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公开(公告)号：US5875183A
公开(公告)日：1999-02-23
申请号：US772872
申请日：1996-12-26
申请人： Kazuhiko Nitadori
发明人： Kazuhiko Nitadori
CPC分类号： G08G1/096716 , G01S5/12 , G08G1/096741 , G08G1/096775 , H04W64/00
摘要： A mobile communication system is provided which serves as an information infrastructure capable of providing intelligent information transmission and services. A mobile station on each vehicle traveling on a road includes first and second transceivers for carrying out radio communications with a third transceiver of a base station installed on a roadside. The first transceiver of a first mobile station is linked not only with the third transceiver of the base station through a first communication channel, but is also linked with the second transceiver of a second mobile station via a second communication channel. The first mobile station carries out information communications with the base station using the first communication channel, and at the same time with the second mobile station via the second communication channel. The first, second and third transceivers each have the function of measuring the incoming direction of the radio wave from the party, and calculating the distance to the party so that the location of each mobile station is identified in each station.
摘要翻译： 提供了能够提供智能信息传输和服务的信息基础设施的移动通信系统。 在道路上行驶的每个车辆上的移动台包括用于与安装在路边的基站的第三收发器进行无线电通信的第一和第二收发器。 第一移动台的第一收发器不仅通过第一通信信道与基站的第三收发器相连，而且还经由第二通信信道与第二移动台的第二收发器相连。 第一移动站使用第一通信信道与基站进行信息通信，并且经由第二通信信道与第二移动台同时进行信息通信。 第一，第二和第三收发机各自具有测量来自该方的无线电波的输入方向的功能，并且计算到该方的距离，使得每个移动站的位置在每个站中被识别。
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公开(公告)号：US4237737A
公开(公告)日：1980-12-09
申请号：US941472
申请日：1978-09-12
申请人： Kazuhiko Nitadori
发明人： Kazuhiko Nitadori
CPC分类号： G10K11/346 , G01N29/0609 , G01S15/8913 , G01S15/8925 , G01N2291/02854
摘要： An ultrasonic imaging system is provided for forming an orthographic and a tomographic image of an object. The system comprises a receiving transducer array having a plurality of elements positioned at the lattice points of a parallelogram and a transmitting transducer array having a plurality of elements arranged in a straight line parallel to one side of the parallelogram at a period equivalent to the length of the side. A receiving beam former compensates for the delay time of the received signal for each element in the receiving transducer array and adds the compensated signals for all the elements. The receiving beam former comprises a quadrature demodulator which decomposes the output of a receiving transducer element into the inphase component and the quadrature component of a transmitting carrier signal. The beam former also includes means for delaying the components, means for performing the complex multiplication of the delayed components, means for adding the real parts of the output of the complex multiplication means for all channels, means for adding the imaginary parts of the output of the complex multiplication means for all channels, a pair of square circuits for providing the square of the real sum and the imaginary sum respectively, and an adder for adding the outputs of the square circuits. Further, means are provided for extracting the received beams in accordance with the timing of the transmitted beam and are provided for displaying the extracted received beams thereby forming an image.
摘要翻译： 提供超声成像系统用于形成物体的正射和断层图像。 该系统包括接收换能器阵列，其具有位于平行四边形的格子点处的多个元件和发射换能器阵列，该发射换能器阵列具有以与平行四边形的一侧平行的直线排列的多个元件， 旁边。 接收波束成形器补偿接收换能器阵列中每个元件的接收信号的延迟时间，并且将所有元件的补偿信号相加。 接收波束形成器包括正交解调器，其将接收换能器元件的输出分解成同相分量和发射载波信号的正交分量。 波束成形器还包括用于延迟分量的装置，用于执行延迟分量的复数乘法的装置，用于将所有通道的复数乘法装置的输出的实部相加的装置，用于将所有信道的虚部的虚部相加 所有通道的复数乘法装置分别用于提供实数和虚数和的和的平方的一对平方电路和用于相加平方电路的输出的加法器。 此外，提供了用于根据发射波束的定时提取接收的波束的装置，并且被提供用于显示所提取的接收波束，从而形成图像。
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公开(公告)号：US4220969A
公开(公告)日：1980-09-02
申请号：US934058
申请日：1978-08-15
申请人： Kazuhiko Nitadori
发明人： Kazuhiko Nitadori
CPC分类号： G01S7/298 , G01S7/5206 , G01S7/531
摘要： There is disclosed a visual scan converter which accepts digitalized video data in a polar coordinates system from a source such as a radar receiver, a sonar, or an ultrasonic imaging system, and converts the data format to make it suitable for presentation on a cathode ray tube in a standard television or other orthogonal raster at flicker free rates. The input data in a polar coordinates system is first stored in a digital memory, which is read with the orthogonal coordinates system. In reading said digital memory, an orthogonal address generated by a raster address generator is converted to a polar address, which is applier applied to said digital memory. An interpolation is performed for the outputs of the digital memory.
摘要翻译： 公开了一种视觉扫描转换器，其从诸如雷达接收器，声纳或超声波成像系统的源接收极坐标系统中的数字化视频数据，并且转换数据格式使其适合于在阴极射线 以标准电视或其他正交光栅以无闪烁速率管。 首先将极坐标系中的输入数据存储在数字存储器中，该数字存储器用正交坐标系读出。 在读取所述数字存储器时，由光栅地址生成器生成的正交地址被转换为极地址，该地址是应用于所述数字存储器的施加器。 对数字存储器的输出执行内插。
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公开(公告)号：US4053713A
公开(公告)日：1977-10-11
申请号：US654340
申请日：1976-02-02
申请人： Kazuhiko Nitadori
发明人： Kazuhiko Nitadori
CPC分类号： H04L5/06
摘要： The sum and difference signals of a pair of data channels are applied to a pair of roll-off filters, respectively. The outputs of said roll-off filters are modulated by a pair of carrier signals which have the phase difference (.pi./2) to each other. The modulated signals are added to each other in an adder and a single output signal is provided from the output of said adder. Said output signal and another output signal relating to another pair of data channels, and some pilot signals are applied to an adder, the output of which is transmitted to a receiving station in the form of a multi-channel multiplex data signal. At the receiving station, the received signal is demodulated with the inverse process of the above modulation steps and the demodulated data signals are applied to an automatic equalizer. The present invention described above provides high speed data transmission through a narrow-band-line which has only almost the Nyquist band width.
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