取的四个信号之间的差分信号，而是根据相应的上部和下部区域在拾取信号之间添加两个信号而产生的信号选择使用标题区域。因此，可以从信号中检测ID数据而不劣化，从而减少误差，从而提高检测余量。

26. 发明授权

US06363046B1 Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable compact disk (CD-R) using a holographic variable aperture 失效
标题翻译：与数字通用光盘（DVD）和可记录光盘（CD-R）兼容的光学记录/拾取头，使用全息可变光圈
公开(公告)号：US06363046B1
公开(公告)日：2002-03-26
申请号：US09049990
申请日：1998-03-30
申请人： Jang-Hoon Yoo , Chul-Woo Lee
发明人： Jang-Hoon Yoo , Chul-Woo Lee
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/1275 , G11B7/1365 , G11B2007/0006
摘要： An optical recording/pickup head having compatibility with a recordable compact disk (CD-R) and a digital video disk (DVD) transmits a first light beam having a wavelength of 635 nm for a DVD emitted from a first light source and a second light beam having a wavelength of 780 nm for a CD-R emitted from a second light source to an objective lens, using a holographic variable aperture. The holographic variable aperture totally transmits the incident first light beam to the objective lens, and transmits part of the incident second light beam to the objective lens. The objective lens focuses the incident first and second light beams on the information recording surfaces of the CD-R and the DVD. The sizes of the light spots which are focussed on the information recording surfaces of the DVD and the CD-R by the objective lens are approximately 0.9 &mgr;m and 1.4 &mgr;m, respectively, which appropriate for recording and reproducing the respective disks. The light spots have only a main lobe.
摘要翻译：具有与可记录光盘（CD-R）和数字视频盘（DVD）兼容的光学记录/拾取头将从第一光源发射的DVD发射具有635nm波长的第一光束和第二光使用全息可变孔径从第二光源发射到物镜的CD-R的波长为780nm的光束。全息可变孔径将入射的第一光束全部透射到物镜，并将入射的第二光束的一部分透射到物镜。物镜将入射的第一和第二光束聚焦在CD-R和DVD的信息记录表面上。通过物镜聚焦在DVD和CD-R的信息记录表面上的光斑的大小分别大约为0.9μm和1.4μm，这适合于记录和再现各个光盘。光点只有一个主瓣。

27. 发明授权

US06337841B1 Compatible optical pickup 有权
标题翻译：兼容光学拾音器
公开(公告)号：US06337841B1
公开(公告)日：2002-01-08
申请号：US09425887
申请日：1999-10-25
申请人： Kun-Soo Kim , Jong-Ryull Kim , Myoung-Soo Choi , Hyung-Taek Oh , Jong-Hwa Yu , Chul-Woo Lee , Kun-Ho Cho , Pyong-Yong Seong , Jang-Hoon Yoo
发明人： Kun-Soo Kim , Jong-Ryull Kim , Myoung-Soo Choi , Hyung-Taek Oh , Jong-Hwa Yu , Chul-Woo Lee , Kun-Ho Cho , Pyong-Yong Seong , Jang-Hoon Yoo
IPC分类号： G11B700
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
摘要： A compatible optical pickup capable of recording or reproducing information on or from compact disc (CD) family media such as CD rewritable (CD-RW) and digital versatile disc (DVD) by adopting a stepped planar lens having a plurality of gratings. The compatible optical pickup includes a first optical source for emitting a first light beam having a predetermined wavelength; a second optical source for emitting a second light beam having a long wavelength relative to the first light beam; an optical path changing element for changing the traveling path of an incident light beam; an objective lens for condensing the first and second light beams onto optical discs having different thicknesses, respectively; an optical diffraction element having a first region which directly transmits the first and second light beams incident thereto, and a second region bounding the first region, which directly transmits the incident first light beam and diffractingly transmits the second light beam toward an optical axis; and a photodetector for detecting an information signal and an error signal from the first and second light beam which have been reflected by the optical discs and passed through the optical path changing element. Also, the optical diffraction element is a stepped planar lens in which one or more stepped pattern periods each having a plurality of annular gratings are arranged in the second region, wherein the depths of the gratings become smaller moving away from the optical axis, and the maximum depth thereof is a predetermined value.
摘要翻译：一种兼容的光学拾取器，其能够通过采用具有多个光栅的阶梯式平面透镜来记录或再现诸如CD可重写（CD-RW）和数字通用光盘（DVD）的光盘（CD）族介质上的信息。兼容光学拾取器包括用于发射具有预定波长的第一光束的第一光源; 用于发射相对于第一光束具有长波长的第二光束的第二光源; 用于改变入射光束的行进路径的光路改变元件; 用于将第一和第二光束分别聚光到具有不同厚度的光盘上的物镜; 光学衍射元件，其具有直接透射入射到其上的第一和第二光束的第一区域和限定第一区域的第二区域，该第二区域直接透射入射的第一光束并将第二光束衍射地朝向光轴传播; 以及光检测器，用于检测已被光盘反射并通过光路改变元件的来自第一和第二光束的信息信号和误差信号。此外，光学衍射元件是阶梯式平面透镜，其中在第二区域中布置有具有多个环形光栅的一个或多个阶梯图案周期，其中光栅的深度变得较小，远离光轴移动，并且其最大深度是预定值。

28. 发明授权

US06285646B1 Optical pickup using objective lens compatible with a plurality of optical disks 有权
标题翻译：使用与多个光盘兼容的物镜的光学拾取器
公开(公告)号：US06285646B1
公开(公告)日：2001-09-04
申请号：US09198451
申请日：1998-11-24
申请人： Jang-Hoon Yoo , Yong-Jae Lee , Pyong-Yong Seong , Chul-Woo Lee
发明人： Jang-Hoon Yoo , Yong-Jae Lee , Pyong-Yong Seong , Chul-Woo Lee
IPC分类号： G11B700
CPC分类号： G11B7/1374 , G11B2007/0006
摘要： An optical pickup device including an objective lens which is compatible with a plurality of optical disks of respectively different specifications, such as a digital versatile disk (DVD), a compact disk-recordable (CD-R) medium, a compact disk (CD) and a laser disk (LD). The optical pickup device includes a laser source to emit light, an objective lens to focus the light emitted from the laser source on respective information recording surfaces of a plurality of optical recording media as an optimal optical spot, and an optical detector to detect light reflected from the information recording surface of the optical recording medium on which the optical spot has been focused and transmitted through the objective lens. The objective lens includes a first lens area, a second lens area, and a third lens area to focus the light emitted from the laser source. The first lens area has an aspherical surface corresponding to a first optical recording medium and a second optical recording medium, the second lens area has an aspherical surface corresponding to the second optical recording medium, and the third lens area has an aspherical surface corresponding to the first optical recording medium. As a result, the optical pickup can be compatible with a plurality of the optical disks of a respectively different specification irrespective of the thickness of the disk.
摘要翻译：一种光学拾取装置，包括与分别不同规格的多个光盘兼容的物镜，诸如数字通用盘（DVD），可压缩盘可记录（CD-R）介质，光盘（CD）和激光盘（LD）。光拾取装置包括用于发光的激光源，将从激光源发射的光聚焦到作为最佳光点的多个光记录介质的各个信息记录表面上的物镜，以及检测反射光的光检测器从其上已经聚焦并透过物镜的光记录介质的信息记录表面。物镜包括第一透镜区域，第二透镜区域和用于聚焦从激光源发射的光的第三透镜区域。第一透镜区域具有对应于第一光学记录介质和第二光学记录介质的非球面，第二透镜区域具有对应于第二光学记录介质的非球面，并且第三透镜区域具有对应于第二光学记录介质的非球面第一光记录介质。结果，光拾取器可以与分别不同规格的多个光盘兼容，而与盘的厚度无关。

29. 发明授权

US5903536A Objective lens device, optical pickup adopting the same and method for manufacturing an objective lens 失效
标题翻译：物镜装置，采用该物镜的光学拾取器以及用于制造物镜的方法
公开(公告)号：US5903536A
公开(公告)日：1999-05-11
申请号：US800395
申请日：1997-02-14
申请人： Chul-Woo Lee , Jang-Hoon Yoo
发明人： Chul-Woo Lee , Jang-Hoon Yoo
IPC分类号： G11B7/08 , G01S19/14 , G11B7/00 , G11B7/09 , G11B7/125 , G11B7/13 , G11B7/135 , G11B19/12
CPC分类号： G11B7/1353 , G11B19/12 , G11B7/0945 , G11B7/131 , G11B7/1365 , G11B7/1374 , G11B7/13922 , G11B2007/0006 , G11B7/0909
摘要： An objective lens for reproducing/recording information from/onto discs having different thicknesses and an optical pickup device adopting the same. The objective lens device includes an objective lens provided along a light path facing a plane of a disc and having a predetermined effective diameter, and a light controller provided along the light path for controlling the light of an incident light beam between near and far axes of the objective lens, wherein the central portion of the objective lens corresponding to the near-axis region of the incident light beam has the optimum curvature and aspherical coefficient for both thick and thin discs. Therefore, the objective lens device is simplified and inexpensive. Also, the objective lens device can be used for discs of different thicknesses in a single disc drive, by reducing the spherical aberration effect.
摘要翻译：用于从具有不同厚度的光盘/光盘上再现/记录信息的物镜和采用该物镜的光学拾取装置。物镜装置包括：物镜，沿着与盘的平面相对的光路设置并具有预定的有效直径;以及沿着光路设置的光控制器，用于控制入射光束的近轴和远轴之间的光线物镜，其中对应于入射光束的近轴区域的物镜的中心部分对于厚盘和薄盘具有最佳曲率和非球面系数。因此，物镜装置被简化和便宜。而且，通过减小球面像差效应，物镜装置可以用于单个盘驱动器中不同厚度的盘。

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