公开(公告)号：KR100325718B1

公开(公告)日：2002-03-06

申请号：KR1019990020631

申请日：1999-06-04

Applicant: 한국과학기술원

Inventor： 성단근 ,  김태석

IPC: H04M11/04

Abstract: 본발명은각 층마다중계기를구비하는옥내셀 환경에서이동승강기및 승강기를이용하기위해통화중인이동가입자가기다리는승강기대기영역을커버하는이동승강기중계기시스템및 그통화방법에관한것으로, 상기승강기중계기가관리하는승강기셀의적정위치에배치되어상기승강기중계기를관리하는중앙기지국과의인터페이스와신호증폭을담당하는하나의중계기능부와상기승강기및 대기영역에각각배치되어전파송수신을담당하는다수의무선기능부를구비하는중계기와, 상기중계기의다수의무선기능부를통해상기중계기중계기능부와접속하기위한이동국을포함하여구성됨으로써, 이동전화가입자들이승강기내부에서나승강기를출입하면서끊김이없는좋은품질의통화를지속할수 있을뿐만아니라승강기내부에서통화중핸드오프의발생을제거시킬수 있는것이다.

公开(公告)号：KR100301946B1

公开(公告)日：2001-10-27

申请号：KR1019980043596

申请日：1998-10-19

Applicant: 한국과학기술원

Inventor： 김진중 ,  민승현 ,  성단근 ,  최순달

IPC: H03B5/08

Abstract: 본 발명은 발진기에 관한 것이며, 특히, 외부로부터 제어 단자로 입력되는 전압에 따라 연속적으로 주파수를 가변시키는 능동 잡음 제어 회로를 포함하고 있는 발진 장치를 제공하는 데 그 목적이 있다.
본 발명에 따르면, 외부로부터 입력되는 제어 전압에 따라 가변되는 발진 주파수를 생성하기 위한 발진 수단; 외부로부터 인가되는 전원 전압을 전원 전압 공급선을 통하여 상기 발진 수단에 공급하기 위한 전원 전압 입력단; 및 상기 전원 전압 공급선에 직렬로 연결되고, 한 끝단이 상기 발진 수단에 연결되어 있으며, 상기 전원 전압 입력단으로부터 입력되는 고주파 잡음 신호를 제거하기 위한 잡음 제거 수단을 포함하며, 상기 잡음 제거 수단은, 상기 전원 전압 입력단과 접지 사이에 연결되어 있는 저역 통과 필터와 상기 전원 전압 공급선에 직렬 연결되어 있고, 한 끝단이 상기 발진 수단에 연결되어 있으며 상기 저역 통과 필터에 제어 단자가 연결되어 있는 트랜지스터를 포함하여 이루어진 발진 장치가 제공된다.

公开(公告)号：KR100292807B1

公开(公告)日：2001-06-15

申请号：KR1019990008110

申请日：1999-03-11

Applicant: 한국과학기술원

Inventor： 성단근 ,  권영훈 ,  윤지영

IPC: H04B7/14

Abstract: 본발명은다중스폿빔을가지는저궤도위성을이용한개인통신시스템에관한것으로서, 다중스폿빔을가지는저궤도위성통신시스템에서새로운호 또는핸드오프호 접속하는단말기는, 호접속시에접속가능한모든스폿빔에대하여단말기의위성내 체재시간과스폿빔내 체재시간정보를고려하여핸드오프를수행한다. 특히, 위성내 체재시간이긴 스폿빔중 스폿빔내 체재시간이가장긴스폿빔에접속한다. 단말기의위성내 체재시간은스폿빔의클래스정보를이용하여계산하고, 단말기의스폿빔내 체재시간은스폿빔의송신신호의전계강도를이용하여계산한다. 상기한본 발명은, 단말기의위성내 체재시간과스폿빔내 체재시간을고려하여호를설정하기때문에위성간핸드오프발생율과스폿빔간핸드오프발생율을감소시킬수 있으며, 호진행중 핸드오프실패에의한호 절단확률을감소시킬수 있는효과가있다.

公开(公告)号：KR1020010025906A

公开(公告)日：2001-04-06

申请号：KR1019990036966

申请日：1999-09-01

Applicant: 한국과학기술원

Inventor： 이현우 ,  김병진 ,  이성호 ,  남명룡 ,  성단근

IPC: B64G99/00

Abstract: PURPOSE: A star sensor and a star recognizing/tracking method thereof are provided to prevent a wrong reference voltage from being inputted in an ADC(Analog Digital Converter), to effectively drive a peltier cooler and to have a large capacity of CCD(Charge Coupled Device) image buffer. CONSTITUTION: A reference voltage generation circuit(210) comprises a DAC(Digital Analog Converter) for the analog conversion of a signal for generating a reference voltage; a high reference voltage setting unit(211) including amplifiers(A1,A3) for amplifying the output of the DAC in two stages; a DAC for the analog conversion of a signal for generating a low reference voltage; a low reference voltage setting unit(212) including amplifiers(A2,A4) for amplifying the output of the DAC in two stages; and a resistance(R5) prepared between a non-inversion input terminal of the amplifier of the high reference voltage setting unit and the non-inversion input terminal of the amplifier of the low reference voltage setting unit to generate the high reference voltage of the ADC bigger than the low reference voltage. The ADC reference voltage setting unit is made up to make the high reference voltage bigger than the low reference voltage of the ADC for converting a photo of a star to a digital signal. Accordingly, the error of setting the reference voltage is prevented.

Abstract translation: 目的：提供星形传感器和星型识别/跟踪方法，以防止在ADC（模拟数字转换器）中输入错误的参考电压，以有效驱动珀尔图尔冷却器并具有大容量的CCD（电荷耦合 设备）图像缓冲区。 构成：参考电压产生电路（210）包括用于产生参考电压的信号的模拟转换的DAC（数字模拟转换器）; 高参考电压设定单元（211）包括放大器（A1，A3），用于两级放大DAC的输出; 用于产生低参考电压的信号的模拟转换的DAC; 低参考电压设定单元（212），包括放大器（A2，A4），用于两级放大DAC的输出; 以及在高参考电压设定单元的放大器的非反相输入端与低参考电压设定单元的放大器的非反相输入端之间准备的电阻（R5），以产生ADC的高参考电压 大于参考电压低。 ADC参考电压设置单元用于使高参考电压大于ADC的低参考电压，以将星形照片转换为数字信号。 因此，防止设定基准电压的误差。

公开(公告)号：KR100265383B1

公开(公告)日：2000-09-15

申请号：KR1019970048368

申请日：1997-09-24

Applicant: 한국과학기술원

Inventor： 성단근 ,  강상혁

IPC: H04L12/26 ,  H04L12/28

Abstract: PURPOSE: A system for measuring traffic using a virtual buffer in an ATM(Asynchronous Transfer Mode) multiplexer is provided to introduce a virtual buffer which is a monitoring buffer, to effectively detect a characteristic of multiplexing input traffic and correctly estimate the performance of the ATM multiplexer. CONSTITUTION: An ATM(Asynchronous Transfer Mode) multiplexer(1) has a buffer(4) for storing cells(3) doubly inputted from traffic sources(2). A monitoring buffer system(7) including a virtual buffer(8) has an input traffic load identical with that of the ATM multiplexer(1), and has a constant output transmission speed. Monitors(12-14) measure traffic variables, through an arrival time(Xi) of virtual traffic cells, the number(Ni) of arrived cells, and the number(Qn) of waiting cells inputted to the virtual buffer(8) of the monitoring buffer system(7). Counters(15-19) calculate distribution for the number of waiting cells, a moment for a cell arrival time interval and autocorrelation, or a moment for the number of cells arrived during a predetermined time.

Abstract translation: 目的：提供一种使用ATM（异步传输模式）复用器中的虚拟缓冲区测量流量的系统，以引入作为监视缓冲区的虚拟缓冲器，以有效地检测复用输入流量的特性并正确估计ATM的性能 复用器。 构成：ATM（异步传输模式）多路复用器（1）具有用于存储从业务源（2）双重输入的小区（3）的缓冲器（4）。 包括虚拟缓冲器（8）的监视缓冲器系统（7）具有与ATM多路复用器（1）相同的输入业务负载，并且具有恒定的输出传输速度。 监视器（12-14）通过虚拟通信信元的到达时间（Xi），到达信元的数量（Ni）和输入到虚拟缓冲器（8）的等待信元的数量（Qn）来测量流量变量 监控缓冲系统（7）。 计数器（15-19）计算等待单元数的分配，单元到达时间间隔的时刻和自相关，或在预定时间内到达的单元数的时刻。

公开(公告)号：KR100262663B1

公开(公告)日：2000-08-01

申请号：KR1019980009983

申请日：1998-03-23

Applicant: 한국과학기술원

Inventor： 성단근 ,  권영훈 ,  윤지영

IPC: H01Q21/00 ,  H01Q25/00 ,  H04B10/118

Abstract: PURPOSE: A satellite transmission antenna beam pattern in a low orbit satellite communication system and a call accessing method thereof are provided to compares intensities of a plurality of pilot signals received from a plurality of satellites and select a satellite having a greatest intensity. CONSTITUTION: A duplexer(31) receives a signal and separates a satellite transmission signal from the received signal. A power divider(32) divides the satellite transmission signal into n antennae with respect &thgr; direction. &thgr; direction phase transitional device(33) is connected to n &thgr; direction antenna input terminal and controls a phase of the satellite transmission signal. A &thgr; direction power divider(41) divides a unit &thgr; direction antenna input signal into each antenna of &thgr; direction. A &thgr; direction phase transitional device(42) is connected to the &thgr; direction antenna input terminal and controls a phase of the unit &thgr; direction antenna input signal.

Abstract translation: 目的：提供低轨道卫星通信系统中的卫星发射天线波束图案及其呼叫访问方法，以比较从多颗卫星接收的多个导频信号的强度，并选择具有最大强度的卫星。 构成：双工器（31）接收信号并将卫星传输信号与接收到的信号分开。 功率分配器（32）将卫星传输信号与n天线分开， 方向。 ＆thgr; 方向相位过渡装置（33）连接到n＆amp; 方向天线输入端子，并控制卫星传输信号的相位。 A＆thgr 方向功率分配器（41）将单元与第 方向天线输入信号到每个天线 方向。 A＆thgr 方向相位过渡装置（42）连接到 方向天线输入端子，并控制单元的相位; 方向天线输入信号。

公开(公告)号：KR1020000026175A

公开(公告)日：2000-05-15

申请号：KR1019980043596

申请日：1998-10-19

Applicant: 한국과학기술원

Inventor： 김진중 ,  민승현 ,  성단근 ,  최순달

IPC: H03B5/08

Abstract: PURPOSE: An oscillating device is provided to include a circuit for removing active noises by reducing a high frequency noise signal, inputted from power supply voltage, through including a noise eliminating filter having active elements to an input terminal. CONSTITUTION: An oscillating device including a circuit for removing active noises comprises an oscillator(230), -an input terminal of power supply voltage, and a noise eliminator. The oscillator generates oscillating frequency varied according to control voltage which is inputted from outside. The input terminal of power supply voltage supplies the power supply voltage applied from outside to the oscillator through a power supplying line. The noise eliminator is connected to the power supplying line in series, and one end thereof is connected to the oscillator, and eliminates a high frequency noise signal inputted from the input terminal of the power supply voltage. The noise eliminator comprises a low band pass filter and a transistor. The low band pass filter is connected between the input terminal and a contact. The transistor is connected to the supplying line in series, and one end thereof is connected to the oscillator. A control terminal is connected to the low band pass filter.

Abstract translation: 目的：提供一种振荡装置，通过将包括具有有源元件的噪声消除滤波器包括在输入端子中，通过减少从电源电压输入的高频噪声信号来包括用于去除有源噪声的电路。 构成：包括用于去除有源噪声的电路的振荡装置包括振荡器（230）， - 电源电压的输入端和噪声消除器。 振荡器产生根据从外部输入的控制电压而变化的振荡频率。 电源电压输入端通过供电线提供从外部向振荡器施加的电源电压。 噪声消除器串联连接到供电线，其一端连接到振荡器，并且消除了从输入端输入的电源电压的高频噪声信号。 噪声消除器包括低通滤波器和晶体管。 低通滤波器连接在输入端和触点之间。 晶体管串联连接到供电线，其一端连接到振荡器。 控制端子连接到低通带滤波器。

公开(公告)号：KR1020000025822A

公开(公告)日：2000-05-06

申请号：KR1019980043055

申请日：1998-10-14

Applicant: 한국과학기술원

Inventor： 이임평 ,  구자춘 ,  정성인 ,  김현구 ,  성단근 ,  최순달

IPC: G05F1/67 ,  H02S40/30 ,  H02J7/35

CPC classification number: Y02E10/50

Abstract: PURPOSE: A power generation circuit for a solar battery is provided to maximize a generation efficiency of a solar battery, periodically opens a total solar battery array, measures an opening voltage of a solar battery array, and sets a maximum output voltage of a solar battery array with reference to the opening voltage, simplifies a circuit configuration, and enhances a stability and a reliability of the circuit. CONSTITUTION: A power generation circuit includes a switching part(81), a solar battery opening regulation part(82), an opening voltage sensor(83), a controller(84), and a maximum voltage setting part(85). The switching part(81) is inserted between the solar battery array and the power regulator, and adjusts an opening of the solar battery array. The solar battery opening regulation part(82) outputs a switching control signal to the switching part. The opening voltage sensor(83) measures an opening voltage of the solar battery array when the solar battery array is opened by the switching part. The controller(84) generates a periodic actuation signal to both the opening voltage sensor and the solar battery opening regulation part. The maximum voltage setting part(85) sets a maximum output voltage through an opening voltage generated from the opening voltage sensor, and outputs a control signal to the power regulation part in order to apply a maximum output power of the solar battery array to a load. Thereby, the power generation circuit maximizes a generation efficiency of a solar battery, periodically opens a total solar battery array, measures an opening voltage of a solar battery array, and sets a maximum output voltage of a solar battery array with reference to the opening voltage, simplifies a circuit configuration, and enhances a stability and a reliability of the circuit.

Abstract translation: 目的：提供一种用于太阳能电池的发电电路，以使太阳能电池的发电效率最大化，周期性地打开整个太阳能电池阵列，测量太阳能电池阵列的开路电压，并设置太阳能电池的最大输出电压 参考开启电压的阵列，简化了电路配置，并增强了电路的稳定性和可靠性。 构成：发电电路包括开关部（81），太阳能电池开路调节部（82），开路电压传感器（83），控制器（84）和最大电压设定部（85）。 开关部（81）插入在太阳能电池阵列和功率调节器之间，调整太阳能电池阵列的开口。 太阳能电池开路调节部（82）向切换部输出切换控制信号。 打开电压传感器（83）在通过切换部打开太阳能电池阵列时，测量太阳能电池阵列的开启电压。 控制器（84）向打开电压传感器和太阳能电池开启调节部分产生周期性致动信号。 最大电压设定部（85）通过从开路电压传感器产生的开路电压设定最大输出电压，并将控制信号输出到功率调节部，以将太阳能电池阵列的最大输出功率施加到负载 。 因此，发电电路使太阳能电池的发电效率最大化，周期性地打开整个太阳能电池阵列，测量太阳能电池阵列的开路电压，并根据开启电压设定太阳能电池阵列的最大输出电压 简化了电路结构，提高了电路的稳定性和可靠性。

公开(公告)号：KR1020000025160A

公开(公告)日：2000-05-06

申请号：KR1019980042112

申请日：1998-10-08

Applicant: 한국과학기술원

Inventor： 배정석 ,  장영순 ,  이상현 ,  이동우 ,  윤성기 ,  성단근

IPC: B64G1/38

Abstract: PURPOSE: An impact damper is provided to guarantee the safety of important components attached to an opening panel from impact when the opening panel attached to an artificial satellite opens. CONSTITUTION: An impact damper contains an opening panel bracket(10) in a Y shape installed on the opening panel, a plate spring(20) having a U shape side section, a pyro-bracket(30) installed in a fixing panel(6), a pyro(40), a pyro-cover(50) and a fixing bar(60). A pyro controlling unit delivers an explosion control signal to the pyro when the fixing panel opens the opening panel. Then, explosion occurs in a hole formed in the lower part of the pyro. Also the fixing bar penetrated into the lower hole of the pyro is cut. Therefore, the opening panel opens by dynamic stability of the plate spring deformed with an initial load.

Abstract translation: 目的：提供一种冲击阻尼器，以确保连接在人造卫星上的开启面板打开时，连接在开口面板上的重要部件的安全性受撞击影响。 构造：冲击阻尼器包括安装在开口面板上的Y形开口面板支架（10），具有U形侧面部分的板簧（20），安装在固定板（6）中的火炬支架（30） ），火焰（40），火焰盖（50）和固定杆（60）。 当固定面板打开开口面板时，热电控制单元将爆炸控制信号传递给热解器。 然后，在焦炭的下部形成的孔中发生爆炸。 此外，穿透焦炭的下孔的固定杆被切割。 因此，通过初始负载变形的板簧的动态稳定性，开启面板打开。

公开(公告)号：KR1020000024781A

公开(公告)日：2000-05-06

申请号：KR1019980041472

申请日：1998-10-01

Applicant: 한국과학기술원

Inventor： 유상근 ,  장현석 ,  강경인 ,  김이을 ,  김용민 ,  성단근

IPC: H03G9/00

Abstract: PURPOSE: A control current generating circuit is provided to compensate an amplification degree when the amplification degree is varied according to an internal temperature of an amplifier and an external circumstance. CONSTITUTION: A control current generating circuit comprises a user interface(10) which outputs a control signal varied according to an amplification degree command signal inputted by a user. A voltage generating part(20) divides a temperature compensation drive voltage(VTC) according to the control signal to generate a control voltage. A current generating part(30) generates a control current varied according to the control voltage to supply the control current to an amplifier(40). A temperature sensor(50) senses a variation of both an external temperature and an internal temperature of the amplifier(40), and outputs a temperature sense signal as a sense result. A temperature compensating part(60) receives the temperature sense signal to output the temperature compensation drive voltage(VTC) for compensating a variation of an amplification degree of the amplifier(40)varied according to a temperature. A circuit protection part(70) limits a lower value and an upper value of the drive voltage(VTC).

Abstract translation: 目的：提供控制电流产生电路，用于根据放大器的内部温度和外部环境来改变放大度时的放大度。 构成：控制电流产生电路包括用户接口（10），其输出根据用户输入的放大度指令信号而变化的控制信号。 电压产生部分（20）根据控制信号划分温度补偿驱动电压（VTC）以产生控制电压。 电流产生部件（30）产生根据控制电压而变化的控制电流，以将控制电流提供给放大器（40）。 温度传感器（50）感测放大器（40）的外部温度和内部温度的变化，并且输出温度感测信号作为感测结果。 温度补偿部件（60）接收温度检测信号以输出温度补偿驱动电压（VTC），用于补偿根据温度变化的放大器（40）的放大度的变化。 电路保护部件（70）限制驱动电压（VTC）的较低值和较高值。