公开(公告)号：US06754112B2

公开(公告)日：2004-06-22

申请号：US10074309

申请日：2002-02-11

申请人： Young-man Ahn ,  Jin-ho So ,  Byung-se So ,  Seung-jin Seo

发明人： Young-man Ahn ,  Jin-ho So ,  Byung-se So ,  Seung-jin Seo

IPC分类号： G11C722

CPC分类号： G11C7/1093 ,  G11C7/1078 ,  G11C7/22 ,  G11C7/222

摘要： An integrated circuit device includes a delay circuit that is configured to delay a clock signal and is further configured to generate an output data signal in response to the delayed clock signal and an input data signal. Multiple devices are configured to respectively receive the output data signal in response to the clock signal.

摘要翻译： 集成电路装置包括延迟电路，其被配置为延迟时钟信号，并且还被配置为响应于延迟的时钟信号和输入数据信号而产生输出数据信号。 多个设备被配置为响应于时钟信号分别接收输出数据信号。

公开(公告)号：US06944737B2

公开(公告)日：2005-09-13

申请号：US10094448

申请日：2002-03-08

申请人： Young-man Ahn ,  Jin-ho So ,  Byung-se So

发明人： Young-man Ahn ,  Jin-ho So ,  Byung-se So

IPC分类号： G11C29/00 ,  G11C7/22 ,  G11C11/4076 ,  G11C29/14 ,  G06F12/00

CPC分类号： G11C29/12015 ,  G11C7/22 ,  G11C7/222 ,  G11C11/401 ,  G11C11/4076 ,  G11C29/1201 ,  G11C29/14

摘要： Memory modules and methods of testing memory modules are provided that include at least one memory device responsive to a memory clock signal having a memory clock frequency and a data buffer. The data buffer is responsive to a buffer clock signal having a first buffer clock frequency that is different from the memory clock frequency during a normal mode of operation and having a second buffer clock frequency that is equal to the memory clock frequency during a test mode of operation.

摘要翻译： 提供了测试存储器模块的存储器模块和方法，其包括响应于具有存储器时钟频率和数据缓冲器的存储器时钟信号的至少一个存储器件。 数据缓冲器响应于在正常操作模式期间具有与存储器时钟频率不同的第一缓冲时钟频率的缓冲时钟信号，并且具有在测试模式期间等于存储器时钟频率的第二缓冲时钟频率 操作。

公开(公告)号：US07487413B2

公开(公告)日：2009-02-03

申请号：US11398719

申请日：2006-04-06

申请人： Jung-kuk Lee ,  Seung-jin Seo ,  You-keun Han ,  Seung-man Shin ,  Young-man Ahn

发明人： Jung-kuk Lee ,  Seung-jin Seo ,  You-keun Han ,  Seung-man Shin ,  Young-man Ahn

IPC分类号： G11C29/00

CPC分类号： G11C29/56 ,  G11C5/04

摘要： A memory module testing apparatus and method include a test slot adapted to receive a target memory module, wherein the target memory module includes a first memory unit to store information related to the target memory module. The memory module testing apparatus further includes a second memory unit adapted to store information related to a memory module, and a first switching unit adapted to selectively provide a driving signal to at least one of the first memory unit and the second memory unit.

摘要翻译： 存储器模块测试装置和方法包括适于接收目标存储器模块的测试槽，其中所述目标存储器模块包括用于存储与所述目标存储器模块相关的信息的第一存储器单元。 存储器模块测试装置还包括适于存储与存储器模块相关的信息的第二存储器单元，以及适于选择性地向第一存储器单元和第二存储器单元中的至少一个提供驱动信号的第一开关单元。

公开(公告)号：US20060230249A1

公开(公告)日：2006-10-12

申请号：US11398719

申请日：2006-04-06

申请人： Jung-kuk Lee ,  Seung-jin Seo ,  You-keun Han ,  Seung-man Shin ,  Young-man Ahn

发明人： Jung-kuk Lee ,  Seung-jin Seo ,  You-keun Han ,  Seung-man Shin ,  Young-man Ahn

IPC分类号： G06F12/00

CPC分类号： G11C29/56 ,  G11C5/04

摘要： A memory module testing apparatus that comprises a test slot adapted to receive a target memory module, wherein the target memory module comprises a first memory unit adapted to store information related to the target memory module, is disclosed. The memory module testing apparatus further comprises a second memory unit adapted to store information related to a memory module, and a first switching unit adapted to selectively provide a driving signal to at least one of the first memory unit and the second memory unit. A memory module testing method for the memory module testing apparatus is also disclosed.

摘要翻译： 一种存储器模块测试装置，其包括适于接收目标存储器模块的测试槽，其中所述目标存储器模块包括适于存储与所述目标存储器模块相关的信息的第一存储器单元。 存储器模块测试装置还包括适于存储与存储器模块相关的信息的第二存储器单元，以及适于选择性地向第一存储器单元和第二存储器单元中的至少一个提供驱动信号的第一开关单元。 还公开了一种用于存储器模块测试装置的存储器模块测试方法。

公开(公告)号：US20110205880A1

公开(公告)日：2011-08-25

申请号：US13033868

申请日：2011-02-24

申请人： Bong-gi KIM ,  Young-man Ahn ,  Ichiro Morishita

发明人： Bong-gi KIM ,  Young-man Ahn ,  Ichiro Morishita

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/0903 ,  G11B7/1365 ,  G11B7/1374

摘要： An optical beam forming apparatus capable of forming a polarization of laser beam into an elliptic polarization includes a beam source to emit a semiconductor laser beam, a wave plate to receive the beam emitted from the beam source and to form an elliptic polarization, and a lens to focus the beam passed through the wave plate to form a beam spot on a disc.

摘要翻译： 能够将激光束的偏振形成为椭圆偏振的光束形成装置包括发射半导体激光束的光束源，接收从光束源发射的光束并形成椭圆偏振的波片，以及透镜 以将通过波片的光束聚焦以在光盘上形成光斑。

公开(公告)号：US07035178B2

公开(公告)日：2006-04-25

申请号：US10337361

申请日：2003-01-07

申请人： Byung-in Ma ,  Young-man Ahn ,  In-sik Park ,  Kwan-joon Kim ,  Byoung-ho Choi

发明人： Byung-in Ma ,  Young-man Ahn ,  In-sik Park ,  Kwan-joon Kim ,  Byoung-ho Choi

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/085 ,  G11B7/0948 ,  G11B7/131

摘要： An apparatus for and a method of producing a push-pull tracking error signal in an optical disc system having four light-receiving sections A, B, C, and D arranged in a radial direction of the optical disc. Pairs of signals PA, PB, PC and PD, corresponding to light receiving sections A, B, C and D, respectively are differentially combined to provide differential signals. One differential signal is filtered, amplified and differentially combined with another differential signal to output a tracking error signal. Accordingly, distortion of the tracking error signal during jumping to a desired track and distortion of the tracking error signal due to a defect of the optical disc are prevented.

摘要翻译： 在具有沿光盘的径向布置的四个光接收部分A，B，C和D的光盘系统中产生推挽跟踪误差信号的装置和方法。 对应于光接收部分A的信号对P，P，B，P，C和D， B，C和D分别差分组合以提供差分信号。 一个差分信号被滤波，放大并与另一个差分信号差分地组合以输出跟踪误差信号。 因此，防止了跳跃到期望的轨道期间的跟踪误差信号的失真以及由于光盘的缺陷导致的跟踪误差信号的失真。

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。

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。

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。

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。