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    Cordless key telephone system capable of quickly answering incoming calls
    1.
    发明授权
    Cordless key telephone system capable of quickly answering incoming calls 失效
    无钥匙电话系统，可以快速地回答收信呼叫

    公开(公告)号：US5239572A

    公开(公告)日：1993-08-24

    申请号：US686468

    申请日：1991-04-17

    申请人： Noboru Saegusa ,  Akio Yotsutani ,  Shinji Kumataka ,  Kouzo Kobayashi ,  Hiroyuki Misawa ,  Kosuke Hashimoto

    发明人： Noboru Saegusa ,  Akio Yotsutani ,  Shinji Kumataka ,  Kouzo Kobayashi ,  Hiroyuki Misawa ,  Kosuke Hashimoto

    IPC分类号： H04W84/16

    CPC分类号： H04W84/16

    摘要： In a cordless key telephone system, access units are located in groups corresponding to service areas for broadcasting radio signals on a control channel or on an assigned speech channel to cordless stations. A main controller selects one of the access units for each service area in response to an incoming call from the switched telephone network and sends a first alert signal to the selected access units to cause them to broadcast a recurrent sequence of second alert signals containing the identifiers of standby cordless stations. The second alert signal is received by each standby cordless station and an ACK signal is transmitted if the received signal contains its identifier. The ACK signal is copied by each access unit for transmission to the main controller, whereupon it returns a proceed-to-assign signal if the number of the received copies of the ACK signals is equal to the number of all standby stations. The proceed-to-assign signal is received by the selected access units and a channel assignment signal is broadcast indicating the assigned channel. On receiving it, each station is switched to the assigned channel and one of the stations in each area transmits an end-of-switching signal to cause the access units to broadcast ringing signals containing the identifiers of the alerted stations. In response to a given cordless station going off hook, an off-hook signal is sent from it and copied by the associated access unit for transmission to the main controller, which returns a turn-on signal to allow the given station to activate its speech circuit.

    Control method and appartus for a radio telephone system
    2.
    发明授权
    Control method and appartus for a radio telephone system 失效
    无线电话系统的控制方法和附件

    公开(公告)号：US4897864A

    公开(公告)日：1990-01-30

    申请号：US178844

    申请日：1988-04-07

    申请人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    发明人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    IPC分类号： H04Q7/38 ,  H04B7/26 ,  H04M1/00 ,  H04M1/725 ,  H04M1/73 ,  H04M9/00 ,  H04Q7/20 ,  H04Q7/28

    CPC分类号： H04M9/00 ,  H04M1/72508

    摘要： A method and apparatus for controlling a radio telephone system wherein a speech channel is established between one radio telephone handset out of a plurality of radio telephone handsets and a base unit. An interphone switch for selecting intercom communication is provided for respective radio telephone handsets. The transmitters of the radio telephone handsets are turned OFF when the intercom switch is OFF, and transmitters of the radio telephone handsets are turned ON when the intercom switch is ON. Consequently the connection between a wired telephone channel and the plurality of radio telephone handsets can be controlled with a single base unit connected to the wired telephone channel.

    摘要翻译： 一种用于控制无线电话系统的方法和装置，其中在多个无线电话机中的一个无线电话手机与基本单元之间建立语音信道。 为各个无线电话机提供用于选择对讲通信的对讲机交换机。 当对讲机开关关闭时，无线电话机的发射机关闭，无线电话机的发射机在对讲机开关接通时变为ON。 因此，有线电话信道和多个无线电话机之间的连接可以用连接到有线电话信道的单个基本单元进行控制。

    Radio telephone system control method
    3.
    发明授权
    Radio telephone system control method 失效
    无线电话系统控制方法

    公开(公告)号：US5140628A

    公开(公告)日：1992-08-18

    申请号：US443334

    申请日：1989-11-30

    申请人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    发明人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    IPC分类号： H04M1/725 ,  H04M9/00

    CPC分类号： H04M1/72508 ,  H04M9/00

    摘要： In a method and apparatus for controlling a radio telephone system, a speech channel is established between the slave radio set of a plurality of radio telephone sets and a radio set of a base unit. An intercom switch for selecting intercom performances is provided for respective radio telephone sets. The slave radio sets of the radio telephone sets are turned OFF when the intercom switch is OFF, and transmitters of the slave radio sets of the radio telephone sets are turned ON. Consequently the connection between a wired telephone channel and the plurality of radio telephone sets can be controlled with a single base unit connected to the wired telephone channel.

    摘要翻译： 在用于控制无线电话系统的方法和装置中，在多个无线电话机的从无线电设备和基站单元的无线电设备之间建立语音信道。 为各个无线电话机提供用于选择对讲性能的内部通信交换机。 无线电话机的从属无线电设备在内部通信开关关闭时关闭，无线电话机的从无线电设备的发射机接通。 因此，有线电话信道与多个无线电话机之间的连接可以用连接到有线电话信道的单个基本单元进行控制。

    Method of transmitting terminating call signals within a restricted duration and a base station and a portable unit for use in the same
    4.
    发明授权
    Method of transmitting terminating call signals within a restricted duration and a base station and a portable unit for use in the same 失效
    在受限制的持续时间内发送终止呼叫信号的方法以及用于其中的基站和便携式单元

    公开(公告)号：US4736461A

    公开(公告)日：1988-04-05

    申请号：US13823

    申请日：1987-02-12

    申请人： Ryoji Kawasaki ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Noboru Saegusa ,  Koichi Ito ,  Syozi Huse

    发明人： Ryoji Kawasaki ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Noboru Saegusa ,  Koichi Ito ,  Syozi Huse

    IPC分类号： H04B1/40 ,  H04B1/16 ,  H04B7/26 ,  H04M1/73 ,  H04B7/00

    CPC分类号： H04W52/0235 ,  H04M1/73

    摘要： A portable unit that may be called from a base station through a radio control channel by a succession of terminating call signals that is sent through the control channel from the base station to the portable unit for a first or restricted time duration (T.sub.1), selected in consideration of a battery saving period of a battery saving operation carried out in the portable unit. Within the battery saving period, the portable unit is put into transient active and inactive states during a first time interval and a second time interval, respectively. Selection is made so that the first time duration is longer than the second time interval to receive at least one of the terminating call signals within the first time duration in the portable unit. The base station monitors an acknowledgement signal for a second time duration (T.sub.2) after the lapse of the first time duration and interrupts the control channel when the acknowledgement signal is not received within the first and the second time durations. In the portable unit, the battery saving operation is released when the presence of the terminating call signals is detected by a squelch circuit.

    摘要翻译： 可以通过无线电控制信道从基站通过一系列终止呼叫信号来呼叫的便携式单元，其通过控制信道从基站向便携式单元发送第一或受限的持续时间（T1），所选择的时间段（T1）被选择 考虑到在便携式单元中执行的电池节省操作的电池节省时间。 在电池节省期间，便携式单元分别在第一时间间隔和第二时间间隔期间被置于瞬时的主动和不活动状态。 进行选择使得第一持续时间长于第二时间间隔以在便携式单元中的第一持续时间内接收至少一个终止呼叫信号。 基站在经过第一持续时间之后监视第二持续时间（T2）的确认信号，并且在第一和第二持续时间内未接收到确认信号时中断控制信道。 在便携式单元中，当静音电路检测到终止呼叫信号的存在时，电池省电操作被释放。

    Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
    5.
    发明授权
    Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units 失效
    无线电话设备具有用于同步固定和便携式单元的信道扫描的装置

    公开(公告)号：US4656653A

    公开(公告)日：1987-04-07

    申请号：US856253

    申请日：1986-04-28

    申请人： Toshiaki Oda ,  Akio Yotsutani

    发明人： Toshiaki Oda ,  Akio Yotsutani

    IPC分类号： H04M1/00 ,  H04B7/26 ,  H04M1/725 ,  H04M1/73 ,  H04Q7/28 ,  H04Q7/04

    CPC分类号： H04M1/73 ,  H04M1/72511

    摘要： According to the invention, there is provided a cordless telephone apparatus having: a fixed unit and a portable unit, each having a control device for channel scanning to determine whether or not each of a plurality of channels is engaged, the portable unit being battery charged when it is attached to the fixed unit; a connecting line for transmitting and receiving signals between the two control devices when the portable unit is attached to the fixed unit; and a system for synchronizing the channel scanning processes of the two control devices through the connecting line.

    摘要翻译： 根据本发明，提供了一种无绳电话设备，其具有：固定单元和便携式单元，每个具有用于信道扫描的控制装置，用于确定多个通道中的每一个是否接合，便携式单元是电池充电的 当它连接到固定单元时; 用于在便携式单元附接到固定单元时在两个控制装置之间发送和接收信号的连接线; 以及用于通过连接线同步两个控制装置的通道扫描处理的系统。

    Mobile radio communication system
    6.
    发明授权
    Mobile radio communication system 失效
    移动无线电通信系统

    公开(公告)号：US4640986A

    公开(公告)日：1987-02-03

    申请号：US650767

    申请日：1984-09-13

    申请人： Akio Yotsutani ,  Masayuki Makino ,  Noboru Saegusa ,  Tomoshi Sone

    发明人： Akio Yotsutani ,  Masayuki Makino ,  Noboru Saegusa ,  Tomoshi Sone

    IPC分类号： H04M15/28 ,  H04M17/00 ,  H04W4/24 ,  H01Q7/04

    CPC分类号： H04W4/24 ,  H04M15/28 ,  H04M17/00 ,  H04M2215/32

    摘要： A mobile radio communication system having a plurality of fixed stations respectively connected to a plurality of subscriber's lines extending from a telephone exchange, and a plurality of mobile stations linked with the fixed stations through radio channels. Each of the mobile stations effect speech via one of the fixed stations. The system comprises means provided for each fixed station for transmitting rate charging information from the telephone exchange to a mobile station under speech, and rate collecting means provided for each mobile station and being responsive to the rate charging information to vary its content.

    摘要翻译： 一种具有分别连接到从电话交换机延伸的多个用户线路的多个固定站的移动无线电通信系统，以及通过无线电信道与固定站链接的多个移动站。 每个移动台通过固定电台之一进行语音。 该系统包括为每个固定站提供的装置，用于从电话交换机向语音下的移动台发送费率计费信息，以及为每个移动台提供的速率收集装置，并响应于速率收费信息来改变其内容。

    Radio telephone system control apparatus and method
    7.
    发明授权
    Radio telephone system control apparatus and method 失效
    无线电话系统控制装置及方法

    公开(公告)号：US4802200A

    公开(公告)日：1989-01-31

    申请号：US900590

    申请日：1986-08-26

    申请人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    发明人： Yoshitoshi Murata ,  Kazuhiro Yoshizawa ,  Akio Yotsutani ,  Koichi Ito

    IPC分类号： H04Q7/38 ,  H04B7/26 ,  H04M1/00 ,  H04M1/725 ,  H04Q7/20 ,  H04Q7/28 ,  H04M11/00

    CPC分类号： H04M1/72508

    摘要： A method and apparatus for controlling a radio telephone system of the type wherein a connection between a wired telephone channel and a plurality of radio telephone handsets is controlled by a single base station connected to the wired telephone channel, a ring signal through the wired telephone channel is detected, a paging signal is sent to the radio telephone handsets from the base station when the ring signal is detected and a paging response signal is sent to the base station from the radio telephone handset in response to the paging signal. Further a channel designating signal is sent to the radio telephone handset in accordance with the paging response signal, a radio channel of the base station is switched to a radio channel corresponding to the channel designating signal, the radio channel of the radio telephone handset is switched to a radio channel corresponding to the channel designating signal, and a speech channel is established between a radio telephone handset responding to the paging signal and the wired telephone channel.

    摘要翻译： 一种用于控制这种类型的无线电话系统的方法和装置，其中有线电话信道和多个无线电话手机之间的连接由连接到有线电话信道的单个基站控制，通过有线电话信道 当检测到振铃信号并且响应于寻呼信号从无线电话手机向基站发送寻呼响应信号时，寻呼信号从基站发送到无线电话机。 此外，根据寻呼响应信号将信道指定信号发送到无线电话手机，基站的无线电信道被切换到对应于信道指定信号的无线电信道，无线电话手机的无线电信道被切换 发送到对应于信道指定信号的无线电信道，并且在响应于寻呼信号的无线电话手机和有线电话信道之间建立语音信道。