专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5257029A Transmission power control method and apparatus in satellite communication 失效
标题翻译：卫星通信中的发射功率控制方法和装置
公开(公告)号：US5257029A
公开(公告)日：1993-10-26
申请号：US900352
申请日：1992-06-18
申请人： Tokihiro Miyo
发明人： Tokihiro Miyo
IPC分类号： H04B1/04 , H04B7/005 , H04B7/15 , H04B7/185
CPC分类号： H04W52/38 , H04B7/18543
摘要： Signals including two signals having levels different from each other are transmitted to the satellite, and the phase difference between the return signals of the two signals is measured. Transmission power control is performed so that the phase difference becomes equal to the difference measured in clear weather conditions.

2. 发明授权

US5898339A Feedforward amplifier 失效
标题翻译：前馈放大器
公开(公告)号：US5898339A
公开(公告)日：1999-04-27
申请号：US912687
申请日：1997-08-18
申请人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Akira Seino
发明人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Akira Seino
IPC分类号： H03F1/32 , H04J1/00 , H03F1/26
CPC分类号： H03F1/3235
摘要： A feedforward amplifier having a distortion detection loop and a distortion elimination loop is provided that achieves increased accuracy, improved response, and stable operation. A variable attenuator is placed in front of a detector in a loop output stage, and the amount of attenuation in the variable attenuator is set large during a transient response period during the rising of the amplifier, and set small during a steady-state condition. The detection of the transition to the steady-state condition is accomplished, for example, by comparing the detector output with a prescribed threshold value. The width of perturbation is set large during a transient response period, and set small during a steady-state condition.
摘要翻译：提供具有失真检测回路和失真消除回路的前馈放大器，其实现了增加的精度，改进的响应和稳定的操作。可变衰减器放置在环路输出级中的检测器的前面，并且在放大器的上升期间的瞬态响应周期期间可变衰减器中的衰减量被设置得很大，并且在稳态条件期间设置得较小。例如，通过将检测器输出与规定的阈值进行比较来实现向稳态条件的转变的检测。在瞬态响应期间扰动宽度设置较大，在稳态条件下设置较小。

3. 发明授权

US6148185A Feed-forward amplifying device and method of controlling the same and base station with feed-forward amplifying device 失效
标题翻译：前馈放大装置及使用前馈放大装置控制相同基站的方法
公开(公告)号：US6148185A
公开(公告)日：2000-11-14
申请号：US594828
申请日：1996-01-31
申请人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Tatsuo Furukawa , Norio Tazawa , Yasushi Seino
发明人： Satoshi Maruyama , Tokihiro Miyo , Fumihiko Kobayashi , Tatsuo Furukawa , Norio Tazawa , Yasushi Seino
IPC分类号： H03F1/32 , H04J1/00 , H04L27/26 , H04B17/00
CPC分类号： H03F1/3235 , H04B17/104 , H04B17/13 , Y02B60/50
摘要： The present invention relates to a feed-forward amplifying device suitable for radio communication systems such as digital automobile telephone. In the feed-forward amplifying device which includes a distortion extracting loop circuit unit including a main amplifier which amplifies a main signal in a main signal system, the distortion extracting loop circuit unit creating a distortion extracting signal by controlling the phase of the main signal the distortion extracting signal obtained by canceling the main signal component of an output from the main amplifier; and a distortion removing loop circuit unit arranged at the rear stage of the main amplifier, the distortion removing loop circuit unit producing only the main signal component from a signal in the main signal system at the rear stage of the main amplifier using the distortion extracting signal obtained by canceling the main signal component, the distortion extracting loop circuit unit executes phase control by shifting a phase control point where the main signal can be most canceled, thus creating the distortion extracting signal. This device can improve the power efficiency with a small back-up of the amplifier and stably produce a low-distortion amplified signal.
摘要翻译：本发明涉及一种适用于数字汽车电话等无线通信系统的前馈放大装置。在包括失真提取环路电路单元的前馈放大装置中，包括放大主信号系统中的主信号的主放大器，失真提取回路电路单元通过控制主信号的相位来产生失真提取信号通过消除来自主放大器的输出的主信号分量而获得的失真提取信号; 以及设置在主放大器的后级的失真消除环路电路单元，失真消除环路电路单元，使用失真提取信号仅在主放大器的后级的主信号系统中的信号中产生主信号分量通过取消主信号分量获得，失真提取回路电路单元通过移位主信号可以被最多地取消的相位控制点来执行相位控制，从而创建失真提取信号。该器件可以通过放大器的小型备份来提高功耗，并稳定地产生低失真放大信号。

4. 发明授权

US4764730A Radio receiver demodulation system 失效
标题翻译：无线电接收机解调系统
公开(公告)号：US4764730A
公开(公告)日：1988-08-16
申请号：US16774
申请日：1987-02-20
申请人： Tokihiro Miyo , Toshio Kawasaki
发明人： Tokihiro Miyo , Toshio Kawasaki
IPC分类号： H04L1/00 , H04L27/227 , H04L27/38 , H04L27/22
CPC分类号： H04L27/3818 , H04L1/0054 , H04L27/2272
摘要： A radio receiver demodulation system which utilizes a sweep track type phase lock circuit and provides stable demodulation by starting and stopping the sweep on the basis of a decoded code error.
摘要翻译：一种无线电接收机解调系统，其利用扫描轨道型锁相电路，并通过基于解码的码错误启动和停止扫描来提供稳定的解调。

5. 发明授权

US5457710A Method and circuit for detecting burst signal 失效
标题翻译：检测突发信号的方法和电路
公开(公告)号：US5457710A
公开(公告)日：1995-10-10
申请号：US962116
申请日：1992-10-16
申请人： Tokihiro Miyo , Mitsuhiro Ono , Toshio Kawasaki
发明人： Tokihiro Miyo , Mitsuhiro Ono , Toshio Kawasaki
IPC分类号： H04L27/00 , H04L27/22 , H04L27/06
CPC分类号： H04L27/22 , H04L27/0012
摘要： A phase angle .theta. of a received signal is calculated according to a formula .theta.=tan.sup.-1 (Q/I), where I and Q are magnitudes of baseband signals obtained by quadrature detection of the received signal. An angular velocity .DELTA..theta. of the phase angle .theta. is also calculated. A variance parameter .SIGMA..sigma..sup.2 is calculated from a deviation .sigma.=.DELTA..theta.-.DELTA..theta., where .DELTA..theta. is a moving average of the .DELTA..theta.. The variance parameter .SIGMA..sigma..sup.2 thus calculated, is compared with a reference value to determine if a burst signal exists. Since the determination is performed essentially based on a phase of the received signal and not on an amplitude of the received signal, fluctuation of the amplitude of the received signal does not affect the decision.
摘要翻译：根据公式θ= tan-1（Q / I）计算接收信号的相角θ，其中I和Q是通过接收信号的正交检测获得的基带信号的幅度。也计算出相角θ的角速度ΔTATA。方差参数SIGMA西格玛2由偏差σ=DELTAθ-DELTAθ计算，其中DELTAθ是DELTAθ的移动平均值。将如此计算的方差参数SIGMA sigma 2与参考值进行比较，以确定是否存在突发信号。由于基于接收信号的相位而不是接收信号的振幅来执行确定，所以接收信号的振幅的波动不影响该决定。

6. 发明授权

US4934983A Data communication system having level control means 失效
标题翻译：具有电平控制装置的数据通信系统
公开(公告)号：US4934983A
公开(公告)日：1990-06-19
申请号：US98238
申请日：1987-09-18
申请人： Tokihiro Miyo
发明人： Tokihiro Miyo
IPC分类号： H04B3/10 , H04B7/15 , H04B7/155 , H04J1/00
CPC分类号： H04B3/10
摘要： In a data communication system, such as an earth station for a satellite communication system, a level control unit enables control of an amplitude of a data signal which is reduced in a cable, regardless of the form of the data signal. The data communication system includes a first system including a unit for sending a continuous signal having a first frequency and a data signal having second frequency, a cable, and a second system for receiving both sent signals through the cable. The second system includes a unit for correcting an amplitude of the data signal on the basis of an amplitude of the continuous signal to a predetermined level. The second system may also include a unit for further correcting the amplitude of the data signal on the basis of the frequency difference between the data signal and continuous signal, so that the amplitude is adjusted at the second frequency.
摘要翻译：在诸如用于卫星通信系统的地球站的数据通信系统中，电平控制单元能够控制电缆中减少的数据信号的幅度，而与数据信号的形式无关。数据通信系统包括第一系统，包括用于发送具有第一频率的连续信号和具有第二频率的数据信号的单元，电缆和用于通过电缆接收两个发送信号的第二系统。第二系统包括用于基于连续信号的幅度将数据信号的幅度校正到预定水平的单元。第二系统还可以包括用于基于数据信号和连续信号之间的频率差进一步校正数据信号的幅度的单元，使得在第二频率调整幅度。

7. 发明授权

US4656630A Automatic gain control circuit 失效
标题翻译：自动增益控制电路
公开(公告)号：US4656630A
公开(公告)日：1987-04-07
申请号：US687812
申请日：1984-12-31
申请人： Tokihiro Miyo
发明人： Tokihiro Miyo
IPC分类号： H03G3/20 , H04B7/212 , H04L27/08 , H04L27/22 , H04J3/06
CPC分类号： H03G3/3078 , H04B7/212 , H04L27/08
摘要： An automatic gain control (AGC) circuit has a first filter to which a received signal is applied, followed by a variable level adjusting circuit, for producing an automatic gain controlled signal. A feedback loop set up between the input and output of the variable level adjusting circuit, contains a second filter exhibiting a narrower equivalent noise band width than that of the first filter. The second filter responds a particular signal component having a predetermined frequency spectrum and a certain duration and performs an integration operation on the particular signal component.
摘要翻译：自动增益控制（AGC）电路具有施加接收信号的第一滤波器，随后是可变电平调整电路，用于产生自动增益控制信号。设置在可变电平调整电路的输入和输出之间的反馈回路包含具有比第一滤波器的等效噪声带宽更窄的第二滤波器。第二滤波器响应具有预定频谱和特定持续时间的特定信号分量，并对特定信号分量执行积分运算。

8. 发明授权

US4651104A Frequency converter with automatic frequency control 失效
标题翻译：变频器具有自动频率控制
公开(公告)号：US4651104A
公开(公告)日：1987-03-17
申请号：US510182
申请日：1983-07-01
申请人： Tokihiro Miyo
发明人： Tokihiro Miyo
IPC分类号： H03L7/14 , H04L27/00 , H04L27/233 , H03L7/00 , H03B1/00
CPC分类号： H03L7/14 , H04L27/2332 , H04L2027/0028 , H04L2027/0053 , H04L2027/0055 , H04L2027/0081
摘要： An automatic frequency control system for use in a frequency converter of a time division communication system, wherein the nonmodulated portion contained in the burst signal is selectively frequency discriminated. The frequency discriminated output is held for a certain period of time and then used as the oscillation frequency control signal of a local oscillating means.
摘要翻译：一种在时分通信系统的变频器中使用的自动频率控制系统，其中包含在脉冲串信号中的非调制部分被选择性地进行频率鉴别。频率鉴别输出保持一段时间，然后用作本地振荡装置的振荡频率控制信号。

9. 发明授权

US4475218A Carrier-recovery circuit 失效
标题翻译：载波恢复电路
公开(公告)号：US4475218A
公开(公告)日：1984-10-02
申请号：US452921
申请日：1982-12-27
申请人： Koichiro Takeda , Tokihiro Miyo
发明人： Koichiro Takeda , Tokihiro Miyo
IPC分类号： H04L27/227 , H03D3/24 , H04L27/22
CPC分类号： H04L27/2273
摘要： In the base-band carrier-recovery circuit used in the demodulator of radio equipment using a PSK modulated signal, a first doubled signal (sin 2.theta.) is obtained by using first and second outputs (sin .theta., cos .theta.) in-phase quadrature with each other from an in-phase quadrature detecting means. A second doubled signal (cos 2.theta.) having a phase difference of 90 degrees from the first doubled signal (sin 2.theta.) is obtained by fullwave rectifying the second output (cos .theta.) and transforming the output waveform. Thereafter a quadrupled signal (sin 4.theta.) is generated from the first and second doubled signals. The quadrupled signal is then fed back to a VCO via a loop filter, thereby recovering the reference carrier signal which is in phase with the received PSK modulated signal.
摘要翻译：在使用PSK调制信号的无线电设备的解调器中使用的基带载波恢复电路中，通过使用第一和第二输出（sinθ，cosθ）同相正交获得第一双重信号（sin2θ）彼此由同相正交检测装置。通过全波整流第二输出（cosθ）并变换输出波形，获得具有与第一双重信号（sin2θ）成90度相位差的第二倍频信号（cos2θ）。此后，从第一和第二加倍信号产生四倍信号（sin4θ）。然后通过环路滤波器将四倍信号反馈到VCO，从而恢复与所接收的PSK调制信号同相的参考载波信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式