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    • 61. 发明授权
    • Noise reducing apparatus
    • 降噪装置
    • US4281295A
    • 1981-07-28
    • US938009
    • 1978-08-30
    • Satoshi NishimuraTetsuo ShimizuKenichi SatoTakehiko Asano
    • Satoshi NishimuraTetsuo ShimizuKenichi SatoTakehiko Asano
    • G11B5/027G11B20/02G11B20/04H03G7/00H03G9/02H04B1/64
    • H03G9/025H04B1/64
    • A frequency region split type noise reducing apparatus, comprising a compressor and an expander; the compressor (or the expander) including a plurality of frequency region splitting filters for splitting the frequency range of the signal into a plurality of frequency regions, a plurality of level sensors for detecting the levels of the signals in the respective frequency regions split by the plurality of filters, a plurality of voltage controlled amlifiers responsive to the level detected outputs of the corresponding level sensors for linearly compressing (or expanding) in terms of a logarithmic scale the dynamic range of the signal, and an adder for adding the outputs as compressed by the voltage controlled amplifiers for providing a composite signal, and the expander (or the compressor) including an amplifier and a switch circuit for connecting the compressor (or expander) to the amplifier to form a negative feedback circuit, whereby the expander (or the compressor) is implemented by a negative feedback amplifier including the amplifier and the negative feedback circuit.
    • 一种频率分离式噪声降低装置,包括压缩机和膨胀机; 压缩机(或扩展器)包括用于将信号的频率范围分割为多个频率区域的多个频域分离滤波器;多个电平传感器,用于检测由所述频域分割的各个频率区域中的信号电平 多个滤波器,响应于对应电平传感器的电平检测输出的多个电压控制放大器,用于以对数标度线性压缩(或扩展)信号的动态范围,以及用于将输出相加的压缩器 通过用于提供复合信号的电压控制放大器和包括放大器和用于将压缩机(或扩展器)连接到放大器)的开关电路的扩展器(或压缩机)形成负反馈电路,由此扩展器(或 压缩器)由包括放大器和负反馈电路的负反馈放大器实现。
    • 67. 发明授权
    • Photodiode array including channel surrounding part
    • 光电二极管阵列包括通道周围部分
    • US08610231B2
    • 2013-12-17
    • US13116525
    • 2011-05-26
    • Kazuhisa YamamuraKenichi Sato
    • Kazuhisa YamamuraKenichi Sato
    • H01L31/107
    • H01L27/1446H01L27/14H01L27/14603H01L27/14605H01L27/14636H01L31/107
    • A photodiode array 1 has a plurality of photodetector channels 10 which are formed on an n-type substrate 2 having an n-type semiconductor layer 12, with a light to be detected being incident to the plurality of photodetector channels 10. The photodiode array 1 comprises: a p−-type semiconductor layer 13 formed on the n-type semiconductor layer 12 of the substrate 2; resistors 4 each of which is provided to each of the photodetector channels 10 and is connected to a signal conductor 3 at one end thereof; and an n-type separating part 20 formed between the plurality of photodetector channels 10. The p−-type semiconductor layer 13 forms a pn junction at the interface between the substrate 2, and comprises a plurality of multiplication regions AM for avalanche multiplication of carriers produced by the incidence of the light to be detected so that each of the multiplication regions corresponds to each of the photodetector channels. The separating part 20 is formed so that each of the multiplication regions AM of the p−-type semiconductor layer 13 corresponds to each of the photodetector channels 10.
    • 光电二极管阵列1具有多个光电检测器通道10,其形成在具有n型半导体层12的n型衬底2上,待检测的光入射到多个光电检测器通道10.光电二极管阵列1 包括:形成在基板2的n型半导体层12上的p型半导体层13; 电阻器4,每个电阻器4设置在每个光电检测器通道10上,并且在其一端连接到信号导体3; 以及形成在多个光电检测器通道10之间的n型分离部分20.p型半导体层13在衬底2之间的界面处形成pn结,并且包括用于载流子雪崩乘法的多个乘法区域AM 由所检测的光的入射产生,使得每个乘法区域对应于每个光电检测器通道。 分离部20被形成为使得p型半导体层13的每个乘法区域AM对应于每个光电检测器通道10。
    • 70. 发明申请
    • IRON-BASED SINTERED ALLOY FOR VALVE SEAT, AND VALVE SEAT FOR INTERNAL COMBUSTION ENGINE
    • 用于阀座的基于铁的烧结合金和用于内燃机的阀座
    • US20110023808A1
    • 2011-02-03
    • US12935408
    • 2009-03-25
    • Kenichi SatoHiroshi OshigeTakeshi Haniu
    • Kenichi SatoHiroshi OshigeTakeshi Haniu
    • F01L3/00B32B15/02
    • F01L3/02C22C1/0491C22C19/07C22C33/0285C22C38/44C22C38/52F01L2101/00
    • It is an object of the present invention to provide a valve seat product in which the amount of hard particles added to improve the wear resistance of a valve seat of an internal combustion engine is increased, and is excellent in the mechanical strength and machinability. In order to achieve the object, an iron-based sintered alloy material for a valve seat is employed which is made to contain a first hard particle having an average primary particle diameter of 5 to 20 μm and a second hard particle having an average primary particle diameter of 20 to 150 μm in a texture, wherein a particle size distribution curve measured by laser diffraction scattering analysis has N peaks (N is an integer equal to or larger than 2) and when particle diameters corresponding to the peak top positions are denoted as DT1 to DTN, a peak top particle diameter difference between neighboring DTn-1 and DTn(|DTn-1−DTn|: n is an integer equal to or larger than 2 and equal to or smaller than N) is in the range of 15 to 100 μm in at least one neighboring DTn-1 and DTn; and the total area ratio occupied by both of the first hard particle and the second hard particle constituting the mixed hard particle in the texture of the iron-based sintered alloy is 10 to 60% by area.
    • 本发明的目的是提供一种阀座产品,其中增加了用于提高内燃机的阀座的耐磨性的添加的硬质颗粒的量,并且机械强度和机械加工性优异。 为了达到上述目的,使用了一种用于阀座的铁基烧结合金材料,其被制成含有平均一次粒径为5〜20μm的第一硬质粒子和具有平均一次粒子的第二硬质粒子 直径为20〜150μm,其中通过激光衍射散射分析测量的粒度分布曲线具有N个峰(N是等于或大于2的整数),并且当与峰顶位置相对应的粒径被表示为 DT1〜DTN,相邻的DTn-1与DTn(| DTn-1-DTn |:n为2以上且等于或小于N的整数)之间的顶峰粒径差为15 在至少一个相邻的DTn-1和DTn中至100μm; 并且构成混合硬质粒子的第一硬质粒子和构成混合硬质粒子的第二硬质粒子的总面积比在铁基烧结合金的织构中为10〜60%。