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81. 发明授权

US07079471B1 OPTICAL PICKUP USING TWO LASER BEAM SOURCES OF DIFFERENT WAVELENGTHS FOR AN OPTICAL DISK DRIVE AND A CONVERTER TO OPTIMIZE A LIGHT BEAM REFLECTED OFF AN OPTICAL DISC FOR DETECTION BASED ON REFLECTED LIGHT BEAM WAVELENGTH 失效
标题翻译：光学拾取使用两个不同波长的激光束光源，用于光盘驱动器和转换器，以根据反射的光束波长优化用于检测光源的光束。
公开(公告)号：US07079471B1
公开(公告)日：2006-07-18
申请号：US09442095
申请日：1999-11-17
申请人： Chong-sam Chung , Chul-woo Lee , In-sik Park
发明人： Chong-sam Chung , Chul-woo Lee , In-sik Park
IPC分类号： G11B7/135
CPC分类号： G11B7/1376 , G11B7/1353 , G11B2007/0006
摘要： First and second laser beam sources generate first and second laser beams of different wavelengths, respectively. A first collimating lens diverges the first laser beam at a predetermined angle so as to permit a fracture surface aberration of the first laser beam to fall below a predetermined value when the first laser beam generated from the first laser beam source is collected on the signal layer of the optical disk. A light receiving lens collects the laser beam reflected from the signal layer of the optical disk on a photo diode in the form of an optical spot of a predetermined size. A holographic lens has a pattern by which the first laser beam is converted into parallel rays so that the size of a spot of the first laser beam becomes identical with the size of a spot of the second laser beam as projected on the detecting section. The pattern of the holographic lens has a concentric annular concave-convex portion in which a plurality of annular prominences and depressions are arranged, and the depression and the prominence have a width which is gradually decreased from a center toward a most outer circumference of the concentric annular concave-convex portion. Further, an inner surface of each prominence has a step-like shape formed with at least one step. Preferably, the number of the step ranges from three to five. Accordingly, diameters of the optical spots of the two laser beams of different wavelengths are almost identical when the laser beams are transmitted through the holographic lens so that the optical spots are formed on the photo diode. As a result, with one objective lens and photo diode, information of two types of optical disks for laser beams of different wave lengths can be reproduced.
摘要翻译：第一和第二激光束源分别产生不同波长的第一和第二激光束。第一准直透镜将第一激光束以预定角度分开，以便当从第一激光束源产生的第一激光束收集在信号层上时，允许第一激光束的断裂表面像差降至预定值以下的光盘。光接收透镜以预定尺寸的光点的形式收集从光盘的信号层反射的光电二极管上的激光束。全息透镜具有将第一激光束转换为平行光线的图案，使得第一激光束的光斑的尺寸与投影在检测部上的第二激光束的光斑尺寸相同。全息透镜的图案具有同心环状的凹凸部，在该同心环状的凹凸部中配置有多个环状突起和凹部，凹部和凸部的宽度从同心的中心向最外周逐渐减小环形凹凸部。此外，每个凸起的内表面具有形成有至少一个台阶的台阶状。优选地，步数为3至5。因此，当激光束透射通过全息透镜时，两个不同波长的激光束的光点的直径几乎相同，使得光斑形成在光电二极管上。结果，利用一个物镜和光电二极管，可以再现不同波长的激光束的两种类型的光盘的信息。

82. 发明申请

US20060092789A1 Method for detecting servo error, apparatus therefor, disk which maintains quality of servo error signal, method of controlling servo of disk recording/reproducing apparatus, method of detecting tracking error, and method of detecting tilt error 有权
标题翻译：用于检测伺服误差的方法，其装置，保持伺服误差信号质量的盘，控制盘记录/重放装置伺服的方法，检测跟踪误差的方法以及检测倾斜误差的方法
公开(公告)号：US20060092789A1
公开(公告)日：2006-05-04
申请号：US11304636
申请日：2005-12-16
申请人： Seong-sin Joo , In-sik Park , Byung-in Ma , Chong-sam Chung , Jang-hoon Yoo , Jung-wan Ko , Kyung-geun Lee , Joong-eon Seo
发明人： Seong-sin Joo , In-sik Park , Byung-in Ma , Chong-sam Chung , Jang-hoon Yoo , Jung-wan Ko , Kyung-geun Lee , Joong-eon Seo
IPC分类号： G11B7/00
CPC分类号： G11B7/00718 , G11B7/0901 , G11B7/0938 , G11B7/0941 , G11B7/0956
摘要： An apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, includes a reproducing signal generator for generating a reproducing signal including sum signals V1 and V2 of radial pairs, a sum signal RF_sum, and a push-pull signal RF_pp from an optical signal reflected from the disk, a header area detector for generating a header area signal including a header area from the reproducing signal, a first synchronous signal level detector for detecting a magnitude Ivfo1 of a first synchronous signal in the first header by being synchronized with the header area signal, a second synchronous signal level detector for detecting a magnitude Ivfo3 of a second synchronous signal in the second header by being synchronized with the header area signal, and a balance calculator for calculating the balance of the magnitude Ivfo1 and the magnitude Ivfo3.
摘要翻译：一种用于在盘中将数据记录在数据上并将数据从记录区划分成多个扇区的装置，包括一个再现信号发生器，用于产生包括径向对的和信号V 1和V 2的再现信号，和信号RF_sum和来自从盘反射的光信号的推挽信号RF_pp，用于产生包含来自再现信号的标题区的标题区信号的报头区检测器，用于检测第一同步信号的幅度Ivfo1的第一同步信号电平检测器信号通过与标题区域信号同步在第一标题中;第二同步信号电平检测器，用于通过与标题区域信号同步来检测第二标题中的第二同步信号的幅度Ivfo 3;以及用于计算的平衡计算器幅度Ivfo 1和幅度Ivfo 3的平衡。

83. 发明授权

US06961292B2 Apparatus generating a seek direction detecting signal for an optical pickup using track cross and track error signals 失效
标题翻译：用于使用轨道交叉和轨道误差信号产生用于光学拾取器的寻道方向检测信号的装置
公开(公告)号：US06961292B2
公开(公告)日：2005-11-01
申请号：US09817754
申请日：2001-03-27
申请人： Byung-in Ma , Chong-sam Chung , In-sik Park , Byoung-ho Choi , Tae-yong Doh
发明人： Byung-in Ma , Chong-sam Chung , In-sik Park , Byoung-ho Choi , Tae-yong Doh
IPC分类号： G11B7/135 , G11B7/085 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/08505 , G11B7/0943 , G11B7/133 , G11B7/1353
摘要： An apparatus generating a seek direction detecting signal includes a light dividing unit dividing an incident light beam into at least two beams having a main beam and a sub-beam so that at least two beam spots including a main beam spot and at least one sub-beam spot having an optical aberration, can be focused in the track direction of an optical disk, the light dividing unit providing that the direction of the optical aberration of the sub-beam spot can be the tangential direction of the optical disk, an optical detector unit, a first signal processing portion processing a track error signal from signals output from the optical detector, a second signal processing portion processing a track cross signal from the signals output from the optical detector, and a generator generating the seek direction detecting signal from the phase difference between the track cross signal and the track error signal.
摘要翻译：产生搜索方向检测信号的装置包括：光分离单元，将入射光束分成至少两束具有主光束和子光束的光束，使得至少两个光束点包括主光束斑点和至少一个子光束点，具有光学像差的光束点可以在光盘的轨道方向上聚焦，所述光分割单元使得子光束点的光学像差的方向可以是光盘的切线方向，光学检测器单元，第一信号处理部分，从光检测器输出的信号处理轨道误差信号;第二信号处理部分，处理来自光检测器输出的信号的轨道交叉信号;以及发生器，其生成来自所述光检测器的寻道方向检测信号轨道交叉信号和轨道误差信号之间的相位差。

84. 发明申请

US20050152240A1 Error signal detection apparatus and method for optical recording/reproducing system 失效
标题翻译：用于光学记录/再现系统的误差信号检测装置和方法
公开(公告)号：US20050152240A1
公开(公告)日：2005-07-14
申请号：US11079109
申请日：2005-03-15
申请人： Byung-in Ma , Byoung-ho Choi , Chong-sam Chung , In-sik Park , Tae-yong Doh
发明人： Byung-in Ma , Byoung-ho Choi , Chong-sam Chung , In-sik Park , Tae-yong Doh
IPC分类号： G11B7/095 , G11B7/13 , G11B7/00
CPC分类号： G11B7/131 , G11B7/0956
摘要： An error signal detection method includes detecting light incident through an objective lens after having been reflected and diffracted from a recording medium, as eight light portions in a matrix including four inner light portions and four outer light portions, wherein the rows and columns of the matrix are parallel to the tangential and radial direction of the recording medium, respectively; calculating a first sum signal by summing a detection signal from at least one outer light portion located in a first diagonal direction, and a detection signal from an inner light portion located in a second diagonal direction; calculating second sum signal by summing a detection signal from an inner light portion located in the first diagonal direction, and a detection signal from an outer light portion located in the second diagonal direction; and comparing phases of the first and second sum signals to detect a tilt error signal.
摘要翻译：误差信号检测方法包括检测从记录介质反射和衍射之后通过物镜入射的光，作为包括四个内部光部分和四个外部光部分的矩阵中的八个光部分，其中矩阵的行和列分别与记录介质的切向和径向方向平行; 通过对来自位于第一对角线方向的至少一个外部光部分的检测信号和来自位于第二对角线方向的内部光部分的检测信号求和来计算第一和信号; 通过对来自位于第一对角线方向的内部光部分的检测信号和来自位于第二对角线方向的外部光部分的检测信号进行求和来计算第二和信号; 以及比较第一和第二和信号的相位以检测倾斜误差信号。

85. 发明授权

US06788645B2 Disk cartridge 失效
标题翻译：磁盘盒
公开(公告)号：US06788645B2
公开(公告)日：2004-09-07
申请号：US10077959
申请日：2002-02-20
申请人： Han-kook Choi , Yong-hoon Lee , Chong-sam Chung , Heui-jong Kang
发明人： Han-kook Choi , Yong-hoon Lee , Chong-sam Chung , Heui-jong Kang
IPC分类号： G11B2303
CPC分类号： G11B23/0308
摘要： A disk cartridge includes a case which contains a disk, and a shutter which opens/closes at least one opening formed in the case. The shutter is configured to be foldable around upper and lower surfaces of the case, and slides on the upper and lower surfaces of the case to open/close the opening. Since the shutter opens/closes the opening while being folded around the upper and lower surfaces of the case, a movable distance of the shutter for opening/closing the opening can be fully accommodated even though the size of the disk cartridge is reduced. In addition, applying the configuration of the shutter to a double-sided disk cartridge prevents an inflow of dust from entering into the double-sided disk cartridge since the shutter closes an opening, which is not in use, during a recording/reproducing operation.
摘要翻译：磁盘盒包括一个包含一个磁盘的壳体和一个打开/关闭形成在壳体中的至少一个开口的挡板。挡板被构造成围绕壳体的上表面和下表面可折叠，并且在壳体的上表面和下表面上滑动以打开/关闭开口。由于快门在围绕壳体的上表面和下表面折叠的同时打开/关闭开口，所以即使减小了盘盒的尺寸，也可以完全容纳用于打开/关闭开口的快门的可移动距离。此外，将快门的配置应用于双面盘盒防止灰尘进入双面盘盒，因为在记录/再现操作期间快门关闭不使用的开口。

86. 发明授权

US06687201B2 Apparatus for generating seek direction detection signal 失效
标题翻译：用于产生寻道方向检测信号的装置
公开(公告)号：US06687201B2
公开(公告)日：2004-02-03
申请号：US09846264
申请日：2001-05-02
申请人： Byung-in Ma , Chong-sam Chung , In-sik Park , Byoung-ho Choi , Tae-yong Doh , Jin-hoon Jeon
发明人： Byung-in Ma , Chong-sam Chung , In-sik Park , Byoung-ho Choi , Tae-yong Doh , Jin-hoon Jeon
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/00718 , G11B7/08505 , G11B7/0903 , G11B7/0943 , G11B7/0956 , G11B7/131 , G11B7/13922 , G11B7/1398
摘要： An apparatus for use in an optical disc includes an optical disc and an optical branching unit irradiating a main light beam and a sub-light beam, wherein the sub-light beam includes a optical aberration in a direction on a track of the optical disc. The apparatus further includes a photodetector including a plurality of portions receiving and processing the main light beam and a plurality of portions receiving and processing the sub-light beam. A track error signal detector detects a track error signal from the portions receiving the main light beam. A track cross signal detector detects a track cross signal from the portions receiving the main light beam and from the portions receiving the sub-light beam. A signal processor further compares the track error signal with the track cross signal to detect the seek direction of a light spot formed on the optical disc.
摘要翻译：用于光盘的装置包括光盘和照射主光束和副光束的光分支单元，其中副光束包括在光盘的轨道上的方向上的光学像差。该装置还包括一个光电检测器，它包括接收和处理主光束的多个部分和接收和处理子光束的多个部分。轨道误差信号检测器从接收主光束的部分检测轨道误差信号。轨道交叉信号检测器检测来自接收主光束的部分和接收子光束的部分的轨道交叉信号。信号处理器还将轨道误差信号与轨道交叉信号进行比较，以检测形成在光盘上的光点的寻道方向。

87. 发明授权

US06442124B1 Compatible optical pick-up apparatus for recording and reproducing information from recording media having different formats 失效
标题翻译：用于从具有不同格式的记录介质记录和再现信息的兼容的光学拾取装置
公开(公告)号：US06442124B1
公开(公告)日：2002-08-27
申请号：US09219342
申请日：1998-12-23
申请人： Chong-sam Chung , Yong-hoon Lee , In-shik Park
发明人： Chong-sam Chung , Yong-hoon Lee , In-shik Park
IPC分类号： G11B7135
CPC分类号： G11B7/1374 , G11B7/123 , G11B7/1275 , G11B7/1353 , G11B7/1356 , G11B7/1381 , G11B2007/0006
摘要： An optical pick-up apparatus for recording and reproducing information from recording media using a first, second, and third light source to emit light beams having various wavelengths corresponding to a first, second and third recording media, respectively. A dichroic beam splitter has a first, second, and third input surface for receiving the light beams emitted from the first, second and third light sources, respectively, and an output surface through which the light beams received through the input surfaces is transmitted toward the first, second, and third recording media. A converging device converges the light beams transmitted through the output surface of the dichroic beam splitter toward the first, second, and third recording media, and a photodetector receives light beams reflected from the first, second, and third recording media that has been transmitted through the dichroic beam splitter.
摘要翻译：一种光拾取装置，用于使用第一，第二和第三光源从记录介质记录和再现信息，以分别发射具有对应于第一，第二和第三记录介质的各种波长的光束。二向色光束分离器具有第一，第二和第三输入表面，用于分别接收从第一，第二和第三光源发射的光束，以及输出表面，通过输入表面接收的光束被朝向第一，第二和第三记录媒体。会聚装置将透射通过二向色分束器的输出表面的光束朝向第一，第二和第三记录介质收敛，并且光电检测器接收从第一，第二和第三记录介质反射的光束，其已被透射二向色分束器。

88. 发明授权

US6114689A Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US6114689A
公开(公告)日：2000-09-05
申请号：US299664
申请日：1999-04-27
申请人： Kun-ho Cho , Jang-hoon Yoo , Yong-hoon Lee , Chul-woo Lee , Chong-sam Chung
发明人： Kun-ho Cho , Jang-hoon Yoo , Yong-hoon Lee , Chul-woo Lee , Chong-sam Chung
IPC分类号： G02B3/08 , G02B5/18 , G02B13/00 , G11B7/1374 , G02B3/00 , G11B7/12
CPC分类号： G11B7/1353 , G02B3/08 , G02B5/1876 , G11B7/122 , G11B7/1362 , G11B7/1374 , G11B7/1384 , G11B7/1387
摘要： An optical pickup device includes a light module, emitting light and receiving light reflected from a recording medium, and a solid immersion lens (SIL) member disposed in an optical path between the light module and the recording medium. The SIL has a planar surface facing the recording medium and a plurality of elliptically curved surfaces opposite the recording medium. The elliptically curved surfaces have different radii of curvature arranged symmetrical with respect to a central axis for focusing the incident light to form a tight beam spot on a recording plane of the recording medium.
摘要翻译：一种光学拾取装置，包括发光和接收从记录介质反射的光的光模块和设置在光模块和记录介质之间的光路中的固体浸没透镜（SIL）部件。 SIL具有面向记录介质的平面和与记录介质相对的多个椭圆曲面。椭圆曲面具有相对于中心轴对称布置的不同的曲率半径，用于聚焦入射光以在记录介质的记录平面上形成紧束光斑。

89. 发明授权

US6081498A Optical pickup compatible with recordable compact disk and digital video disk using plane parallel plates 失效
标题翻译：光拾取器兼容可记录光盘和使用平面平行板的数字视频盘
公开(公告)号：US6081498A
公开(公告)日：2000-06-27
申请号：US14621
申请日：1998-01-28
申请人： Jang-hoon Yoo , Chul-woo Lee , Chong-sam Chung
发明人： Jang-hoon Yoo , Chul-woo Lee , Chong-sam Chung
IPC分类号： G11B7/135 , G11B7/00 , G11B7/12 , G11B7/125
CPC分类号： G11B7/1365 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup is compatible with at least two types of optical recording media each using light beams having different wavelengths from one another and which are used for recording and reproducing information. The optical pickup includes a first laser light source for emitting a first light beam having a relatively long wavelength, and a second laser light source for emitting a second light beam having a relatively short wavelength. A beam splitting plate transmits the first light beam and reflects the second light beam toward a collimator. The collimator collimates the light beam incident from the beam splitting plate to transmit the collimated light beam into an objective lens. The objective lens is designed so that the second light beam is focused on the information recording surface of a second optical recording medium whose information recording surface is closer to the objective lens than the information recording surface of the first optical recording medium, to form an optical spot optimized to the second optical recording medium. The optical distance from the first laser light source to the information recording surface of a first optical recording medium whose information recording surface is relatively farther from the objective lens, is shorter than the optical distance from the second laser light source to the information recording surface of the second optical recording medium so that spherical aberration occurring when the first light beam is used is removed. An aberration correction plate is located on an optical path between the first laser light source and the beam splitting plate, and corrects an optical aberration occurring when the beam splitting plate is used.
摘要翻译：光学拾取器与至少两种类型的光学记录介质兼容，每种光学记录介质使用彼此不同波长的光束并且用于记录和再现信息。光学拾取器包括用于发射具有较长波长的第一光束的第一激光光源和用于发射具有较短波长的第二光束的第二激光光源。分束板透射第一光束并将第二光束反射到准直仪。准直器准直从分束板入射的光束，将准直光束传输到物镜中。物镜被设计成使得第二光束聚焦在其信息记录表面比第一光学记录介质的信息记录表面更靠近物镜的第二光学记录介质的信息记录表面上，以形成光学对第二光记录介质进行优化。从第一激光光源到其信息记录表面相对远离物镜的第一光记录介质的信息记录表面的光学距离比从第二激光光源到信息记录表面的光学距离短第二光学记录介质，使得当使用第一光束时发生的球面像差被去除。像差校正板位于第一激光光源和分束板之间的光路上，并且校正当使用分束板时发生的光学像差。

90. 发明授权

US5991254A Optical pickup having a multi-coated polarization holographic element 失效
标题翻译：具有多层偏振全息元件的光学拾取器
公开(公告)号：US5991254A
公开(公告)日：1999-11-23
申请号：US903063
申请日：1997-07-30
申请人： Chul-woo Lee , Keon-ho Cho , Chong-sam Chung
发明人： Chul-woo Lee , Keon-ho Cho , Chong-sam Chung
IPC分类号： G11B7/00
CPC分类号： G11B7/1365 , G11B7/1353
摘要： An optical pickup adopting a multi-coated polarization holographic optical element (HOE). The optical pickup has a light source, an objective lens for converging light emitted from the light source on a recording medium, a holographic optical element (HOE) arranged along an optical path between the light source and the objective lens, for changing traveling of the incident light, a phase delay plate arranged between the HOE and the recording medium, for changing a polarization direction of the incident light, and a photodetector for receiving the light reflected by the recording medium, wherein the HOE includes a polarization beam splitter for transmitting one polarized light component of the incident light and reflecting the other polarized light component thereof; and a reflection member having a hologram pattern for diffracting the light passed through the polarization beam splitter, for reflecting the incident light, and wherein the HOE is arranged at an angle between the light source and the phase delay plate. Also, when a transmission-type HOE is adopted, the phase delay plate is arranged at an angle along the optical path between the HOE and the objective lens and includes multiple coating layers for transmitting one polarized light component of the light incident from the light source and reflecting the other polarized light component, and a reflection layer formed on one side of the multiple coating layers, for completely reflecting the incident light.
摘要翻译：采用多层偏振全息光学元件（HOE）的光学拾取器。光拾取器具有光源，用于将从光源发射的光会聚在记录介质上的物镜，沿着光源和物镜之间的光路布置的全息光学元件（HOE），用于改变入射光，布置在HOE和记录介质之间的相位延迟板，用于改变入射光的偏振方向;以及光电检测器，用于接收由记录介质反射的光，其中HOE包括偏振分束器，用于传输一个入射光的偏振光分量并反射其他偏振光分量; 以及反射构件，其具有用于衍射穿过偏振分束器的光用于反射入射光的全息图，并且其中HOE以光源和相位延迟板之间的角度布置。此外，当采用透射型HOE时，相位延迟板沿着HOE和物镜之间的光路以一定角度布置，并且包括多个涂覆层，用于透射从光源入射的光的一个偏振光分量并且反射另一个偏振光分量，以及形成在多个涂层的一侧上的反射层，用于完全反射入射光。

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