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1. 发明授权

US5291515A Spread spectrum communication device 失效
标题翻译：扩频通信设备
公开(公告)号：US5291515A
公开(公告)日：1994-03-01
申请号：US713462
申请日：1991-06-11
申请人： Yoshitaka Uchida , Mamoru Endo , Masahiro Hamatsu , Shigeo Akazawa
发明人： Yoshitaka Uchida , Mamoru Endo , Masahiro Hamatsu , Shigeo Akazawa
IPC分类号： H04B1/69 , H04B1/709 , H04J13/00 , H04L7/04 , H04L27/30
CPC分类号： H04L7/043 , H04B1/69 , H04B1/709 , H04J13/0074
摘要： On the transmitter side, data to be transmitted are converted into a plurality of parallel data sets by a serial-parallel converter 101 and spread spectrum modulation is effected by means of PN code generators 105 and selectors 102. Each of the modulated outputs is delayed by a delaying circuit 103 with reference to a sounder channel and the phase thereof. The output thus delayed and the output of the sounder channel are added by an adder 104 to be multiplexed and transmitted.On the receiver side, correlation between a received signal and a reference signal is formed by a correlator 201 to obtain a correlation pulse from the correlation output thus obtained. Data demodulation is effected by means of a sounder detecting circuit 209, a sampling pulse generating circuit 210 and an information detecting circuit 211, starting from this correlation pulse.According to the structure described above, in SS communication, data demodulation can be effected with a high efficiency by using a single correlator.
摘要翻译：在发射机侧，由串并行转换器101将要发送的数据转换成多个并行数据集，并通过PN码发生器105和选择器102进行扩频调制。每个调制输出被延迟参考发声器通道的延迟电路103及其相位。输出如此延迟，并且发声器通道的输出由加法器104相加以进行复用和发送。在接收机侧，由相关器201形成接收信号与参考信号之间的相关，以从这样获得的相关输出中获得相关脉冲。通过发声器检测电路209，采样脉冲发生电路210和信息检测电路211，从该相关脉冲开始进行数据解调。根据上述结构，在SS通信中，可以通过使用单个相关器以高效率进行数据解调。

2. 发明授权

US5228055A Spread spectrum communication device 失效
标题翻译：传播光谱通信设备
公开(公告)号：US5228055A
公开(公告)日：1993-07-13
申请号：US829469
申请日：1992-01-31
申请人： Yoshitaka Uchida , Mamoru Endo , Masahiro Hamatsu , Shigeo Akazawa
发明人： Yoshitaka Uchida , Mamoru Endo , Masahiro Hamatsu , Shigeo Akazawa
IPC分类号： H04J13/00
CPC分类号： H04J13/00 , H04J13/0074
摘要： On the transmitter side of a spread spectrum communication device according to the present invention, transmission date are converted into a plurality of parallel data sets by a serial-parallel convertor and spread-spectrum-modulation is effected by means of PN code generators and selectors. Different modulated outputs are delayed by delay devices, using a sounder channel and the phase thereof as a reference. The delayed outputs and the output of the sounder channel are added by an adder, multiplexed and transmitted.On the receiver side correlation of a received signal with a reference signal is formed by a correlator and a correlation pulse is obtained from the correlation output. Data are reproduced by means of a sounder detecting circuit, a sampling pulse generating circuit and an information detecting circuit.In this way data reproduction can be effected with a high efficiency by means of a single correlator.
摘要翻译：在根据本发明的扩展频谱通信设备的发射机侧，通过串行 - 并行转换器将传输日期转换成多个并行数据集，并且通过PN码发生器和选择器实现扩频调制。不同的调制输出由延迟器延迟，使用发声器通道及其相位作为参考。延迟输出和发声器通道的输出由加法器相加，进行多路传输。在接收机侧，通过相关器形成接收信号与参考信号的相关性，并从相关输出获得相关脉冲。数据通过发声器检测电路，采样脉冲发生电路和信息检测电路再现。以这种方式，可以通过单个相关器以高效率实现数据再现。

3. 发明授权

US4866734A Receiver for spread spectrum communication 失效
标题翻译：接收机用于扩频通信
公开(公告)号：US4866734A
公开(公告)日：1989-09-12
申请号：US222180
申请日：1988-07-21
申请人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
发明人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
IPC分类号： H04B1/707 , H04L27/227
CPC分类号： H04B1/709 , H04B1/70712 , H04L27/2278
摘要： A receiver for spread spectrum communication decoding spread spectrum signals so as to obtain data by correlating a same received signal given to a first input of each of the convolvers constituting a correlator with two reference signals given to the other input of each of the convolvers, is disclosed, in which a phase shifter is disposed on the other input side of either one of the convolvers and the phase shifter generates one of the two reference signals having a predetermined phase difference with respect to the other.
摘要翻译：用于扩展频谱通信的接收机解码扩展频谱信号，以通过将给予构成相关器的每个卷积器的第一输入的相同接收信号与给予每个卷积器的另一个输入的两个参考信号相关联来获得数据。公开了其中移相器设置在任一个卷积器的另一个输入侧，并且移相器产生相对于另一个具有预定相位差的两个参考信号中的一个。

4. 发明授权

US5347534A Automatic gain control system 失效
标题翻译：自动增益控制系统
公开(公告)号：US5347534A
公开(公告)日：1994-09-13
申请号：US475157
申请日：1990-02-05
申请人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
发明人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
IPC分类号： H04B1/707 , H04B1/709 , H04L9/00
CPC分类号： H04B1/709 , H04B1/70712
摘要： A spread spectrum receiver includes, for example, a correlator consisting of two convolvers whose correlation outputs are applied to a demodulator respectively via two variable gain amplifiers whose gains are controlled in response to a demodulation output from the demodulator.
摘要翻译：扩频接收机包括例如由两个卷积器组成的相关器，两个卷积器分别通过两个可变增益放大器将其相关输出施加到解调器，该可变增益放大器响应于来自解调器的解调输出来控制其增益。

5. 发明授权

US4908837A Receiver for spread spectrum communication 失效
标题翻译：接收机用于扩频通信
公开(公告)号：US4908837A
公开(公告)日：1990-03-13
申请号：US225398
申请日：1988-07-28
申请人： Masaharu Mori , Masahiro Hamatsu , Shigeo Akazawa
发明人： Masaharu Mori , Masahiro Hamatsu , Shigeo Akazawa
IPC分类号： H04B1/16
CPC分类号： H04B1/70712
摘要： A receiver for spread spectrum communication is disclosed, which is provided with two convolvers and in which a first and a second reference signal, each of which consists of a 4-phase-modulated signal formed on the basis of a first PN code, a second PN code and a first CW signal, are supplied to a second input of each of the convolvers, respectively, while a received signal is supplied to a first input of each of the convolvers so that the correlation output of each of the convolvers is decoded so as to obtain an information signal.
摘要翻译：公开了一种用于扩展频谱通信的接收机，其具有两个卷积器，其中第一和第二参考信号中的每一个包括基于第一PN码形成的4相调制信号，第二参考信号 PN码和第一CW信号分别提供给每个卷积器的第二输入端，同时将接收的信号提供给每个卷积器的第一输入端，使得每个卷积器的相关输出被解码为以获得信息信号。

6. 发明授权

US4924188A Spread spectrum receiver having phase shifter for effecting phase synchronization of two convolvers 失效
标题翻译：具有移相器的扩频接收机用于实现两个卷积器的相位同步
公开(公告)号：US4924188A
公开(公告)日：1990-05-08
申请号：US250236
申请日：1988-09-27
申请人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
发明人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
IPC分类号： H03H7/20 , H03H11/20 , H03H17/08
CPC分类号： H03H11/20
摘要： A phase shifter is disclosed which performs a desired phase shift by distributing an input signal to two signals whose phases are different by 90.degree. from each other which signals are added to each other after having been weighted with a sine and a cosine function signal, the sine and the cosine function signal being able to be set in a digital manner.
摘要翻译：公开了一种移相器，其通过将输入信号分配给相位彼此相差90°的两个信号来执行期望的相移，该信号在被正弦和余弦函数信号加权之后相互相加，正弦和余弦函数信号能够以数字方式设置。

7. 发明授权

US4899364A Automatic gain control system 失效
标题翻译：自动增益控制系统
公开(公告)号：US4899364A
公开(公告)日：1990-02-06
申请号：US224576
申请日：1988-07-26
申请人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
发明人： Shigeo Akazawa , Masaharu Mori , Masahiro Hamatsu
IPC分类号： H04B1/707
CPC分类号： H04B1/709 , H04B1/70712
摘要： A spread spectrum receiver includes, for example, a correlator consisting of two convolvers whose correlation outputs are applied to a demodulator respectively via two variable gain amplifiers whose gains are controlled in response to a demodulation output from the demodulator.
摘要翻译：扩频接收机包括例如由两个卷积器组成的相关器，两个卷积器分别通过两个可变增益放大器将其相关输出施加到解调器，该可变增益放大器响应于来自解调器的解调输出来控制其增益。

8. 发明授权

US4965759A Spread-spectrum receiver 失效
标题翻译：扩频接收机
公开(公告)号：US4965759A
公开(公告)日：1990-10-23
申请号：US294773
申请日：1989-01-06
申请人： Yoshitaka Uchida , Masahiro Hamatsu , Masaharu Mori
发明人： Yoshitaka Uchida , Masahiro Hamatsu , Masaharu Mori
IPC分类号： H04B1/707
CPC分类号： H04B1/707
摘要： A correlation pulse generator used in a receiver of a spread spectrum communication system comprises peak hold circuit for holding peak values of positive and negative correlation spikes, threshold setting circuits for generating thresholds based on the peak values, and a comparing circuit for comparing the threshold with a correlation spike to generate a correlation pulse, so that when a level difference exists between positive and negative correlation spike levels of a correlation output, their peaks can be held independently, and thresholds based on the peaks can be generated independently.
摘要翻译：在扩频通信系统的接收机中使用的相关脉冲发生器包括用于保持正和负相关峰值的峰值的峰值保持电路，基于峰值产生阈值的阈值设置电路，以及用于将阈值与产生相关脉冲的相关峰值，使得当相关输出的正相关峰值和负相关峰值电平之间存在电平差时，它们的峰值可以被独立地保持，并且可以独立地生成基于峰值的阈值。

9. 发明授权

US5574754A Sliding correlator 失效
标题翻译：滑动相关器
公开(公告)号：US5574754A
公开(公告)日：1996-11-12
申请号：US556439
申请日：1995-11-09
申请人： Takao Kurihara , Yoshitaka Uchida , Masahiro Hamatsu
发明人： Takao Kurihara , Yoshitaka Uchida , Masahiro Hamatsu
IPC分类号： H04J13/00 , H04B1/7095 , H04L7/04 , H04L7/00
CPC分类号： H04B1/7075 , H04B1/708 , H04B1/7085 , H04B1/7095 , H04L7/043
摘要： A sliding correlator for initial synchronization and tracking of a SS (Spread Spectrum)-modulated signal containing a transmitted pseudo noise (PN) code, digitizes the received signal, and attempts to correlate the PN code in the received signal with a locally generated reference PN code. Initial synchronization employs correlation with three reference PN codes, an early, center and late channel. When correlation is found between the transmitted PN code and one of the reference PN codes, the three reference PN codes are shifted to align the center channel with the correlated channel and to displace the early and late channel reference PN codes to one side and the other of the center channel. In one embodiment, the displacement is one-third chip, and in another embodiment, the displacement is one-half chip. In one embodiment for initial tracking, the three channels are displaced one chip from each other and, after failure to attain correlation in any of the channels, the three channels are displaced three chips to again seek synchronization. Initial Tracking, following initial synchronization, detects changes in correlation in the three channels, and adjust the frequency and/or the phase of the three reference PN codes to return the reference PN codes into a desired relationship with the transmitted PN code. In one embodiment of tracking, clockwise and counterclockwise cyclic permutation of the three reference PN codes is used to maintain alignment between the three reference PN codes and the transmitted PN code. In other embodiments, the condition of correlation, or lack thereof, in each channel is stored in a register and shifting of the reference PN codes is performed in response to the status of the register.
摘要翻译：用于初始同步和跟踪包含发射伪噪声（PN）码的SS（扩频））调制信号的滑动相关器对接收到的信号进行数字化，并尝试将接收信号中的PN码与本地生成的参考PN 码。初始同步采用与三个参考PN码（早期，中心和晚期信道）的相关性。当在所发送的PN码和参考PN码之一中发现相关时，三个参考PN码被移位以使中心信道与相关信道对准，并将早期和晚期信道参考PN码移位到一侧，而另一个的中心渠道。在一个实施例中，位移是三分之一芯片，在另一个实施例中，位移是二分之一芯片。在初始跟踪的一个实施例中，三个信道彼此一个位移，并且在不能在任何信道中获得相关性之后，三个信道被移位三个码片以再次寻找同步。初始跟踪在初始同步之后，检测三个通道中相关性的变化，并调整三个参考PN代码的频率和/或相位，以将参考PN代码返回到与发送的PN码的期望关系。在跟踪的一个实施例中，使用三个参考PN码的顺时针和逆时针循环置换来保持三个参考PN码和所发送的PN码之间的对准。在其他实施例中，每个信道中的相关条件或不存在的条件存储在寄存器中，并且响应于寄存器的状态执行参考PN码的移位。

10. 发明授权

US5073898A Communication device 失效
标题翻译：通讯设备
公开(公告)号：US5073898A
公开(公告)日：1991-12-17
申请号：US472089
申请日：1990-01-30
申请人： Mamoru Endo , Masahiro Hamatsu
发明人： Mamoru Endo , Masahiro Hamatsu
IPC分类号： H03H9/72 , H03D1/00 , H03D3/06 , H03D3/34 , H04B1/69 , H04J13/00
CPC分类号： H04B1/709 , H04B1/70712
摘要： A signal processing circuit utilizes a convolver correlating a reference carrier signal with a received signal. The correlator output is detected and then demodulated to output the signal information originally present on the carrier. For a conventional AM signal the reference carrier signal is applied at a frequency offset from the AM center frequency. When the carrier is an FM signal, the reference signal is applied at a frequency equal to the center frequency of the FM signal. Similar procedures are followed for a spread-modulated AM signal, and the reference signal is modulated with a suitably timed-reverse replica of the pseudo-noise code. A similar procedure is used to process spread-spectrum frequency shift keyed FM signals.
摘要翻译：信号处理电路利用将参考载波信号与接收信号相关联的卷积器。检测相关器输出，然后进行解调，输出载波上最初存在的信号信息。对于常规AM信号，参考载波信号以与AM中心频率偏移的频率施加。当载波是FM信号时，以等于FM信号的中心频率的频率施加参考信号。对于扩展调制的AM信号，遵循类似的过程，并且使用伪噪声码的合适的定时反向复制品对参考信号进行调制。类似的过程用于处理扩频频移键控FM信号。

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