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    • 4. 发明授权
    • Call processing device and method
    • 呼叫处理设备和方法
    • US07826347B2
    • 2010-11-02
    • US12411408
    • 2009-03-26
    • Ching-Hao ChenWen-Yuan Wang
    • Ching-Hao ChenWen-Yuan Wang
    • G01R31/08H04L12/56
    • H04M7/125
    • A call processing device communicating with a plurality of line cards includes a mapping table and an address table. The call processing device receives a telephone number, searches the mapping table for one index related to the received telephone number, searches the address table for one address corresponding to the sought index, rejects a call corresponding to the received telephone number if the sought address is a specially preset address, and updates one or more of the addresses of the line cards in the address table if operating modes of one or more of the line cards are changed. A call processing method is also provided.
    • 与多个线路卡通信的呼叫处理设备包括映射表和地址表。 呼叫处理设备接收电话号码,在映射表中搜索与接收到的电话号码相关的一个索引,在地址表中搜索与寻找索引相对应的一个地址,如果寻址地址为 一个特别预设的地址,并且如果一个或多个线路卡的操作模式改变,则更新地址表中的线路卡的一个或多个地址。 还提供呼叫处理方法。
    • 7. 发明申请
    • ADJUSTMENT DEVICE FOR A FRONT GUARD OF A GRIND WHEEL
    • 砂轮前轮调整装置
    • US20090197515A1
    • 2009-08-06
    • US12068002
    • 2008-01-31
    • Wen-Yuan Wang
    • Wen-Yuan Wang
    • B24B55/05
    • B24B23/02B24B55/052
    • An adjustment device for the front guard of a grinding wheel machine includes a grip and round rod. The round rod is mounted with a fastening base and one side of the fastening base is furnished with a flat surface to be attached to an inner surface of a guard plate on the front end of a transmission shaft. The flat surface of the fastening base is furnished with symmetrical position beads and screw holes so as to have the guard plate positioned and screwed in place. After the guard plate is adjusted, the grinding wheel on the transmission shaft will simultaneously change direction by changing the direction switch so that the grinding wheel is turned in a different direction.
    • 砂轮机的前防护装置的调整装置包括把手和圆杆。 圆杆安装有紧固基座,紧固基座的一侧配备有平坦表面,以附接到传动轴前端上的防护板的内表面。 紧固基座的平坦表面配有对称的位置珠和螺丝孔,以使防护板定位并拧紧就位。 在调整防护板后,传动轴上的砂轮将通过改变方向开关同时改变方向,使砂轮沿不同的方向旋转。
    • 8. 发明授权
    • CMOS voltage controlled ring oscillator
    • CMOS压控环形振荡器
    • US5365204A
    • 1994-11-15
    • US145364
    • 1993-10-29
    • John M. AngiulliArun K. GhoseRichard R. KonianSamuel R. LevineDavid MeltzerWen-Yuan WangLeon L. Wu
    • John M. AngiulliArun K. GhoseRichard R. KonianSamuel R. LevineDavid MeltzerWen-Yuan WangLeon L. Wu
    • H03K3/03H03K3/354H03B5/24
    • H03K3/354H03K3/0315
    • A variable frequency digital ring oscillator which can be formed in a small area for use in testing of chips employs a ring oscillator formed of CMOS inverters, transmission gates and capacitors and CMOS logic as a voltage controlled ring oscillator. A wide range of frequency of oscillation is achieved with small number of components. The ring oscillator circuit's oscillator frequency is controlled only by DC voltages, such as may be provided by (but not limited to) a manufacturing chip tester. The output signal of the oscillator swings between Vdd and Vss and does not need additional level translation circuits to drive CMOS logic. The ring oscillator can be composed of an odd number of CMOS inverters connected in cascade to form a loop. We provide a CMOS transmission gate with PMOS and NMOS transistor device inserted between each adjacent inverter and a MOS capacitor connected between the output of each transmission gate and the Vss supply of the ring oscillator circuit (conventionally ground). The gate voltages of the PMOS and NMOS transistors in the transmission gate are different and provide a different DC voltage between Vdd and Vss. Variation of the gate voltages of the transmission gates controls the frequency of oscillation of the circuit. The use of a plurality of cascaded delay elements between inverters achieves a wider range of oscillation frequency than possible with a single delay element.
    • 可以形成在用于芯片测试的小区域中的可变频数字环形振荡器采用由CMOS反相器,传输门和电容器形成的环形振荡器和作为压控环形振荡器的CMOS逻辑。 通过少量组件实现了宽范围的振荡。 环形振荡器电路的振荡器频率仅由直流电压控制,例如可以由(但不限于)制造芯片测试器提供。 振荡器的输出信号在Vdd和Vss之间摆动,不需要额外的电平转换电路来驱动CMOS逻辑。 环形振荡器可以由串联连接的奇数CMOS反相器组成,形成一个环路。 我们提供一个CMOS传输门,PMOS和NMOS晶体管器件插在每个相邻的反相器和连接在每个传输门的输出和环形振荡器电路的Vss电源(传统接地)之间的MOS电容器。 传输门中PMOS和NMOS晶体管的栅极电压不同,并在Vdd和Vss之间提供不同的直流电压。 传输门的栅极电压的变化控制电路的振荡频率。 在逆变器之间使用多个级联延迟元件实现比单个延迟元件可能的更宽的振荡频率范围。