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    • 8. 发明授权
    • Mobile communication system and location registration method in mobile
communication system
    • 移动通信系统中的移动通信系统和位置登记方法
    • US5379451A
    • 1995-01-03
    • US972547
    • 1992-11-06
    • Arata NakagoshiHideya SuzukiYoshinobu YamamotoIsao ShimboTsuneo FuruyaHiroshi Kuwahara
    • Arata NakagoshiHideya SuzukiYoshinobu YamamotoIsao ShimboTsuneo FuruyaHiroshi Kuwahara
    • H04W60/00H04W60/04H04W88/02H04B7/00
    • H04W60/00H04W60/04H04W88/02
    • A mobile station, operable in a mobil communication system that executes a location registration processing by using the channel quality of a base station and an information concerning a base station the mobile station includes a base station information memory unit for storing therein information concerning a plurality of base stations and an amount in which the channel quality of the base station is changed with time and a location judging unit for judging on the basis of the amount in which the base station information is changed with time and which is stored in the base station information memory unit whether or not location registration processing is to be executed indicating a location in service area. Whether the location registration processing is to be executed or not is determined in accordance with the moving speed of the mobile station, thereby limiting the occurrence of a location registration request which becomes invalid with a large possibility in a short period of time because the mobile station moves to another location registration area or to the calling area in a short period of time.
    • 一种在通过使用基站的信道质量执行位置登记处理的移动通信系统和与基站有关的信息中可操作的移动站,所述移动站包括:基站信息存储单元,用于在其中存储关于多个 基站和基站的信道质量随时间变化的量,以及基于基站信息随时间而变化并存储在基站信息中的位置判断单元的位置判断单元 存储单元是否要执行指示服务区域中的位置的位置注册处理。 根据移动台的移动速度来确定位置登记处理是否被执行,从而在短时间内限制了在很短的时间内以很大的可能性变得无效的位置登记请求的出现,因为移动站 在短时间内移动到另一个位置登记区域或呼叫区域。
    • 10. 发明授权
    • Multi-frequency signal receiver
    • 多频信号接收机
    • US4080516A
    • 1978-03-21
    • US729255
    • 1976-10-04
    • Hiroshi Kuwahara
    • Hiroshi Kuwahara
    • H04Q1/457H04M1/26
    • H04Q1/4575
    • A multi-frequency signal receiver includes a multi-operation digital filter for frequency discriminating digitalized multi-frequency signals from a plurality of push-phone type telephone sets. In order to enhance the efficiency of utility of the digital filter, a signal detection circuit is provided for each telephone channel to detect the beginning, the duration and the end of an input signal for controlling the connection between the telephone channel and the digital filter for a predetermined time period from the beginning of the signal in accordance with the result of the detection, whereby a time period during which the telephone channel occupies a specific filter channel is shortened.
    • 多频信号接收机包括用于对来自多个推电话式电话机的数字化多频信号进行频率鉴别的多操作数字滤波器。 为了提高数字滤波器的效用,为每个电话信道提供信号检测电路以检测用于控制电话信道和数字滤波器之间的连接的输入信号的开始,持续时间和结束,以便 从根据检测结果的信号开始起的预定时间段,由此缩短电话信道占用特定滤波器信道的时间段。