公开(公告)号：US07304915B2

公开(公告)日：2007-12-04

申请号：US10746290

申请日：2003-12-29

Applicant: Byung-In Ma ,  Kwan-Joon Kim ,  Seok-Jung Kim ,  Shi-yang Ryu

Inventor： Byung-In Ma ,  Kwan-Joon Kim ,  Seok-Jung Kim ,  Shi-yang Ryu

IPC: G11B5/58 ,  G11B7/00

CPC classification number: G11B7/0956 ,  G11B7/0935 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927

Abstract: An actuator of an optical disk system and an apparatus producing a signal for driving the actuator, the actuator including a light source, with which information is recorded on or reproduced from an optical disk surface. In the actuator, an inner focusing coil and an outer focusing coil are installed near an inner boundary and an outer boundary, respectively, of the optical disk surface. A first signal wire is connected to a first port of the inner focusing coil and transmits an inner coil signal. A second signal wire is connected to a first port of the outer focusing coil and transmits an outer coil signal. A common signal wire is connected to a second port of the inner focusing coil and a second port of the outer focusing coil and transmits a common reference signal. Thus, a simple, inexpensive 8-wire actuator can be obtained.

Abstract translation: 光盘系统的致动器和产生用于驱动致动器的信号的装置，致动器包括光源，信息被记录在光盘表面上或从光盘表面再现。 在致动器中，内聚焦线圈和外聚焦线圈分别安装在光盘表面的内边界和外边界附近。 第一信号线连接到内聚焦线圈的第一端口，并传输内线圈信号。 第二信号线连接到外聚焦线圈的第一端口并且传输外线圈信号。 公共信号线连接到内部聚焦线圈的第二端口和外部聚焦线圈的第二端口并且发送公共参考信号。 因此，可以获得简单，便宜的8线致动器。

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：US07184373B2

公开(公告)日：2007-02-27

申请号：US10677147

申请日：2003-10-02

Applicant: Dmytro Kelbas ,  Byung-in Ma

Inventor： Dmytro Kelbas ,  Byung-in Ma

IPC: G11B7/00

CPC classification number: G11B7/08511 ,  G11B7/0945

Abstract: An adaptive focusing apparatus and method thereof of an optical disc drive having a focus servo controller moves a pickup head to an optimal focus point. A disc driver rotates an optical disc and includes a reflected signal detector detecting a signal reflected from the optical disc by the pickup head and a signal processor preventing spikes between a surface of the optical disc and the pickup head in response to the reflected signal and generating a focus drive signal for the focus servo controller using an adaptive focus search algorithm. The algorithm includes a static part and a dynamic part to reduce a focus search time. Accordingly, damage to the optical disc due to spikes between the surface of the optical disc and the pickup head can be prevented and a focus search time can be reduced.

Abstract translation: 具有聚焦伺服控制器的光盘驱动器的自适应聚焦装置及其方法将拾取头移动到最佳聚焦点。 光盘驱动器旋转光盘并且包括反射信号检测器，其通过拾取头检测从光盘反射的信号，以及信号处理器，其响应于反射信号防止光盘表面与拾取头之间的尖峰，并产生 使用自适应聚焦搜索算法的聚焦伺服控制器的聚焦驱动信号。 该算法包括静态部分和动态部分，以减少焦点搜索时间。 因此，可以防止由于光盘的表面和拾取头之间的尖峰而导致的光盘的损坏，并且可以减少焦点搜索时间。

公开(公告)号：US07133342B2

公开(公告)日：2006-11-07

申请号：US09727469

申请日：2000-12-04

Applicant: Byoung-ho Choi ,  Byung-in Ma

Inventor： Byoung-ho Choi ,  Byung-in Ma

IPC: G11B3/90

CPC classification number: G11B19/128 ,  G11B7/08505 ,  G11B7/0901 ,  G11B7/0945 ,  G11B2007/0006

Abstract: An optical recording/reproducing apparatus and method to determine a type of disk including a photodetector divided into at least two light receiving sections in a radial direction. A radial subtractor generates a radial push-pull signal from a difference between light receiving signals from a disk and received by the at least two light receiving sections, where the disk includes one of a first disk and a second disk. An upper envelope detector detects an upper envelope signal from the radial push-pull signal and a lower envelope detector detects a lower envelope signal from the radial push-pull signal. A phase comparator detects a phase difference between the upper envelope signal and the lower envelope signal. A type of disk determiner distinguishes the first disk from the second disk according to a magnitude of the phase difference and outputting a signal indicative thereof, where the second disk includes a density higher than the first disk. A servo error generator and servo controller receives the magnitude of the phase difference and the light receiving signals and outputting servo error signals. A servo driver amplifier receives the servo error signals to output a voltage to drive a spindle motor of the disk. Furthermore, a first track cross signal generator generates a first track cross signal from an envelope of an RF SUM signal, wherein the RF SUM signal is obtained by adding the light receiving signals. A second track cross signal generator generates a second track cross signal from an envelope of the radial push-pull signal. A switch selectively outputs one of the first track cross signal and the second track cross signal according to the output signal from the type of disk determiner.

Abstract translation: 一种光学记录/再现装置和方法，用于确定包括沿径向分成至少两个光接收部分的光电探测器的光盘类型。 径向减法器从来自盘的光接收信号之间的差产生径向推挽信号，并由至少两个光接收部接收，其中盘包括第一盘和第二盘中的一个。 上包络检测器检测来自径向推挽信号的上包络信号，下包络检测器从径向推挽信号检测下包络信号。 相位比较器检测上包络信号和下包络信号之间的相位差。 一种磁盘确定器根据相位差的大小区分第一磁盘与第二磁盘，并输出指示其的信号，其中第二磁盘包括高于第一磁盘的密度。 伺服误差发生器和伺服控制器接收相位差和光接收信号的大小并输出伺服误差信号。 伺服驱动器放大器接收伺服误差信号以输出电压以驱动盘的主轴电机。 此外，第一轨道交叉信号发生器从RF SUM信号的包络产生第一轨道交叉信号，其中通过添加光接收信号来获得RF SUM信号。 第二轨道交叉信号发生器从径向推挽信号的包络产生第二轨道交叉信号。 开关根据来自盘式确定器的类型的输出信号选择性地输出第一轨道交叉信号和第二轨道交叉信号中的一个。

公开(公告)号：US06940799B1

公开(公告)日：2005-09-06

申请号：US09691059

申请日：2000-10-19

Applicant: Byung-in Ma ,  Byoung-ho Choi ,  Tae-youn Lee

Inventor： Byung-in Ma ,  Byoung-ho Choi ,  Tae-youn Lee

IPC: G11B7/085 ,  G11B7/09 ,  G11B7/13 ,  G11B3/90

CPC classification number: G11B7/131 ,  G11B7/08505 ,  G11B7/0906

Abstract: A method and apparatus for detecting the direction of movement of a laser spot in an optical disc recording/reproducing apparatus having a photodetector divided into two or more sections, each of which is a light receiving device, aligned in a radial direction that includes detecting a phase difference between the light receiving signals corresponding to light receiving devices of the photodetector. A first phase difference signal is obtained that indicates the degree to which the phase of the light receiving signal corresponding to a first light receiving device farthest advanced in the radial direction leads the phase of the light receiving signal corresponding to a second light receiving device. A second phase difference signal is obtained that indicates the degree to which the phase of the light receiving signal corresponding to the second light receiving device leads the phase of the light receiving signal corresponding to the first light receiving device. The first and second phase difference signals are integrated and then added to each other to obtain a signal that indicates the direction of movement of the laser spot. The direction of movement of the laser spot is detected according to whether the phase of the direction detecting signal leads or lags the phase of a tracking error signal.

Abstract translation: 一种用于检测光盘记录/再现装置中的激光光斑的移动方向的方法和装置，该光盘记录/再现装置具有被分成两个或更多个部分的光电检测器，每个部分是沿径向排列的光接收装置，包括检测 对应于光检测器的光接收装置的光接收信号之间的相位差。 获得第一相位差信号，其指示对应于在径向方向上最远的先行的第一光接收装置的光接收信号的相位导致对应于第二光接收装置的光接收信号的相位的程度。 获得第二相位差信号，其指示对应于第二光接收装置的光接收信号的相位导致与第一光接收装置相对应的光接收信号的相位的程度。 第一和第二相位差信号被积分，然后彼此相加以获得指示激光光斑的移动方向的信号。 根据方向检测信号的相位是否导通或滞后于跟踪误差信号的相位来检测激光光斑的移动方向。

公开(公告)号：US06721243B2

公开(公告)日：2004-04-13

申请号：US10378904

申请日：2003-03-05

Applicant: Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

Inventor： 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: G11B700

CPC classification number: G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0941 ,  G11B7/0956

Abstract: A method of detecting a servo error, an apparatus therefor, a disk which maintains quantity of a servo error signal, a method of controlling a servo of an apparatus for recording data on and reproducing data from a disk, a method of detecting the tracking error, and a method of detecting tilt error of the apparatus. The apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, each sector has a header for indicating an address, each header has a first header and a second header which are recorded to deviate from the center of the track in opposite directions, and the first header and the second header have address areas in which the addresses of sectors are recorded and synchronous signal areas in which synchronous signals for detecting the address signals recorded in the address area are recorded. As a result, it is possible for the recording/reproducing apparatus to stably control a servo therein and maintain an optimal recording/reproducing state since the apparatus for detecting the servo error correctly detects the servo error state of the disk.

Abstract translation: 一种检测伺服误差的方法，其装置，保持伺服误差信号量的盘，控制用于从盘记录数据和从盘再现数据的装置的伺服的方法，检测跟踪误差的方法 以及检测装置的倾斜误差的方法。 用于在盘中记录数据并从其再现数据的装置，其中记录区被划分为扇区，每个扇区具有用于指示地址的标题，每个标题具有被记录为偏离中心的第一标题和第二标题 并且第一标题和第二标题具有其中记录了扇区的地址的地址区域和记录了用于检测记录在地址区域中的地址信号的同步信号的同步信号区域。 结果，由于用于检测伺服误差的装置正确地检测到盘的伺服错误状态，所以记录/再现装置可以稳定地控制其中的伺服并保持最佳的记录/再现状态。

公开(公告)号：US06611482B2

公开(公告)日：2003-08-26

申请号：US09812714

申请日：2001-03-22

Applicant: Byung-in Ma ,  Chong-sam Chung ,  In-sik Park ,  Byoung-ho Choi ,  Tae-yong Doh

Inventor： Byung-in Ma ,  Chong-sam Chung ,  In-sik Park ,  Byoung-ho Choi ,  Tae-yong Doh

IPC: G11B700

CPC classification number: G11B7/131 ,  G11B7/00718 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0956

Abstract: An error signal detecting apparatus for an optical recording/reproducing apparatus, the error signal detecting apparatus including a photodetector to receive light reflected and diffracted by a recording medium, and a signal processor to detect an error signal by calculating a detection signal of the photodetector. The photodetector includes a plurality of light receiving areas to independently receive light of a light area in which the profile of the light changes to the opposite profile according to the tangential tilt of the recording medium. The signal processor detects a tangential tilt error signal from detection signals of the light receiving areas. Thus, a signal output from the error signal detecting apparatus does not change when a shift is generated in the objective lens or the distance between the objective lens and the disc is deviated from the on-focus position. Also, a change in the profile of the light beam according to a relative tangential tilt with respect to the objective lens of a recording medium in land/groove format can be properly detected so that an accurate tangential tilt error signal can be detected.

Abstract translation: 一种用于光学记录/再现装置的误差信号检测装置，所述误差信号检测装置包括用于接收由记录介质反射和衍射的光的光电检测器，以及通过计算所述光电检测器的检测信号来检测误差信号的信号处理器。 光电检测器包括多个光接收区域，以独立地接收光区域的光，其中光的轮廓根据记录介质的切线倾斜而改变到相反的轮廓。 信号处理器从光接收区域的检测信号检测切向倾斜误差信号。 因此，当在物镜中产生偏移或物镜与盘之间的距离偏离对焦位置时，从误差信号检测装置输出的信号不改变。 此外，可以适当地检测根据相对于陆地/凹槽格式的记录介质的物镜的相对切向倾斜的光束轮廓的变化，从而可以检测出精确的切向倾斜误差信号。

公开(公告)号：US06469979B1

公开(公告)日：2002-10-22

申请号：US09385415

申请日：1999-08-30

Applicant: Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

Inventor： 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: G11B700

CPC classification number: G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0941 ,  G11B7/0956

Abstract: A method of detecting a servo error, an apparatus therefor, a disk which maintains quantity of a servo error signal, a method of controlling a servo of an apparatus for recording data on and reproducing data from a disk, a method of detecting the tracking error, and a method of detecting tilt error of the apparatus. The apparatus for recording data on and reproducing data from the disk in which a recording area is divided into sectors, each sector has a header for indicating an address, each header has a first header and a second header which are recorded to deviate from the center of the track in opposite directions, and the first header and the second header have address areas in which the addresses of sectors are recorded and synchronous signal areas in which synchronous signals for detecting the address signals recorded in the address area are recorded, 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 received from the reproducing signal generator, a first synchronous signal level detector for receiving the output of the reproducing signal generator and detecting a magnitude Ivfo1 of a first synchronous signal in the first header by being synchronized with the header area signal received from the header area detector, a second synchronous signal level detector for receiving the output of the reproducing signal generator and detecting a magnitude Ivfo3 of a second synchronous signal in the second header by being synchronized with the header area signal received from the header area detector, and a balance calculator for calculating the balance of the magnitude Ivfo1 of the first synchronous signal detected by the first synchronous signal level detector and the magnitude Ivfo3 of the second synchronous signal detected by the second synchronous signal level detector. As a result, it is possible for the recording/reproducing apparatus to stably control a servo therein and maintain an optimal recording/reproducing state since the apparatus for detecting the servo error correctly detects the servo error state of the disk.

公开(公告)号：US06400662B1

公开(公告)日：2002-06-04

申请号：US09660469

申请日：2000-09-12

Applicant: Byoung-ho Choi ,  Jung-wan Ko ,  Byung-in Ma ,  Tae-yong Doh ,  Tae-yeon Lee ,  In-sik Park

Inventor： Byoung-ho Choi ,  Jung-wan Ko ,  Byung-in Ma ,  Tae-yong Doh ,  Tae-yeon Lee ,  In-sik Park

IPC: G11B700

CPC classification number: G11B7/131 ,  G11B7/08517 ,  G11B7/08541

Abstract: An optical recording/reproducing apparatus for determining a direction in which an optical pick-up moves, and detecting a track cross signal. The track cross signal is useful as a basis of determining tracking pull-in after searching a track. In the present track cross signal detecting method, the track cross signal is obtained by binarizing the envelope of an RF signal RF0 obtained by subtracting some light receiving signals generated by some light receiving devices in the radial direction from other light receiving signals generated by other light receiving devices in the radial direction. The light receiving signals originate from a photodetector, divided into two or more sections in the radial direction. The track cross signal detecting method is especially useful for generating the track cross signal when the track pitch is smaller than the size of an optical spot, the signal being less affected by crosstalk caused by an adjacent track.

Abstract translation: 一种光学记录/再现装置，用于确定光学拾取器移动的方向，并且检测轨迹交叉信号。 轨道交叉信号作为在搜索轨道之后确定跟踪拉入的基础是有用的。 在本轨道交叉信号检测方法中，轨道交叉信号是通过将通过从其他光产生的其他光接收信号中减去由一些光接收装置产生的一些光接收信号而获得的RF信号RF0的包络线二值化获得的， 沿径向接收装置。 光接收信号源于光电检测器，在径向上分成两个或更多个部分。 当轨道间距小于光点的大小时，轨道交叉信号检测方法对于产生轨道交叉信号特别有用，该信号较少受到由相邻轨道引起的串扰的影响。

公开(公告)号：US07319643B2

公开(公告)日：2008-01-15

申请号：US11304636

申请日：2005-12-16

Applicant: Seong-sin Joo ,  In-sik Park ,  Byung-in Ma ,  Chong-sam Chung ,  Jang-hoon Yoo ,  Jung-wan Ko ,  Kyung-geun Lee ,  Joong-eon Seo

Inventor： 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: G11B7/00

CPC classification number: G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/0941 ,  G11B7/0956

Abstract: 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.

Abstract translation: 一种用于在盘中将数据记录在数据上并将数据从记录区域划分成扇区的装置，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标题区检测器，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;以及平衡计算器，用于计算 幅度Ivfo 1和幅度Ivfo 3的平衡。