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42 条记录 (耗时 0.055 秒)

    Communication system including portable terminals and fixed terminals
    1.
    发明授权
    Communication system including portable terminals and fixed terminals 失效
    通信系统包括便携式终端和固定终端

    公开(公告)号：US5157660A

    公开(公告)日：1992-10-20

    申请号：US586242

    申请日：1990-09-21

    申请人： Hiroshi Kuwahara ,  Nobuo Tsukamoto ,  Kumiko Takikawa ,  Yuji Sakamoto ,  Shirou Tanabe

    发明人： Hiroshi Kuwahara ,  Nobuo Tsukamoto ,  Kumiko Takikawa ,  Yuji Sakamoto ,  Shirou Tanabe

    IPC分类号： H04M1/00 ,  H04M1/253 ,  H04M3/42 ,  H04M11/02 ,  H04Q11/04 ,  H04W84/16

    CPC分类号： H04W84/16 ,  H04M3/42 ,  H04Q11/0428 ,  H04M11/022 ,  H04M3/42229

    摘要： A communication system including a plurality of portable terminal apparatuses each capable of calling a partner terminal apparatus via a radio channel and a plurality of fixed terminal apparatuses each being connected via an ISDN interface to a time-division switch and each being connectable to the portable terminal in which when two portable terminals having an established cell are respectively attached to two fixed terminal apparatuses arbitrarily selected, the state of the call is automatically transferred to the two fixed terminal apparatuses so that the speech can be achieved between the fixed terminal apparatuses without conducting another call establishing procedure.

    摘要翻译： 一种通信系统，包括多个便携式终端装置，每个便携式终端装置能够通过无线电信道呼叫对方终端装置，以及多个固定终端装置，每个固定终端装置经由ISDN接口连接到时分开关，并且每个可连接到便携终端 其中当具有建立小区的两个便携式终端分别附加到任意选择的两个固定终端设备时，呼叫的状态被自动传送到两个固定终端设备，使得可以在固定终端设备之间实现语音而不进行另一个 呼叫建立程序。

    Wireless communication system
    3.
    发明授权
    Wireless communication system 有权

    公开(公告)号：US07953384B2

    公开(公告)日：2011-05-31

    申请号：US12839932

    申请日：2010-07-20

    申请人： Kumiko Takikawa ,  Satoshi Tanaka ,  Yoshiyasu Tashiro

    发明人： Kumiko Takikawa ,  Satoshi Tanaka ,  Yoshiyasu Tashiro

    IPC分类号： H04B1/28 ,  H04B1/16 ,  H04B1/06 ,  H04B7/00

    摘要： A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.

    Mobile communication apparatus
    5.
    发明授权
    Mobile communication apparatus 有权
    移动通信装置

    公开(公告)号：US07366489B2

    公开(公告)日：2008-04-29

    申请号：US10742813

    申请日：2003-12-23

    申请人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

    发明人： Satoshi Tanaka ,  Kazuo Watanabe ,  Masao Hotta ,  Toyohiko Hongo ,  Taizo Yamawaki ,  Masumi Kasahara ,  Kumiko Takikawa

    IPC分类号： H04B1/06 ,  H04B1/10

    CPC分类号： H04B1/30 ,  H03D2200/0047 ,  H03K21/16

    摘要： A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF band. Dividers each having a fixed division ratio are used for generating locally oscillated signals for the receiver, while a divider having a switchable division ratio are used for generating the locally oscillated signal for the transmitter. In addition, a variable gain amplifier for baseband signal is provided with a DC offset voltage detector and a DC offset canceling circuit for supporting high speed data communications to accomplish fast cancellation of a DC offset by eliminating intervention of a filter within a feedback loop for offset cancellation.

    摘要翻译： 适合较大规模集成的收发器采用直接转换接收，以减少滤波器的数量。 此外，通过利用分频器来为RF频带提供具有本地振荡信号的接收机和发射机来减少VCO的数量。 每个具有固定分频比的分频器用于产生用于接收机的局部振荡信号，而具有可切换分频比的分频器用于产生用于发射机的本地振荡信号。 另外，用于基带信号的可变增益放大器设置有DC偏移电压检测器和DC偏移消除电路，用于支持高速数据通信以通过消除用于偏移的反馈回路内的滤波器的干涉来实现DC偏移的快速消除 消除。

    Method, system and apparatus for detecting a position of a terminal in a network
    6.
    发明申请
    Method, system and apparatus for detecting a position of a terminal in a network 失效
    用于检测终端在网络中的位置的方法，系统和装置

    公开(公告)号：US20060105779A1

    公开(公告)日：2006-05-18

    申请号：US11268527

    申请日：2005-11-08

    申请人： Takaki Uta ,  Atsushi Ogino ,  Ryota Yamasaki ,  Kumiko Takikawa

    发明人： Takaki Uta ,  Atsushi Ogino ,  Ryota Yamasaki ,  Kumiko Takikawa

    IPC分类号： H04Q7/20

    CPC分类号： H04W64/00 ,  H04W84/12

    摘要： In a position detection system utilizing a WLAN supporting multiple data transfer rates, it is possible to reduce the number of required installed base stations, so system construction costs can be lowered. In a wireless station, a transmitted signal is judged at the time of transmission, and in case it is normal user data, the signal is transmitted by setting optimal transmission parameters for which a high communication throughput with wireless communication is obtained, and in case it is a position detection signal, the aforementioned signal is transmitted by setting transmission parameters for which the service range is increased. As a transmission parameter for which the service range is increased, a low data transfer rate or a long preamble length is used.

    摘要翻译： 在利用支持多个数据传输速率的WLAN的位置检测系统中，可以减少所需安装的基站的数量，因此可以降低系统构造成本。 在无线站中，在发送时判定发送信号，在通常的用户数据的情况下，通过设定通过无线通信获得高通信吞吐量的最佳传输参数来发送信号， 是位置检测信号，通过设定服务范围增加的传输参数来发送上述信号。 作为服务范围增加的传输参数，使用低数据传输速率或长前导码长度。

    Method, system and apparatus for detecting a position of a terminal in a network
    8.
    发明授权
    Method, system and apparatus for detecting a position of a terminal in a network 失效
    用于检测终端在网络中的位置的方法，系统和装置

    公开(公告)号：US07890118B2

    公开(公告)日：2011-02-15

    申请号：US11268527

    申请日：2005-11-08

    申请人： Takaki Uta ,  Atsushi Ogino ,  Ryota Yamasaki ,  Kumiko Takikawa

    发明人： Takaki Uta ,  Atsushi Ogino ,  Ryota Yamasaki ,  Kumiko Takikawa

    IPC分类号： H04W24/00

    CPC分类号： H04W64/00 ,  H04W84/12

    摘要： In a position detection system utilizing a WLAN supporting multiple data transfer rates, it is possible to reduce the number of required installed base stations, so system construction costs can be lowered. In a wireless station, a transmitted signal is judged at the time of transmission, and in case it is normal user data, the signal is transmitted by setting optimal transmission parameters for which a high communication throughput with wireless communication is obtained, and in case it is a position detection signal, the aforementioned signal is transmitted by setting transmission parameters for which the service range is increased. As a transmission parameter for which the service range is increased, a low data transfer rate or a long preamble length is used.

    摘要翻译： 在利用支持多个数据传输速率的WLAN的位置检测系统中，可以减少所需安装的基站的数量，因此可以降低系统构造成本。 在无线站中，在发送时判定发送信号，在通常的用户数据的情况下，通过设定通过无线通信获得高通信吞吐量的最佳传输参数来发送信号， 是位置检测信号，通过设定服务范围增加的传输参数来发送上述信号。 作为服务范围增加的传输参数，使用低数据传输速率或长前导码长度。