公开(公告)号：US06819645B2

公开(公告)日：2004-11-16

申请号：US09854902

申请日：2001-05-15

Applicant: Jin-hoon Jeon ,  Jung-wan Ko ,  Tatsuhiro Otsuka

Inventor： Jin-hoon Jeon ,  Jung-wan Ko ,  Tatsuhiro Otsuka

IPC: G11B700

CPC classification number: G11B27/3027 ,  G11B7/00745 ,  G11B20/10009 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/2575

Abstract: A recording medium with a wobble-modulated track, and a method of and an apparatus for detecting a header region of the same. The recording medium includes a wobbled track on which a wobble signal is recorded, a header region on which header information is recorded, and a wobble-modulated track on which a wobble modulation signal obtained by modulating the wobble signal is recorded. Accordingly, the header region is reliably detected, and the reliability of header information read is increased.

Abstract translation: 具有摆动调制轨道的记录介质，以及用于检测其标题区域的方法和装置。 记录介质包括其上记录有摆动信号的摆动轨道，记录标题信息的标题区域和记录通过调制摆动信号获得的摆动调制信号的摆动调制轨道。 因此，可靠地检测标题区域，并且增加了读取头标信息的可靠性。

公开(公告)号：US06687201B2

公开(公告)日：2004-02-03

申请号：US09846264

申请日：2001-05-02

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

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

IPC: G11B700

CPC classification number: G11B7/1353 ,  G11B7/00718 ,  G11B7/08505 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/13922 ,  G11B7/1398

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06967918B2

公开(公告)日：2005-11-22

申请号：US09984887

申请日：2001-10-31

Applicant: Kyung-geun Lee ,  In-sik Park ,  Jung-wan Ko ,  Tae-kyung Kim ,  Jin-hoon Jeon ,  Tatsuhiro Otsuka ,  Du-seop Yoon

Inventor： Kyung-geun Lee ,  In-sik Park ,  Jung-wan Ko ,  Tae-kyung Kim ,  Jin-hoon Jeon ,  Tatsuhiro Otsuka ,  Du-seop Yoon

IPC: G11B7/24 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

CPC classification number: G11B27/3027 ,  G11B7/00454 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/126 ,  G11B7/128 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/2575

Abstract: An optical recording medium with a wobbled header area and a data recording method and an apparatus therefore. The optical recording medium includes a wobbled track to which a wobble signal is recorded, and a wobbled header track to which a wobble header signal comprising header information and predetermined header marks are recorded. Accordingly, the physical geometry of a header area is uniform so that a decrease in the quantity of light reflected is prevented when data is recorded to the optical recording medium.

Abstract translation: 因此，具有摆动的标题区域和数据记录方法的光学记录介质和装置。 光记录介质包括摆动信号被记录的摆动轨迹，以及一个摆动的标题轨道，其中记录了包括报头信息和预定报头标记的摆动报头信号。 因此，头部区域的物理几何形状是均匀的，从而当将数据记录到光学记录介质时防止反射光量的减少。

公开(公告)号：US06801486B2

公开(公告)日：2004-10-05

申请号：US09993911

申请日：2001-11-27

Applicant: Byung-in Ma ,  In-sik Park ,  Tae-yong Doh ,  Jin-hoon Jeon ,  Byoung-ho Choi

Inventor： Byung-in Ma ,  In-sik Park ,  Tae-yong Doh ,  Jin-hoon Jeon ,  Byoung-ho Choi

IPC: G11B700

CPC classification number: G11B7/131 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956

Abstract: At least part of a light beam reflected from an optical disc is divided into first through fourth light areas in directions corresponding to the radial and tangential directions of the disc, and first through fourth detection signals are output from the light areas. The first through fourth light areas are ordered counterclockwise or clockwise. A phase difference is obtained between a first sum signal obtained by summing the first and third detection signals and a second sum signal obtained by summing the second and fourth detection signals and first and second phase difference signals are output based upon the phase difference. The phase difference signals are summed to generate an optical recording/reproducing system monitoring signal for system adjustment even for high density optical discs, the monitoring signal being proportional to the degrees of a radial tilt, tangential tilt, a defocus, or a detrack.

Abstract translation: 从光盘反射的光束的至少一部分在与盘的径向和切线方向对应的方向上被划分为第一至第四光区域，并且从光区域输出第一至第四检测信号。 第一至第四个光区按逆时针或顺时针方向排列。 在通过对第一和第三检测信号进行求和获得的第一和信号和通过对第二和第四检测信号求和获得的第二和信号之间获得相位差，并且基于相位差输出第一和第二相位差信号。 相位差信号被相加以生成用于系统调整的光学记录/再现系统监视信号，即使对于高密度光盘，监视信号与径向倾斜度，切向倾斜度，散焦或脱轨成正比。

公开(公告)号：US06754146B2

公开(公告)日：2004-06-22

申请号：US09986454

申请日：2001-11-08

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

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

IPC: G11B700

CPC classification number: G11B7/131 ,  G11B7/0956

Abstract: An error signal detection apparatus for an optical recording/reproducing system including a light source emitting a light beam and an objective lens focusing the light beam to form a light spot on a recording medium, the apparatus including: a photodetecting unit dividing at least a part of the light beam passed through the objective lens after being reflected/diffracted from an information stream of the recording medium into light beam portions, and detecting the light beam portions; and a signal processor detecting phase differences between detection signals from the light beam portions to detect a tangential error signal, a defocus error signal, and/or a radial tilt error signal.

Abstract translation: 一种用于光学记录/再现系统的误差信号检测装置，包括发射光束的光源和聚焦光束以在记录介质上形成光点的物镜，该装置包括：光电检测单元，将至少一部分 在从记录介质的信息流反射/衍射之后通过物镜的光束变成光束部分，并且检测光束部分; 以及信号处理器，检测来自光束部分的检测信号之间的相位差，以检测切向误差信号，散焦误差信号和/或径向倾斜误差信号。

公开(公告)号：US07095686B2

公开(公告)日：2006-08-22

申请号：US10839353

申请日：2004-05-06

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

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

IPC: G11B7/00

CPC classification number: G11B7/131 ,  G11B7/0956

Abstract: An error signal detection apparatus for an optical recording/reproducing system including a light source emitting a light beam and an objective lens focusing the light beam to form a light spot on a recording medium, the apparatus including: a photodetecting unit dividing at least a part of the light beam passed through the objective lens after being reflected/diffracted from an information stream of the recording medium into light beam portions, and detecting the light beam portions; and a signal processor detecting phase differences between detection signals from the light beam portions to detect a tangential error signal, a defocus error signal, and/or a radial tilt error signal.

Abstract translation: 一种用于光学记录/再现系统的误差信号检测装置，包括发射光束的光源和聚焦光束以在记录介质上形成光点的物镜，该装置包括：光电检测单元，将至少一部分 在从记录介质的信息流反射/衍射之后通过物镜的光束变成光束部分，并且检测光束部分; 以及信号处理器，检测来自光束部分的检测信号之间的相位差，以检测切向误差信号，散焦误差信号和/或径向倾斜误差信号。

公开(公告)号：US06977876B2

公开(公告)日：2005-12-20

申请号：US09895878

申请日：2001-07-02

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

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

IPC: G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/13 ,  G11B7/00

CPC classification number: G11B7/131 ,  G11B7/00718 ,  G11B7/08505 ,  G11B7/0901 ,  G11B7/0943

Abstract: An apparatus for and a method of detecting a defocus error signal. First, second and third light receiving regions of a photodetector are arranged in a radial direction of a recording medium to independently perform photoelectric conversion with respect to incident light which is reflected/diffracted by the recording medium. A subtractor subtracts a sum signal of detection signals from the first and third light receiving regions and a detection signal of the second light receiving region to output a defocus error signal, to detect defocus and/or a change in thickness of the recording medium. The defocus error signal and a push-pull tracking error signal are compared in a state in which a predetermined amount of defocus is applied to a light spot to detect a seek direction of the recording medium having a land/groove structure.

Abstract translation: 一种用于检测散焦误差信号的装置和方法。 首先，光电检测器的第二和第三光接收区域沿记录介质的径向布置，以独立地对由记录介质反射/衍射的入射光进行光电转换。 减法器从第一和第三光接收区域和第二光接收区域的检测信号中减去检测信号的和信号，以输出散焦误差信号，以检测记录介质的散焦和/或厚度变化。 在将预定量的散焦加到光点以检测具有岸台/槽结构的记录介质的寻道方向的状态下，比较散焦误差信号和推挽跟踪误差信号。

公开(公告)号：US06813227B2

公开(公告)日：2004-11-02

申请号：US09938304

申请日：2001-08-24

Applicant: Seong-il Cho ,  Joong-eon Seo ,  Jin-hoon Jeon ,  Soo-yul Jung

Inventor： Seong-il Cho ,  Joong-eon Seo ,  Jin-hoon Jeon ,  Soo-yul Jung

IPC: G11B700

CPC classification number: G11B7/0953

Abstract: A disturbance compensation module using learning control generates a control input to compensate for track position errors due to a periodic disturbance occurring in an optical recording medium in an optical recording medium drive servo system of an optical recording/reproducing apparatus. The module includes a first filter to filter the track position errors and a memory to store control inputs to compensate for a track control cycle in a corresponding address. A second filter filters the control inputs stored in the memory. An adder adds the filtered track position errors from the first filter to the filtered control inputs from the second filter and outputs a result to the memory, updating the control inputs to compensate for the track position errors.

Abstract translation: 使用学习控制的扰动补偿模块生成控制输入，以补偿光记录/再现装置的光记录介质驱动伺服系统中的光记录介质中发生的周期性干扰的轨道位置误差。 该模块包括用于滤波轨道位置误差的第一滤波器和用于存储控制输入以补偿相应地址中的轨道控制周期的存储器。 第二个滤波器过滤存储在存储器中的控制输入。 加法器将来自第一滤波器的经滤波的轨道位置误差与来自第二滤波器的经滤波的控制输入相加，并将结果输出到存储器，更新控制输入以补偿轨道位置误差。