公开(公告)号：US06985293B2

公开(公告)日：2006-01-10

申请号：US10458321

申请日：2003-06-11

Applicant: Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

Inventor： Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

IPC: G02B5/18

CPC classification number: G11B7/1374 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/0944 ,  G11B7/127 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an objective lens having a focal length of an information recording surface in the DVD, an optical path control unit controls the light beams so that the light beam emitted from one of the laser light sources is directed to the objective lens and the light output from the objective lens is directed to the optical detection unit, and a phase shift unit between the optical path control unit and the objective lens and which shifts a phase of the second light to reduce the size of a beam spot which is formed the information recording surface in the CD-R.

Abstract translation: 具有激光光源的光学拾取装置发射具有相对较短波长的第一光束和用于CD-R的具有较长波长的第二光束，具有信息记录表面的焦距的物镜 DVD，光路控制单元控制光束，使得从一个激光源发射的光束被引导到物镜，并且从物镜输出的光被引导到光学检测单元，并且相移 光路控制单元和物镜之间的单位，并且移动第二光的相位以减小形成在CD-R中的信息记录表面的束斑的尺寸。

公开(公告)号：US20050169129A1

公开(公告)日：2005-08-04

申请号：US11095481

申请日：2005-04-01

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

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

IPC: G11B7/24 ,  G11B7/00 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B20/12 ,  G11B21/10

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。

公开(公告)号：US06816449B2

公开(公告)日：2004-11-09

申请号：US09930963

申请日：2001-08-17

Applicant: Jang-Hoon Yoo ,  Chul-Woo Lee

Inventor： Jang-Hoon Yoo ,  Chul-Woo Lee

IPC: G11B700

CPC classification number: G11B7/1353 ,  G02B5/32 ,  G11B7/1275 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, a holographic lens including a holographic ring to transmit the light beams incident in an inner region of the holographic ring, and to diffract a specific light beam among the light beams emitted from the laser light sources incident in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media to corresponding photodetectors.

Abstract translation: 一种与至少两种类型的光学记录介质兼容的光学拾取装置，使用具有各自不同波长的光束来记录和读取信息，所述光学拾取装置包括两个激光源，以发射具有不同波长的光束;全息透镜，包括 用于透射入射在全息环的内部区域中的光束的全息环，并且从入射在相对于内部区域的外部区域的激光光源发射的光束中衍射特定光束，将物镜衍射到 将通过全息环透镜的光束聚焦在两种类型的光学记录介质，光学元件的相应信息记录表面上，以将从光学记录介质的信息记录表面反射的光束的光路改变为相应的光电检测器 。

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：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：US06400666B1

公开(公告)日：2002-06-04

申请号：US09635520

申请日：2000-08-09

Applicant: Jang-hoon Yoo ,  Kun-ho Cho ,  Yong-hoon Lee ,  Seok-jung Kim ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo

Inventor： Jang-hoon Yoo ,  Kun-ho Cho ,  Yong-hoon Lee ,  Seok-jung Kim ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo

IPC: G11B7095

CPC classification number: G11B7/1353 ,  G11B7/0956

Abstract: An optical pickup device includes a light source for generating and emitting light, optical path changing means for changing a proceeding path of incident light, an objective lens for focusing incident light on a recording medium which has a recording surface where information is recorded and a protection layer, at the side where light is input, for protecting the recording surface, a main photodetector for detecting the information signal and/or an error signal by receiving the light reflected by the recording surface of the recording medium and passing through the objective lens and the optical path changing means, and an inclination detecting unit for detecting inclination of the recording medium by receiving the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium. Thus, since the inclination of the recording medium is detected using the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium, without an additional tilt sensor, the number of parts is reduced and the structure of the device is simplified.

Abstract translation: 一种光拾取装置，包括用于产生和发光的光源，用于改变入射光的行进路径的光路改变装置，用于将入射光聚焦在具有记录信息的记录表面的记录介质上的物镜和保护 层，在输入光的一侧用于保护记录表面;主光电检测器，用于通过接收由记录介质的记录表面反射并穿过物镜的光检测信息信号和/或误差信号;以及 光路改变装置和倾斜检测单元，用于通过接收从光源发射并被保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度。 因此，由于使用从光源发出并由保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度，所以没有附加的倾斜传感器，部件的数量减少，并且 简化了设备的结构。

公开(公告)号：US06396638B1

公开(公告)日：2002-05-28

申请号：US09607928

申请日：2000-06-30

Applicant: Jang-hoon Yoo ,  Kun-ho Cho ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo ,  Dong-ho Shin

Inventor： Jang-hoon Yoo ,  Kun-ho Cho ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo ,  Dong-ho Shin

IPC: G02B2714

CPC classification number: B82Y10/00 ,  G11B7/08564 ,  G11B7/1356 ,  G11B7/139 ,  G11B11/10543 ,  G11B11/10576 ,  G11B2007/13725

Abstract: An optical pickup device includes a light source for generating light, a light path changing means for changing the traveling path of incident light, an objective lens for focusing incident light to form a light spot on a recording medium and having an incidence region of a predetermined size, a tracking mirror disposed on the light path between the light path changing means and the objective lens, for reflecting incident light emitted from the light source so that the light spot traces proper track positions of the recording medium, a lens unit consisting of at least two lenses which allow the light reflected from the tracking mirror to be incident on the incidence region of the objective lens, and a photo detecting unit for receiving light reflected from the recording medium and having passed through the objective lens and the light path changing means. Since the optical pickup device performs tracking by adjusting the reflection direction of incident light by means of a tracking mirror with an objective lens fixed, a tracking error signal offset due to movement of the objective lens is not generated, thereby enabling stable tracking.

Abstract translation: 一种光拾取装置，包括用于产生光的光源，用于改变入射光的行进路径的光路改变装置，用于聚焦入射光以在记录介质上形成光点并具有预定的入射区域的入射区域的物镜 尺寸，设置在光路改变装置和物镜之间的光路上的跟踪镜，用于反射从光源发射的入射光，使得光斑跟踪记录介质的正确轨道位置，由...组成的透镜单元 允许从跟踪反射镜反射的光入射到物镜的入射区域的至少两个透镜，以及用于接收从记录介质反射并且已经通过物镜并且通过光路改变装置的光的光检测单元 。 由于光学拾取装置通过利用物镜固定的跟踪反射镜调节入射光的反射方向进行跟踪，所以不会产生由于物镜的移动导致的跟踪误差信号偏移，从而能够进行稳定的跟踪。

公开(公告)号：US06304540B1

公开(公告)日：2001-10-16

申请号：US09419792

申请日：1999-10-18

Applicant: Jang-Hoon Yoo ,  Chul-Hoo Lee

Inventor： Jang-Hoon Yoo ,  Chul-Hoo Lee

IPC: G11B712

CPC classification number: G11B7/1353 ,  G02B5/32 ,  G11B7/1275 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, respectively, a holographic lens, including a holographic ring, to transmittal of the light beams emitted from the laser light sources in an inner region of the holographic ring, and diffracting a specific light beam among the light beams emitted from the laser light sources in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media; and two photodetectors to individually detect optical information from the light beams incident from the optical elements. The optical pickup apparatus is used compatibly with optical recording media by using the holographic lens to eliminate spherical aberration generated when an optical recording medium is changed to another medium having a different thickness, thereby providing advantages which include ease in construction of the holographic lens and good mass-production capabilities.

Abstract translation: 一种与至少两种类型的光学记录介质兼容的光学拾取装置，使用具有不同波长的光束来记录和读取信息，所述光学拾取装置包括两个激光源，分别发射具有不同波长的光束，全息图 透镜，包括全息环，以在全息环的内部区域中传输从激光源发出的光束，并且在相对于外部区域的外部区域中从激光源发射的光束中衍射特定光束 内部区域，用于将通过全息环透镜的光束聚焦在两种类型的光学记录介质的各个信息记录表面上的物镜，用于改变从信息记录表面反射的光束的光路的光学元件 的光学记录介质; 以及两个光电检测器，用于单独地检测从光学元件入射的光束的光学信息。 光学拾取装置通过使用全息透镜与光学记录介质兼容地使用，以消除当光学记录介质变为具有不同厚度的另一种介质时产生的球面像差，从而提供了包括易于构造全息透镜的优点 批量生产能力。

公开(公告)号：US06275461B1

公开(公告)日：2001-08-14

申请号：US09538976

申请日：2000-03-31

Applicant: Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

Inventor： Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

IPC: G11B712

CPC classification number: G11B7/127 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006

Abstract: A recording/reproducing apparatus includes an optical pickup device having an optical phase plate which is compatible with optical recording mediums having different thicknesses, and an optical signal processing device processes information read from the optical recording mediums and processes information to be recorded thereon using the optical pickup device.

Abstract translation: 记录/再现装置包括具有光学相位差的光学拾取装置，其与具有不同厚度的光学记录介质兼容，并且光学信号处理装置处理从光学记录介质读取的信息并使用光学处理信息记录在其上 拾取装置。

公开(公告)号：US06233217B1

公开(公告)日：2001-05-15

申请号：US09087861

申请日：1998-06-01

Applicant: Jang-hoon Yoo ,  Chul-woo Lee ,  Kun-ho Cho

Inventor： Jang-hoon Yoo ,  Chul-woo Lee ,  Kun-ho Cho

IPC: G11B700

CPC classification number: G11B7/1384 ,  G11B7/127

Abstract: An optical pickup for recording/reproduction. The optical pickup includes a light source unit including a light emitting diode (LED) to emit light and a waveguide to condense the light emitted from the LED; a collimating lens to collimate the light emitted from the waveguide; an objective lens to condense the light passed through the collimating lens to form a light spot on the recording surface of a recording medium; a light path changing unit arranged on an optical path between the collimating lens and the objective lens, to change a traveling path of the incident light; and a photodetector to receive the light incident via the objective lens and the light path changing unit after being reflected from the recording medium.

Abstract translation: 用于记录/再现的光学拾取器。 光拾取器包括：光源单元，其包括发光的发光二极管（LED）和用于冷凝从LED发射的光的波导; 准直透镜，用于准直从波导发射的光; 物镜，用于冷凝通过准直透镜的光，以在记录介质的记录表面上形成光斑; 布置在准直透镜和物镜之间的光路上的光路改变单元，以改变入射光的行进路径; 以及光电检测器，用于在从记录介质反射之后接收经由物镜和光路改变单元入射的光。