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    Magnetic circuit, optical pickup actuator, optical recording and/or reproducing apparatus, and methods therefor
    1.
    发明授权
    Magnetic circuit, optical pickup actuator, optical recording and/or reproducing apparatus, and methods therefor 失效
    磁路，光学拾取器致动器，光学记录和/或再现装置及其方法

    公开(公告)号：US07631322B2

    公开(公告)日：2009-12-08

    申请号：US11043453

    申请日：2005-01-27

    申请人： Hyung-joo Kang ,  Byung-youn Song ,  Pyong-yong Seong ,  Dae-jong Jang

    发明人： Hyung-joo Kang ,  Byung-youn Song ,  Pyong-yong Seong ,  Dae-jong Jang

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0935 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0956

    摘要： A magnetic circuit, an optical pickup actuator, an optical recording and/or reproducing apparatus using the magnetic circuit, and method of the same, wherein the magnetic circuit includes a plurality of focus coil units each of which includes a first focus coil and a second focus coil, and a magnet including a plurality of magnet portions which interact with the plurality of focus coil units and each of which is polarized in a direction opposite to adjacent magnet portions thereamong. Here, electromagnetic forces act on the first and second focus coils in each focus coil unit in a same direction in response to focus driving signals and in opposite directions in response to tilt driving signals, with the first and second focus coils in each focus coil unit have different effective coil lengths.

    摘要翻译： 磁路，光拾取器致动器，使用磁路的光学记录和/或再现装置及其方法，其中磁路包括多个聚焦线圈单元，每个聚焦线圈单元包括第一聚焦线圈和第二聚焦线圈 聚焦线圈和包括与多个聚焦线圈单元相互作用的多个磁体部分的磁体，并且每个磁体在与其相邻的磁体部分相反的方向上被极化。 这里，响应于倾斜驱动信号，响应于聚焦驱动信号和相反方向，电磁力以相同的方向在每个聚焦线圈单元中的第一和第二聚焦线圈上作用，第一和第二聚焦线圈在每个聚焦线圈单元 具有不同的有效线圈长度。

    Optical pickup and optical recording and/or reproducing apparatus adopting the same
    2.
    发明授权
    Optical pickup and optical recording and/or reproducing apparatus adopting the same 有权
    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：US07362689B2

    公开(公告)日：2008-04-22

    申请号：US10926150

    申请日：2004-08-26

    申请人： Sun-mook Park ,  Jin-ho Jung ,  Pyong-yong Seong

    发明人： Sun-mook Park ,  Jin-ho Jung ,  Pyong-yong Seong

    IPC分类号： G11B7/00

    CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/094 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

    摘要： An optical pickup which, when a first light reflected by a recording medium is divided into a central light area and first and second peripheral light areas at both sides of the central light area, divides the first light reflected by the recording medium into at least 6 light areas, and the at least 6 light areas are independently detected from first through sixth light-receiving portions of a photodetector. Hence, the photodetector can detect a tracking error signal whose offset generation due to a shift of an objective lens is insensitive and whose offset generation due to an initial photodetector balance deviation is depressed.

    摘要翻译： 一种光拾取器，当由记录介质反射的第一光被分成中心光区域和中心光区域两侧的第一和第二周边光区域时，将由记录介质反射的第一光分成至少6个 光区域，并且至少6个光区域被独立地从光电检测器的第一至第六光接收部分检测。 因此，光检测器可以检测由于物镜的偏移引起的偏移产生不敏感并且由于初始光电检测器平衡偏差导致的偏移产生被抑制的跟踪误差信号。

    Optical pickup apparatus and optimal light spot focusing method
    3.
    发明授权
    Optical pickup apparatus and optimal light spot focusing method 有权
    光拾取装置和最佳光点聚焦法

    公开(公告)号：US07280458B2

    公开(公告)日：2007-10-09

    申请号：US10120786

    申请日：2002-04-12

    申请人： Yong-jae Lee ,  Sung-ro Go ,  Pyong-yong Seong ,  Chang-jin Yang ,  Gi-bong Song ,  Byung-in Ma ,  Jong-koog Lee

    发明人： Yong-jae Lee ,  Sung-ro Go ,  Pyong-yong Seong ,  Chang-jin Yang ,  Gi-bong Song ,  Byung-in Ma ,  Jong-koog Lee

    IPC分类号： G11B7/95

    CPC分类号： G11B7/131 ,  G11B7/00718 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0946 ,  G11B7/0956 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical pickup apparatus includes a first light source to emit a first light beam having a predetermined wavelength, a first optical path changer to change a proceeding path of the first light beam, an objective lens to focus the first light beam on a recording medium, a diffraction member to divide the first light beam reflected by the recording medium into five light regions, the diffraction member having a first diffraction region having a wide width in a direction corresponding to a tangential direction of the recording medium and second through fifth diffraction regions sequentially arranged around the outside of the first diffraction region in a direction corresponding to a radial direction of the recording medium, and a first photodetector having first through fifth light receiving portions to receive the first light beam reflected by the recording medium.

    摘要翻译： 一种光拾取装置包括：发射具有预定波长的第一光束的第一光源;改变第一光束的行进路径的第一光路改变器;将第一光束聚焦在记录介质上的物镜; 衍射构件，用于将由记录介质反射的第一光束分成五个光区域，衍射构件具有在与记录介质的切线方向对应的方向上具有宽宽度的第一衍射区域和第二至第五衍射区域 在与所述记录介质的径向对应的方向上围绕所述第一衍射区域的外侧布置;以及第一光电检测器，具有第一至第五光接收部分，以接收由所述记录介质反射的所述第一光束。

    Optical pickup and a wedge beam splitter
    4.
    发明授权
    Optical pickup and a wedge beam splitter 有权
    光拾取器和楔形分束器

    公开(公告)号：US07251209B2

    公开(公告)日：2007-07-31

    申请号：US10424821

    申请日：2003-04-29

    申请人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

    发明人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1263 ,  G11B7/1275 ,  G11B7/1395 ,  G11B2007/0006

    摘要： An optical pickup for a recording medium includes a light source, an objective lens, a main photodetector, and a front photodetector. The configuration of the optical pickup enables converging or diverging of light to be incident on a plate beam splitter so that light can be received at an effective light receiving region of a front photodetector without interference due to internal reflection occurring in the plate beam splitter. In the alternative, a wedge beam splitter in the optical pickup includes first and second mirror planes at a predetermined angle to transmit and reflect incident light at a predetermined ratio. In the optical pickup, an amount of light that is exactly proportional to an output power of the light source can be detected, where the output power of the light source can be accurately controlled, thereby improving a linearity of the output power of the light source.

    摘要翻译： 用于记录介质的光学拾取器包括光源，物镜，主光电检测器和前光电检测器。 光拾取器的配置使得入射到平板光束分离器上的光会聚或发散，使得可以在前光电检测器的有效光接收区域处接收光，而不会由于在板分光器中发生内反射而受到干扰。 或者，光学拾取器中的楔形光束分离器包括预定角度的第一和第二反射镜平面，以预定比例透射和反射入射光。 在光学拾取器中，可以检测与光源的输出功率正好成正比的光量，其中可以精确地控制光源的输出功率，从而提高光源的输出功率的线性 。

    Method and apparatus for identifying the type of optical recording medium
    5.
    发明授权
    Method and apparatus for identifying the type of optical recording medium 有权
    用于识别光学记录介质的类型的方法和设备

    公开(公告)号：US07203148B2

    公开(公告)日：2007-04-10

    申请号：US10419786

    申请日：2003-04-22

    申请人： Jong-ryull Kim ,  Pyong-yong Seong ,  No-jun Kwak ,  Chul-ho Jeon ,  Ki-bong Yun ,  Bong-hwoan Choi

    发明人： Jong-ryull Kim ,  Pyong-yong Seong ,  No-jun Kwak ,  Chul-ho Jeon ,  Ki-bong Yun ,  Bong-hwoan Choi

    IPC分类号： G11B7/00

    CPC分类号： G11B19/127 ,  G11B2007/0006

    摘要： A method and an apparatus for identifying the type of an optical recording medium are provided. The method includes detecting a surface reflected signal SS and a writable-surface reflected signal SR of an optical recording medium while performing a focus search using a first optical system, counting a time difference DTS between a high peak and a low peak of the surface reflected signal SS, counting a time difference DTR between the high peak of the surface reflected signal and a high peak of the writable-surface reflected signal SR, obtaining DT by substituting DTR and DTS into the following equation: DT = ( DT R ) a ( DT S ) b ⁢ ⁢ ( a - b ≥ 1 2 ) and comparing DT with a reference time T, and driving the first optical system if DT is greater than T and driving a second optical system if DT is not greater than T.

    摘要翻译： 提供了一种用于识别光学记录介质的类型的方法和装置。 该方法包括在使用第一光学系统执行聚焦搜索的同时检测光学记录介质的表面反射信号S S S S和可写表面反射信号S SUB S R S，计数 在表面反射信号S S S的高峰值和低峰值之间的时差DT S S / S，计数在表面反射信号S S S上的时间差DT＆lt; S＆lt; 表面反射信号的高峰值和可写表面反射信号S的高峰值，通过用DT＆lt; R＆gt;和DT＆lt; S＆gt;和＆lt; >进入以下公式：

    Magnetic circuit and optical recording and/or reproducing apparatus employing the same
    8.
    发明申请
    Magnetic circuit and optical recording and/or reproducing apparatus employing the same 有权
    磁路和采用该磁路的光学记录和/或再现装置

    公开(公告)号：US20050185531A1

    公开(公告)日：2005-08-25

    申请号：US11012732

    申请日：2004-12-16

    申请人： Dae-jong Jang ,  Byung-youn Song ,  Pyong-yong Seong

    发明人： Dae-jong Jang ,  Byung-youn Song ,  Pyong-yong Seong

    IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/00

    CPC分类号： G11B7/0956 ,  G11B7/0933 ,  G11B7/0935

    摘要： A magnetic circuit and an optical recording and/or reproducing apparatus employing the magnetic circuit, having: a magnet with first and second magnetic portions adjacent to each other and opposite in polarity, and third and fourth magnetic portions surrounding the first and second magnetic portions, respectively, and have opposite polarities to the first and second magnetic portions, respectively; and at least one of a tracking coil unit or a focus coil unit. The tracking coil unit has first through third tracking coils arranged in a tracking direction so that each tracking coil interacts with two of the first through fourth magnetic portions. The focus coil unit has first through fourth focus coils, two of which are disposed in a focus direction to interact with the first and third magnetic portions, and the remaining two of which are disposed in the focus direction to interact with second and fourth magnetic portions.

    摘要翻译： 一种使用磁路的磁路和光记录和/或再现装置，具有：具有彼此相邻并且极性相反的第一和第二磁性部分的磁体以及包围第一和第二磁性部分的第三和第四磁性部分， 分别具有与第一和第二磁性部分相反的极性; 以及跟踪线圈单元或聚焦线圈单元中的至少一个。 跟踪线圈单元具有沿跟踪方向布置的第一至第三跟踪线圈，使得每个跟踪线圈与第一至第四磁性部分中的两个相互作用。 聚焦线圈单元具有第一至第四聚焦线圈，其中两个聚焦线圈沿焦点方向设置以与第一和第三磁性部分相互作用，其余两个被设置在聚焦方向上以与第二和第四磁性部分相互作用 。

    Circuit to protect a light element
    9.
    发明授权
    Circuit to protect a light element 有权
    电路保护轻元素

    公开(公告)号：US06686697B2

    公开(公告)日：2004-02-03

    申请号：US10281233

    申请日：2002-10-28

    申请人： Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

    发明人： Myoung-cheol Cho ,  Byung-ryul Ryoo ,  Kyung-ui Park ,  Ui-yol Kim ,  Pyong yong Seong

    IPC分类号： H05B4136

    CPC分类号： H05B33/089 ,  Y02B20/341

    摘要： A circuit protects a light element and prevents a breakdown of a laser diode (LD) when electric static discharge (ESD) occurs. The circuit protects the light element in a drive to control an operation of the light element, which radiates light onto a disc. Here, the drive includes a switch between an active node of the light element and a predetermined potential so that the switch is short-circuited in a normal state, but is open when the drive operates. The light element is protected from static electricity or a surge voltage in a manufacturing process thereof or under a user environment. As a result, the probability that the light element is broken down is remarkably reduced.

    摘要翻译： 电路保护光元件并防止当发生静电放电（ESD）时激光二极管（LD）的击穿。 电路保护驱动器中的光元件以控制将光照射到盘上的光元件的操作。 这里，驱动器包括在光元件的主动节点和预定电位之间的开关，使得开关在正常状态下短路，但是当驱动器工作时打开。 光元件在其制造过程中或在用户环境下被保护免受静电或浪涌电压的影响。 结果，光元件分解的概率显着降低。