公开(公告)号：US5801589A

公开(公告)日：1998-09-01

申请号：US781519

申请日：1997-01-09

申请人： Kenichi Tajima ,  Kenji Itoh ,  Shuji Nishimura ,  Masayuki Doi ,  Akio Iida

发明人： Kenichi Tajima ,  Kenji Itoh ,  Shuji Nishimura ,  Masayuki Doi ,  Akio Iida

IPC分类号： H03B28/00 ,  H03L7/18 ,  H03L7/183 ,  H03L7/00 ,  H03B27/00

CPC分类号： H03L7/1806

摘要： A variable divider in which a dividing number setting parameter can be set is provided in a reference oscillator. When a frequency setting parameter is selected so that a DDS will not output a spurious at a specified level or at a level higher than the specified level within an output band of an PLL in response to an output frequency from the PLL, both a conversion function setting parameter for a variable divider in the PLL and a dividing number setting parameter for a variable divider in the reference oscillator are adjusted so that the output frequency and the selected frequency setting parameter are satisfied.

摘要翻译： 在基准振荡器中设置有可以设定分频数设定参数的可变分频器。 当选择频率设定参数时，响应于来自PLL的输出频率，DDS将不会以PLL的输出频带内的指定电平或高于指定电平的电平输出杂散，转换功能 对PLL中的可变分频器的设定参数和参考振荡器中的可变分频器的分频数设定参数进行调整，使得输出频率和所选择的频率设定参数得到满足。

公开(公告)号：US20150030064A1

公开(公告)日：2015-01-29

申请号：US14379078

申请日：2013-03-19

申请人： Kenichi Tajima ,  Kenji Kawakami ,  Akihito Hirai ,  Masanobu Hiramine

发明人： Kenichi Tajima ,  Kenji Kawakami ,  Akihito Hirai ,  Masanobu Hiramine

IPC分类号： H04L25/49

CPC分类号： H04L25/4902 ,  H03M5/12

摘要： A signal transmission system has a modulation signal converter 1 that generates a modulation signal using a Manchester code with a duty ratio of 50% in accordance with transmission data; a clock generator 6 that generates a clock with the amount of delay with respect to the rising or falling edge of the modulation signal; and a data detector 5 that generates received data by sampling the modulation signal in synchronization with the clock. Since the modulation signal converter 1 generates the modulation signal by combining the Manchester code with the duty ratio of 50%, its duty ratio is always 50% independently of the transmission data, thereby preventing the DC offset of the modulation signal on the receiving side. Accordingly, it offers an advantage of achieving good communication quality with a simple circuit configuration without producing the DC offset in the modulation signal on the receiving side.

摘要翻译： 信号传输系统具有调制信号转换器1，其根据传输数据使用占空比为50％的曼彻斯特码产生调制信号; 时钟发生器6，生成相对于调制信号的上升沿或下降沿的延迟量的时钟; 以及数据检测器5，其通过与时钟同步地对调制信号进行采样来生成接收数据。 由于调制信号转换器1通过将曼彻斯特码与占空比为50％组合来产生调制信号，所以与发送数据无关地占空比始终为50％，从而防止了接收侧的调制信号的直流偏移。 因此，它提供了通过简单的电路配置实现良好的通信质量的优点，而不会在接收侧的调制信号中产生DC偏移。

公开(公告)号：US20070247244A1

公开(公告)日：2007-10-25

申请号：US11629531

申请日：2005-03-07

申请人： Masaomi Tsuru ,  Kenji Kawakami ,  Kenichi Tajima ,  Moriyasu Miyazaki ,  Kazuhiro Miyamoto ,  Masafumi Nakane

发明人： Masaomi Tsuru ,  Kenji Kawakami ,  Kenichi Tajima ,  Moriyasu Miyazaki ,  Kazuhiro Miyamoto ,  Masafumi Nakane

IPC分类号： H03B5/12 ,  H03B5/18

CPC分类号： H03H11/44 ,  H03B5/1203 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1293 ,  H03B2200/0042 ,  H03H11/28 ,  H03H11/481

摘要： A voltage-controlled oscillator has a tuned circuit for controlling the oscillation frequency. The tuned circuit has a variable-capacitance element whose capacitance varies in response to a control voltage and a negative capacitance circuit whose impedance frequency characteristics have opposite characteristics to those of a normal capacitance, and which is connected to the variable-capacitance element. The configuration enables increasing the variation ratio corresponding to the control voltage of the combined capacitance composed of the variable-capacitance element and negative capacitance circuit, thereby broadening the oscillation frequency band.

摘要翻译： 压控振荡器具有用于控制振荡频率的调谐电路。 调谐电路具有可变电容元件，其电容响应于阻抗频率特性与正常电容具有相反特性的控制电压和负电容电路而变化，并且连接到可变电容元件。 该配置能够增加与由可变电容元件和负电容电路组成的组合电容的控制电压相对应的变化率，从而使振荡频带变宽。

公开(公告)号：US20070159901A1

公开(公告)日：2007-07-12

申请号：US11708348

申请日：2007-02-21

申请人： Tadahiro Obara ,  Masatoshi Hasegawa ,  Yousuke Tanaka ,  Tomofumi Hokari ,  Kenichi Tajima

发明人： Tadahiro Obara ,  Masatoshi Hasegawa ,  Yousuke Tanaka ,  Tomofumi Hokari ,  Kenichi Tajima

IPC分类号： G11C7/00

CPC分类号： G11C7/12 ,  G11C2207/005 ,  H01L27/105 ,  H01L27/10897

摘要： A DRAM whose operation is sped up and power consumption is reduced is provided. A pair of precharge MOSFETs for supplying a precharge voltage to a pair of input/output nodes of a CMOS sense amplifier is provided; the pair of input/output nodes are connected to a complementary bit-line pair via a selection switch MOSFET; a first equalize MOSFET is provided between the complementary bit-line pair for equalizing them; a memory cell is provided between one of the complementary bit-line pair and a word line intersecting with it; gate insulators of the selection switch MOSFETs and first equalize MOSFET are formed by first film thickness; a gate insulator of the precharge MOSFET is formed by second film thickness thinner than the first film thickness; a precharge signal corresponding to a power supply voltage is supplied to the precharge MOSFET; and an equalize signal and a selection signal corresponding to a boost voltage are supplied to the first equalize MOSFET and the selection switch MOSFET, respectively.

摘要翻译： 提供了其操作加快并且功耗降低的DRAM。 提供一对用于向CMOS读出放大器的一对输入/输出节点提供预充电电压的预充电MOSFET; 一对输入/输出节点经由选择开关MOSFET连接到互补位线对; 在互补位线对之间提供第一均衡MOSFET以使它们均衡; 在互补位线对之一和与其相交的字线之间提供存储单元; 选择开关MOSFET和第一均衡MOSFET的栅极绝缘体由第一膜厚度形成; 预充电MOSFET的栅极绝缘体由比第一膜厚度薄的第二膜厚形成; 对应于电源电压的预充电信号被提供给预充电MOSFET; 并且将均衡信号和对应于升压电压的选择信号分别提供给第一均衡MOSFET和选择开关MOSFET。

公开(公告)号：US5885916A

公开(公告)日：1999-03-23

申请号：US931499

申请日：1997-09-16

申请人： Kenichi Tajima ,  Hideki Uchimura ,  Koichi Tanaka ,  Shoji Kohsaka ,  Hiroshi Maruyama

发明人： Kenichi Tajima ,  Hideki Uchimura ,  Koichi Tanaka ,  Shoji Kohsaka ,  Hiroshi Maruyama

IPC分类号： C04B35/584 ,  C04B35/593 ,  C04B35/622 ,  C04B41/50 ,  C04B41/87 ,  C23C16/511 ,  H01B3/12 ,  H01J23/40 ,  H01P1/08 ,  B32B18/00

CPC分类号： C04B41/009 ,  C04B35/584 ,  C04B35/593 ,  C04B35/5935 ,  C04B35/62222 ,  C04B41/5031 ,  C04B41/5042 ,  C04B41/5063 ,  C04B41/87 ,  C23C16/511 ,  H01B3/12 ,  H01J23/40 ,  H01P1/08 ,  H01J2223/40

摘要： A dielectric material having a low dielectric loss factor for high-frequency use, which comprises a sintered product of silicon nitride chiefly composed of silicon nitride and containing at least oxygen as an impurity component or oxygen as an impurity component and a compound of an element of the Group 3a of periodic table, wherein said sintered product contains aluminum in an amount which is not larger than 2% by weight reckoned as an oxide thereof having relative densities of not smaller than 97% and has a dielectric loss factor at 10 GHz ofnot larger than 5.times.10.sup.-4. The dielectric material has excellent mechanical properties such as large strength and excellent chemical stability, features small dielectric loss factor in high-frequency regions, and is suited for use as a material for high-frequency oscillators, antennas, filters and electronic circuit boards. In particular, those dielectric materials are suited for use as window materials for introducing high frequencies in a high-frequency plasma-generating CVD apparatus, a microwave wave output unit and an oscillator.

摘要翻译： 一种具有低介电损耗因子用于高频用途的电介质材料，其包括主要由氮化硅组成的氮化硅和至少含有氧作为杂质成分或氧作为杂质成分的烧结体，以及元素的化合物 元素周期表的第3a族，其中所述烧结产物含有不大于2重量％的铝，其相对密度不低于97％且其10千兆赫的介电损耗系数不大 超过5x10-4。 电介质材料具有优异的机械性能，例如强度高，化学稳定性优异，在高频区域具有小的介电损耗因子，适用于高频振荡器，天线，滤波器和电子电路板的材料。 特别地，这些介电材料适合用作在高频等离子体产生CVD装置，微波波输出单元和振荡器中引入高频的窗口材料。

公开(公告)号：US5804523A

公开(公告)日：1998-09-08

申请号：US853410

申请日：1997-05-09

申请人： Takehiro Oda ,  Koichi Tanaka ,  Tomohiro Iwaida ,  Sentaro Yamamoto ,  Shoji Kohsaka ,  Masahiro Sato ,  Hideki Uchimura ,  Kenichi Tajima

发明人： Takehiro Oda ,  Koichi Tanaka ,  Tomohiro Iwaida ,  Sentaro Yamamoto ,  Shoji Kohsaka ,  Masahiro Sato ,  Hideki Uchimura ,  Kenichi Tajima

IPC分类号： C04B35/593 ,  C04B35/587

CPC分类号： C04B35/593 ,  C04B35/5935

摘要： A sintered product of silicon nitride containing not smaller than 70 mol % of a .beta.-silicon nitride as well as an element of the Group 3a at least including Lu of periodic table and impurity oxygen, wherein when the content of the element of the Group 3a of periodic table and the content of the impurity oxygen are, respectively, expressed being reckoned as the amount of an oxide of the element of the Group 3a of periodic table (RE.sub.2 O.sub.3) and as the amount of SiO.sub.2 of impurity oxygen, their total amount is from 2 to 30 mol %, the molar ratio (SiO.sub.2 /RE.sub.2 O.sub.3) of the amount of the element of the Group 3a of periodic table reckoned as the oxide (RE.sub.2 O.sub.3) thereof to the amount of impurity oxygen reckoned as SiO.sub.2 is from 1.6 to 10, and the intergranular phase of the sintered product chiefly comprises a crystal phase consisting of the element of the Group 3a of periodic table, silicon and oxygen and a process for producing the same. The sintered product has a large strength from room temperature through up to high temperatures and maintains excellent resistance against oxidation even at high temperatures, and exhibits excellent resistance against creeping and excellent breaking toughness.

摘要翻译： 包含不小于70mol％的β-氮化硅的氮化硅的烧结产品以及至少包括Lu的元素周期表和杂质氧的第3a族的元素，其中当第3a族元素的含量 的周期表和杂质氧的含量分别表示为元素周期表（RE 2 O 3）的第3a族元素的氧化物的量和杂质氧的SiO 2的量，它们的总量是 2〜30摩尔％时，作为氧化物（RE 2 O 3）的元素周期表中的元素的量与作为SiO 2计算的杂质氧的量的摩尔比（SiO 2 / RE 2 O 3）为1.6〜10 ，并且烧结体的晶间相主要包含由元素周期表第3a族元素，硅和氧组成的结晶相及其制造方法。 该烧结体从室温至高温具有很大的强度，即使在高温下也能保持优异的抗氧化性，并且具有优异的抗蠕变性和优异的断裂韧性。

公开(公告)号：US09385900B2

公开(公告)日：2016-07-05

申请号：US14379078

申请日：2013-03-19

申请人： Kenichi Tajima ,  Kenji Kawakami ,  Akihito Hirai ,  Masanobu Hiramine

发明人： Kenichi Tajima ,  Kenji Kawakami ,  Akihito Hirai ,  Masanobu Hiramine

IPC分类号： H03K7/04 ,  H04L25/49 ,  H03M5/12

CPC分类号： H04L25/4902 ,  H03M5/12

摘要： A signal transmission system has a modulation signal converter 1 that generates a modulation signal using a Manchester code with a duty ratio of 50% in accordance with transmission data; a clock generator 6 that generates a clock with the amount of delay with respect to the rising or falling edge of the modulation signal; and a data detector 5 that generates received data by sampling the modulation signal in synchronization with the clock. Since the modulation signal converter 1 generates the modulation signal by combining the Manchester code with the duty ratio of 50%, its duty ratio is always 50% independently of the transmission data, thereby preventing the DC offset of the modulation signal on the receiving side. Accordingly, it offers an advantage of achieving good communication quality with a simple circuit configuration without producing the DC offset in the modulation signal on the receiving side.

摘要翻译： 信号传输系统具有调制信号转换器1，其根据传输数据使用占空比为50％的曼彻斯特码产生调制信号; 时钟发生器6，其产生相对于调制信号的上升沿或下降沿的延迟量的时钟; 以及数据检测器5，其通过与时钟同步地对调制信号进行采样来生成接收数据。 由于调制信号转换器1通过将曼彻斯特码与占空比为50％组合来产生调制信号，所以与发送数据无关地占空比始终为50％，从而防止了接收侧的调制信号的直流偏移。 因此，它提供了通过简单的电路配置实现良好的通信质量的优点，而不会在接收侧的调制信号中产生DC偏移。

公开(公告)号：US08035026B2

公开(公告)日：2011-10-11

申请号：US10570569

申请日：2004-08-25

申请人： Kenichi Tajima

发明人： Kenichi Tajima

IPC分类号： H01L35/22

CPC分类号： H01L35/16 ,  C22C12/00 ,  H01L23/38 ,  H01L35/34 ,  H01L2924/0002 ,  H01L2924/00

摘要： T provide an N type thermoelectric material having figure of the merit improved to be comparable to or higher than that of P type thermoelectric material, the N type thermoelectric material of the present invention contains at least one kind of Bi and Sb and at least one kind of Te and Se as main components, and contains bromine (Br) and iodine (I) to have carrier in such a concentration that corresponds to the contents of bromine (Br) and iodine (I).

摘要翻译： T提供具有改善了与P型热电材料相当或更高的品质因数的N型热电材料，本发明的N型热电材料包含至少一种Bi和Sb以及至少一种 的Te和Se为主要成分，并含有溴（Br）和碘（I），其载体的浓度对应于溴（Br）和碘（I）的含量。

公开(公告)号：US08004324B2

公开(公告)日：2011-08-23

申请号：US12159327

申请日：2007-02-05

申请人： Kenichi Tajima ,  Ryoji Hayashi ,  Masafumi Nakane

发明人： Kenichi Tajima ,  Ryoji Hayashi ,  Masafumi Nakane

IPC分类号： H03L7/06

CPC分类号： H03L7/1976

摘要： Provided is a phase-locked loop frequency synthesizer, including: a reference oscillator; a voltage controlled oscillator; a variable frequency divider that divides the high frequency signal in frequency to output a feedback signal; a phase comparator that compares the reference signal and the feedback signal with each other to output a phase comparison signal; a loop filter that outputs a control signal of the voltage controlled oscillator based on the phase comparison signal; and a frequency/phase control circuit that generates frequency division number control data in synchronism with any one of the feedback signal and the reference signal based on setting data which is input from an external to give an output frequency and setting data which is input from the external to give a phase to the reference signal, to thereby output the frequency division number control data to the variable frequency divider.

摘要翻译： 提供了一种锁相环频率合成器，包括：参考振荡器; 压控振荡器; 一个可变频分频器，用于分频频率的高频信号以输出反馈信号; 相位比较器，用于将参考信号和反馈信号彼此进行比较，以输出相位比较信号; 环路滤波器，其基于相位比较信号输出压控振荡器的控制信号; 以及频率/相位控制电路，其基于从外部输入的设置数据产生与反馈信号和参考信号中的任何一个同步的分频数控制数据，以给出输出频率和从该输入信号输入的设置数据 外部给予参考信号的相位，从而将分频数控制数据输出到可变分频器。

公开(公告)号：US20100171532A1

公开(公告)日：2010-07-08

申请号：US12159327

申请日：2007-02-05

申请人： Kenichi Tajima ,  Ryoji Hayashi ,  Masafumi Nakane

发明人： Kenichi Tajima ,  Ryoji Hayashi ,  Masafumi Nakane

IPC分类号： H03L7/06 ,  H03L7/00

CPC分类号： H03L7/1976

摘要： Provided is a phase-locked loop frequency synthesizer, including: a reference oscillator; a voltage controlled oscillator; a variable frequency divider that divides the high frequency signal in frequency to output a feedback signal; a phase comparator that compares the reference signal and the feedback signal with each other to output a phase comparison signal; a loop filter that outputs a control signal of the voltage controlled oscillator based on the phase comparison signal; and a frequency/phase control circuit that generates frequency division number control data in synchronism with any one of the feedback signal and the reference signal based on setting data which is input from an external to give an output frequency and setting data which is input from the external to give a phase to the reference signal, to thereby output the frequency division number control data to the variable frequency divider.

摘要翻译： 提供了一种锁相环频率合成器，包括：参考振荡器; 压控振荡器; 一个可变频分频器，用于分频频率的高频信号以输出反馈信号; 相位比较器，用于将参考信号和反馈信号彼此进行比较，以输出相位比较信号; 环路滤波器，其基于相位比较信号输出压控振荡器的控制信号; 以及频率/相位控制电路，其基于从外部输入的设置数据产生与反馈信号和参考信号中的任何一个同步的分频数控制数据，以给出输出频率和从该输入信号输入的设置数据 外部给予参考信号的相位，从而将分频数控制数据输出到可变分频器。