中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

56 records (took 0.021 seconds)

    Device and method for automatically controlling sled loop gain in optical disc drive
    21.
    发明授权
    Device and method for automatically controlling sled loop gain in optical disc drive 失效
    自动控制光盘驱动器中的滑环增益的装置和方法

    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。

    Method and apparatus for tracking error detection in optical disk driver
    24.
    发明授权
    Method and apparatus for tracking error detection in optical disk driver 有权
    用于跟踪光盘驱动器中的错误检测的方法和装置

    公开(公告)号：US07310291B2

    公开(公告)日：2007-12-18

    申请号：US11044222

    申请日：2005-01-28

    Applicant: Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Jae-seong Shim

    Inventor： Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Jae-seong Shim

    IPC: G11B7/00

    CPC classification number: G11B7/0901

    Abstract: A method and apparatus for tracking error detection in an optical disk reproduction system. The tracking error detecting apparatus generates a tracking error signal as a difference signal of optical detection signals generated by more than two optical detectors positioned along a diagonal line from a track center and includes binarizers which binarize each output of the optical detectors, phase locked loops (PLLs) which generate respective clock signals synchronized with the outputs of each of the binarizers, a phase difference detector which detects a phase difference between the synchronized signals output from the PLLs, and low-pass filters which filter the output of the phase difference detector to output the result as the tracking error signal. The tracking error detecting apparatus generates a tracking error signal which is not dependent on the lengths of pits or marks recorded on an optical disk, enhancing the reliability of the tracking error signal.

    Abstract translation: 一种用于跟踪光盘再现系统中的错误检测的方法和装置。 跟踪误差检测装置产生跟踪误差信号，作为由沿着轨道中心的对角线定位的两个以上的光学检测器产生的光学检测信号的差分信号，并且包括将光学检测器的每个输出二值化的二进制化，锁相环（ PLL），其产生与每个二进制数器的输出同步的相应时钟信号;相位差检测器，其检测从PLL输出的同步信号之间的相位差;以及低通滤波器，其将相位差检测器的输出过滤到 输出结果作为跟踪误差信号。 跟踪误差检测装置产生不依赖于记录在光盘上的凹坑或标记的长度的跟踪误差信号，增强跟踪误差信号的可靠性。

    Physical identification data addressing method using wobble signal, wobble address encoding circuit, method and circuit for detecting wobble address, and recording medium thereof
    25.
    发明授权
    Physical identification data addressing method using wobble signal, wobble address encoding circuit, method and circuit for detecting wobble address, and recording medium thereof 失效
    使用摆动信号的物理识别数据寻址方法，摆动地址编码电路，用于检测摆动地址的方法和电路及其记录介质

    公开(公告)号：US07224651B2

    公开(公告)日：2007-05-29

    申请号：US10947361

    申请日：2004-09-23

    Applicant: Jung-wan Ko ,  In-sik Park ,  Kyung-geun Lee ,  Du-seop Yoon ,  Seong-sin Joo ,  Jae-seong Shim ,  Byoung-ho Choi ,  Byung-in Ma ,  Tatsuhiro Otsuka ,  Yong-jin Ahn

    Inventor： Jung-wan Ko ,  In-sik Park ,  Kyung-geun Lee ,  Du-seop Yoon ,  Seong-sin Joo ,  Jae-seong Shim ,  Byoung-ho Choi ,  Byung-in Ma ,  Tatsuhiro Otsuka ,  Yong-jin Ahn

    IPC: G11B7/00

    CPC classification number: G11B27/24 ,  G11B7/00718 ,  G11B7/24082 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

    Abstract: A physical identification data (PID) addressing method using a wobble signal, a wobble address encoding circuit, a method and circuit for detecting the wobble address and a recording medium therefor. Groove address information indicating physical identification information is phase modulated using a wobble clock signal and recorded in one of the two walls of a groove track, and land address information is phase modulated using a wobble clock signal obtained by shifting the phase of the former wobble clock signal and recorded in the other wall. That is, address information is phase modulated and recorded in each track using the wobbles having a phase difference of 90° between adjacent tracks so that a sum of wobble signals from the adjacent tracks can be a quadrature phase shift keying (QPSK) signal. Therefore, more data can be recorded in the recording medium, and since an interval in which a wobble signal disappears is not caused, recovery of a wobble clock signal can be advantageously performed.

    Abstract translation: 使用摆动信号的物理识别数据（PID）寻址方法，摆动地址编码电路，用于检测摆动地址的方法和电路及其记录介质。 表示物理识别信息的槽地址信息使用摆动时钟信号进行相位调制，并记录在凹槽轨迹的两个壁之一中，并且使用通过使前一个摆动时钟的相位偏移而获得的摆动时钟信号来对陆地地址信息进行相位调制 信号并记录在另一面墙上。 也就是说，使用相邻轨道之间具有90°的相位差的摆动来将地址信息相位调制并记录在每个轨道中，使得来自相邻轨道的摆动信号的和可以是正交相移键控（QPSK）信号。 因此，可以在记录介质中记录更多的数据，并且由于不会产生摆动信号消失的间隔，所以可以有利地进行摆动时钟信号的恢复。

    Apparatus for generating seek direction detecting signal using track error and track cross signals for an optical pickup
    26.
    发明授权
    Apparatus for generating seek direction detecting signal using track error and track cross signals for an optical pickup 有权
    用于使用轨道误差产生寻道方向检测信号并跟踪光学拾取器的交叉信号的装置

    公开(公告)号：US07120095B2

    公开(公告)日：2006-10-10

    申请号：US09815345

    申请日：2001-03-23

    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: G11B7/00

    CPC classification number: G11B7/131 ,  G11B7/00718 ,  G11B7/0903

    Abstract: An apparatus to generate a seek direction detecting signal for an optical pickup to determine a position of a center of an optical spot focused on an optical disk relative to a center of a track, which focuses a main beam on a first optical detector and a sub-beam having a predetermined aberration in a radial direction on a second optical detector using a light dividing unit. The second optical detector has an inner and an outer pair of light receiving portions arranged along the radial direction, the inner pair being between the outer pair. A signal processing portion includes a first signal processing portion to detect a track error signal from signals output from the first optical detector, and a second signal processing portion to generate the seek direction detecting signal from signals detected by the second optical detector and the track error signal.

    Abstract translation: 一种用于产生用于光学拾取器的寻道方向检测信号以确定聚焦在光盘上的相对于轨道中心的光点的中心的位置的装置，其将主光束聚焦在第一光学检测器和子光束上 光束在使用光分离单元的第二光学检测器上具有在径向方向上的预定像差。 第二光学检测器具有沿着径向布置的内部和外部一对光接收部分，内侧对在外侧对之间。 信号处理部分包括：第一信号处理部分，用于从第一光学检测器输出的信号中检测轨道误差信号;以及第二信号处理部分，用于从由第二光学检测器检测的信号和轨道误差产生寻道方向检测信号 信号。

    Differential phase detection device and tracking error signal detection apparatus using the same
    29.
    发明授权
    Differential phase detection device and tracking error signal detection apparatus using the same 失效
    差分相位检测装置和跟踪误差信号检测装置使用相同

    公开(公告)号：US06977982B2

    公开(公告)日：2005-12-20

    申请号：US09986978

    申请日：2001-11-13

    Applicant: Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Sung-ro Go ,  Soo-yul Jung ,  Chang-jin Yang

    Inventor： Byung-in Ma ,  In-sik Park ,  Joong-eon Seo ,  Sung-ro Go ,  Soo-yul Jung ,  Chang-jin Yang

    IPC: G11B7/08 ,  G11B7/09 ,  H04L7/00 ,  G11B7/00

    CPC classification number: G11B7/0906 ,  G11B7/094

    Abstract: A differential phase detection device receives first through fourth detection signals from a photodetector and detects a differential phase signal therefrom, the differential phase detection device includes a slicer slicing and digitizing each of the detection signals with respect to a reference level. A synthesizer synthesizes the digitized detection signals and generates therefrom synthesis signals. A phase difference detector compares phases of the synthesis signals and outputs a first phase difference signal and a second phase difference signal. A matrix circuit processes the first and second phase difference signals to output the differential phase signal.

    Abstract translation: 差分相位检测装置从光电检测器接收第一至第四检测信号，并从其检测差分相位信号，差分相位检测装置包括切片器，对每个检测信号相对于基准电平进行数字化。 合成器合成数字化的检测信号并从中产生合成信号。 相位差检测器对合成信号的相位进行比较，并输出第一相位差信号和第二相位差信号。 矩阵电路处理第一和第二相位差信号以输出差分相位信号。

    Apparatus generating a seek direction detecting signal for an optical pickup using track cross and track error signals
    30.
    发明授权
    Apparatus generating a seek direction detecting signal for an optical pickup using track cross and track error signals 失效
    用于使用轨道交叉和轨道误差信号产生用于光学拾取器的寻道方向检测信号的装置

    公开(公告)号：US06961292B2

    公开(公告)日：2005-11-01

    申请号：US09817754

    申请日：2001-03-27

    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: G11B7/135 ,  G11B7/085 ,  G11B7/09 ,  G11B7/13

    CPC classification number: G11B7/131 ,  G11B7/08505 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353

    Abstract: An apparatus generating a seek direction detecting signal includes a light dividing unit dividing an incident light beam into at least two beams having a main beam and a sub-beam so that at least two beam spots including a main beam spot and at least one sub-beam spot having an optical aberration, can be focused in the track direction of an optical disk, the light dividing unit providing that the direction of the optical aberration of the sub-beam spot can be the tangential direction of the optical disk, an optical detector unit, a first signal processing portion processing a track error signal from signals output from the optical detector, a second signal processing portion processing a track cross signal from the signals output from the optical detector, and a generator generating the seek direction detecting signal from the phase difference between the track cross signal and the track error signal.

    Abstract translation: 产生搜索方向检测信号的装置包括：光分离单元，将入射光束分成至少两束具有主光束和子光束的光束，使得至少两个光束点包括主光束斑点和至少一个子光束点， 具有光学像差的光束点可以在光盘的轨道方向上聚焦，所述光分割单元使得子光束点的光学像差的方向可以是光盘的切线方向，光学检测器 单元，第一信号处理部分，从光检测器输出的信号处理轨道误差信号;第二信号处理部分，处理来自光检测器输出的信号的轨道交叉信号;以及发生器，其生成来自所述光检测器的寻道方向检测信号 轨道交叉信号和轨道误差信号之间的相位差。

Patent Agency Ranking