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    • 32. 发明申请
    • Wireless Transmission System, Wireless Station Used Therein and Method Used Therefor
    • 无线传输系统,其中使用的无线站及其使用的方法
    • US20070248038A1
    • 2007-10-25
    • US11663066
    • 2005-09-26
    • Hidetoshi YamasakiHitoshi TakaiHideki NakaharaKenji Miyanaga
    • Hidetoshi YamasakiHitoshi TakaiHideki NakaharaKenji Miyanaga
    • H04Q7/00
    • H04B7/022H04W84/18
    • A wireless transmission system capable of performing a multi-station simultaneous transmission of data, that is, simultaneously transmitting data by wireless to a plurality of stations. The wireless transmission system includes a plurality of wireless stations for transmitting/receiving data and it constitutes a system for path diversity by use of a wireless station at the transmitting end, a multipath transmission path, and a wireless station at the receiving end. At least one of the plurality of wireless stations decides, in accordance with a response packet responsive to a multi-station simultaneous transmission request packet transmitted by the wireless station or other stations, a plurality of delay amounts relative to a reference timing during the multi-station simultaneous transmission in the wireless transmission system. It is arranged that each difference between the plurality of delay amounts be greater than a predetermined delay resolution and that the difference between the maximum and minimum values in the plurality of delay amounts be smaller than a predetermined maximum delay.
    • 一种无线传输系统,能够进行数据的多站同时传输,即通过无线向多个站同时发送数据。 无线传输系统包括用于发送/接收数据的多个无线站,并且它通过使用发送端的无线站,多径传输路径和接收端的无线站构成用于路径分集的系统。 所述多个无线站中的至少一个根据响应于由所述无线站或其他站发送的多站同时发送请求分组的响应分组,决定多个相对于所述多个时间段期间的基准定时的延迟量, 在无线传输系统中同时传输。 设置多个延迟量之间的每个差异大于预定延迟分辨率,并且多个延迟量中的最大值与最小值之间的差小于预定的最大延迟。
    • 33. 发明申请
    • Inter-station transmission method, radio base station monitoring method, and device using the method
    • 站间传输方法,无线基站监控方法和使用该方法的设备
    • US20070025316A1
    • 2007-02-01
    • US10575533
    • 2004-12-09
    • Hidetoshi YamasakiHitoshi Takai
    • Hidetoshi YamasakiHitoshi Takai
    • H04J3/16
    • H04W24/00
    • There is provided a new inter-station transmission method capable of extending, as compared with a conventional method, a time to be allocated for a transmission path delay of an inter-station transmission path within a predetermined turnaround time, and increasing an inter-station transmission distance as much as possible. A radio base station (20) reproduces a clock synchronized with a BSU transmission clock DCLK, the BSU transmission clock DCLK being used when transmitting downlink transmission data from a communication control station (10). Based on the reproduced clock, the radio base station (20) processes the downlink transmission data. Since this clock synchronization eliminates a necessity of data format conversion between the communication control station (10) and the radio base station (20), a buffer such as a FIFO for accumulating transmission data in preparation for the conversion is no longer necessary. Consequently, a delay time caused by the buffer in a conventional process is eliminated. This makes it possible to reduce the turnaround time of a mobile communication system. When the new inter-station transmission method is applied to dedicated short-range communications, in which the turnaround time is fixed, a physical distance between the communication control station and the radio base station can be increased by a distance that corresponds to the eliminated delay time.
    • 提供了一种新的站间传输方法,其能够与常规方法相比延长在预定的周转时间内为站间传输路径的传输路径延迟分配的时间,并且增加站间 传输距离尽可能多。 无线基站(20)再现与BSU发送时钟DCLK同步的时钟,当从通信控制站(10)发送下行链路发送数据时,使用BSU发送时钟DCLK。 基于再生时钟,无线基站(20)处理下行链路发送数据。 由于该时钟同步消除了在通信控制站(10)和无线电基站(20)之间的数据格式转换的必要性,所以不再需要用于累积传输数据的诸如FIFO之类的缓冲器。 因此,消除了由常规处理中的缓冲器引起的延迟时间。 这使得可以减少移动通信系统的周转时间。 当将新的站间传输方法应用于周转时间固定的专用短距离通信时,通信控制站与无线基站之间的物理距离可以增加与消除的延迟相对应的距离 时间。
    • 35. 发明授权
    • Wireless base station, wireless communication terminal, and wireless communication system
    • 无线基站,无线通信终端和无线通信系统
    • US08345648B2
    • 2013-01-01
    • US12504806
    • 2009-07-17
    • Tsutomu MukaiHitoshi Takai
    • Tsutomu MukaiHitoshi Takai
    • H04W48/08H04W12/08H04L12/26
    • H04H60/73H04L12/18H04L12/1845H04W4/00H04W4/06H04W76/40H04W84/12
    • A wireless communication system transmits information requested by a wireless communication terminal to the wireless communication terminal moving through a spot wireless area. In a wireless base station, an external information communication control section controls communication with a server. A contents memory stores at least a part of contents received from the server. A wireless communication section communicates with the communication terminal using a predetermined communication method. A control section establishes connection with the communication terminal using a first connection which does not require an authentication procedure, or using a second connection which requires the authentication procedure. An access control (restriction) section permits access from the communication terminal to the contents memory and prohibits access to the server when a type of connection is the first connection, and permits access from the communication terminal to the contents memory and to the server in the case of the second connection.
    • 无线通信系统将由无线通信终端请求的信息发送到移动通过无线区域的无线通信终端。 在无线基站中,外部信息通信控制部控制与服务器的通信。 内容存储器存储从服务器接收的内容的至少一部分。 无线通信部使用规定的通信方式与通信终端进行通信。 控制部分使用不需要认证过程的第一连接或使用需要认证过程的第二连接来建立与通信终端的连接。 访问控制(限制)部分允许从通信终端到内容存储器的访问,并且当连接类型是第一连接时禁止对服务器的访问,并允许从通信终端到内容存储器和服务器的访问 第二个连接的情况。
    • 36. 发明授权
    • Transmission method and transmission system
    • 传输方式和传输系统
    • US08170130B2
    • 2012-05-01
    • US11886072
    • 2006-03-24
    • Hideki NakaharaHitoshi TakaiKoichiro Tanaka
    • Hideki NakaharaHitoshi TakaiKoichiro Tanaka
    • H04B7/02
    • H04L27/206H04B7/0678
    • A transmission device includes a differential encoding section for differentially encoding transmission data, a first waveform generation section, a second waveform generation section, and two transmission antennas. A reception device includes a reception antenna, a delay detection section, and a data determination section for low-pass filtering a delay detection signal. The reception device receives modulated signals modulated by using two waveforms having low correlations with each other. Thus, regardless of the presence or absence of delay dispersion in a propagation path and even in a high-speed fading in which the propagation path varies at high speed, a transmission diversity effect can be achieved, thereby making it possible to improve transmission characteristics.
    • 传输装置包括差分编码传输数据的差分编码部分,第一波形产生部分,第二波形发生部分和两个发射天线。 接收装置包括接收天线,延迟检测部分和用于对延迟检测信号进行低通滤波的数据确定部分。 接收装置接收通过使用彼此具有低相关性的两个波形调制的调制信号。 因此,无论传播路径中是否存在延迟色散,并且即使在传播路径高速变化的高速衰落中也能够实现发送分集效果,能够提高传输特性。
    • 38. 发明授权
    • Circulative catering table
    • 循环餐桌
    • US4609092A
    • 1986-09-02
    • US584914
    • 1984-02-29
    • Hitoshi Takai
    • Hitoshi Takai
    • B65G47/76B65G47/53
    • B65G47/766
    • A circulative catering table having a counter and an endless path of travel for dishes and meals, provided in the counter, at least a bypass path of travel is provided, dishes containing therein meals, which have been transferred on a going path portion of the endless path of travel, are led to the bypass path of travel by an arm member for guide rotatably provided and having a length larger than the width of the path of travel, and subsequently, led to a returning path portion of the endless path of travel by another arm member for guide on the returning path portion, whereby a suitable circulative path is formed by the endless path of travel and the bypass path of travel.
    • 在柜台设有一个循环式餐桌,提供了一个柜台和无休止的餐具和餐饮路线,至少提供了一条旁路行走路线,其中包含餐盘的餐具,这些餐盘已经转移到无端的路径部分 行进路径通过可旋转地设置并且具有大于行进路径的宽度的长度的引导件的臂构件被引导到行走路径,并且随后被引导到环形路径的返回路径部分 另一个用于在返回路径部分上引导的臂构件,由此行进的环形路径和旁路路径形成适当的循环路径。
    • 39. 发明授权
    • Diversity reception device
    • 分集接收设备
    • US08792599B2
    • 2014-07-29
    • US13593539
    • 2012-08-24
    • Hitoshi TakaiMasaki YamaguchiMakoto Sekitoh
    • Hitoshi TakaiMasaki YamaguchiMakoto Sekitoh
    • H04B7/10H04L1/02
    • H04B7/082H04B7/0825H04B7/0874
    • The diversity reception device includes an antenna switching unit configured to select and switch to a determined chain number of antennas out of a plurality of antennas; and an antenna interchange control unit configured to control the antenna switching unit to interchange an antenna. The antenna interchange control unit compares a carrier-to-noise ratio measured by a demodulation circuit of a demodulation unit of each chain, controls the antenna switching unit to sequentially switch connection with an antenna of a chain having a lowest carrier-to-noise ratio to connection with antennas connectable to the chain, and interchanges the antenna of the chain having a lowest carrier-to-noise ratio with an antenna estimated to have a highest carrier-to-noise ratio on the basis of the input level measured by the level detection unit or an antenna having a highest input level measured by the level detection unit among the connection-switched antennas.
    • 分集接收装置包括:天线切换单元,被配置为选择并切换到多个天线中确定的链数天线; 以及天线交换控制单元,被配置为控制天线切换单元以互换天线。 天线互换控制单元比较由每个链路的解调单元的解调电路测得的载波噪声比,控制天线切换单元,以顺序切换与具有最低载波信噪比的链路的天线的连接 与可连接到链路的天线连接,并且将具有最低载波信噪比的链路的天线与估计为具有最高载波噪声比的天线基于由电平测量的输入电平互换 检测单元或由连接交换天线中的电平检测单元测量的具有最高输入电平的天线。
    • 40. 发明申请
    • WIRELESS BASE STATION AND WIRELESS COMMUNICATION TERMINAL AND WIRELESS COMMUNICATION SYSTEM
    • 无线基站和无线通信终端和无线通信系统
    • US20120331161A1
    • 2012-12-27
    • US13607931
    • 2012-09-10
    • Tsutomu MUKAIHitoshi Takai
    • Tsutomu MUKAIHitoshi Takai
    • H04W12/06
    • H04W76/10H04L61/6081H04L63/105H04L67/306H04W4/80H04W12/06H04W12/08H04W36/0016H04W40/244H04W84/12H04W88/02H04W88/06
    • Provided is a wireless communication system transmitting information to a communication terminal moving through a spot wireless area. In an integrated base station, an external information communication section controls communication with a server. A contents memory section stores contents received from the server. A wireless LAN communication section communicates with the communication terminal. A control section establishes connection with the communication terminal using a first connection not requiring an authentication procedure for connection with the communication terminal, or using a second connection requiring the authentication procedure for connection with the communication terminal. An access control (restriction) section permits access from the communication terminal to the contents memory section and prohibits access to the server when a type of connection with the communication terminal is the first connection, and permits access from the communication terminal to the contents memory section and to the server in the case of the second connection.
    • 提供了向移动通过无线区域的通信终端发送信息的无线通信系统。 在集成基站中,外部信息通信部控制与服务器的通信。 内容存储部存储从服务器接收的内容。 无线LAN通信部与通信终端进行通信。 控制部分使用不需要用于与通信终端连接的认证过程的第一连接或使用需要用于与通信终端连接的认证过程的第二连接来建立与通信终端的连接。 访问控制(限制)部分允许从通信终端访问内容存储器部分,并且当与通信终端的连接类型是第一连接时禁止对服务器的访问,并且允许从通信终端到内容存储器部分的访问 并且在第二连接的情况下到服务器。