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    • 1. 发明专利
    • Transceiver for electric field communication
    • 电力通信用收发器
    • JP2010187105A
    • 2010-08-26
    • JP2009028705
    • 2009-02-10
    • Nippon Telegr & Teleph Corp Ntt Electornics CorpNttエレクトロニクス株式会社日本電信電話株式会社
    • MIZOTA TSUTOMUFURUYA AKINORISATO HIDENORISHINAGAWA MITSURUKADO YUICHIYOSHIDA YUKIHINUMA YOSHIYASUYABE SEIJI
    • H04B13/00H04B5/02
    • PROBLEM TO BE SOLVED: To provide a transceiver for electric field communication, which automatically adjusts receiving sensitivity and transmission output according to a noise environment in a place where the transceiver is used.
      SOLUTION: The transceiver for electric field communication 1 includes: an electric field detection section 121 for detecting a change in an electric field generated in an electrode for electric field communication 2 and converting the detected change into an electric signal; a signal processing circuit 122 for setting a threshold for rigorously distinguishing a noise and a communication signal from the electric signal outputted from the electric field detection section, filtering the electric signal exceeding the threshold, and outputting the filtered signal as a received signal; a transmission section 111 for converting a transmission signal into an electric field signal and outputting the electric field signal to the electrode for electric field communication; a receiving sensitivity adjustment circuit 125 for detecting a noise level of the received signal, and variably adjusting the threshold of the signal processing circuit to the value of a minimum level within a range in which the noise and the communication signal can be rigorously distinguished; and a transmission output adjustment circuit 112 for variably adjusting the transmission output of the transmission section so as to be adjusted to a level considering the rate of decrease and an S/N ratio in an electric field transmission medium against the noise level.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于电场通信的收发机,其根据在使用收发器的地方的噪声环境自动调整接收灵敏度和传输输出。 解决方案:用于电场通信的收发器1包括:电场检测部分121,用于检测在电场通信用电极2中产生的电场的变化,并将检测到的变化转换成电信号; 信号处理电路122,用于设置用于严格区分来自电场检测部分输出的电信号的噪声和通信信号的阈值,对超过阈值的电信号进行滤波,并将滤波后的信号作为接收信号输出; 用于将发送信号转换为电场信号并将电场信号输出到电场通信用电极的发送部111; 用于检测接收信号的噪声电平的接收灵敏度调整电路125,并且可以在可以严格区分噪声和通信信号的范围内将信号处理电路的阈值可变地调整为最小电平的值; 以及发送输出调整电路112,用于可变地调整发送部分的发送输出,以便考虑到电场传输介质中的降低速率和S / N比相对于噪声电平而被调整到一个电平。 版权所有(C)2010,JPO&INPIT
    • 3. 发明专利
    • Electric field reception system
    • 电场接收系统
    • JP2010177765A
    • 2010-08-12
    • JP2009015423
    • 2009-01-27
    • Nippon Telegr & Teleph Corp Ntt Electornics CorpNttエレクトロニクス株式会社日本電信電話株式会社
    • ISHIHARA TAKAKOMINOYA NAOSHIMIZOTA TSUTOMUSHINAGAWA MITSURUKADO YUICHIYABE SEIJIKIKUCHI RYOJIMURATA TAKESHI
    • H04B13/00H04B5/02
    • PROBLEM TO BE SOLVED: To provide an electric field reception system which can receive only an electric field induced from a signal source to earth.
      SOLUTION: An electric field reception system receiving an electric field induced from a signal source 1 to an earth 2 includes an earth side electrode 3 arranged facing the earth 2, a signal source side electrode 4 arranged facing an opposite side of an earth side of the earth side electrode 3 and located on a signal source side of the earth side electrode 3, and a differential amplifier 51 performs differential amplification of a potential difference which has occurred due to the electric field between the signal source side electrode 4 and the earth side electrode 3. An area of the signal source side electrode 4 is larger than that of the earth side electrode 3 and an electric capacity C4 becomes equal to an electric capacity C3. Therefore, a noise to the signal source side electrode 4 from the earth 2 and a noise to the earth side electrode 3 from the earth 2 are canceled each other.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种电场接收系统,其可以仅接收从信号源感应到地球的电场。 解决方案:从信号源1向地球2接收电场的电场接收系统包括面向地球2的接地侧电极3,面对地球的相对侧布置的信号源侧电极4 并且位于接地侧电极3的信号源侧,差分放大器51对信号源侧电极4与电源侧电极3之间的电场产生的电位差进行差分放大 信号源侧电极4的面积大于接地侧电极3的面积,电容C4变得等于电容C3。 因此,从地极2向信号源侧电极4发出的噪声和从地极2到地侧电极3的噪声彼此抵消。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Security door control system
    • 安全门控制系统
    • JP2010081083A
    • 2010-04-08
    • JP2008244692
    • 2008-09-24
    • Nippon Telegr & Teleph Corp Ntt Electornics CorpNttエレクトロニクス株式会社日本電信電話株式会社
    • OCHIAI KATSUYUKIFURUYA AKINORIMINOYA NAOSHISHINAGAWA MITSURUKADO YUICHIYABE SEIJI
    • H04B13/00H04B5/02
    • PROBLEM TO BE SOLVED: To prevent erroneous detection, resulting in erroneous release of a door lock for an unqualified person in the situation that a qualified person carrying an electric field communication terminal for which a regular ID is acquired passes nearby in the state that the unqualified person is standing on an electrode for electric field communication near a door.
      SOLUTION: In the security door control system, a security door controller 7 (1) does not perform ID authentication processing when neither a main transceiver 6A nor a sub transceiver 6B receives electric field communication signal or when the signal strength of the reception signals of the sub transceiver is higher and a signal waveform is in an opposite phase, and (2) performs the ID authentication processing when both the main transceiver and sub transceiver receive the electric field communication signal and the signal waveforms of the reception signal of the main transceiver and the reception signal of the sub transceiver are in the same phase or when the signal strength of the reception signal of the main transceiver is higher, and unlocks a security door 5 when ID authentication succeeds.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题为了防止错误的检测,导致在获得正常ID的电子通信终端的合格人员在该状态下经过附近的情况下,对不符合条件的人员的门锁的错误释放 不合格的人站在门附近的电场通信用电极上。 解决方案:在安全门控制系统中,当主收发器6A和子收发器6B都不接收电场通信信号时,或当接收信号强度时,安全门控制器7(1)不执行ID认证处理 子收发器的信号较高,信号波形处于相反的阶段,(2)当主收发器和副收发器都接收到电场通信信号和接收信号的信号波形时,执行ID认证处理 主收发器和子收发器的接收信号处于相同的相位或当主收发器的接收信号的信号强度较高时,并且当ID认证成功时解锁安全门5。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Mobile phone
    • 移动电话
    • JP2010081081A
    • 2010-04-08
    • JP2008244687
    • 2008-09-24
    • Nippon Telegr & Teleph Corp Ntt Electornics CorpNttエレクトロニクス株式会社日本電信電話株式会社
    • ISHIHARA TAKAKOKAWANO RYUSUKEMIZOTA TSUTOMUSHINAGAWA MITSURUKADO YUICHIYABE SEIJI
    • H04B13/00H04B1/38H04B1/3822H04M1/725
    • PROBLEM TO BE SOLVED: To provide a mobile phone in which a display unit is movable to an operation unit, which is commonly used for electric field communication, including a transceiver performing electric field communication and a computer controlling electric field communication, eliminates the risk of touching a signal electrode for electric field communication and a ground electrode at the same time when a user uses it in a hand in a usual usage mode of the mobile phone, and sufficiently demonstrates the electric field communication performance. SOLUTION: The mobile phone 11 is characterized in that the mobile phone 11 includes the transceiver 117 performing electric field communication and the computer 118 controlling electric field communication, the display unit 111 is a movable unit to slide or rotate with respect to the operation unit 110, and the signal electrode 113 for electric field communication and the ground electrode 114 are installed in the positions electrically facing each other on a surface or inside of the display unit for connection with the transceiver. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供一种移动电话,其中显示单元可移动到通常用于电场通信的操作单元,包括执行电场通信的收发机和控制电场通信的计算机,消除 在用户通过手机的通常使用方式手中使用它的同时,触摸用于电场通信的信号电极和接地电极的风险,并且充分证明了电场通信性能。 解决方案:移动电话11的特征在于,移动电话11包括进行电场通信的收发信机117和控制电场通信的计算机118,显示单元111是相对于移动电话11滑动或旋转的可移动单元 操作单元110和用于电场通信的信号电极113和接地电极114安装在与收发器连接的显示单元的表面或内部彼此相对的位置。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • Door knob for electric field communication
    • 电动车通讯门
    • JP2009290770A
    • 2009-12-10
    • JP2008143537
    • 2008-05-30
    • Nippon Telegr & Teleph Corp Ntt Electornics CorpNttエレクトロニクス株式会社日本電信電話株式会社
    • MINOYA NAOSHIMIZOTA TSUTOMUKADO YUICHISHINAGAWA MITSURUASAHI TOSHIAKIOKAMOTO HIDEYUKIYABE SEIJIKIKUCHI RYOJI
    • H04B13/00
    • PROBLEM TO BE SOLVED: To provide a door knob for electric field communication, which unfailingly transmits data outputted from an electric field communication device for human body to an electric communication device for a door.
      SOLUTION: The door knob is formed in such a way that an insulating sheet 7 is inserted between a supporting pedestal 2 of an outer knob 1 and a door locking mechanism 8, an insulating member 6 is inserted between a spindle 4 for the outer knob and a control hole 12, insulating members 5a, 5b are inserted between fixing shafts 3a, 3b and fixing holes 11a, 11b respectively, an insulating sheet 13 is inserted between the door locking mechanism 8 and a bearing plate 14 for fixing, an insulating sheet 17 is inserted between a supporting pedestal 20 of an inner knob 21 and the bearing plate 14 for fixing, and an insulating member 18 is inserted between a spindle 19 for the inner knob and the control hole 12.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于电场通信的门把手,其将从人体的电场通信装置输出的数据传送到门的电通信装置。 解决方案:门把手形成为使绝缘片7插入在外旋钮1的支撑台座2和门锁定机构8之间,绝缘构件6插入主轴4之间,用于 外旋钮和控制孔12,绝缘构件5a,5b分别插入在固定轴3a,3b和固定孔11a,11b之间,绝缘片13插入在门锁定机构8和用于固定的支承板14之间, 绝缘片17插入在内部旋钮21的支撑台座20和用于固定的支承板14之间,绝缘构件18插入在用于内部旋钮的心轴19和控制孔12之间。 C)2010,JPO&INPIT