公开(公告)号：US07631322B2

公开(公告)日：2009-12-08

申请号：US11043453

申请日：2005-01-27

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

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

IPC: G11B7/00

CPC classification number: G11B7/0935 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0956

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07362689B2

公开(公告)日：2008-04-22

申请号：US10926150

申请日：2004-08-26

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

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

IPC: G11B7/00

CPC classification number: G11B7/131 ,  G11B7/0901 ,  G11B7/094 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07280458B2

公开(公告)日：2007-10-09

申请号：US10120786

申请日：2002-04-12

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

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

IPC: G11B7/95

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07251209B2

公开(公告)日：2007-07-31

申请号：US10424821

申请日：2003-04-29

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

Inventor： 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: G11B7/135

CPC classification number: G11B7/1263 ,  G11B7/1275 ,  G11B7/1395 ,  G11B2007/0006

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US07203148B2

公开(公告)日：2007-04-10

申请号：US10419786

申请日：2003-04-22

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

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

IPC: G11B7/00

CPC classification number: G11B19/127 ,  G11B2007/0006

Abstract: 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.

Abstract translation: 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：

公开(公告)号：US20060188269A1

公开(公告)日：2006-08-24

申请号：US11413093

申请日：2006-04-28

Applicant: Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

Inventor： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC: H04B10/06

CPC classification number: G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

Abstract: An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

公开(公告)号：US20050185531A1

公开(公告)日：2005-08-25

申请号：US11012732

申请日：2004-12-16

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

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

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

CPC classification number: G11B7/0956 ,  G11B7/0933 ,  G11B7/0935

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US6167004A

公开(公告)日：2000-12-26

申请号：US433296

申请日：1999-11-03

Applicant: Yong-jae Lee ,  Tae-Kyung Kim ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Seok-jung Kim

Inventor： Yong-jae Lee ,  Tae-Kyung Kim ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Byung-ryul Ryoo ,  Yong-ki Son ,  Seok-jung Kim

IPC: G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B7/00

CPC classification number: G11B7/131 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353

Abstract: An error signal detecting apparatus for an optical pickup employing a hologram grating, including a sensing lens for focusing light reflected from a recording medium, a hologram grating having first through fourth pattern regions arranged clockwise in a 2.times.2 matrix arrangement, for diffracting light incident from the sensing lens in different directions, wherein the first through fourth pattern regions a, b, c and d are formed such that a first focus of the +1st-order diffracted beams diffracted by the first and third pattern regions is relatively farther from the sensing lens than a second focus of the +1st-order diffracted beams diffracted by the second and fourth pattern regions, a photodetector disposed between the first and second focuses and having first through fourth light receiving units, for receiving the beams diffracted by the first through fourth pattern regions and independently photoelectrically converting the same, and a signal operation unit for detecting a focus error signal and/or a track error signal from detection signals of the light receiving parts. The error signal detecting apparatus can suppress generation of an offset of a focus error signal due to a change in the wavelength of a light source and an offsets of the focus error signal and track offset signal due to deviations of the photodetector.

Abstract translation: 一种用于采用全息光栅的光学拾取器的误差信号检测装置，包括用于聚焦从记录介质反射的光的感测透镜，具有以2x2矩阵排列顺时针排列的第一至第四图案区域的全息图光栅，用于衍射从 感光透镜，其中第一至第四图案区域a，b，c和d被形成为使得由第一和第三图案区域衍射的+ 1级衍射光束的第一焦点相对较远离感测透镜 比由第二和第四图案区域衍射的+ 1级衍射光束的第二焦点，设置在第一和第二焦点之间并具有第一至第四光接收单元的光电检测器，用于接收由第一至第四图案衍射的光束 区域并独立地对其进行光电转换;以及信号操作单元，用于检测聚焦误差 信号和/或来自光接收部分的检测信号的轨道误差信号。 误差信号检测装置可以抑制由于光源的波长的变化引起的聚焦误差信号的偏移的产生以及由于光电检测器的偏差引起的聚焦误差信号和光道偏移信号的偏移。

公开(公告)号：US08416672B2

公开(公告)日：2013-04-09

申请号：US12963785

申请日：2010-12-09

Applicant: Ui-yol Kim ,  Yong-jae Lee ,  Pyong-yong Seong ,  Hong-kuk Kim

Inventor： Ui-yol Kim ,  Yong-jae Lee ,  Pyong-yong Seong ,  Hong-kuk Kim

IPC: G11B7/13

CPC classification number: G11B7/131 ,  G11B2007/0006

Abstract: An optical pickup, photodetector, and optical drive adopting the optical pickup are provided. The optical pickup may include a light emitting system having a plurality of light sources corresponding to a plurality of mediums a light receiving system including a photodetector for converting light reflected from a medium into an electrical signal. The photodetector may include first and second light receiving sensors corresponding to the plurality of mediums, each of the first and second light receiving sensors comprising a plurality of regions, each region comprising a plurality of sectors. The plurality of regions of the first and second light receiving sensors may include shared sectors that are shared by the first and second light receiving sensors and exclusive sectors that are exclusively used in the first light receiving sensor or the second light receiving sensor.

Abstract translation: 提供采用光学拾取器的光学拾取器，光电检测器和光学驱动器。 光拾取器可以包括具有对应于多个介质的多个光源的发光系统，光接收系统包括用于将从介质反射的光转换成电信号的光电检测器。 光电检测器可以包括对应于多个介质的第一和第二光接收传感器，第一和第二光接收传感器中的每一个包括多个区域，每个区域包括多个扇区。 第一和第二光接收传感器的多个区域可以包括由第一和第二光接收传感器共享的共享扇区和专门用于第一光接收传感器或第二光接收传感器的专用扇区。

公开(公告)号：US07343103B2

公开(公告)日：2008-03-11

申请号：US11413093

申请日：2006-04-28

Applicant: Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

Inventor： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC: H04B10/08 ,  H04B10/06

CPC classification number: G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

Abstract: An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

Abstract translation: 一种用于使用单个装置来检测由多个光源产生的光束功率的装置和方法。 该装置包括接收由多个光源中的一个产生的光束功率的光接收单元和选择增益的放大单元，根据所选择的增益放大由光接收单元接收的光束功率，以及 输出放大的光束功率作为检测到的光束功率。 根据该装置和方法，通过根据各个光源的特性确定的增益来放大接收光束功率（或放大增益）。 因此，考虑到每个光源的足够的动态范围，可以提供检测到的光束功率，从而实现有效的APC。