公开(公告)号：US07020097B2

公开(公告)日：2006-03-28

申请号：US10033421

申请日：2001-12-28

申请人： Jeen Hur ,  Seong-Su Park ,  Seok-Bong Hyun ,  Kyu-Ha Baek ,  Hee-Tae Lee

发明人： Jeen Hur ,  Seong-Su Park ,  Seok-Bong Hyun ,  Kyu-Ha Baek ,  Hee-Tae Lee

IPC分类号： H04L12/26

CPC分类号： H04W48/16 ,  H04W28/06 ,  H04W48/18 ,  H04W48/20

摘要： In the adaptive wireless network system having a central optimizer and a method thereof, and in the record medium capable of being read through a computer having a writing of a program to realize the inventive method, in which information for a use wave environment of a corresponding subnet is gained from an access point regardless of a sort of wireless communication instruments so as to apply an optimum transmission/reception type of the corresponding subnet thereto; the system includes an optimizing unit for selecting optimum transmission/reception types of sub networks and transmitting them; an access point determining unit for providing node activity representative data and activity representative data of access point itself, to the optimizing unit, and determining it as the optimum transmission/reception type; and a communication node determining unit for re-determining its own transmission/reception type according to a requirement of the access point determining unit.

公开(公告)号：US5673350A

公开(公告)日：1997-09-30

申请号：US573553

申请日：1995-12-15

申请人： Min-Kyu Song ,  Seung-Goo Kang ,  Hee-Tae Lee ,  Nam Hwang ,  Seong-Su Park ,  Dong-Goo Kim

发明人： Min-Kyu Song ,  Seung-Goo Kang ,  Hee-Tae Lee ,  Nam Hwang ,  Seong-Su Park ,  Dong-Goo Kim

IPC分类号： G02B6/32 ,  B23K26/00 ,  B23K26/06 ,  B23K26/20 ,  G02B6/42 ,  H01S5/00 ,  G02B6/36

CPC分类号： G02B6/4237 ,  G02B6/4204 ,  G02B6/4225 ,  G02B6/4208

摘要： The present invention relates to an accurate method using laser welding for mounting an optical focusing lens utilized in a semi-conductor laser module for optical transmission and optical amplification through an optical fiber and a laser module so produced. The laser module includes an aligned laser diode, a lens fixture mounting the laser diode, a focusing lens mounted within a lens housing which in turn is mounted by a lens ring to the lens fixture. In the method, the steps include aligning mutual positions between the laser diode and the optical focusing lens in the vertical and horizontal directions so that the magnitude of the optical signal output from the optical fiber is maximized after the distance between the optical focusing lens and the optical fiber is adjusted and fixed to obtain a maximum optical coupling efficiency between the laser diode and the optical fiber. Next a laser-welding step is performed at an interval between the lens housing and the lens ring. The mutual positions between the laser diode and the optical focusing lens are aligned in the vertical and horizontal directions so that the magnitude of the optical signal output from the optical fiber is maximized. Finally a laser-welding step is performed at an interval between the lens fixture and the lens ring.

摘要翻译： 本发明涉及一种使用激光焊接的光学聚焦透镜，用于通过光纤和如此制造的激光模块在用于光传输和光放大的半导体激光器模块中安装光聚焦透镜的精确方法。 激光模块包括对准的激光二极管，安装激光二极管的透镜夹具，安装在透镜壳体内的聚焦透镜，透镜壳体又由透镜环安装到透镜夹具。 在该方法中，步骤包括在垂直和水平方向上对准激光二极管和光学聚焦透镜之间的相互位置，使得从光纤输出的光信号的大小在光聚焦透镜和 光纤被调整和固定，以获得激光二极管与光纤之间的最大光耦合效率。 接下来，在透镜壳体和透镜环之间的间隔进行激光焊接步骤。 激光二极管和光聚焦透镜之间的相互位置在垂直和水平方向上对准，使得从光纤输出的光信号的幅度最大化。 最后，以透镜夹具和透镜环之间的间隔进行激光焊接步骤。

公开(公告)号：US06937733B2

公开(公告)日：2005-08-30

申请号：US10269701

申请日：2002-10-11

申请人： Hee-Tae Lee

发明人： Hee-Tae Lee

IPC分类号： H04S7/00 ,  H03G5/02 ,  H03G5/16 ,  H04S3/00 ,  H03G5/00

CPC分类号： H03G5/165 ,  H04R2499/13 ,  H04S3/00

摘要： An audio system is disclosed in which offset phenomenon caused by a phase difference between the reproduced audio signals of front speakers and rear speakers is prevented. In the system a plurality of equalizers compensate the frequency characteristics of the output signals of a volume controller. A power amplifier amplifies the power of the output signals. A phase adjusting circuit divides at least one or more sets of the audio signals into a plurality of frequency bands when the audio signals are inputted from a volume controller to the plurality of the equalizers, and adjusts the phase of at least one or more sets of the audio signals among the divided audio signals. Accordingly, phase interferences are prevented between the audio signal sets of the front speakers and the rear speakers, and therefore, the audio signals of the low frequency bands can be boosted in a natural manner.

摘要翻译： 公开了一种音频系统，其中防止由前置扬声器和后置扬声器的再现的音频信号之间的相位差引起的偏移现象。 在该系统中，多个均衡器补偿了音量控制器的输出信号的频率特性。 功率放大器放大输出信号的功率。 当音频信号从音量控制器输入到多个均衡器时，相位调整电路将至少一组或多组音频信号分成多个频带，并调整至少一组或多组音频信号的相位 分割音频信号之间的音频信号。 因此，防止前置扬声器和后置扬声器的音频信号组之间的相位干扰，因此可以以自然的方式提高低频带的音频信号。

公开(公告)号：US06819969B2

公开(公告)日：2004-11-16

申请号：US09963482

申请日：2001-09-27

申请人： Hee-Tae Lee ,  Yoon-Sei Park ,  Kwang-Sig Kim ,  Jong-Woo Kim

发明人： Hee-Tae Lee ,  Yoon-Sei Park ,  Kwang-Sig Kim ,  Jong-Woo Kim

IPC分类号： G06F1900

CPC分类号： B08B7/00 ,  B08B7/0035 ,  C23C16/4401 ,  C23C16/4405 ,  Y10T137/7724

摘要： An apparatus and a method for performing a chemical vapor deposition process that reduces particle contamination of a wafer, wherein a cleaning gas including a fluorine radical is introduced into the process chamber to clean the chamber. After loading a wafer in the process chamber, a deposition gas is introduced into the chamber to form a film on the wafer. An inert gas as a back flow-preventing gas is introduced into the process chamber through a cleaning gas supply line to prevent the deposition gas from flowing back toward the cleaning gas supply line. Thus, the cleaning gas supply line is prevented from being contaminated by the deposition gas and particle formation on the wafer during deposition of the film is reduced, so that yield and reliability of the semiconductor device may be improved.

摘要翻译： 一种用于执行减少晶片的颗粒污染的化学气相沉积工艺的装置和方法，其中将包含氟自由基的清洁气体引入处理室以清洁室。 在处理室中装载晶片之后，将沉积气体引入室中以在晶片上形成膜。 作为防回流气体的惰性气体通过清洁气体供给管线被引入处理室，以防止沉积气体向清洁气体供应管线流回。 因此，防止清洗气体供给管线被沉积气体污染，并且在沉积膜时晶片上的颗粒形成减少，从而可以提高半导体器件的成品率和可靠性。