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21. 发明授权

US06865394B2 Location detection method, location detection system and location detection program 失效
标题翻译：位置检测方法，位置检测系统和位置检测程序
公开(公告)号：US06865394B2
公开(公告)日：2005-03-08
申请号：US10050856
申请日：2002-01-18
申请人： Atsushi Ogino , Mikio Kuwahara , Tomoaki Ishifuji
发明人： Atsushi Ogino , Mikio Kuwahara , Tomoaki Ishifuji
IPC分类号： G01S1/02 , G01S5/14 , G01S19/25 , H04Q7/20
CPC分类号： G01S1/022 , G01S5/14
摘要： A positioning method, which is related to a technique to measure a correct position of a terminal by preventing time required for the position measurement, of calculating a position of a receiver according to signals from a plurality of wireless transmitters includes a first step of measuring propagation delay time of the signal from each of the wireless transmitters and calculating a position of the receiver and a standard deviation about measuring distance error, a second step of calculating a positioning error of the receiver a third step of determining, according to the positioning error calculated by the second step, wireless transmitters in directions nearer to a direction in which the positioning error is large, and a fourth step of re-detecting signals from the wireless transmitters determined by the third step and thereby re-calculating the position of the receiver.
摘要翻译：与通过防止位置测量所需的时间来测量终端的正确位置的技术相关的定位方法根据来自多个无线发射机的信号来计算接收机的位置的步骤包括：测量传播的第一步骤来自每个无线发射机的信号的延迟时间和计算接收机的位置以及关于测量距离误差的标准偏差;计算接收机的定位误差的第二步骤，第三步骤，根据所计算出的定位误差通过第二步骤，在更靠近定位误差大的方向的方向上的无线发射机，以及重新检测由第三步骤确定的无线发射机的信号，从而重新计算接收机的位置的第四步骤。

22. 发明授权

US06459402B1 Method for measuring distance and position using spectrum signal, and an equipment using the method 有权
标题翻译：使用频谱信号测量距离和位置的方法，以及使用该方法的设备
公开(公告)号：US06459402B1
公开(公告)日：2002-10-01
申请号：US09640018
申请日：2000-08-17
申请人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
发明人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
IPC分类号： G01S1308
CPC分类号： G01S5/0215 , G01S1/026 , G01S1/045 , G01S5/10 , H04B1/70755 , H04B2201/70715
摘要： Under a multi-path environment, the receive timing for an incoming wave of the minimum propagation delay time cannot be accurately measured in the prior art. By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation section 105, the first threshold value timing detection section 103 selects only the earliest receive timing exceeding the first threshold value, from all the timings that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold value 331 received from the second threshold value calculation section 107, the reference timing calculation section 106 selects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by a previously set timing behind said reference timing is sent from the receive timing calculation section 108 as the receive timing 113 of the incoming wave of the minimum propagation delay time.
摘要翻译：在多路径环境下，在现有技术中不能精确地测量最小传播延迟时间的入射波的接收定时。通过使用从第一阈值计算部105接收到的延迟分布创建部102和第一阈值330所产生的延迟分布，第一阈值定时检测部103从全部仅选择超过第一阈值的最早的接收定时延迟分布中的相关值变为最大的定时。通过使用从第二阈值计算部107接收的接收定时和第二阈值331，基准定时计算部106选择计算最小传播延迟时间的入射波的接收定时所需的基准定时。从接收定时计算部108发送作为最小传播延迟时间的输入波的接收定时113延迟的参考定时之后的先前设定的定时的定时。

23. 发明授权

US06456830B2 Diversity wireless communication method and its wireless communication apparatus 失效
公开(公告)号：US06456830B2
公开(公告)日：2002-09-24
申请号：US09930977
申请日：2001-08-17
申请人： Atsushi Ogino , Hideya Suzuki , Tomoaki Ishifuji
发明人： Atsushi Ogino , Hideya Suzuki , Tomoaki Ishifuji
IPC分类号： H04B106
CPC分类号： H03M13/132 , H03M13/15 , H04B7/022 , Y02D70/21 , Y02D70/442
摘要： In the conventional diversity reception, information included in each non-selected signal does not contribute to an improvement in the reliability of communications, and transmitting power has been dissipated to satisfy required communication quality. Owing to the setting of encoding in respective base stations to injection, signals each including the same contents, which are received by a mobile station, are used for increasing the reliability of communications without depending on the number of the signals which were capable of being received by the mobile station, to thereby reduce transmitting power for satisfying required communication quality.

24. 发明授权

US6014406A Frequency-hopped wireless communication system and mobile wireless terminal 失效
标题翻译：无线跳频无线通信系统和移动无线终端
公开(公告)号：US6014406A
公开(公告)日：2000-01-11
申请号：US637175
申请日：1996-04-24
申请人： Masaaki Shida , Tomoaki Ishifuji , Masato Hirai , Hidehiko Jusa , Takaharu Aoyama , Kenichiro Orita
发明人： Masaaki Shida , Tomoaki Ishifuji , Masato Hirai , Hidehiko Jusa , Takaharu Aoyama , Kenichiro Orita
IPC分类号： H04B7/26 , H04L12/28 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04W88/08 , H04B1/7156 , H04B7/2621 , H04W84/12 , H04W84/20 , H04W88/06
摘要： A frequency-hopped mobile communication system is disclosed, in which a mobile wireless station automatically becomes a base station in accordance with the surrounding conditions, thereby automatically reconfiguring a communication network. A control frame is generated by at least one master station, and frequencies are hopped by a plurality of slave stations in accordance with the control frame. Each slave station switches the master thereof to be tracked, in accordance with the receiving conditions of the control frame and the relation between the control frame received from the master station and the status of the slave station and decides in which mode, master station or slave station, the slave station is to operate. The cells are thus automatically reconfigured.
摘要翻译：公开了一种跳频移动通信系统，其中移动无线站根据周围环境自动成为基站，从而自动重新配置通信网络。控制帧由至少一个主站产生，并且根据控制帧由多个从站跳频。每个从站根据控制帧的接收条件和从主站接收到的控制帧与从站的状态之间的关系切换要跟踪的主站，并决定主站或从站的模式车站，从站正在运行。因此，这些单元被自动重新配置。

25. 发明授权

US5537414A Method of wireless communication between base station and mobile station and multiple access communication system 失效
标题翻译：基站与移动台和多址通信系统之间的无线通信方法
公开(公告)号：US5537414A
公开(公告)日：1996-07-16
申请号：US87080
申请日：1993-07-07
申请人： Yoshihiro Takiyasu , Eiichi Amada , Hidehiko Jusa , Tomoaki Ishifuji , Shuichi Adachi , Genichi Ishii
发明人： Yoshihiro Takiyasu , Eiichi Amada , Hidehiko Jusa , Tomoaki Ishifuji , Shuichi Adachi , Genichi Ishii
IPC分类号： H04Q7/38 , H04B7/26 , H04J3/16 , H04L12/28 , H04Q1/30 , H04Q3/58
CPC分类号： H04B7/2656 , H04J3/1694
摘要： In a communication system having a base station for controlling a transmission right and a plurality of substations, a substation having data to be transmitted transmits the number of necessary fragments and its address to a request field of a communication frame. The base station uses a plurality pair of fragment slots and reply slots following the request field in the communication frame to transmit an address of a substation permitted to transmit data, to each fragment slot. The substation permitted to transmit data transmits the address of a destination substation and the data to a predetermined field following the address in one fragment slot. The destination station transmits a reply signal indicating the reception state of the data to the reply slot paired with the fragment slot. If the base station detects from the reply signal that the destination station failed in receiving the data, the base station instead of the substation first transmitted the data transmits the destination address and data received at the fragment slot to the next fragment slot.
摘要翻译：在具有用于控制发送权限的基站和多个变电站的通信系统中，具有要发送的数据的变电站将通信帧的请求字段的必要片段数及其地址发送。基站使用通信帧中的请求字段之后的多对片段时隙和应答时隙，将允许发送数据的子站的地址发送到每个片段时隙。允许发送数据的变电站将目的地变电站的地址和数据发送到在一个分段时隙中的地址之后的预定字段。目的站将表示数据的接收状态的应答信号发送到与分段时隙配对的应答时隙。如果基站从应答信号中检测到目的站在接收数据失败，则基站而不是先发送数据的分站将目的地址和在分片时隙接收到的数据发送到下一个分片时隙。

26. 发明授权

US07969347B2 Method for measuring distance and position using spread spectrum signal, and an equipment using the method 有权
标题翻译：使用扩频信号测量距离和位置的方法，以及使用该方法的设备
公开(公告)号：US07969347B2
公开(公告)日：2011-06-28
申请号：US12651780
申请日：2010-01-04
申请人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
发明人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
IPC分类号： G01S13/08 , G01S13/00
CPC分类号： G01S5/0215 , G01S1/026 , G01S1/045 , G01S5/10 , H04B1/70755 , H04B2201/70715
摘要： By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation 105, the first threshold value timing detection section 103 selects only the earliest receive timing exceeding the first threshold value, from all the timing that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold value 331 received from the second threshold value calculation section 107, reference timing calculation section 106 selects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by previously set timing behind said reference timing is sent from receive timing calculation section 108 as the receive timing 113 of the incoming wave of the minimum propagation delay time.
摘要翻译：通过使用由延迟分布创建部102创建的延迟分布和从第一阈值计算105接收到的第一阈值330，第一阈值定时检测部103仅从超过第一阈值的时间选择最早的接收定时定时延迟分布中的相关值变为最大值。通过使用从第二阈值计算部107接收到的接收定时和第二阈值331，基准定时计算部106选择计算最小传播延迟时间的入射波的接收定时所需的基准定时。从接收定时计算部108发送作为最小传播延迟时间的输入波的接收定时113的从基准定时之后预先设定的定时延迟的定时。

27. 发明授权

US07663532B2 Method for measuring distance and position using spread spectrum signal, and an equipment using the method 失效
标题翻译：使用扩频信号测量距离和位置的方法，以及使用该方法的设备
公开(公告)号：US07663532B2
公开(公告)日：2010-02-16
申请号：US11976979
申请日：2007-10-30
申请人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
发明人： Katsuhiko Tsunehara , Nobukazu Doi , Mikio Kuwahara , Tomoaki Ishifuji
IPC分类号： G01S13/08 , G01S13/00
CPC分类号： G01S5/0215 , G01S1/026 , G01S1/045 , G01S5/10 , H04B1/70755 , H04B2201/70715
摘要： By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation 105, the first threshold value timing detection section 103 selects only the earliest receive timing exceeding the first threshold value, from all the timing that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold value 331 received from the second threshold value calculation section 107, reference timing calculation section 106 selects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by previously set timing behind said reference timing is sent from receive timing calculation section 108 as the receive timing 113 of the incoming wave of the minimum propagation delay time.
摘要翻译：通过使用由延迟分布创建部102创建的延迟分布和从第一阈值计算105接收到的第一阈值330，第一阈值定时检测部103仅从超过第一阈值的时间选择最早的接收定时定时延迟分布中的相关值变为最大值。通过使用从第二阈值计算部107接收到的接收定时和第二阈值331，基准定时计算部106选择计算最小传播延迟时间的入射波的接收定时所需的基准定时。从接收定时计算部108发送作为最小传播延迟时间的输入波的接收定时113的从基准定时之后预先设定的定时延迟的定时。

28. 发明授权

US07319684B2 System and method for wireless communication using a management server and access points 有权
标题翻译：使用管理服务器和接入点进行无线通信的系统和方法
公开(公告)号：US07319684B2
公开(公告)日：2008-01-15
申请号：US10449100
申请日：2003-06-02
申请人： Tsuyoshi Tamaki , Takashi Yano , Takaki Uta , Tomoaki Ishifuji
发明人： Tsuyoshi Tamaki , Takashi Yano , Takaki Uta , Tomoaki Ishifuji
IPC分类号： H04B7/212 , H04B7/00 , H04J3/06
CPC分类号： H04W52/243 , H04L41/00 , H04W16/28 , H04W28/14 , H04W72/1231 , H04W74/0816
摘要： A system and method are provided for wireless communication. In one example, a wireless communication system that enhances total system throughput is provided. The system performs parallel data transmission from a plurality of access points to a plurality of user terminals. On terminals with power control function, their transmit power can be set to minimize interference. The wireless communication system comprises a management server which performs centralized management of time of access-point-to-terminal packet transmission, access points, and user terminals that perform data transmission, according to transmission time control information from the management server. Transmit queues for measuring downlink traffic and receive queues for measuring uplink traffic are provided on the access points or the management server. The system determines uplink and downlink periods from the transmit and receive queue lengths. The system also controls the access points and user terminals to transmit for the determined periods. Consequently, packet collision due to transmission from a terminal that interferes with neighboring terminals is eliminated. Thus, system throughput is enhanced.
摘要翻译：提供了一种用于无线通信的系统和方法。在一个示例中，提供了增强总系统吞吐量的无线通信系统。系统执行从多个接入点到多个用户终端的并行数据传输。在具有电源控制功能的终端上，可以设置其发射功率以最小化干扰。无线通信系统包括管理服务器，其根据来自管理服务器的传输时间控制信息，对接入点到终端分组传输的时间进行集中管理，接入点和执行数据传输的用户终端。在接入点或管理服务器上提供用于测量下行链路流量的发送队列和用于测量上行链路流量的接收队列。系统从发送和接收队列长度确定上行链路和下行链路周期。系统还控制接入点和用户终端在确定的时间段内进行传输。因此，消除了来自与邻近终端干扰的终端的传输的分组冲突。因此，提高了系统吞吐量。

29. 发明申请

US20070086400A1 Radio communication device 失效
标题翻译：无线通信设备
公开(公告)号：US20070086400A1
公开(公告)日：2007-04-19
申请号：US11493556
申请日：2006-07-27
申请人： Masaaki Shida , Shigenori Hayase , Tomoaki Ishifuji
发明人： Masaaki Shida , Shigenori Hayase , Tomoaki Ishifuji
IPC分类号： H04Q7/24
CPC分类号： H04L27/2649 , H04B7/0417 , H04B7/0626 , H04L25/0204 , H04L27/2657 , H04L27/2662 , H04L2025/03426 , H04L2027/0024
摘要： Disclosed is a wireless communication system capable of performing demodulation at the receiving side without substantially deteriorating BER characteristics, regardless of carrier frequency error existing among plural wireless communication systems in SDMA of uplink. The wireless communication system includes plural antennas; a MIMO processor that decomposes a reception signal the plural antennas received from plural transmitters into transmission signals transmitted from the respective transmitters; a FFT processor that carries out OFDM demodulation; and a demapping unit that obtains data from signals which were previously converted into sub-carrier signals by the FFT processor, in which the MIMO processor is installed ahead of the FFT processor for sake of the processing sequence of a receive signal, and even though a carrier frequency offset exists in the reception signal MIMO processing is performed prior to OFDM demodulation to split the reception signal from plural transmitters.
摘要翻译：公开了无论在上行链路的SDMA中的多个无线通信系统中存在的载波频率误差如何，都能够在接收侧进行解调而不使BER特性实质恶化的无线通信系统。无线通信系统包括多个天线; 将从多个发射机接收的多个天线的接收信号分解为从各个发射机发射的传输信号的MIMO处理器; 执行OFDM解调的FFT处理器; 以及解映射单元，其通过FFT处理器从先前被转换为子载波信号的信号获得数据，其中为处理接收信号的处理顺序而将MIMO处理器安装在FFT处理器之前，并且即使载波频率偏移存在于接收信号中，在OFDM解调之前执行MIMO处理，以分割来自多个发射机的接收信号。

30. 发明授权

US07116709B2 Communication method of contactless ID card and integrated circuit used in communication method 失效
标题翻译：通信方法中使用的非接触式ID卡和集成电路的通信方法
公开(公告)号：US07116709B2
公开(公告)日：2006-10-03
申请号：US10860324
申请日：2004-06-04
申请人： Satoshi Tanaka , Tomoaki Ishifuji , Kenji Nagai , Katsuhiro Furukawa
发明人： Satoshi Tanaka , Tomoaki Ishifuji , Kenji Nagai , Katsuhiro Furukawa
IPC分类号： H03K7/04
CPC分类号： G06K7/0008 , H04L25/4904
摘要： The code system is realized by that a plurality of waveforms A and B each having duty ratios of 50% in which only any one of a rising edge and a falling edge is present are combined with each other, and “1” and “0” are allocated to the combined waveform. In accordance with the present invention, both a clock and data can be transmitted at the same time, and can be readily demodulated without using a complex PLL circuit. As a trial manufacture according to the present invention, the demodulator could be realized which could allow variations contained in an input frequency by more than 1 digit under operating voltage of 2 V. The effectiveness of this patent could be confirmed.
摘要翻译：代码系统是通过以下方式实现的：每个具有占空比为50％的多个波形A和B，其中仅存在上升沿和下降沿中的任何一个，“1”和“0” 被分配给组合波形。根据本发明，可以同时发送时钟和数据，并且可以容易地解调而不使用复合PLL电路。作为根据本发明的试制，可以实现解调器，其可以在2V的工作电压下允许输入频率中包含的变化大于1位。可以确认该专利的有效性。

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