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    • 2. 发明授权
    • Position detecting system
    • 位置检测系统
    • US5717484A
    • 1998-02-10
    • US405781
    • 1995-03-17
    • Takayuki HamaguchiNobukazu Kawagoe
    • Takayuki HamaguchiNobukazu Kawagoe
    • G01C15/00G01B11/00G01S5/16G05D1/02G01C3/00G01C5/00H01J40/14
    • G01S5/16G05D1/0231G05D1/027
    • A first light receiving portion and a second light receiving portion are provided on the upper surface of a moving body having driving wheels at an interval of a prescribed distance in a plane. The first light receiving portion and the second light receiving portion rotate around the axis in the vertical direction. On the other hand, a first light emitting portion and a second light emitting portion are provided on the side face of a station serving as a reference station at an interval of a prescribed distance in a plane. The first and second light receiving portions carry out sampling while rotating, so that the quantity of light reception is changed according to the directivities of the first and second light receiving portions. When the peaks of the directivities of the first and second light receiving portions match the direction of the first light emitting portion or the second light emitting portion, the quantity of light reception is maximized. Based on a rotational angle at which the quantity of light reception is maximized, the relative positions and the relative directions of the first and second light receiving portions with respect to the first and second light emitting portions are calculated.
    • 第一光接收部分和第二光接收部分设置在具有驱动轮的移动体的上表面上,该驱动轮在平面中以规定距离的间隔。 第一光接收部分和第二光接收部分在垂直方向上绕轴线旋转。 另一方面,第一发光部分和第二发光部分在平面中以规定距离的间隔设置在用作参考站的站的侧面上。 第一和第二光接收部分在旋转的同时进行采样,从而根据第一和第二光接收部分的方向性来改变光的接收量。 当第一和第二光接收部分的方向性的峰值与第一发光部分或第二发光部分的方向一致时,光接收量最大化。 基于光接收量最大化的旋转角度,计算第一和第二光接收部分相对于第一和第二发光部分的相对位置和相对方向。
    • 4. 发明授权
    • Information terminal device, radio communication system and radio communication method
    • 信息终端设备,无线通信系统和无线电通信方式
    • US07787821B2
    • 2010-08-31
    • US11800826
    • 2007-05-08
    • Takayuki Hamaguchi
    • Takayuki Hamaguchi
    • H04B5/00
    • H04M1/7253H04W52/0235H04W84/12H04W84/18H04W88/06Y02D70/142Y02D70/144Y02D70/162
    • An information terminal device (terminal) has a first radio communication unit capable of performing radio communication with low power consumption and a second radio communication unit performing data communication using a wireless LAN. In an ad-hoc mode in which data communication is performed between the terminals, as a rule, the second radio communication unit is set in a sleep mode. However, when actual data communication is necessary, an activation signal is transmitted to a terminal as a communication party by using the first radio communication unit to activate the second radio communication unit. After completion of data communication, a stop signal is transmitted to the terminal as the communication party by using the first radio communication unit to stop the second radio communication unit on the transmission side. In such a manner, transmission of a beacon signal from the second radio communication unit is suppressed, and proper power saving is realized.
    • 信息终端装置(终端)具有能够以低功耗进行无线通信的第一无线通信单元和使用无线LAN进行数据通信的第二无线通信单元。 在终端之间执行数据通信的自组织模式中,通常将第二无线电通信单元设置为休眠模式。 然而,当需要实际数据通信时,通过使用第一无线电通信单元激活第二无线电通信单元,将作为通信方的终端作为激活信号发送。 在完成数据通信之后,通过使用第一无线电通信单元将终止信号作为通信方发送到终端,以在发送侧停止第二无线电通信单元。 以这种方式,抑制了来自第二无线电通信单元的信标信号的传输,并且实现了适当的省电。
    • 5. 发明申请
    • Information terminal device, radio communication system and radio communication method
    • 信息终端设备,无线通信系统和无线电通信方式
    • US20070265009A1
    • 2007-11-15
    • US11800826
    • 2007-05-08
    • Takayuki Hamaguchi
    • Takayuki Hamaguchi
    • H04Q7/20
    • H04M1/7253H04W52/0235H04W84/12H04W84/18H04W88/06Y02D70/142Y02D70/144Y02D70/162
    • An information terminal device (terminal) has a first radio communication unit capable of performing radio communication with low power consumption and a second radio communication unit performing data communication using a wireless LAN. In an ad-hoc mode in which data communication is performed between the terminals, as a rule, the second radio communication unit is set in a sleep mode. However, when actual data communication is necessary, an activation signal is transmitted to a terminal as a communication party by using the first radio communication unit to activate the second radio communication unit. After completion of data communication, a stop signal is transmitted to the terminal as the communication party by using the first radio communication unit to stop the second radio communication unit on the transmission side. In such a manner, transmission of a beacon signal from the second radio communication unit is suppressed, and proper power saving is realized.
    • 信息终端装置(终端)具有能够以低功耗进行无线通信的第一无线通信单元和使用无线LAN进行数据通信的第二无线通信单元。 在终端之间执行数据通信的自组织模式中,通常将第二无线电通信单元设置为休眠模式。 然而,当需要实际数据通信时,通过使用第一无线电通信单元激活第二无线电通信单元,将作为通信方的终端作为激活信号发送。 在完成数据通信之后,通过使用第一无线电通信单元将终止信号作为通信方发送到终端,以在发送侧停止第二无线电通信单元。 以这种方式,抑制了来自第二无线电通信单元的信标信号的传输,并且实现了适当的省电。