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：US6111843A

公开(公告)日：2000-08-29

申请号：US474132

申请日：1999-12-29

Applicant: Byung-In Ma

Inventor： Byung-In Ma

IPC: G11B20/10 ,  G11B7/00 ,  G11B7/085

CPC classification number: G11B7/08541

Abstract: A track zero cross signal generation apparatus for use in an optical disk system receives a tracking error signal acquired when traversing tracks on a recording medium and generates a track zero cross signal. The track zero cross signal generation apparatus includes a booster which receives the tracking error signal, low-pass-filters the received tracking error signal, and amplifies the low-pass-filtered tracking error signal having a predetermined high frequency band in a pass band for low-pass-filtering. The booster outputs the low-pass-filtered tracking error signal whose signal level in a predetermined high frequency band is amplified, to a comparator. The comparator receives the output of the booster, compares the received signal with predetermined reference voltage levels, and generates a track zero cross signal having different pulse levels when the voltage level of the received signal is larger than a predetermined first reference voltage level or when the voltage level of the received signal is smaller than a predetermined second reference voltage level. Also, the apparatus further includes a center level corrector which corrects the center level of the signal output from the booster into a zero level involved with the predetermined reference voltage levels and outputs the corrected result. The track zero cross signal generation apparatus prevents missing of the track zero cross signal in a predetermined high frequency band when an optical pickup traverses tracks on the recording medium, to thereby enable an optical pickup to accurately and quickly gain access to a target track.

Abstract translation: 用于光盘系统的磁道零交叉信号产生装置接收在记录介质上遍历磁道时获取的跟踪误差信号，并产生磁道零交叉信号。 轨道零交叉信号发生装置包括一个接收跟踪误差信号的升压器，对接收到的跟踪误差信号进行低通滤波，并且在通带中放大具有预定高频带的低通滤波跟踪误差信号， 低通滤波。 升压器将其预定高频带中的信号电平被放大的低通滤波跟踪误差信号输出到比较器。 比较器接收升压器的输出，将接收到的信号与预定的参考电压电平进行比较，并且当接收信号的电压电平大于预定的第一参考电压电平时，或产生具有不同脉冲电平的磁道零交叉信号 接收信号的电压电平小于规定的第二基准电压电平。 此外，该装置还包括中心电平校正器，其将从升压器输出的信号的中心电平校正为与预定参考电压电平相关的零电平，并输出校正结果。 当光学拾取器穿过记录介质上的轨道时，轨道零交叉信号发生装置防止在预定高频带中的轨道零交叉信号的丢失，从而使得光学拾取器能够准确且快速地获得对目标轨道的访问。

公开(公告)号：US6067280A

公开(公告)日：2000-05-23

申请号：US969339

申请日：1997-11-28

Applicant: Byung-In Ma

Inventor： Byung-In Ma

IPC: G11B20/10 ,  G11B7/00 ,  G11B7/085

CPC classification number: G11B7/08541

Abstract: A track zero cross signal generation apparatus for use in an optical disk system receives a tracking error signal acquired when traversing tracks on a recording medium and generates a track zero cross signal. The track zero cross signal generation apparatus includes a booster which receives the tracking error signal, low-pass-filters the received tracking error signal, and amplifies the low-pass-filtered tracking error signal having a predetermined high frequency band in a pass band for low-pass-filtering. The booster outputs the low-pass-filtered tracking error signal whose signal level in a predetermined high frequency band is amplified, to a comparator. The comparator receives the output of the booster, compares the received signal with predetermined reference voltage levels, and generates a track zero cross signal having different pulse levels when the voltage level of the received signal is larger than a predetermined first reference voltage level or when the voltage level of the received signal is smaller than a predetermined second reference voltage level. Also, the apparatus further includes a center level corrector which corrects the center level of the signal output from the booster into a zero level involved with the predetermined reference voltage levels and outputs the corrected result. The track zero cross signal generation apparatus prevents missing of the track zero cross signal in a predetermined high frequency band when an optical pickup traverses tracks on the recording medium, to thereby enable an optical pickup to accurately and quickly gain access to a target track.

公开(公告)号：US20060077840A1

公开(公告)日：2006-04-13

申请号：US11214879

申请日：2005-08-31

Applicant: Byung-In Ma ,  Kwan-Joon Kim

Inventor： Byung-In Ma ,  Kwan-Joon Kim

IPC: G11B7/00

CPC classification number: G11B7/0053 ,  G11B7/0903

Abstract: A disk area type detection method and apparatus, the disk area type detection method including detecting the difference between a side push-pull (SPP) 1 signal and an SPP2 signal; and determining whether an area is a storage medium related information area or a user data area on the disk, based on the detected difference. According to the method and apparatus, the user data area and the storage medium related information area of the disk can be easily distinguished, allowing phase locked loop (PLL) control to be performed appropriately.

Abstract translation: 一种盘区域型检测方法和装置，所述盘区域型检测方法包括检测侧推（SPP）1信号和SPP 2信号之间的差异; 以及基于检测到的差异来确定区域是否是盘上的存储介质相关信息区域或用户数据区域。 根据该方法和装置，可以容易地区分盘的用户数据区域和存储介质相关信息区域，从而适当地执行锁相环（PLL）控制。

公开(公告)号：US6163516A

公开(公告)日：2000-12-19

申请号：US944563

申请日：1997-10-06

Applicant: Byung-In Ma

Inventor： Byung-In Ma

IPC: G11B20/14 ,  G11B7/00 ,  G11B7/005 ,  G11B19/02 ,  G11B20/10 ,  H03L7/06

CPC classification number: G11B20/10481 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10222 ,  H03L7/06 ,  H03L7/0805

Abstract: A disc reproduction apparatus and method to reproduce an optical disc using a constant linear velocity (CLV) method. The disc reproduction apparatus includes an equalizer to receive a signal read from the optical disc and equalizing the received signal according to an equalization control signal, and a wide-capture range phase-locked loop (wide PLL) to perform a phase lock operation with regard to the received equalized signal based on a phase lock control signal. An automatic adjuster selects one of predetermined phase lock control value, according to a type of an optical disc to be used and reproduction velocity determined during initial operation, and a desired target position to read the data from the optical disc, and generates a phase lock control signal having the selected value. A correction unit selects one of a predetermined first equalization control value and a second equalization control value which is generated by the wide PLL and relates to a phase lock operation, according to the desired target position, and generates an equalization control signal having the selected equalization control value. Accordingly, the disc reproduction apparatus optimizes the characteristics of the equalizer, in the case of reproducing data from a compact disc (CD), a digital video disc (DVD), etc., at various reproduction velocities, using a constant linear velocity method and a wide-capture range phase-locked loop.

Abstract translation: 一种使用恒定线速度（CLV）方法再现光盘的盘再现装置和方法。 盘再现装置包括：均衡器，用于接收从光盘读取的信号，并根据均衡控制信号和宽捕获范围锁相环（宽PLL）对接收信号进行均衡，以执行相位锁定操作 基于相位锁定控制信号对所接收到的均衡信号。 自动调节器根据要使用的光盘的类型和在初始操作期间确定的再现速度以及从光盘读取数据的期望目标位置来选择预定的相位锁定控制值中的一个，并且产生锁相 控制信号具有所选择的值。 校正单元选择由宽PLL产生的预定的第一均衡控制值和第二均衡控制值中的一个，并且涉及根据所需目标位置的锁相操作，并产生具有所选均衡的均衡控制信号 控制值。 因此，在使用恒定的线速度法以各种再现速度从光盘（CD），数字视频盘（DVD）等再现数据的情况下，盘再现装置优化均衡器的特性， 宽捕捉范围锁相环。

公开(公告)号：US20060104176A1

公开(公告)日：2006-05-18

申请号：US11246522

申请日：2005-10-11

Applicant: Byung-In Ma ,  Young-sam Lee ,  Kwan-joon Kim

Inventor： Byung-In Ma ,  Young-sam Lee ,  Kwan-joon Kim

IPC: G11B7/00

CPC classification number: G11B19/127 ,  G11B2007/0006

Abstract: A method of determining a type of an optical disc loaded into a data recording and/or reproducing apparatus, which includes a plurality of laser diodes and records data onto and/or reproduces data from diverse types of optical discs, and the data recording and/or reproducing apparatus for implementing the method. The method includes selecting one laser diode from among the plurality of laser diodes, radiating light onto the loaded optical disc while approaching and/or withdrawing the selected laser diode to and from the loaded optical disc, counting a number of reflection signals generated from the light reflected from the loaded optical disc, and determining the type of the loaded optical disc based on the number of reflection signals.

Abstract translation: 一种确定装载到数据记录和/或再现装置中的光盘的类型的方法，其包括多个激光二极管并将数据记录在不同类型的光盘上和/或再现来自不同类型的光盘的数据，以及数据记录和/ 或再现装置。 该方法包括从多个激光二极管中选择一个激光二极管，在接收和/或从所加载的光盘接收和/或取出选定的激光二极管时将光照射到装载的光盘上，对从光产生的多个反射信号进行计数 从加载的光盘反射，并且基于反射信号的数量确定装入的光盘的类型。

公开(公告)号：US06885621B2

公开(公告)日：2005-04-26

申请号：US09844697

申请日：2001-04-30

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

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

IPC: G11B7/095 ,  G11B7/13 ,  G11B7/00

CPC classification number: G11B7/131 ,  G11B7/0956

Abstract: An error signal detection method and apparatus for an optical recording/reproducing system. The error signal detection method includes: (a) detecting light incident through an objective lens after having been reflected and diffracted from a recording medium, as eight light portions arranged in a 2×4 matrix, including four inner light portions, and four outer light portions around the corresponding inner light portions, wherein the rows and columns of the matrix are parallel to the tangential and radial direction of the recording medium, respectively; (b) calculating a first sum signal by summing a detection signal from at least one outer light portion located in a first diagonal direction, and a detection signal from an inner light portion located in a second diagonal direction; (c) calculating second sum signal by summing a detection signal from an inner light portion located in the first diagonal direction, and a detection signal from an outer light portion located in the second diagonal direction; and (d) comparing phases of the first and second sum signals and outputting a phase comparison signal, wherein a tilt error signal is detected from the phase comparison signal. The tilt error signal detected using the method by the error signal detection apparatus has a high signal-to-noise ratio, and is less affected by detracting.

Abstract translation: 一种用于光学记录/再现系统的误差信号检测方法和装置。 误差信号检测方法包括：（a）在从记录介质反射和衍射之后检测通过物镜入射的光，作为布置在2x4矩阵中的八个光部分，包括四个内部光部分和四个外部光部分 相应的内部光线部分，其中矩阵的行和列分别平行于记录介质的切向和径向方向; （b）通过将来自位于第一对角线方向的至少一个外部光部分的检测信号和位于第二对角线方向的内部光部分的检测信号相加来计算第一和信号; （c）通过对来自位于第一对角线方向的内部光部分的检测信号和来自位于第二对角线方向的外部光部分的检测信号求和来计算第二和信号; 以及（d）比较第一和第二和信号的相位并输出相位比较信号，其中从相位比较信号检测倾斜误差信号。 使用误差信号检测装置的方法检测的倾斜误差信号具有高的信噪比，并且受到减小的影响较小。

公开(公告)号：US06222802B1

公开(公告)日：2001-04-24

申请号：US09080403

申请日：1998-05-18

Applicant: Byung-In Ma

Inventor： Byung-In Ma

IPC: G11B700

CPC classification number: G11B7/0941 ,  G11B7/08517 ,  G11B7/08582

Abstract: A device for automatically controlling a sled loop gain in an optical disc drive having a sled motor. The device includes a pickup for irradiating a laser beam onto an optical disc and receiving a reflected beam to read a signal recorded on the optical disc; a tracking error detector to detect an error signal from the read signal; a phase compensator to compensate for a phase deviation of the tracking error signal; a first lowpass filter to control the phase-compensated tracking error signal according to a fixed gain thereof; a controller to cause the pickup to jump N tracks when the laser beam is on-track, and determine the sled loop gain to control a signal output from the first lowpass filter to be changed to a minimum driving voltage upon completion of the track jump; a second lowpass filter to control the signal output from the first lowpass filter according to the sled loop gain generated from the controller; and a sled motor driver to drive the sled motor according to a signal output from the second lowpass filter.

Abstract translation: 一种用于在具有滑动马达的光盘驱动器中自动控制滑环增益的装置。 该装置包括用于将激光束照射到光盘上并接收反射光束以读取记录在光盘上的信号的拾取器; 跟踪误差检测器，用于从读取信号中检测误差信号; 相位补偿器，用于补偿跟踪误差信号的相位偏差; 第一低通滤波器，用于根据其固定增益来控制相位补偿跟踪误差信号; 控制器，当激光束在轨上时使拾音器跳跃N个轨迹，并且确定滑轨环路增益以控制从第一低通滤波器输出的信号，以在轨道跳跃完成时改变为最小驱动电压; 第二低通滤波器，根据从控制器产生的滑环增益来控制从第一低通滤波器输出的信号; 以及滑板马达驱动器，以根据从第二低通滤波器输出的信号来驱动滑动马达。