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89 条记录 (耗时 0.084 秒)

    Method of testing servo burst signals of hard disk drive and recording medium adapted therefor
    32.
    发明申请
    Method of testing servo burst signals of hard disk drive and recording medium adapted therefor 失效
    测试硬盘驱动器和其适应的记录介质的伺服脉冲串信号的方法

    公开(公告)号：US20050168858A1

    公开(公告)日：2005-08-04

    申请号：US11041941

    申请日：2005-01-26

    申请人： Yong-gwon Lee ,  Sang-hoon Chu ,  Chul Park ,  Cheol-hoon Park

    发明人： Yong-gwon Lee ,  Sang-hoon Chu ,  Chul Park ,  Cheol-hoon Park

    IPC分类号： G11B21/10 ,  G11B5/596 ,  G11B20/10 ,  G11B27/36

    CPC分类号： G11B5/59627 ,  G11B5/59633

    摘要： A method of testing quality of a servo burst signal recorded on a hard disk drive and a recording medium adapted therefor, the hard disk drive including a plurality of sectors within one track and the burst signals for servo control recorded radially on each sector. The method includes: detecting peak positions at a radial position in which amplitudes of the recorded burst signals peak respectively on each track; comparing the detected peak positions of the burst signals on each track; detecting peak position error count, the peak position error count being a number of tracks in which offset of the detected peak positions exceed an offset limit within a predetermined number of tracks; and if the peak position error count exceeds the offset limit, determining a write quality of the servo burst signal to be low. A servo burst signal recorded with uniform intensity and a servo burst signal recorded with shift from normal position can be detected. Therefore, the quality of a servo burst signal can be managed efficiently.

    摘要翻译： 一种测试记录在适于其的硬盘驱动器和记录介质上的伺服脉冲信号的质量的方法，所述硬盘驱动器包括一个磁道内的多个扇区，以及用于伺服控制的突发信号在每个扇区上径向记录。 该方法包括：在径向位置处检测峰值位置，其中记录的脉冲串信号的幅度分别在每个磁道上峰值; 比较每个轨道上所检测到的脉冲串信号的峰值位置; 检测峰值位置误差计数，峰值位置误差计数是其中检测到的峰值位置的偏移超过预定数量的轨道内的偏移极限的轨道数; 并且如果峰值位置误差计数超过偏移极限，则将伺服脉冲信号的写入质量确定为低。 可以检测到以均匀强度记录的伺服脉冲串信号和从正常位置移位记录的伺服脉冲串信号。 因此，可以有效地管理伺服脉冲串信号的质量。

    Raked circular-cone aerobraking orbital transfer vehicle
    33.
    发明授权
    Raked circular-cone aerobraking orbital transfer vehicle 失效
    碾圆锥形航空刹车轨道转运车

    公开(公告)号：US4903918A

    公开(公告)日：1990-02-27

    申请号：US348081

    申请日：1989-05-04

    申请人： Chul Park ,  Carol B. Davies

    发明人： Chul Park ,  Carol B. Davies

    IPC分类号： B64G1/62

    CPC分类号： B64G1/62

    摘要： An aerobraking orbital transfer vehicle (AOTV) (80) has aerobrake (82) with a blunted raked-off circular-cone configuration. The other components of the AOTV, including command/control module (95), fuel tanks (86, 88, 89 and 91), rocket engines (94) and afterbody (84), are positioned substantially along resultant force axis (104) of the AOTV (80). The axis (104) coincides with the resultant (sum of lift and drag) force vector. Afterbody (84) is mounted behind the aerobrake (82) with its length extending rearwardly from the aerobrake. The base flow clearance angle .phi. of the aerobrake (80) is 25.degree., thus allowing the afterbody (84) to extend rearwardly from the aerobrake (82) to a much greater extent than possible with a raked-off elliptic-cone aerobraking shield configuration. Afterbody size limitation and other problems associated with the raked-off elliptic-cone aerobraking shield configuration are alleviated by the combination of the aerobrake shape and positioning of the fuel tanks (86, 88, 89 and 91), rocket engines (94) and afterbody (84).

    摘要翻译： 航空制动轨道转运车辆（AOTV）（80）具有气动制动器（82），具有钝角的倾斜圆锥形构造。 AOTV的其他部件，包括指令/控制模块（95），燃料箱（86,88,89和91），火箭发动机（94）和后箱（84），基本上沿着合适的力轴（104） AOTV（80）。 轴（104）与结果（升力和牵引力）力矢量重合。 后体（84）安装在气动制动器（82）的后面，其长度从气动制动器向后延伸。 气动制动器（80）的基本流动间隙角度phi为25°，从而允许后体（84）从气动制动器（82）向后延伸到比可能的更大的程度，其具有倾斜的椭圆锥形气动制动屏蔽配置 。 通过组合气动制动器形状和燃料箱（86,88,89和91）的定位，火箭发动机（94）和后置体来减轻与离散椭圆锥形气动制动屏蔽结构相关的体积尺寸限制和其它问题 （84）。

    Semiconductor packages
    34.
    发明授权
    Semiconductor packages 有权

    公开(公告)号：US10319702B2

    公开(公告)日：2019-06-11

    申请号：US15860730

    申请日：2018-01-03

    申请人： Chul Park ,  Seonggwan Lee ,  Minkyeong Park

    发明人： Chul Park ,  Seonggwan Lee ,  Minkyeong Park

    IPC分类号： H01L25/04 ,  H01L25/07 ,  H01L25/11 ,  H01L25/075 ,  H01L25/065

    摘要： A semiconductor package includes a substrate including a signal pattern on an upper surface thereof, a chip stack on the substrate, and a first semiconductor chip and one or more spacers between the substrate and the chip stack. The chip stack includes one or more second semiconductor chips stacked on the substrate. The one or more spacers and the first semiconductor chip are adjacent to respective corners of a lowermost second semiconductor chip, in plan view. The one or more spacers have the same planar shape as the first semiconductor chip.

    SEMICONDUCTOR PACKAGES
    35.
    发明申请
    SEMICONDUCTOR PACKAGES 审中-公开

    公开(公告)号：US20190051634A1

    公开(公告)日：2019-02-14

    申请号：US15860730

    申请日：2018-01-03

    申请人： Chul Park ,  Seonggwan Lee ,  Minkyeong Park

    发明人： Chul Park ,  Seonggwan Lee ,  Minkyeong Park

    IPC分类号： H01L25/065

    摘要： A semiconductor package includes a substrate including a signal pattern on an upper surface thereof, a chip stack on the substrate, and a first semiconductor chip and one or more spacers between the substrate and the chip stack. The chip stack includes one or more second semiconductor chips stacked on the substrate. The one or more spacers and the first semiconductor chip are adjacent to respective corners of a lowermost second semiconductor chip, in plan view. The one or more spacers have the same planar shape as the first semiconductor chip.

    Method of broadcasting and receiving neighboring base station advertisement message in broadband wireless access system, and handover method using the same
    37.
    发明授权
    Method of broadcasting and receiving neighboring base station advertisement message in broadband wireless access system, and handover method using the same 有权
    在宽带无线接入系统中广播和接收邻近基站广告消息的方法，以及使用该方法的切换方法

    公开(公告)号：US08615243B2

    公开(公告)日：2013-12-24

    申请号：US12735140

    申请日：2008-10-14

    申请人： Chul Park ,  Chul Sik Yoon

    发明人： Chul Park ,  Chul Sik Yoon

    IPC分类号： H04W36/00

    CPC分类号： H04W48/12 ,  G06Q30/0241 ,  H04W36/0061 ,  H04W36/08 ,  H04W72/00

    摘要： The present invention relates to a method of broadcasting and receiving a neighboring base station advertisement message in a wideband wireless access system and a handover method using the same. In the present invention, a base station broadcasts a neighboring base station advertisement message including information that indicates that frequency overlay is supported in neighboring base stations to terminals. The terminal confirms whether frequency overlay is supported in the neighboring base stations included in the neighboring base station advertisement message, and can perform handover to a frequency overlay supporting base station as a destination base station. According to the present invention, when a non-frequency overlay communication system and a frequency overlay communication system are mixed with each other, it is possible to ensure that a frequency overlay supporting terminal performs handover from a base station of a frequency overlay communication system to a base station of another frequency overlay communication system.

    摘要翻译： 本发明涉及一种在宽带无线接入系统中广播和接收相邻基站广告消息的方法和使用该方法的切换方法。 在本发明中，基站广播包含指示相邻基站对终端支持频率叠加的信息的相邻基站广告消息。 终端确认在相邻基站广告消息中包括的相邻基站中是否支持频率叠加，并且可以执行到作为目的地基站的支持频率覆盖的基站的切换。 根据本发明，当非频率覆盖通信系统和频率覆盖通信系统彼此混合时，可以确保频率覆盖支持终端执行从频率覆盖通信系统的基站到基站的切换 另一个频率覆盖通信系统的基站。

    Initial access control method between personal subscriber station and radio access station in mobile communication system
    39.
    发明授权
    Initial access control method between personal subscriber station and radio access station in mobile communication system 有权
    移动通信系统中个人用户台与无线接入站之间的初始访问控制方法

    公开(公告)号：US08223695B2

    公开(公告)日：2012-07-17

    申请号：US12517184

    申请日：2007-11-08

    申请人： Chul Park ,  Chul-Sik Yoon

    发明人： Chul Park ,  Chul-Sik Yoon

    IPC分类号： H04W74/00

    CPC分类号： H04W48/16

    摘要： The present invention relates to an initial access based control method between a personal subscriber station and a radio access station in a mobile communication system. The present invention includes: a) selecting an initial access method corresponding to a first field value of a first parameter included in a first downlink channel descript message received from the radio access station; b) generating a first ranging request message corresponding to the initial access method; and c) transmitting the first ranging request message to the radio access station. The present invention guarantees mutual compatibility with the existing broadband wireless access system and realizes various initial access methods between the subscriber station and the radio access station.

    摘要翻译： 本发明涉及移动通信系统中个人用户台与无线接入站之间的初始接入控制方法。 本发明包括：a）选择与从无线电接入站接收的第一下行链路信道描述消息中包括的第一参数的第一字段值对应的初始接入方法; b）产生与初始访问方法相对应的第一测距请求消息; 以及c）将所述第一测距请求消息发送到所述无线电接入站。 本发明保证了与现有宽带无线接入系统的相互兼容性，实现了用户台与无线接入站之间的各种初始接入方式。