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    • 1. 发明授权
    • Timing-phase control system for duobinary transmission
    • 双向传输定时相位控制系统
    • US4207528A
    • 1980-06-10
    • US12090
    • 1979-02-14
    • Akira Sawai
    • Akira Sawai
    • H04L25/40H04L7/00H04L7/02H04L7/027H04L7/033H04L25/497H04L25/60H03K11/00H04B3/36
    • H04L7/0062H04L7/027
    • A timing-phase control system provided on the receiving side of a duobinary transmission system is adaptable to high-speed PCM repeater systems using a wide-band transmission medium such as a coaxial cable. The system includes a discriminating and regenerating circuit for recovering the transmitted digital signal by discriminating and regenerating in an appropriate timing phase based on an input equalized duobinary waveform, a phase varying circuit for varying the phase of a timing signal externally supplied to the discriminating and regenerating circuit, and a derivative waveform generating circuit. In one embodiment, the derivative waveform generating circuit is responsive to the output of the discriminating and regenerating circuit, and a multiplier multiplies the output of the derivative waveform generating circuit and the equalized duobinary waveform by each other in a predetermined phase relationship. In another embodiment, the derivative waveform generating circuit differentiates the equalized duobinary waveform on a time scale, and a multiplier multiplies the output of this differentiating circuit and that of the discriminating and regenerating circuit in a predetermined phase relationship. In either case, a low-pass amplifier amplifies the output of the multiplier to provide, with a suitable D.C. offset, a negative feedback signal to the phase varying circuit.
    • 在双二进制传输系统的接收侧设置的定时相位控制系统适用于使用诸如同轴电缆的宽带传输介质的高速PCM中继器系统。 该系统包括识别和再生电路,用于基于输入的均衡二进制波形在适当的定时相位中鉴别和再生来恢复所发送的数字信号;相变电路,用于改变外部提供给识别和再生的定时信号的相位 电路和导数波形发生电路。 在一个实施例中,导数波形发生电路响应鉴别和再生电路的输出,乘法器将导数波形发生电路的输出和均衡的双二进制波形以预定的相位关系彼此相乘。 在另一实施例中,微分波形发生电路使均衡的双二进制波形在时间尺度上进行微分,并且乘法器将该微分电路的输出与鉴别和再生电路的输出以预定的相位关系相乘。 在任一种情况下,低通放大器放大乘法器的输出,以将适当的直流偏移提供给相变电路的负反馈信号。
    • 3. 发明授权
    • Surface acoustic wave device
    • 表面声波装置
    • US5939817A
    • 1999-08-17
    • US531594
    • 1995-09-21
    • Heiji Takado
    • Heiji Takado
    • H03H9/05H01L41/053
    • H03H9/1071H03H9/059H01L2224/4899H01L2924/01078H01L2924/15153H01L2924/1517H01L2924/16195
    • A surface acoustic wave element 11 having an inter digital electrode 12 formed on one surface of a piezo-electric substrate is arranged in a recess of a package 13 with the one surface being faced to a bottom surface of the recess of the package 13. An elastic conductive pad 35 having pads electrically connected to the electrode of the surface acoustic wave element 11 and electrodes of the package 13 is provided between the one surface of the surface acoustic wave element 11 and the package 13. The conductive pad 35 includes wiring means 35a, with which it is possible to connect the surface acoustic wave element 11 to the package 13 even when the position of the surface acoustic wave element in which the interdigital electrode is formed is deviated from the position of the electrodes of the package 13. The package 13 includes a cap 30 for pressing down the surface acoustic wave element 11. The surface acoustic wave element 11 is mounted on the conductive pad 35 in the package 13 with a surface of the surface acoustic wave element 11 on which the interdigital electrode is formed being down. Since the package 13 is hermetically sealed by the cap 30 while the surface acoustic wave element 11 being pressed down, the wire bonding becomes unnecessary, causing mounting to be facilitated. Further, the improvement of the quality of the device and its miniaturization are realized.
    • 具有形成在压电基板的一个表面上的数字间电极12的表面声波元件11被布置在封装13的凹部中,该一个表面面向封装13的凹部的底表面。 具有与声表面波元件11的电极电连接的焊盘和封装体13的电极的弹性导电焊盘35设置在表面声波元件11的一个表面和封装13之间。导电焊盘35包括布线装置35a 即使当形成叉指电极的表面声波元件的位置偏离了封装13的电极的位置时,也可以将表面声波元件11连接到封装13。 13包括用于按压表面声波元件11的盖30.声表面波元件11安装在封装13中的导电垫35上, 形成交叉指型电极的表面声波元件11的表面被倒下。 由于在按压表面声波元件11的同时,封装13被盖30气密地密封,所以不需要引线接合,从而便于安装。 此外,实现了设备的质量的提高及其小型化。
    • 4. 发明授权
    • Noncontacting charging device
    • 非接触充电装置
    • US5600225A
    • 1997-02-04
    • US492628
    • 1995-06-20
    • Masataka Goto
    • Masataka Goto
    • H01F38/14H02J7/00H02J7/02H02J17/00H04B7/26H01M10/44
    • H02J7/0004H02J7/025
    • A non-contacting charging device is disclosed which performs charging in which electric power of a charger 1 is supplied without direct contact to a storage battery 210, and which includes in the charger 1 a primary coil 103 and circuits 104, 105 for supplying AC power to the primary coil, and also includes in the radio communication device having a storage battery 210, a secondary coil 212 that couples electromagnetically with the primary coil 103 and a circuit 211 for supplying the induced current power generated in the secondary coil to the storage battery as charging power. This device is provided with halt signal generating circuits 203, 209, and 214 for generating a halt signal that commands a halt of supply of AC power to the primary coil, and a halting circuit for halting supply of AC power to the primary coil in response to a halt signal, the halt signal generating circuit being provided in the radio communication device. If it is necessary to make or receive a call during charging of the radio communication device, a halt signal is generated on the radio communication device side to halt charging, thereby eliminating the attractive force caused by the electromagnetic induction in effect between the radio communication device and the charger, and allowing removal of the radio communication device from the charger with a minimum of effort.
    • 公开了一种非接触充电装置,其执行充电器1的电力而不直接接触蓄电池210的充电,并且在充电器1中包括初级线圈103和用于提供AC电力的电路104,105 并且还包括在具有蓄电池210的无线电通信装置,与初级线圈103电磁耦合的次级线圈212和用于将次级线圈中产生的感应电流电力提供给蓄电池的电路211 作为充电电源。 该装置设置有用于产生停止向初级线圈供应AC电力的停止信号的停止信号发生电路203,209和214,以及响应于停止向初级线圈提供AC电力的停止电路 停止信号产生电路设置在无线电通信装置中。 如果在无线电通信装置的充电期间需要进行呼叫或接收呼叫,则在无线电通信装置侧产生停止信号以停止充电,从而消除由无线电通信装置之间的电磁感应引起的吸引力 和充电器,并且以最小的努力允许从充电器移除无线电通信装置。
    • 7. 发明授权
    • Analog-to-digital converter
    • 模数转换器
    • US4644322A
    • 1987-02-17
    • US435965
    • 1982-10-22
    • Tsuneo Fujita
    • Tsuneo Fujita
    • H03M1/36H03M1/00H03M7/16
    • H03M1/1071H03M1/361
    • A parallel comparison type A/D converter comprises a voltage divider having 2.sup.N divider junctions connected in series between a reference voltage terminal and a ground potential terminal, 2.sup.N comparators for receiving as reference voltages the outputs of the respective divider junctions, a position detection logic circuit for receiving the outputs of the comparators, an encoder for receiving the output of the position detection logic circuit, and a code converter for receiving the output of the first digital encoder. The encoder adopts the Gray code format, and the code converter converts the Gray code format into the binary code format.
    • 并联比较型A / D转换器包括:一个分压器,具有2N个分压器串联连接在一个参考电压端子和一个地电位端子之间; 2N个比较器,用于接收相应的分压器结点的输出作为参考电压,一个位置检测逻辑电路 用于接收比较器的输出,用于接收位置检测逻辑电路的输出的编码器和用于接收第一数字编码器的输出的代码转换器。 编码器采用格雷码格式,代码转换器将格雷码格式转换为二进制码格式。