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91 条记录 (耗时 0.016 秒)

    Method and circuit for detecting playback signal which is compensated for time delay
    11.
    发明授权
    Method and circuit for detecting playback signal which is compensated for time delay 失效
    用于检测补偿时间延迟的重放信号的方法和电路

    公开(公告)号：US07009921B1

    公开(公告)日：2006-03-07

    申请号：US09563430

    申请日：2000-05-03

    申请人： Tatsuhiro Otsuka ,  Seong-sin Joo ,  Chong-sam Chung ,  Young-man Ahn ,  In-sik Park ,  Hea-jung Suh ,  Byung-in Ma ,  Byoung-ho Choi

    发明人： Tatsuhiro Otsuka ,  Seong-sin Joo ,  Chong-sam Chung ,  Young-man Ahn ,  In-sik Park ,  Hea-jung Suh ,  Byung-in Ma ,  Byoung-ho Choi

    IPC分类号： G11B20/18

    CPC分类号： G11B20/10009 ,  G11B7/005

    摘要： A method and circuit for providing a playback signal which is compensated for time delay. The circuit includes a time delay compensator for detecting a time difference between outputs of a photodetector and temporally matching part of the outputs of the photodetector and another part of the outputs of the photodetector, between which the time difference occurs, to compensate for time delay between different outputs of the photodetector, and an operational unit for summing the part of the outputs of the photodetector, which is compensated for the time delay, and the other part of the outputs of the photodetector to provide a playback signal. Accordingly, the circuit compensates for the time delay between the outputs of the photodetector, thereby increasing the degree of modulation of the data playback signal. In addition, the circuit maximumly suppresses the distortion or degradation of the signal and minimizes the occurrence of errors in the playback signal, thereby improving the reliability of the playback signal.

    摘要翻译： 一种用于提供补偿时间延迟的重放信号的方法和电路。 该电路包括时间延迟补偿器，用于检测光电检测器的输出之间的时间差，并且在时间上匹配部分光电检测器的输出和光电检测器的输出的另一部分之间产生时差，以补偿光电检测器之间的时间延迟 光检测器的不同输出和用于对补偿了时间延迟的光电检测器的输出的一部分进行求和以及光电检测器的输出的另一部分以提供重放信号的操作单元。 因此，电路补偿光电检测器的输出之间的时间延迟，从而增加数据重放信号的调制程度。 此外，电路最大限度地抑制信号的失真或劣化，并且使重放信号中的错误的发生最小化，从而提高重放信号的可靠性。

    Actuator for optical pickup, optical pickup, and optical recording/reproducing apparatus employing the same
    12.
    发明申请
    Actuator for optical pickup, optical pickup, and optical recording/reproducing apparatus employing the same 审中-公开
    用于光学拾取器，光学拾取器以及采用该光学拾取器的光学记录/再现装置的致动器

    公开(公告)号：US20050147000A1

    公开(公告)日：2005-07-07

    申请号：US10998172

    申请日：2004-11-29

    申请人： Seok-jung Kim ,  Young-man Ahn ,  Kwang Kim ,  Tae-kyung Kim ,  Jung-gug Pae ,  Tae-youn Heor ,  Chong-sam Chung

    发明人： Seok-jung Kim ,  Young-man Ahn ,  Kwang Kim ,  Tae-kyung Kim ,  Jung-gug Pae ,  Tae-youn Heor ,  Chong-sam Chung

    IPC分类号： G11B7/085 ,  G11B7/00 ,  G11B7/09 ,  G11B21/02

    CPC分类号： G11B7/0932 ,  G11B7/0933 ,  G11B7/0935

    摘要： An optical pickup actuator having: a moving part on which an objective lens to focus an incident beam onto an optical recording medium is mounted, a magnetic driver that drives the moving part in track and focus directions of the optical recording medium, and a support element that movably supports the moving part and has a first support portion with a first predetermined stiffness and a second support portion with a second predetermined stiffness different from the first predetermined stiffness. A center of gravity of the moving part, a center of support of the support element, and a center of a force determined by arrangement of the magnetic driver are coincident.

    摘要翻译： 一种光拾取器致动器，具有：安装用于将入射光束聚焦到光记录介质上的物镜的移动部件，驱动光记录介质的轨道和聚焦方向上的移动部分的磁驱动器，以及支撑元件 其可移动地支撑所述移动部件并且具有第一预定刚度的第一支撑部分和具有与所述第一预定刚度不同的第二预定刚度的第二支撑部分。 移动部件的重心，支撑元件的支撑中心和由磁驱动器的布置确定的力的中心一致。

    Low power flip-flop circuit
    13.
    发明授权
    Low power flip-flop circuit 有权

    公开(公告)号：US06828837B2

    公开(公告)日：2004-12-07

    申请号：US10670322

    申请日：2003-09-26

    申请人： Young-Man Ahn

    发明人： Young-Man Ahn

    IPC分类号： H03K3289

    CPC分类号： H03K3/037 ,  H03K3/012

    摘要： A flip-flop circuit includes a latch that holds an input signal responsive to an internal clock signal, a comparing circuit that compares the input signal with a latch output to provide a comparison signal, and an internal clock generator that receives an external clock signal and generates an internal clock signal responsive to the comparison signal. The internal clock generating circuit performs a NAND operation on the external clock signal and a delayed inverted version of the external clock signal, to generate the internal clock signal having pulse width smaller than the external clock signal and having rising and falling edges synchronized with the external clock signal. Power consumption is low because the clock buffer and the internal clock generating circuit do not perform switching operations when there is little or no variation in the input signal of the flip-flop.

    Optical pickup for improving properties of a reproduction signal
    14.
    发明授权
    Optical pickup for improving properties of a reproduction signal 失效
    光拾取器，用于改善再现信号的特性

    公开(公告)号：US06785209B2

    公开(公告)日：2004-08-31

    申请号：US09755175

    申请日：2001-01-08

    申请人： Chong-sam Chung ,  Tae-kyung Kim ,  Young-man Ahn ,  Hea-jung Suh

    发明人： Chong-sam Chung ,  Tae-kyung Kim ,  Young-man Ahn ,  Hea-jung Suh

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1356

    摘要： An optical pickup capable of focusing a main light spot and an auxiliary light spot including optical aberration when an optical disk is not tilted, and analyzing the main light spot and the auxiliary light spot with a photodetector, thereby correcting aberration. The optical pickup includes a light source emitting light; light splitting means for splitting an incident beam into at least two light beams including a first beam and a second beam so as to form at least two light spots on an optical disk; optical path changing means for changing the traveling path of the incident first and second beams; an objective lens focusing the first and second beams to form a main light spot and an auxiliary light spot, respectively, on the optical disk; a photodetector having first and second light receiving portions receiving the first and second beams reflecting from the optical disk and passing through the optical path changing means, respectively, and performing photoelectric conversion on the received beams to produce and detect electrical signals; and a signal processor correcting aberration caused by tilting of the optical disk, using the electrical signals.

    摘要翻译： 一种能够聚焦主光点的光学拾取器和当光盘不倾斜时包括光学像差的辅助光点，并且用光电检测器分析主光斑和辅助光斑，从而校正像差。 光学拾取器包括发射光的光源; 光分离装置，用于将入射光束分成包括第一光束和第二光束的至少两个光束，以便在光盘上形成至少两个光点; 用于改变入射的第一和第二光束的行进路径的光路改变装置; 物镜分别聚焦第一和第二光束以在光盘上形成主光点和辅助光斑; 光电检测器，具有第一和第二光接收部分，分别接收从光盘反射并通过光路改变装置的第一和第二光束，并对接收的光束执行光电转换以产生和检测电信号; 以及信号处理器，使用电信号校正由于光盘倾斜引起的像差。

    Manufacturing method of a master disk for forming an optical disk, and the master disk
    15.
    发明授权
    Manufacturing method of a master disk for forming an optical disk, and the master disk 失效
    用于形成光盘的主盘的制造方法和主盘

    公开(公告)号：US06242162B1

    公开(公告)日：2001-06-05

    申请号：US09073761

    申请日：1998-05-07

    申请人： Myong-do Ro ,  Young-man Ahn ,  Chang-min Park

    发明人： Myong-do Ro ,  Young-man Ahn ,  Chang-min Park

    IPC分类号： G03F726

    CPC分类号： G11B7/261 ,  G11B7/00718 ,  G11B7/24079 ,  G11B7/24085 ,  Y10S430/146

    摘要： A method for manufacturing a master disk for forming an optical disk, including the steps of forming an SiO2 film on a substrate; coating a first photoresist layer on the SiO2 film; exposing the first photoresist layer according to patterns of a groove formation recess and a land formation protrusion corresponding to a groove and a land, respectively; etching the first photoresist layer and the SiO2 film, to thereby form the groove formation recess and the land formation protrusion on the SiO2 film; coating a second photoresist layer on the SiO2 film, to thereby form the groove and the land at positions corresponding to the groove formation recess and the pit protrusion, respectively; exposing the second photoresist layer according to patterns of a pit where predetermined information is recorded; and etching the second photoresist layer, to thereby form the pits in the groove and the land.

    摘要翻译： 一种用于制造用于形成光盘的母盘的方法，包括以下步骤：在衬底上形成SiO 2膜; 在SiO 2膜上涂覆第一光致抗蚀剂层; 分别根据沟槽形成凹槽和对应于凹槽和焊盘的焊盘形成突起的图案露出第一光致抗蚀剂层; 蚀刻第一光致抗蚀剂层和SiO 2膜，从而在SiO 2膜上形成槽形成凹部和焊盘形成突起; 在所述SiO 2膜上涂覆第二光致抗蚀剂层，从而分别在对应于所述凹槽形成凹部和所述凹坑突起的位置处形成所述凹槽和所述凸台; 根据记录有预定信息的凹坑的图案曝光第二光致抗蚀剂层; 并蚀刻第二光致抗蚀剂层，从而在槽和焊盘中形成凹坑。

    Semiconductor memory module and semiconductor memory device
    18.
    发明申请
    Semiconductor memory module and semiconductor memory device 有权
    半导体存储器模块和半导体存储器件

    公开(公告)号：US20070171740A1

    公开(公告)日：2007-07-26

    申请号：US11540607

    申请日：2006-10-02

    申请人： Seok-Il Kim ,  You-Keun Han ,  Hoe-Ju Chung ,  Young-Man Ahn

    发明人： Seok-Il Kim ,  You-Keun Han ,  Hoe-Ju Chung ,  Young-Man Ahn

    IPC分类号： G11C29/00 ,  G11C7/00

    CPC分类号： G11C29/02 ,  G11C5/04 ,  G11C29/025 ,  H05K1/0268 ,  H05K1/181

    摘要： A semiconductor memory module and a semiconductor memory device are disclosed. In one embodiment, the invention provides a semiconductor memory module comprising a circuit board, a plurality of semiconductor memory devices adapted to operate during a test mode and a normal operation mode and mounted on the circuit board, a first signal line set comprising a plurality of first signal lines connected to the plurality of semiconductor memory devices, and a plurality of second signal line sets. Each semiconductor memory device comprises first terminals adapted to receive first signals from the first signal lines, second terminals connected to a corresponding one of the second signal line sets, a third terminal adapted to receive an enable signal during the test mode, and a signal transmitting unit adapted to output second signals to the second terminals in response to the enable signal.

    摘要翻译： 公开了半导体存储器模块和半导体存储器件。 在一个实施例中，本发明提供了一种半导体存储器模块，包括电路板，多个半导体存储器件，适于在测试模式和正常操作模式下操作并安装在电路板上，第一信号线组包括多个 连接到多个半导体存储器件的第一信号线，以及多个第二信号线组。 每个半导体存储器件包括适于从第一信号线接收第一信号的第一端子，连接到第二信号线组中对应的一个信号线组的第二端子，适于在测试模式期间接收使能信号的第三端子和信号传输 该单元适于响应于使能信号将第二信号输出到第二终端。

    Memory module and register with minimized routing path
    19.
    发明申请
    Memory module and register with minimized routing path 失效
    内存模块和注册最小化路由路径

    公开(公告)号：US20070127304A1

    公开(公告)日：2007-06-07

    申请号：US11633353

    申请日：2006-12-04

    申请人： Chil-Nam Yoon ,  Young-Man Ahn ,  Young-Jun Park ,  Sung-Joo Park

    发明人： Chil-Nam Yoon ,  Young-Man Ahn ,  Young-Jun Park ,  Sung-Joo Park

    IPC分类号： G11C8/00

    CPC分类号： G11C8/18 ,  G11C5/04 ,  G11C5/063

    摘要： A memory module includes a first memory group including a plurality of memory devices, a second memory group including a less number of memory devices with respect to the memory devices in the first memory group, a register configured to provide a command/address signal to the first memory group and a delayed command/address signal to the second memory group, a first signal line configured to transfer the command/address signal to the first memory group, and a second signal line configured to transfer the delayed command/address signal to the second memory group.

    摘要翻译： 存储器模块包括包括多个存储器件的第一存储器组，包括相对于第一存储器组中的存储器件的较少数量的存储器件的第二存储器组，配置成向第一存储器组件提供命令/地址信号的寄存器 第一存储器组和延迟的命令/地址信号到第二存储器组，第一信号线，被配置为将命令/地址信号传送到第一存储器组;以及第二信号线，被配置为将延迟的命令/地址信号传送到 第二内存组。