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. 发明申请

US20070274256A1 Systems and methods for wireless communication 有权
标题翻译：用于无线通信的系统和方法
公开(公告)号：US20070274256A1
公开(公告)日：2007-11-29
申请号：US11797321
申请日：2007-05-02
申请人： Shinji Murai , Tomoaki Ishifuji , Takashi Yano , Masaaki Shida , Shigenori Hayase
发明人： Shinji Murai , Tomoaki Ishifuji , Takashi Yano , Masaaki Shida , Shigenori Hayase
IPC分类号： H04Q7/00
CPC分类号： H04W72/085 , H04W28/18 , H04W72/046
摘要： In a wireless communication system for communicating with a plurality of stations at the same point of time with the same frequency using a Space Division Multiple Access (SDMA), wireless resources are allocated by a first decision unit which evaluates performance of each station obtained when the SDMA is used and which determines periods of time to be allocated to groups of stations formed according to the SDMA technique. Using a first evaluation unit and a second evaluation unit to evaluate performance required by each station and each application, the first decision unit allocates the wireless resources to the stations. It is therefore possible that the wireless resources are efficiently allocated to the stations while preventing an event in which the wireless resources are excessive or insufficient for required quality of service.
摘要翻译：在用于使用空分多址（SDMA）以相同频率在同一时间点与多个站进行通信的无线通信系统中，无线资源由第一决策单元分配，该第一决策单元评估当使用SDMA，并确定要分配给根据SDMA技术形成的站组的时间段。使用第一评估单元和第二评估单元来评估每个站点和每个应用所需的性能，第一决策单元向站点分配无线资源。因此，可以将无线资源有效地分配给站，同时防止无线资源过多或不足以满足所需服务质量的事件。

2. 发明授权

US06963269B2 Contactless IC card 失效
标题翻译：非接触式IC卡
公开(公告)号：US06963269B2
公开(公告)日：2005-11-08
申请号：US10403280
申请日：2003-04-01
申请人： Takeshi Saitoh , Masaaki Shida , Tomoaki Ishifuji
发明人： Takeshi Saitoh , Masaaki Shida , Tomoaki Ishifuji
IPC分类号： G06K17/00 , G06K19/07 , H04B5/02 , H04Q5/22 , G05F3/02 , H03L7/06
CPC分类号： G06K19/0713 , G06K19/0723
摘要： A contactless IC card having an antenna, a transmit/receive circuit for recovering data (clock) and electric power from a carrier signal received by the antenna, a logic circuit operated with the electric power supplied thereto from the transmit/receive circuit, and a memory. The transmit/receive circuit has a rectifier circuit for outputting data (clock) and rectifier circuits for electric power in such a manner that the carrier signal is inputted to each of the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. With this configuration, high frequency matching can be optimized separately for the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. It is also possible to separately optimize adjustments to a voltage of recovered data (clock) and a recovered supply voltage.
摘要翻译：一种具有天线的非接触IC卡，用于从由天线接收的载波信号中恢复数据（时钟）和电力的发射/接收电路，由从发射/接收电路提供给其的电力操作的逻辑电路，以及记忆。发送/接收电路具有用于输出数据（时钟）和电力整流电路的整流电路，使得载波信号输入到用于输出数据（时钟）的整流电路和用于电力的整流电路。通过这种配置，可以分别为用于输出数据（时钟）的整流电路和用于电力的整流电路优化高频匹配。还可以单独优化对恢复的数据（时钟）的电压和恢复的电源电压的调整。

3. 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。

4. 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。

5. 发明授权

US06570490B1 Contactless IC card 失效
公开(公告)号：US06570490B1
公开(公告)日：2003-05-27
申请号：US09079272
申请日：1998-05-15
申请人： Takeshi Saitoh , Masaaki Shida , Tomoaki Ishifuji
发明人： Takeshi Saitoh , Masaaki Shida , Tomoaki Ishifuji
IPC分类号： G06K19067
CPC分类号： G06K19/0713 , G06K19/0723
摘要： A contactless IC card having an antenna, a transmit/receive circuit for recovering data (clock) and electric power from a carrier signal received by the antenna, a logic circuit operated with the electric power supplied thereto from the transmit/receive circuit, and a memory. The transmit/receive circuit has a rectifier circuit for outputting data (clock) and rectifier circuits for electric power in such a manner that the carrier signal is inputted to each of the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. With this configuration, high frequency matching can be optimized separately for the rectifier circuit for outputting data (clock) and the rectifier circuit for electric power. It is also possible to separately optimize adjustments to a voltage of recovered data (clock) and a recovered supply voltage.

6. 发明授权

US06527177B1 Automatic identification equipment and IC cards 失效
公开(公告)号：US06527177B1
公开(公告)日：2003-03-04
申请号：US09512325
申请日：2000-02-24
申请人： Tomoaki Ishifuji , Masaaki Shida
发明人： Tomoaki Ishifuji , Masaaki Shida
IPC分类号： G06K500
CPC分类号： G07F7/1008 , G06Q20/341 , G06Q20/3576 , G07C9/00111
摘要： In a conventional method which defines an authentication key for each record, as the number of the records is increased in an access right management for records in a memory of an IC card, the number of the types of authentication keys is also increased to require a larger memory area for storing the authentication keys, thus causing lower memory efficiency. In order to solve such a problem, terminal types (ex. “0H”-“7H”) are defined for interrogators, so that only the number of authentication keys equal to the number of the terminal types are stored. Each record has the number of access permission bits equal to the number of the terminal types, and specifies terminal types, to which an access is permitted, by setting the bits ON or OFF.

7. 发明授权

US08310995B2 Systems and methods for wireless communication using SDMA 有权
标题翻译：使用SDMA进行无线通信的系统和方法
公开(公告)号：US08310995B2
公开(公告)日：2012-11-13
申请号：US11797321
申请日：2007-05-02
申请人： Shinji Murai , Tomoaki Ishifuji , Takashi Yano , Masaaki Shida , Shigenori Hayase
发明人： Shinji Murai , Tomoaki Ishifuji , Takashi Yano , Masaaki Shida , Shigenori Hayase
IPC分类号： H04W4/00
CPC分类号： H04W72/085 , H04W28/18 , H04W72/046
摘要： In a wireless communication system for communicating with a plurality of stations at the same point of time with the same frequency using a Space Division Multiple Access (SDMA), wireless resources are allocated by a first decision unit which evaluates performance of each station obtained when the SDMA is used and which determines periods of time to be allocated to groups of stations formed according to the SDMA technique. Using a first evaluation unit and a second evaluation unit to evaluate performance required by each station and each application, the first decision unit allocates the wireless resources to the stations. It is therefore possible that the wireless resources are efficiently allocated to the stations while preventing an event in which the wireless resources are excessive or insufficient for required quality of service.
摘要翻译：在用于使用空分多址（SDMA）以相同频率在同一时间点与多个站进行通信的无线通信系统中，无线资源由第一决策单元分配，该第一决策单元评估当使用SDMA，并确定要分配给根据SDMA技术形成的站组的时间段。使用第一评估单元和第二评估单元来评估每个站点和每个应用所需的性能，第一决策单元向站点分配无线资源。因此，可以将无线资源有效地分配给站，同时防止无线资源过多或不足以满足所需服务质量的事件。

8. 发明授权

US07660288B2 Radio communication device 失效
标题翻译：无线通信设备
公开(公告)号：US07660288B2
公开(公告)日：2010-02-09
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： H04J1/00
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。

9. 发明授权

US06675007B2 Charging method and terminal equipment in the information and communication network system 失效
标题翻译：信息通信网络系统中的充电方法和终端设备
公开(公告)号：US06675007B2
公开(公告)日：2004-01-06
申请号：US10061306
申请日：2002-02-04
申请人： Tsuyoshi Tamaki , Masaaki Shida , Tomoaki Ishifuji , Nobukazu Doi , Kazuko Hamaguchi
发明人： Tsuyoshi Tamaki , Masaaki Shida , Tomoaki Ishifuji , Nobukazu Doi , Kazuko Hamaguchi
IPC分类号： H04M1100
CPC分类号： H04W4/24 , H04L12/14 , H04L12/1496 , H04W40/246 , H04W40/248 , H04W40/28 , H04W84/04 , H04W84/18 , H04W88/02 , H04W88/04 , H04W88/06
摘要： A charging system for use in a network composed of wireless terminals with a repeater function. As each terminal with a repeater function receives a communication session start request from a user terminal, it searches for a destination user terminal; when it finds the destination user terminal, it transfers the signal sent from the requesting user terminal to the destination user terminal without the mediation of base stations. The information about the amount of data thus transferred or communication time for transferring data is sent to the charging system which is under the control of the communications service provider concerned.
摘要翻译：一种用于由具有中继器功能的无线终端组成的网络中的计费系统。当具有中继器功能的每个终端从用户终端接收通信会话开始请求时，它搜索目的用户终端; 当找到目的地用户终端时，它将从请求用户终端发送的信号传送到目的用户终端，而无需基站的中介。关于如此传送的数据量的信息或用于传送数据的通信时间的信息被发送到由相关通信服务提供商控制的计费系统。

10. 发明授权

US06508400B1 Automatic identification equipment and IC cards 失效
标题翻译：自动识别设备和IC卡
公开(公告)号：US06508400B1
公开(公告)日：2003-01-21
申请号：US09499024
申请日：2000-02-07
申请人： Tomoaki Ishifuji , Masaaki Shida
发明人： Tomoaki Ishifuji , Masaaki Shida
IPC分类号： G06K500
CPC分类号： G07F7/1008 , G06Q20/341 , G06Q20/3576 , G07C9/00111
摘要： In a conventional method which defines an authentication key for each record, as the number of the records is increased in an access right management for records in a memory of an IC card, the number of the types of authentication keys is also increased to require a larger memory area for storing the authentication keys, thus causing lower memory efficiency. In order to solve such a problem, terminal types (ex. “0H”-“7H”) are defined for interrogators, so that only the number of authentication keys equal to the number of the terminal types are stored. Each record has the number of access permission bits equal to the number of the terminal types, and specifies terminal types, to which an access is permitted, by setting the bits ON or OFF.
摘要翻译：在定义每个记录的认证密钥的传统方法中，随着用于在IC卡的存储器中的记录的访问权限管理中的记录数量增加，认证密钥的类型的数量也增加，以要求用于存储认证密钥的较大存储区域，从而导致较低的存储器效率。为了解决这样的问题，定义了询问器的终端类型（例如“0H”〜“7H”），仅存储与终端类型数相等的认证密钥的数量。每个记录具有等于终端类型数量的访问许可位数，并且通过将位设置为ON或OFF来指定允许访问的终端类型。

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