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    • 3. 发明授权
    • Phase locked loop circuit
    • 锁相环电路
    • US06377127B1
    • 2002-04-23
    • US09711407
    • 2000-11-13
    • Muneo Fukaishi
    • Muneo Fukaishi
    • H03L708
    • H03L7/0891
    • In a phase locked loop circuit, a phase difference signal (an up signal and a down signal) is supplied from a phase comparator to a serial-to-parallel converting circuit, and an output of the serial-to-parallel converting circuit is supplied to an up-down counter having a count value is counted up or down in accordance with the phase difference detected by the phase comparator. A voltage controlled oscillator generates an oscillation signal having the frequency controlled in accordance with the count value of the up-down counter. Thus, since the phase difference signal is serial-to-parallel converted, the rate of the phase difference signal is lowered, so that the operation speed of the up-down counter can be relaxed. Therefore, the operation speed of the phase locked loop circuit can be elevated with elevating the operation speed of the up-down counter.
    • 在锁相环电路,相位差信号(上行信号和下行信号)从相位比较器提供给串行 - 并行转换电路,以及串行 - 并行转换电路的输出被供给 具有计数值的升降计数器根据由相位比较器检测的相位差向上或向下计数。 压控振荡器产生具有根据升降计数器的计数值进行频率控制的振荡信号。 因此,由于相位差信号是串行到并行转换,相位差信号的速率下降,从而使升降计数器的操作速度可以放宽。 因此,通过提高上下计数器的操作速度,能够提高锁相环电路的动作速度。
    • 4. 发明授权
    • Phase comparator operable at half frequency of input signal
    • 相位比较器在输入信号的一半频率下工作
    • US06314151B1
    • 2001-11-06
    • US09167733
    • 1998-10-07
    • Muneo Fukaishi
    • Muneo Fukaishi
    • H04D324
    • H03L7/0891H03D13/004H04L7/033
    • In a phase comparator, a first data fetching circuit fetches an input signal in response to a transition timing of a clock signal having a frequency about half that of the input signal, and a second data fetching circuit fetches the output signal of the first data fetching circuit in response to a transition timing of an inverted signal of the clock signal. A first exclusive OR performs an exclusive OR operation upon the input signal and the output signal of the first data fetching circuit. and a second exclusive OR circuit performs an exclusive OR operation upon the output signals of the first and second data fetching circuits. An inverter inverts the output signal of the first exclusive OR circuit. A first AND circuit performs an AND operation upon the output signal of the second data fetching circuit and the output of the exclusive OR circuit, a second AND circuit performs an AND operation upon the output signal of the first exclusive OR circuit and the output of the first AND circuit to generate a leading signal, and a third AND circuit performs an AND operation upon the output signal of the inverter and the output of the,first AND circuit to generate a lagging signal.
    • 在相位比较器中,第一数据取出电路响应于具有大约为输入信号的一半的时钟信号的时钟信号的转换定时取入输入信号,第二数据取出电路取出第一数据取出的输出信号 响应于时钟信号的反相信号的转变定时。 第一异或执行对第一数据提取电路的输入信号和输出信号的异或运算。 并且第二异或电路对第一和第二数据提取电路的输出信号执行异或运算。 逆变器反相第一异或电路的输出信号。 第一AND电路对第二数据取出电路的输出信号和异或电路的输出执行AND运算,第二AND电路根据第一异或电路的输出信号和 第一AND电路产生前导信号,第三AND电路根据反相器的输出信号和第一AND电路的输出执行AND运算,以产生滞后信号。
    • 5. 发明授权
    • Field effect transistor having a low threshold voltage shift
    • 具有低阈值电压偏移的场效应晶体管
    • US5442227A
    • 1995-08-15
    • US180058
    • 1994-01-11
    • Muneo FukaishiHikaru Hida
    • Muneo FukaishiHikaru Hida
    • H01L29/80H01L21/338H01L29/04H01L29/10H01L29/812H01L41/08H01L41/09
    • H01L29/045H01L29/1029H01L29/812
    • The main surface of a semiconductor substrate, on which a field effect transistor is formed, coincides with the (nm0) lattice plane of the substrate and drain electrode thereof is oriented to flow drain current in a direction parallel to the [mn0] or [mn0] axis, wherein n and m independently represent an arbitrary integer, provided that n and m are not 0 at the same time, and that the quotient n/m (m is not zero) is not an integer. Accordingly, the plane orientation of the substrate and the direction of the drain current have a relationship such that no piezoelectric charges are induced in the channel region of the field effect transistor. Therefore, substantially no piezoelectric charges are generated even when a stress is produced in the dielectric layer formed on the substrate. Moreover, deterioration and variation in the electric characteristics due to the variation in the thickness of the dielectric layer are minimized.
    • 其上形成有场效应晶体管的半导体衬底的主表面与衬底的(nm0)晶格面重合,并且其漏电极被定向为在平行于[m&upbar&n0]或 [&upbar&mn0] axis,其中n和m独立地表示任意整数,条件是同时n和m不为0,并且商n / m(m不为零)不是整数。 因此,衬底的平面取向和漏极电流的方向具有这样的关系,使得在场效应晶体管的沟道区域中不产生压电电荷。 因此,即使在形成在基板上的电介质层中产生应力,也基本上不产生压电电荷。 此外,由于电介质层的厚度变化引起的电特性的劣化和变化被最小化。
    • 9. 发明授权
    • Clock reproducing apparatus and method
    • 时钟重放装置及方法
    • US08184738B2
    • 2012-05-22
    • US12088358
    • 2006-09-28
    • Kazuhisa SunagaKouichi YamaguchiMuneo Fukaishi
    • Kazuhisa SunagaKouichi YamaguchiMuneo Fukaishi
    • H04L7/00
    • H04L7/033H04L25/4906
    • A common mode of a waveform of a duobinary transmission signal (IN) is set to 0 and the size of a data eye is set to Veye; and reference potentials Vref_H and Vref_L are set to the following values: Veye/√{square root over (3)}≦Vref—H≦Veye/√{square root over (2)}  (1) −Veye/√{square root over (2)}≦Vref—L≦−Veye/√{square root over (3)}  (2) More particularly, effect becomes remarkable by setting the reference potentials Vref_H and Vref_L to central values in ranges shown in Equations (1) and (2), respectively. In the central values, fluctuation (jitter) of transition data becomes the smallest, and a jitter characteristic of a reproducing clock becomes the best. Consequently, a clock reproducing apparatus in which a received clock from duobinary transmission data is reproduced with high accuracy is provide.
    • 二进制传输信号(IN)的波形的共同模式被设置为0,数据眼的大小被设置为Veye; 并且参考电位Vref_H和Vref_L设置为以下值:Veye /√{平方根超过(3)}≦̸ Vref-H≦̸ Veye /√{平方根超过(2)}(1)-Veye /√{square 根(2)}≦̸ Vref-L≦̸ -Veye /√{平方根超过(3)}(2)更具体地说,通过将参考电位Vref_H和Vref_L设置为等式 1)和(2)。 在中心值中,转换数据的波动(抖动)变得最小,并且再现时钟的抖动特性变得最好。 因此,提供了一种时钟再现装置,其中以双重传输数据的接收时钟以高精度再现。
    • 10. 发明申请
    • CLOCK REPRODUCING APPARATUS AND METHOD
    • 时钟再现设备和方法
    • US20100150289A1
    • 2010-06-17
    • US12088358
    • 2006-09-28
    • Kazuhisa SunagaKouichi YamaguchiMuneo Fukaishi
    • Kazuhisa SunagaKouichi YamaguchiMuneo Fukaishi
    • H04L7/00
    • H04L7/033H04L25/4906
    • A common mode of a waveform of a duobinary transmission signal (IN) is set to 0 and the size of a data eye is set to Veye; and reference potentials Vref_H and Vref_L are set to the following values: Veye/√{square root over (3)}≦Vref—H≦Veye/√{square root over (2)}  (1) −Veye/√{square root over (2)}≦Vref—L≦−Veye/√{square root over (3)}  (2) More particularly, effect becomes remarkable by setting the reference potentials Vref_H and Vref_L to central values in ranges shown in Equations (1) and (2), respectively. In the central values, fluctuation (jitter) of transition data becomes the smallest, and a jitter characteristic of a reproducing clock becomes the best. Consequently, a clock reproducing apparatus in which a received clock from duobinary transmission data is reproduced with high accuracy is provide.
    • 二进制传输信号(IN)的波形的共同模式被设置为0,数据眼的大小被设置为Veye; 并且参考电位Vref_H和Vref_L设置为以下值:Veye /√{平方根超过(3)}≦̸ Vref-H≦̸ Veye /√{平方根超过(2)}(1)-Veye /√{square 根(2)}≦̸ Vref-L≦̸ -Veye /√{平方根超过(3)}(2)更具体地说,通过将参考电位Vref_H和Vref_L设置为等式 1)和(2)。 在中心值中,转换数据的波动(抖动)变得最小,并且再现时钟的抖动特性变得最好。 因此,提供了一种时钟再现装置,其中以双重传输数据的接收时钟以高精度再现。