公开(公告)号：US5754947A

公开(公告)日：1998-05-19

申请号：US404047

申请日：1995-03-14

申请人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

发明人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

IPC分类号： H04B7/24 ,  H04B7/26 ,  H04L12/28 ,  H04W4/00 ,  H04W28/00 ,  H04W74/08 ,  H04W84/12

CPC分类号： H04W74/0816 ,  H04L1/188 ,  H04W76/02 ,  H04L1/1877

摘要： A radio communication method for transmitting and receiving data between a first terminal and a second terminal comprises the following two steps. A step of establishing a connection between the first terminal and the second terminal when the first terminal and the second terminal have detected that a signal has not been transmitted on a predetermined channel, and the other step of starting data communications between the first terminal and the second terminal which have established the connection, and transmitting the predetermined signal on the predetermined channel from both the first terminal and the second terminal throughout the data communications.

摘要翻译： 一种用于在第一终端和第二终端之间发送和接收数据的无线电通信方法包括以下两个步骤。 当第一终端和第二终端已经检测到在预定信道上没有发送信号时，建立第一终端和第二终端之间的连接的步骤，以及开始第一终端和第二终端之间的数据通信的另一步骤 已经建立了连接的第二终端，并且在整个数据通信中从第一终端和第二终端在预定信道上发送预定信号。

公开(公告)号：US5884171A

公开(公告)日：1999-03-16

申请号：US852185

申请日：1997-05-06

申请人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

发明人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

IPC分类号： H04B7/24 ,  H04B7/26 ,  H04L12/28 ,  H04W4/00 ,  H04W28/00 ,  H04W74/08 ,  H04W84/12 ,  H04Q7/20

CPC分类号： H04W74/0816 ,  H04L1/188 ,  H04W76/02 ,  H04L1/1877

摘要： A radio communication method for transmitting and receiving data between a first terminal and a second terminal comprises the following two steps. A step of establishing a connection between the first terminal and the second terminal when the first terminal and the second terminal have detected that a signal has not been transmitted on a predetermined channel, and the other step of starting data communications between the first terminal and the second terminal which have established the connection, and transmitting the predetermined signal on the predetermined channel from both the first terminal and the second terminal throughout the data communications.

摘要翻译： 一种用于在第一终端和第二终端之间发送和接收数据的无线电通信方法包括以下两个步骤。 当第一终端和第二终端已经检测到在预定信道上没有发送信号时，建立第一终端和第二终端之间的连接的步骤，以及开始第一终端和第二终端之间的数据通信的另一步骤 建立了连接的第二终端，并且在整个数据通信期间，从第一终端和第二终端在预定信道上发送预定信号。

公开(公告)号：US09237408B2

公开(公告)日：2016-01-12

申请号：US13613197

申请日：2012-09-13

申请人： Tsutomu Mukai ,  Hitoshi Takai

发明人： Tsutomu Mukai ,  Hitoshi Takai

IPC分类号： H04W4/06 ,  H04W72/04 ,  H04W4/00 ,  H04L12/18 ,  H04W76/00

CPC分类号： H04H60/73 ,  H04L12/18 ,  H04L12/1845 ,  H04W4/00 ,  H04W4/06 ,  H04W76/40 ,  H04W84/12

摘要： 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.

公开(公告)号：US08345648B2

公开(公告)日：2013-01-01

申请号：US12504806

申请日：2009-07-17

申请人： Tsutomu Mukai ,  Hitoshi Takai

发明人： Tsutomu Mukai ,  Hitoshi Takai

IPC分类号： H04W48/08 ,  H04W12/08 ,  H04L12/26

CPC分类号： H04H60/73 ,  H04L12/18 ,  H04L12/1845 ,  H04W4/00 ,  H04W4/06 ,  H04W76/40 ,  H04W84/12

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08170130B2

公开(公告)日：2012-05-01

申请号：US11886072

申请日：2006-03-24

申请人： Hideki Nakahara ,  Hitoshi Takai ,  Koichiro Tanaka

发明人： Hideki Nakahara ,  Hitoshi Takai ,  Koichiro Tanaka

IPC分类号： H04B7/02

CPC分类号： H04L27/206 ,  H04B7/0678

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080175221A1

公开(公告)日：2008-07-24

申请号：US10569491

申请日：2005-09-16

申请人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

发明人： Hideki Nakahara ,  Hitoshi Takai ,  Hidetoshi Yamasaki ,  Kenji Miyanaga ,  Koichiro Tanaka

IPC分类号： H04J3/06

CPC分类号： H04L1/1887 ,  H04B7/022 ,  H04B7/0667 ,  H04B7/0676 ,  H04B7/15592 ,  H04W84/042 ,  H04W84/047

摘要： The present invention provides a wireless transmission system in which it is possible to exert a maximum path diversity effect even if the maximum number of effective branches is limited to a small number. A transmission timing control section (23) determines a transmission start timing to be a timing obtained by delaying a reference timing by a predetermined delay amount. A modulation section (21) modulates a signal by a modulation scheme such that an anti-multipath property is exerted when the signal is demodulated on a receiver side, and transmits the modulated signal at the transmission start timing. In a receiving station (12), a demodulation section (33) demodulates the receive signal to obtain receive data. The predetermined delay amount is such that signals are received at the receiving station (12) at a plurality of signal-receiving timings, and the number of signal-receiving timings is less than or equal to a predetermined maximum number of effective branches, a difference between the signal-receiving timings is greater than or equal to a predetermined delay resolution and is less than or equal to a predetermined maximum delay.

摘要翻译： 本发明提供一种无线传输系统，其中即使最大数量的有效分支被限制为少数，也可以施加最大路径分集效应。 发送定时控制部（23）将发送开始定时确定为通过将基准定时延迟预定延迟量而获得的定时。 调制部（21）通过调制方式对信号进行调制，使得当在接收机侧解调信号时施加抗多径特性，并在发送开始定时发送调制信号。 在接收站（12）中，解调部（33）对接收信号进行解调，得到接收数据。 预定延迟量使得在接收站（12）处以多个信号接收定时接收信号，并且信号接收定时的数量小于或等于预定的最大有效分支数，差 在信号接收定时之间大于或等于预定的延迟分辨率并且小于或等于预定的最大延迟。

公开(公告)号：US07277501B2

公开(公告)日：2007-10-02

申请号：US10640655

申请日：2003-08-14

申请人： Kenichi Mori ,  Yoshio Urabe ,  Koichiro Tanaka ,  Hideki Nakahara ,  Hitoshi Takai

发明人： Kenichi Mori ,  Yoshio Urabe ,  Koichiro Tanaka ,  Hideki Nakahara ,  Hitoshi Takai

IPC分类号： H03D3/00 ,  H03K9/06

CPC分类号： H04L27/2331 ,  H04L5/06

摘要： A data receiving device is provided enabling a reduction in the time required for extracting a partial band signal, and capable of being easily made in a simple structure as an LSI device without requiring a plurality of analog circuits having the same characteristics. The data receiving device includes: a first sampler for sampling an in-phase signal I(t) at every predetermined sampling period and outputting the sampled in-phase signal; a second sampler for sampling a quadrature signal at every predetermined sampling period and outputting the sampled quadrature signal; a partial band extracting section structured by a complex filter for extracting partial band signals IBr, QBr from frequency components included in the sampled in-phase signal and the sampled quadrature signal; and first and second delay detection operating sections for performing a delay detecting process based on the partial band signals and outputting detection signals.

摘要翻译： 提供一种数据接收装置，其能够减少提取部分频带信号所需的时间，并且能够容易地以简单的结构作为LSI装置，而不需要具有相同特性的多个模拟电路。 数据接收装置包括：第一采样器，用于在每个预定采样周期对同相信号I（t）进行采样，并输出采样的同相信号; 第二取样器，用于在每个预定采样周期对正交信号进行采样，并输出采样的正交信号; 由复数滤波器构成的部分频带提取部分，用于从包括在采样的同相信号中的频率分量和采样的正交信号中提取部分频带信号IB，QB＆lt; SUB＆lt; ; 以及第一和第二延迟检测操作部分，用于基于部分频带信号执行延迟检测处理并输出检测信号。

公开(公告)号：US5561673A

公开(公告)日：1996-10-01

申请号：US227446

申请日：1994-04-14

申请人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Yoshio Urabe

发明人： Hitoshi Takai ,  Hidetoshi Yamasaki ,  Yoshio Urabe

IPC分类号： H04B7/08 ,  H04L1/06 ,  H04L1/20

CPC分类号： H04B7/0888 ,  H04B7/0814 ,  H04B7/082 ,  H04L1/06

摘要： An antenna switched diversity receiver comprising a plurality of physically separated antennas, a switching unit for selectively switching to one of the plurality of antennas to receive a burst in a time series, a decoding unit for decoding transmission data contained in the received burst in a reversed manner to coding, a bit-error-detecting unit for detecting a bit error in decoded data in each received burst, and a control unit for controlling the switching unit in accordance with the bit-error detection result. The receiver may additionally include a RSSI (received signal strength indicator) checking unit for checking a RSSI of a switched antenna and a RSSI holding unit for holding a RSSI. The receiver constructed as above controls switching based on detection of at least one bit error in each of m consecutive bursts burst alone or together with the RSSI. As a result, the receiver obtains excellent diversity effect while being compact and economical.

摘要翻译： 一种天线切换分集接收机，包括多个物理分离的天线，切换单元，用于选择性地切换到所述多个天线中的一个天线以按时间序列接收脉冲串;解码单元，用于将包含在所接收的脉冲串中的发送数据逆转 用于检测每个接收脉冲串中的解码数据中的比特误差的比特误差检测单元，以及用于根据比特误差检测结果控制切换单元的控制单元。 接收机还可以包括用于检查交换天线的RSSI的RSSI（接收信号强度指示符）检查单元和用于保持RSSI的RSSI保持单元。 如上构造的接收机基于对单独的m个连续突发突发中的每一个中的至少一个比特错误的检测或与RSSI一起来控制切换。 结果，接收器在紧凑且经济的情况下获得优异的分集效应。

公开(公告)号：US4882614A

公开(公告)日：1989-11-21

申请号：US70804

申请日：1987-07-07

申请人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Eiji Iwasaki

发明人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Eiji Iwasaki

IPC分类号： H04N5/21 ,  H04N5/44 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087 ,  H04N11/24

CPC分类号： H04N7/0122 ,  H04N11/006 ,  H04N11/008 ,  H04N5/211 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087

摘要： A multiplex signal processing apparatus in a signal transmitting and receiving system includes at the transmitting side: a first amplitude-modulator for modulating a first carrier by a main signal to obtain a vestigial sideband, amplitude-modulated main signal; a second amplitude-modulator for modulating a second carrier which has the same frequency but differs in phase by 90.degree. from the first carrier by a multiplex signal to obtain a double sideband, amplitude-modulated multiplex signal; an inverse Nyquist filter for filtering this signal to obtain a vestigial sideband, amplitude-modulated multiplex signal; and an adder for adding the vestigial sideband, amplitude-modulated main and multiplex signals to obtain a multiplexed signal. The apparatus at the receiving side includes: a Nyquist filter for filtering the multiplexed signal; a carrier regenerator for regenerating the first and second carriers from the multiplexed signal; a main signal detector for detecting the main signal from the multiplexed signal passed through the Nyquist filter by using the first carrier; a filter for removing quadrature distortion from the multiplexed signal; and a multiplex signal detector for detecting the multiplex signal from the multiplexed signal passed through the filter by using the second carrier. By inverse Nyquist filtering the auxiliary signal in quadrature to the picture carrier, a normal synchronous receiver will produce a conventional television signal without distortion (crosstalk) caused by quadrature distortion of an auxiliary signal containing additional picture information while at the same time allowing relatively simple demodulation of the auxiliary signal in improved receivers without adding distortion.

公开(公告)号：US4609092A

公开(公告)日：1986-09-02

申请号：US584914

申请日：1984-02-29

申请人： Hitoshi Takai

发明人： Hitoshi Takai

IPC分类号： B65G47/76 ,  B65G47/53

CPC分类号： B65G47/766

摘要： 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.

摘要翻译： 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。