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1. 发明公开

KR1020010030331A 디지털변조 신호수신기 失效
标题翻译：数字调制信号接收器
公开(公告)号：KR1020010030331A
公开(公告)日：2001-04-16
申请号：KR1020000053334
申请日：2000-09-08
申请人： 알프스 덴키 가부시키가이샤
发明人： 가와이사토시
IPC分类号： H04N7/20
CPC分类号： H03D3/004
摘要： PURPOSE: To normally receive a digital modulation signal without unlocking QPSK demodulation even when a PLL circuit corrects a local oscillation frequency at the reception of the digital modulation signal at a high bit rate. CONSTITUTION: The digital modulation signal receiver is provided with an IQ demodulator 3 that has two mixers 3a, 3b receiving a digital modulation signal, a voltage controlled local oscillator 4 that gives a local oscillation signal with a frequency nearly equal to a carrier frequency of the digital modulation signal to the mixers 3a, 3b, a PLL circuit 10 that outputs an error signal on the basis of a reference frequency signal and the local oscillation signal, a low pass filter 14 that smoothes the error signal to supply a control voltage to the local oscillator 4. The receiver is configured to change a frequency of the reference frequency signal, increases the frequency of the reference frequency signal more than a prescribed frequency when a transmission rate of the digital modulation signal is lower than a prescribed transmission rate and decreases the frequency of the reference frequency signal lower than the prescribed frequency when the transmission rate of the digital modulation signal is higher than the prescribed transmission rate.
摘要翻译：目的：即使当PLL电路以高比特率接收数字调制信号时校正本地振荡频率，也可以正常接收数字调制信号而不解锁QPSK解调。构成：数字调制信号接收机配置有IQ解调器3，IQ解调器3具有接收数字调制信号的两个混频器3a，3b，一个电压控制的本地振荡器4，其给出的频率几乎等于数字调制信号发送到混频器3a，3b，基于参考频率信号和本地振荡信号输出误差信号的PLL电路10，平滑该误差信号以向其提供控制电压的低通滤波器14 本地振荡器4.接收机被配置为当数字调制信号的传输速率低于规定的传输速率时，改变参考频率信号的频率，使参考频率信号的频率大于规定频率，并减小当数字模拟的传输速率时，参考频率信号的频率低于规定频率开信号高于规定的传输速率。

2. 发明授权

KR1019880001978B1 FM 수신기용 회로장치 失效
标题翻译： FM接收机的电路布置
公开(公告)号：KR1019880001978B1
公开(公告)日：1988-10-08
申请号：KR1019830000963
申请日：1983-03-10
申请人： 코닌클리케 필립스 엔.브이.
发明人： 볼프강놀드 , 빈프리드얀센 , 볼프디터리히게오르그카스페코비츠
IPC分类号： H04B1/26
CPC分类号： H03D3/004
摘要： The FM receiver has a negative loop gain for the lower frequencies of the demodulated signal. The output of the FM demodulator controls the frequency of an oscillator. A mxier mixes the oscillator's output with the input signal and its own output is coupled to the input of the FM demodulator. The loop has a reactive circuit containing a reactance controlled by the output of the FM demodulator and itself controlling the oscillator so that a reduced frequency sweep is obtained and so that the amplitude of the output signal and the transmission bandwidth are independent of the oscillator's frequency. The reactive circuit contains one or more low-pass filters with different cut-off frequency.
摘要翻译： FM接收机对解调信号的较低频率具有负环路增益。 FM解调器的输出控制振荡器的频率。一个混频器将振荡器的输出与输入信号进行混合，其自己的输出端耦合到FM解调器的输入端。该回路具有一个无功电路，其中包含由FM解调器的输出控制的电抗和本身控制振荡器的电抗，从而获得降低的频率扫描，从而输出信号和传输带宽的振幅与振荡器的频率无关。无功电路包含一个或多个具有不同截止频率的低通滤波器。

3. 发明公开

KR1020160053514A 3상 전력계통에서의 자동 고장 복구, 실시간 검출 및 표시 장치 无效
标题翻译：自动故障恢复，三相电力系统中的实时检测和显示设备
公开(公告)号：KR1020160053514A
公开(公告)日：2016-05-13
申请号：KR1020140152660
申请日：2014-11-05
申请人： 김인태 , 김나운
发明人： 김인태 , 김나운
IPC分类号： H02J3/26 , G01R31/02 , H02H3/253 , H03D3/00
CPC分类号： Y02E40/50 , H02J3/26 , G01R31/027 , H02H3/253 , H02P2201/15 , H03D3/004
摘要： 본발명은 3상전력계통에서발생되는전력품질상의문제를자동으로복구하고이를실시간으로검출및 표시해주는장치에관한것으로서, R, S, T, N의 3상 4선또는 R, S, T의 3상 3선전력선이 3상부하에공급되고있는시스템에있어서, 상기각각의전력선에서분기된분기선 R', S', T', N' 또는 R', S', T'가입력으로서공급되며, 3상전원의전력선 R, S, T에발생된위상편차를상시보정하여부하측에공급함으로써, 무효전력을감소하고역률을개선하는적어도하나의위상보정수단이포함된고장복구부를포함한다.
摘要翻译：本发明涉及一种用于自动恢复在三相电力系统中产生的电力质量问题并且实时检测和显示恢复的问题的装置。一种自动故障恢复装置，在具有提供给三相负载的R，S，T，N的三相四线或R，S，T三相线的三相三线的系统中包括故障恢复单元包括至少一个相位校正装置，用于通过提供从每条电力线分叉的发散线R'，S'，T'，N'或R'，S'，T'减少无功功率和提高功率因数作为输入，并通过定期校正相位差来提供在三相功率的R，S，T的电力线上产生的相位差。

4. 发明授权

KR100378386B1 디지털변조 신호수신기 失效
标题翻译： 디지털조조신호수신기
公开(公告)号：KR100378386B1
公开(公告)日：2003-03-29
申请号：KR1020000053334
申请日：2000-09-08
申请人： 알프스 덴키 가부시키가이샤
发明人： 가와이사토시
IPC分类号： H04N7/20
CPC分类号： H03D3/004
摘要： A digitally modulated signal receiver includes an IQ demodulator (3) having two mixers (3a, 3b) into which a digitally modulated signal is input. A voltage-controlled local oscillator (4) inputs into the mixers a local oscillation signal having substantially the same frequency as the carrier frequency of the digitally modulated signal. A PLL circuit (10) outputs an error signal based on a reference frequency signal and the local oscillation signal. A low-pass filter (6, 7) smoothes the error signal and supplies a resulting control voltage to the local oscillator. The frequency of the reference frequency signal is changeable in the following manner. When the transmission rate of the digitally modulated signal is lower than a predetermined transmission rate, the frequency of the reference frequency signal is increased to be higher than a predetermined frequency. When the transmission rate of the digitally modulated signal is higher than the predetermined transmission rate, the frequency of the reference frequency signal is decreased to be lower than the predetermined frequency.
摘要翻译：数字调制信号接收器包括具有两个混频器（3a，3b）的IQ解调器（3），数字调制信号输入到混频器中。电压控制的本地振荡器（4）将具有与数字调制信号的载波频率基本相同的频率的本地振荡信号输入到混频器。 PLL电路（10）基于参考频率信号和本地振荡信号输出误差信号。低通滤波器（6,7）平滑误差信号，并将产生的控制电压提供给本地振荡器。参考频率信号的频率可以通过以下方式改变。当数字调制信号的传输速率低于预定传输速率时，参考频率信号的频率增加到高于预定频率。当数字调制信号的传输速率高于预定传输速率时，参考频率信号的频率降低到低于预定频率。＆lt;图像＆GT;

5. 发明公开

KR1020000013887A 무선통신 시스템에서 더블 위상동기루프에 의한 복조회로 失效
标题翻译：无线通信系统中双相锁相环的调制电路
公开(公告)号：KR1020000013887A
公开(公告)日：2000-03-06
申请号：KR1019980033009
申请日：1998-08-14
申请人： 삼성전자주식회사
发明人： 이형환
IPC分类号： H04B1/10 , H04L27/18
CPC分类号： H03D3/248 , H03D3/004 , H03L7/087 , H03L7/185
摘要： PURPOSE: A modulation circuit is provided to prevent lock in time from being delayed. CONSTITUTION: The modulation circuit by double phase-locked loop in radio communication system includes first and second voltage control oscillators(20, 28), first and second phase comparator(16), a divider(30), second and third low band pass filters(18, 24) and a mixer(10). The second voltage control oscillator is to generate a high frequency calling frequency which is needful to receive from a designated low frequency signal and to detect a base signal. The divider is to fixedly divide the high frequency calling signal generated from the second voltage control oscillator and output it. The first phase comparator is to compare the high frequency calling frequency to detect the received middle frequency signal and the base signal and detect the phase difference. The second low band pass filter is to convert the phase difference which is detected from the first phase comparator to a voltage. The first voltage control oscillator is to generate a low frequency signal corresponding to the voltage converted from the low band pass filter. The second phase comparator is to compare the low frequency signal which is generated from the first voltage control oscillator and a phase of the low frequency signal which is divided from the divider and output the difference value between both. The third low band pass filter is to convert the value of the phase difference which is detected from the second phase comparator to a voltage and apply to the second voltage control oscillator. The mixer is to mix the received middle frequency signal and the high frequency calling frequency which is output from the second voltage control oscillator, detect the base signal and output.
摘要翻译：目的：提供调制电路，防止时间锁定延迟。构成：无线电通信系统中双锁相环的调制电路包括第一和第二电压控制振荡器（20,28），第一和第二相位比较器（16），分频器（30），第二和第三低通带通滤波器（18,24）和混合器（10）。第二压控振荡器用于产生从指定的低频信号接收并检测基本信号的高频呼叫频率。分频器用于固定地分频由第二压控振荡器产生的高频呼叫信号并输出。第一相比较器是比较高频呼叫频率来检测接收到的中频信号和基频信号，并检测相位差。第二低通滤波器是将从第一相位比较器检测的相位差转换为电压。第一压控振荡器用于产生与从低通带滤波器转换的电压对应的低频信号。第二相比较器是比较从第一压控振荡器产生的低频信号和从分频器分频的低频信号的相位，并输出两者之间的差值。第三低通滤波器是将从第二相位比较器检测的相位差的值转换为电压并施加到第二压控振荡器。混频器用于混合接收的中频信号和从第二压控振荡器输出的高频呼叫频率，检测基本信号并输出。

6. 发明授权

KR1019880001980B1 FM 수신기 失效
标题翻译： FM接收器
公开(公告)号：KR1019880001980B1
公开(公告)日：1988-10-08
申请号：KR1019830000933
申请日：1983-03-08
申请人： 코닌클리케 필립스 엔.브이.
发明人： 볼프디터리히게오르그카스페코비츠
IPC分类号： H04H5/00
CPC分类号： H03D3/004 , H04B1/1646
摘要： The receiver includes a frequency-locked loop comprising a VCO, a mixer circuit connected to an aerial input, an IF portion having an IF filter, an FM detector and a loop filter arrangement. A loop amplifier adjusts the transfer characteristic of the loop. The loop amplifier is connected to a control input of the VCO for feedback of the modulation signal of the received FM signal. The loop filter arrangement includes a low pass filter which selects the audio frequency stereo sum signal from a parallel with the low pass filter and selects the stereo difference stereophonic FM-mutiplex signal and a band filter which is in signal which is amplitude modulated on a suppressed stereo subcarrier from a stereophonic FM-multiplex signal.
摘要翻译：接收机包括一个包括VCO的频率锁定回路，连接到天线输入的混频器电路，具有IF滤波器的IF部分，FM检波器和环路滤波器装置。环路放大器调整环路的传输特性。环路放大器连接到VCO的控制输入端，用于反馈所接收的FM信号的调制信号。环路滤波器装置包括低通滤波器，其从低通滤波器并行地选择音频立体声和信号，并选择立体声立体声FM多复合信号和频带滤波器，该频带滤波器处于被抑制的幅度调制的信号中来自立体声FM多路复用信号的立体声副载波。

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