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    • 2. 发明授权
    • Sintered product of silicon nitride
    • 氮化硅烧结制品
    • US5804523A
    • 1998-09-08
    • US853410
    • 1997-05-09
    • Takehiro OdaKoichi TanakaTomohiro IwaidaSentaro YamamotoShoji KohsakaMasahiro SatoHideki UchimuraKenichi Tajima
    • Takehiro OdaKoichi TanakaTomohiro IwaidaSentaro YamamotoShoji KohsakaMasahiro SatoHideki UchimuraKenichi Tajima
    • C04B35/593C04B35/587
    • C04B35/593C04B35/5935
    • 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.
    • 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。
    • 7. 发明申请
    • SIGNAL TRANSMISSION SYSTEM
    • 信号传输系统
    • US20150030064A1
    • 2015-01-29
    • US14379078
    • 2013-03-19
    • Kenichi TajimaKenji KawakamiAkihito HiraiMasanobu Hiramine
    • Kenichi TajimaKenji KawakamiAkihito HiraiMasanobu Hiramine
    • H04L25/49
    • H04L25/4902H03M5/12
    • 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.
    • 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。
    • 9. 发明申请
    • Semiconductor Integrated circuit device
    • 半导体集成电路器件
    • US20070159901A1
    • 2007-07-12
    • US11708348
    • 2007-02-21
    • Tadahiro ObaraMasatoshi HasegawaYousuke TanakaTomofumi HokariKenichi Tajima
    • Tadahiro ObaraMasatoshi HasegawaYousuke TanakaTomofumi HokariKenichi Tajima
    • G11C7/00
    • G11C7/12G11C2207/005H01L27/105H01L27/10897
    • 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.
    • 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。
    • 10. 发明授权
    • Signal transmission system
    • 信号传输系统
    • US09385900B2
    • 2016-07-05
    • US14379078
    • 2013-03-19
    • Kenichi TajimaKenji KawakamiAkihito HiraiMasanobu Hiramine
    • Kenichi TajimaKenji KawakamiAkihito HiraiMasanobu Hiramine
    • H03K7/04H04L25/49H03M5/12
    • H04L25/4902H03M5/12
    • 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.
    • 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。