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    • 5. 发明申请
    • Relaying apparatus and communication system
    • 中继装置和通信系统
    • US20050125093A1
    • 2005-06-09
    • US10944915
    • 2004-09-21
    • Akihiro KikuchiJunichi SawadaMasato Ishigaki
    • Akihiro KikuchiJunichi SawadaMasato Ishigaki
    • G06K17/00G06K7/00G06K19/07H04B5/02H04B7/14G06F7/00
    • G06K19/0726G06K7/0008G06K7/10178G06K19/0723
    • A relaying device for providing optimum communication between a non-contact information medium and an information read/write device, and a communication system employing the relaying device, in which the adverse effect on communication, brought about by limitations on the mounting site of the information read/write device may be eliminated. The relaying device is formed by a resonance circuit 34 including a first antenna coil 31, electromagnetically coupled to an antenna coil 11 of the information read/write device 10, a second antenna coil 32, connected in series with the first antenna coil 31 and electro-magnetically coupled to an antenna coil 21 of the non-contact information medium 20, and a tuning capacitor 33 connected in series with the first antenna coil 31 and the second antenna coil 32. The first antenna coil 31, second antenna coil 32 and the tuning capacitor 33 making up the resonance circuit 34 is resonated with the same resonance frequency as that of the resonance circuit 13 of the information read/write device 10 and that of the resonance circuit 23 of the non-contact information medium 20.
    • 一种用于在非接触信息介质和信息读/写设备之间提供最佳通信的中继设备,以及采用中继设备的通信系统,其中通过对信息的安装位置的限制引起的对通信的不利影响 可能会消除读/写设备。 中继装置由包括与信息读/写装置10的天线线圈11电磁耦合的第一天线线圈31,与第一天线线圈31串联连接的第二天线线圈32和电 与非接触式信息介质20的天线线圈21电磁耦合,以及与第一天线线圈31和第二天线线圈32串联连接的调谐电容器33。 构成谐振电路34的第一天线线圈31,第二天线线圈32和调谐电容器33以与信息读/写装置10的谐振电路13和谐振电路23的谐振频率相同的谐振频率谐振 的非接触信息介质20。
    • 8. 发明授权
    • Motor driving circuit
    • 电机驱动电路
    • US5418443A
    • 1995-05-23
    • US667482
    • 1991-03-11
    • Akihiro Kikuchi
    • Akihiro Kikuchi
    • H02P8/18G02B7/28G02B7/36H02P8/00H02P8/04H02P8/14H02P5/28
    • H02P8/14H02P8/04
    • In a motor driving circuit for generating sine wave signals for driving a focusing step motor in a video camera or the like, sine wave data stored in a ROM are accessed in response to an address signal generated by an address generator. A desired sine wave frequency is set by bit-shifting the address signal supplied from the address generator. The address generator counts horizontal sync pulses in which, prior to counting, a predetermined number of the sync pulses are removed at substantially equal intervals so that the counted number of pulses per frame is equal to a power product of 2. The order in which the sine wave data are accessed is inverted every quarter frame period, and the sine wave data read out of the ROM in a vertical period in the order established by the inverter device are processed so as to form sine wave signals having respective phases for supply to the step motor. Sine wave data having a relatively large amplitude are read out from the ROM at the start of the rotation of the step motor so as to obtain a predetermined torque, and, after the step motor has started rotating, sine wave data having a smaller amplitude are read out so as to reduce the power consumption.
    • 在用于产生用于驱动摄像机等中的聚焦步进电动机的正弦波信号的电动机驱动电路中,存储在ROM中的正弦波数据被响应于由地址发生器产生的地址信号被访问。 通过对从地址发生器提供的地址信号进行位移位来设定期望的正弦波频率。 地址发生器计数水平同步脉冲,其中在计数之前,以基本上相等的间隔去除预定数量的同步脉冲,使得每帧的计数的脉冲数等于2的幂乘积。 访问的正弦波数据每四分之一帧周期被反转,并且处理在由逆变器装置建立的顺序的垂直周期中从ROM读出的正弦波数据,以便形成具有各自相位的正弦波信号,以供给到 步进电机。 在步进电动机的旋转开始时,从ROM读出具有较大振幅的正弦波数据,以获得预定的转矩,并且在步进电动机开始旋转之后,振幅较小的正弦波数据是 读出来降低功耗。
    • 9. 发明授权
    • Apparatus for controlling the frequency of a voltage controlled
oscillator
    • 用于控制压控振荡器的频率的装置
    • US4630000A
    • 1986-12-16
    • US652094
    • 1984-09-19
    • Akihiro Kikuchi
    • Akihiro Kikuchi
    • H03L7/10H03L7/08H04N5/04
    • H03L7/10
    • Apparatus for controlling the frequency of a voltage controlled oscillator in response to a horizontal synchronizing signal of a video signal comprises a frequency divider for dividing the frequency of the output of the oscillator and a control for phase-comparing the output of the frequency divider with the horizontal synchronizing signal and controlling the frequency of the oscillator in response to the result of the phase comparison. The control comprises a circuit for forming a control signal by using a first pulse signal having a first signal level and a second pulse signal having a second signal level in response to the phase difference between the horizontal synchronizing signal and the output of the oscillator. A correcting signal is added to the control signal when the phase of the horizontal synchronizing signal is beyond a predetermined range.
    • 用于响应于视频信号的水平同步信号来控制压控振荡器的频率的装置包括用于分频振荡器的输出频率的分频器和用于将分频器的输出与 水平同步信号,并响应于相位比较的结果控制振荡器的频率。 该控制包括用于响应于水平同步信号和振荡器的输出之间的相位差,通过使用具有第一信号电平的第一脉冲信号和具有第二信号电平的第二脉冲信号来形成控制信号的电路。 当水平同步信号的相位超过预定范围时,将校正信号加到控制信号上。