公开(公告)号：US5093928A

公开(公告)日：1992-03-03

申请号：US555894

申请日：1990-07-20

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04W48/16

CPC分类号： H04W48/16

摘要： A channel selection system for radio communication equipment which uses a control channel for interchanging control signals for connection and a plurality of data channels for interchanging data and emits an electromagnetic wave by using any one of the data channels after determining that it is idle by carrier sensing. The system rarely selects a data channel adjoining the control channel since the probability that such a data channel is registered as an idle channel is extremely low. The system, therefore, reduces the possibility of the equipment being unable to use the control channel due to the influence of power leaking from the data channel adjoining the control channel.

公开(公告)号：US4899350A

公开(公告)日：1990-02-06

申请号：US50431

申请日：1987-05-18

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04B14/06 ,  H04M11/06

CPC分类号： H04M11/068 ,  H04B14/064

摘要： In a communication system for use in transmitting a sequence of information signals in addition to a sequence of digital voice signals subjected to adaptive delta modulation, the information signal sequence is modulated by a phase modulator (51) of the transmitter section (11a) into a phase modulated signal sequence and is combined with the digital signals by a combining circuit (15) into output signals. The phase modulated signals might be sent through an ADM decoder (36) and a switch (44) of a receiver section (12a) to a loudspeaker (45) to be reproduced together with the digital voice signals. However, such phase modulated signals are not substantially audible for listeners because the phase modulated signals scarcely comprise a low frequency component. The phase modulated signals may be binary Manchester code signals and may be either interposed in a quiescent time of the digital voice signals or placed at the end or beginning of each digital voice signal.

摘要翻译： 在用于发送经过自适应增量调制的数字语音信号序列之外的用于发送信息信号序列的通信系统中，信息信号序列由发送器部分（11a）的相位调制器（51）调制成 并通过组合电路（15）与数字信号组合成输出信号。 相位调制信号可以通过ADM解码器（36）和接收器部分（12a）的开关（44）发送到扬声器（45），以便与数字语音信号一起再现。 然而，由于相位调制信号几乎不包括低频分量，所以这样的相位调制信号对听众基本上不可听见。 相位调制信号可以是二进制曼彻斯特码信号，并且可以被插入在数字语音信号的静止时间中，或者被放置在每个数字语音信号的结束或开始处。

公开(公告)号：US4791669A

公开(公告)日：1988-12-13

申请号：US934408

申请日：1986-11-24

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04L9/18 ,  H04L9/00

CPC分类号： H04L9/0662 ,  H04L9/12 ,  H04L2209/125 ,  H04L2209/34

摘要： An encryption/decryption system for a communication channel increases the number of values for the encryption key variable without increasing the length of a cipher feedback register. This is done by providing a selector to select one from many local and prestored keys for each frame. The transmitting end has a first storage register, a first memory, a first selector, and an encrypting circuit. The encrypting circuit combines a randomized signal with the input signal to form an encrypted signal. As cipher feedback, the first storage register provides bits of the encrypted signal as addresses to the first memory, which outputs corresponding random numbers. The first selector selects from the random number data to form the coding randomized signal fed to the encrypting circuit. The receiving end has a second storage register, a second memory, a second selector, and a digital signal decoding circuit. The second storage register stores bits of a received encrypted signal and outputs them in parallel as addresses. The second memory receives these addresses and outputs corresponding random numbers. To enable decoding, the working and stored contents of the first and second memories are identical. The second selector, operating the same way that the first operates, selects from the identical random number data to form a decoding randomized signal. The decoding circuit combines the received encrypted signal with the decoding randomized signal to reproduce the input digital signal.

摘要翻译： 用于通信信道的加密/解密系统增加加密密钥变量的值的数量，而不增加密码反馈寄存器的长度。 这是通过提供一个选择器来从每个帧的许多本地和预存的密钥中选择一个。 发送端具有第一存储寄存器，第一存储器，第一选择器和加密电路。 加密电路将随机化信号与输入信号组合以形成加密信号。 作为密码反馈，第一存储寄存器提供加密信号的位作为第一存储器的地址，其输出相应的随机数。 第一选择器从随机数数据中选出，以形成馈送到加密电路的编码随机化信号。 接收端具有第二存储寄存器，第二存储器，第二选择器和数字信号解码电路。 第二存储寄存器存储接收到的加密信号的位，并且作为地址并行输出。 第二个存储器接收这些地址并输出相应的随机数。 为了进行解码，第一和第二存储器的工作和存储内容是相同的。 第二选择器以与第一操作相同的方式操作，从相同的随机数数据中选择以形成解码随机信号。 解码电路将接收到的加密信号与解码随机化信号相结合，以再现输入数字信号。

公开(公告)号：US4301539A

公开(公告)日：1981-11-17

申请号：US128787

申请日：1980-03-10

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04B3/46 ,  H04B7/01 ,  H04B17/00 ,  H04Q7/00 ,  H04B7/26

CPC分类号： H04B7/01 ,  H04B17/18 ,  H04B17/21 ,  H04B17/364

摘要： A phase shift monitoring system is provided for a mobile communication system which includes a central, or base station, one or more sub-base stations, and a plurality of mobile units. Each sub-base station is provided with a detection means which is operable to transmit an alarm signal to the base station when a predetermined tolerable phase shift is exceeded. The base station includes means for readjusting the transmission timing in order to compensate for the detected phase shift, either automatically or by manual control.

摘要翻译： 为包括中央或基站，一个或多个子基站和多个移动单元的移动通信系统提供了相移监测系统。 每个子基站设置有检测装置，当超过预定的可容许相移时，该检测装置可操作以向基站发送报警信号。 基站包括用于自动地或通过手动控制来重新调整发送定时以便补偿检测到的相移的装置。

公开(公告)号：US06272119B1

公开(公告)日：2001-08-07

申请号：US09037044

申请日：1998-03-09

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04J1300

CPC分类号： H04B7/2628

摘要： In a first CDMA communication method, a CDMA radio wave signal is transmitted at a first place (a base station). A mobile unit receives the first CDMA radio wave signal and stores at least a portion of the data in the received signal and returns it to the base station by attaching the portion of the data to second data to be transmitted through spectrum spreading, wherein the data rate of the attached data is higher than the second data. The base station detects an upward line transmission quality from the received second CDMA radio wave signal from the mobile unit and detects a downward line transmission quality from the attached data forwarded by the mobile station. The base station outputs the downward line transmission quality when the upward line transmission quality is higher than a reference. When the downward line transmission quality is lower than a reference, the data is retransmitted from the base station and for a predetermined interval in this condition, transmission is stopped as transmission controlling. In a second CDMA communication method, the downward line transmission quality is measured in the mobile station and the data of downward line transmission quality is attached in place of the forwarded data and transmission controlling is similarly provided. Corresponding base and mobile stations are also disclosed.

摘要翻译： 在第一CDMA通信方法中，CDMA无线电波信号首先被发送（基站）。 移动单元接收第一CDMA无线电波信号，并将数据的至少一部分存储在接收信号中，并通过将数据的一部分附加到要通过频谱扩展发送的第二数据而将其返回到基站，其中数据 附加数据的速率高于第二数据。 基站从接收到的来自移动单元的第二CDMA无线电波信号检测向上线路传输质量，并从移动站转发的附加数据检测下行传输质量。 当上行传输质量高于参考时，基站输出下行传输质量。 当下行传输质量低于参考时，在该条件下，从基站重发数据并且以预定间隔，作为传输控制，传输被停止。 在第二CDMA通信方法中，在移动站中测量向下行传输质量，并且附加下行传输质量的数据来代替转发的数据，并且类似地提供传输控制。 还公布了相应的基站和移动台。

公开(公告)号：US4790013A

公开(公告)日：1988-12-06

申请号：US720934

申请日：1985-04-08

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04L7/00 ,  H04L7/04 ,  H04L7/08 ,  H04J3/06 ,  H04K1/00

CPC分类号： H04L7/046 ,  H04L7/042

摘要： In a receiver responsive to an input signal comprising information signals following frame synchronization signals, respectively, frame synchronization is established by a frame synchronization pulse generator (56) with reference to both of the information signals and the frame synchronization signals. A discriminator (57) discriminates between the information signals and other spurious signals by monitoring descrambled digital signals produced by a descrambler (47) in response to the information signals or by monitoring reproduced analog signals into which the descrambled digital signals are converted by a digital to analog converter (51). The monitoring is carried out within silent parts interposed between information parts of either the descrambled digital signals or the reproduced analog signals. The information signals are discriminated either by a preselected pattern inevitably appearing in the silent parts of the descrambled digital signals or by amplitudes of the silent parts of the reproduced analog signals. Alternatively, the information signals may be discriminated by detecting the autocorrelation of the reproduced analog signals.

摘要翻译： 在响应于包括帧同步信号之后的信息信号的输入信号的接收机中，分别参照信息信号和帧同步信号两者由帧同步脉冲发生器（56）建立帧同步。 鉴别器（57）通过响应于信息信号监视由解扰器（47）产生的解扰数字信号或者通过监视再现的模拟信号来区分信息信号和其他寄生信号，通过数字将解码后的数字信号转换成 模拟转换器（51）。 在被解扰的数字信号或再现的模拟信号的信息部分之间的无声部分内进行监视。 信息信号由解扰数字信号的无声部分中不可避免地出现的预选图案或再现的模拟信号的静音部分的幅度来区分。 或者，可以通过检测再现的模拟信号的自相关来区分信息信号。

公开(公告)号：US4635298A

公开(公告)日：1987-01-06

申请号：US684824

申请日：1984-12-21

申请人： Kouzou Kage ,  Hiroshi Watanabe

发明人： Kouzou Kage ,  Hiroshi Watanabe

IPC分类号： G01R29/00 ,  H04B1/10 ,  H04B7/26 ,  H04B17/00 ,  H04B17/345 ,  H04B17/382 ,  H04Q7/28 ,  H04W24/00 ,  H04W84/08

CPC分类号： H04B7/26 ,  H04B1/1027 ,  H04B17/345

摘要： An interference wave detection circuit is designed so as to detect whether a beat due to the difference between two carrier wave frequencies is included or not in a received signal for a radio receiver. The detection circuit comprises circuitry for deriving a first binary signal corresponding to a level of a signal of voice frequency band obtained by demodulating the received signal and for deriving a second binary signal corresponding to a level of an envelope signal of an intermediate frequency signal from the received signal to provide a predetermined time difference between the first and second binary signals. The detection circuit further comprises a spoken message detection circuit for detecting that a carrier wave is modulated in a spoken message of the received signal, and a correlation detection circuit for detecting correlation between the first and second binary signals when the output of the spoken message detection circuit is not produced, thereby producing an interference detection signal when the correlation therebetween is detected.

摘要翻译： 干扰波检测电路被设计为检测在无线电接收机的接收信号中是否包括由于两个载波频率之间的差异而产生的节拍。 检测电路包括用于导出对应于通过解调所接收的信号而获得的语音频带信号的电平的第一二进制信号的电路，并且用于导出对应于来自所述接收信号的中频信号的包络信号的电平的第二二进制信号 以提供第一和第二二进制信号之间的预定时间差。 检测电路还包括用于检测在接收信号的语音消息中调制载波的语音消息检测电路，以及用于当口令消息检测的输出时检测第一和第二二进制信号之间的相关性的相关检测电路 电路不产生，从而当检测到相关性时产生干扰检测信号。

公开(公告)号：US4425548A

公开(公告)日：1984-01-10

申请号：US300346

申请日：1981-09-08

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04L25/03 ,  H03K5/08 ,  H04L25/06 ,  H03K13/32

CPC分类号： H04L25/065 ,  H04L25/063

摘要： A digital data signal is distorted by means of a low or high pass filter. Quantization of such a signal in accordance with extracted clock pulses will result in a high error rate if a fixed quantization level is utilized due to attenuated voltage swings and a low differential between the signal excursions and the quantization level. The present invention overcomes this problem by means of a shift register connected to an output of a quantization comparator which is clocked by the extracted clock pulses. A weighting circuit is connected between the shift register and one of the inputs of the comparator to suitably adjust the relative quantization level to compensate for the asymmetrical voltage swings caused by the filtering and thereby greatly reduce the data error rate.

摘要翻译： 数字数据信号通过低通或高通滤波器失真。 根据提取的时钟脉冲对这样的信号的量化将导致如果由于衰减的电压摆动而使用固定的量化电平而导致高错误率，以及在信号偏移和量化电平之间的低差分。 本发明通过连接到由提取的时钟脉冲对时钟的量化比较器的输出的移位寄存器来克服这个问题。 一个加权电路连接在移位寄存器和比较器的一个输入端之间，以适当调整相对量化电平，以补偿由滤波引起的非对称电压摆幅，从而大大降低数据错误率。

公开(公告)号：US4204170A

公开(公告)日：1980-05-20

申请号：US867410

申请日：1978-01-06

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： H04B1/10 ,  H03G11/00 ,  H03K5/08 ,  H03K5/1252 ,  H03K1/10

CPC分类号： H03G11/002 ,  H03K5/082 ,  H03K5/1252

摘要： An impulse noise limiter circuit comprises a delay circuit for delaying a signal containing impulse noise and a clamp circuit provided between the input and output terminals of the delay circuit for limiting the voltage difference between the terminals to a given value.

摘要翻译： 脉冲噪声限制器电路包括用于延迟包含脉冲噪声的信号的延迟电路和设置在延迟电路的输入和输出端之间的钳位电路，用于将端子之间的电压差限制到给定值。

公开(公告)号：US4204164A

公开(公告)日：1980-05-20

申请号：US930837

申请日：1978-08-03

申请人： Kouzou Kage

发明人： Kouzou Kage

IPC分类号： G01R29/26 ,  H03G3/34 ,  H04B1/10 ,  H04L27/00

CPC分类号： H04B1/10 ,  H03G3/342 ,  H03G3/344

摘要： A noise detector circuit for radio receivers is disclosed. The circuit includes a delay circuit for slightly delaying a received signal. A comparator compares the level of the received signal with the delayed signal to generate a pulse sequence having a number of pulses per unit that is proportional to the level of said noise. A counter counts the number of pulses to detect the level of the noise in the received signal.

摘要翻译： 公开了一种用于无线电接收机的噪声检测器电路。 电路包括用于稍微延迟接收信号的延迟电路。 比较器将接收信号的电平与延迟的信号进行比较，以产生具有与每个噪声的电平成比例的每单位脉冲数的脉冲序列。 计数器对接收到的信号中的噪声电平进行计数。