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    • 132. 发明授权
    • Offset cancellation circuit
    • 偏移消除电路
    • US5977892A
    • 1999-11-02
    • US648645
    • 1996-05-16
    • Yuichi NakataniSatoshi TakahashiMasami Aiura
    • Yuichi NakataniSatoshi TakahashiMasami Aiura
    • H03K17/16H03K17/687H03M1/06
    • H03K17/162H03K17/6872
    • An offset cancellation circuit(1) for an analog switch(10) is provided which substantially reduces the offset voltage induced by the analog switch circuit. The circuit(1) comprising a second P-channel transistor(2) and a third N-channel transistor(4) connected to each other in series, the drains of the second P-channel transistor and the third N-channel transistor being connected to the output terminal; a second N-channel transistor(3) and a third P-channel transistor(5) connected to each other in series, the drains of the second N-channel transistor and the third P-channel transistor being connected to the output terminal; the gate of the second P-channel transistor is connected to the gate of the N-channel transistor; and the gate of the second N-channel transistor is connected to the gate of the P-channel transistor.
    • 提供了用于模拟开关(10)的偏移消除电路(1),其大大减少了由模拟开关电路引起的偏移电压。 电路(1)包括彼此串联连接的第二P沟道晶体管(2)和第三N沟道晶体管(4),第二P沟道晶体管和第三N沟道晶体管的漏极被连接 到输出端子; 连接到第二N沟道晶体管和第三P沟道晶体管的第二N沟道晶体管和第三P沟道晶体管,第二N沟道晶体管和第三P沟道晶体管的漏极连接到输出端; 第二P沟道晶体管的栅极连接到N沟道晶体管的栅极; 并且第二N沟道晶体管的栅极连接到P沟道晶体管的栅极。
    • 135. 发明授权
    • Electrophoresis analyzer with wavelength selective detection
    • 具有波长选择性检测的电泳分析仪
    • US5534703A
    • 1996-07-09
    • US220261
    • 1994-03-30
    • Hideki KambaraTakashi AnazawaSatoshi TakahashiKatsuhiko Murakami
    • Hideki KambaraTakashi AnazawaSatoshi TakahashiKatsuhiko Murakami
    • G01J3/427G01N21/27G01N21/64G01N27/447G01N27/26
    • G01N21/6456G01N27/44721
    • An electrophoresis analyzer includes a light detector for detecting images of a linear fluorescence emitting region, the linear fluorescence emitting region including a plurality of fluorescence emitting points disposed along a straight line, each of the fluorescence emitting points being a point at which samples emit light including a plurality of wavelengths, the light detector including a line sensor, the line sensor including a plurality of photopixels disposed along a straight line, the photopixels constituting a detection surface of the line sensor, an image forming unit for receiving the light emitted by the samples at the fluorescence emitting points and forming a plurality of images of each of the fluorescence emitting points on the detection surface of the line sensor at mutually different positions disposed at a predetermined interval along the straight line along which the photopixels are disposed, and a filter unit disposed between the linear fluorescence emitting region and the light detector for selectively filtering the light emitted by the samples at the fluorescence emitting points such that the images of each of the fluorescence emitting points are formed by light including mutually different ones of the wavelengths.
    • 电泳分析仪包括用于检测线性荧光发射区域的图像的光检测器,所述线性荧光发射区域包括沿着直线设置的多个荧光发射点,每个荧光发射点是样品发射的点,包括 多个波长,所述光检测器包括线传感器,所述线传感器包括沿着直线设置的多个照相像素,构成所述线传感器的检测表面的所述光像素,用于接收由所述样本发射的光的图像形成单元 在荧光发射点处,并且沿着沿着设置有像素的直线以预定间隔设置的相互不同的位置,在线传感器的检测表面上形成每个荧光发射点的多个图像,以及滤光器单元 设置在线性荧光发射区域a之间 nd光检测器,用于在荧光发射点选择性地过滤由样品发射的光,使得每个荧光发射点的图像由包括相互不同的波长的光形成。
    • 137. 发明授权
    • Spread spectrum communication system using two-predetermined-code
pseudo-noise signals
    • 使用两个预定码伪噪声信号的扩频通信系统
    • US5469470A
    • 1995-11-21
    • US177328
    • 1994-01-04
    • Satoshi Takahashi
    • Satoshi Takahashi
    • H04J13/00H04B1/707H04L9/00H04J13/02
    • H04B1/7073H04J13/16
    • A transmission terminal modulates, for a first state of given data signal, a non-return-to-zero code pseudo-noise signal onto a carrier band. Further, the terminal modulates, for a second state of the given data signal a Manchester-code pseudo-noise signal onto the carrier band. The terminal then sends a communication signal comprising the non-return-to-zero-code pseudo-noise signal and the Manchester-code pseudo-noise signal. A receiving terminal receives the communication signal and then uses, as an error signal, a signal resulting from multiplication of first and second correlation signals, the first correlation signal concerning the correlation between the communication signal, a reference pseudo-noise signal, and a clock signal which is used for generating the reference pseudo-noise signal, and the second correlation signal concerning the correlation between the communication signal and the reference pseudo-noise signal. The receiving terminal then demodulates the communication signal by comparing between magnitudes of the first and second correlation signals.
    • 对于给定数据信号的第一状态,传输终端对载波频带上的非归零码伪噪声信号进行调制。 此外,对于给定数据信号的第二状态,终端在载波频带上调制曼彻斯特编码伪噪声信号。 终端然后发送包括非归零码伪噪声信号和曼彻斯特码伪噪声信号的通信信号。 接收终端接收通信信号,然后使用由第一和第二相关信号相乘产生的信号作为误差信号,关于通信信号,参考伪噪声信号和时钟之间的相关性的第一相关信号 用于产生参考伪噪声信号的信号,以及涉及通信信号和参考伪噪声信号之间的相关性的第二相关信号。 接收终端然后通过比较第一和第二相关信号的幅度来解调通信信号。
    • 138. 发明授权
    • Method for measuring microparticles, quantitative measuring method
therefor and instrument for measuring microparticles
    • 测量微粒的方法,其定量测量方法和测量微粒的仪器
    • US5308990A
    • 1994-05-03
    • US882954
    • 1992-05-14
    • Satoshi TakahashiDaizo TokinagaKazunori Okano
    • Satoshi TakahashiDaizo TokinagaKazunori Okano
    • F02B75/02G01N15/14
    • G01N15/1459F02B2075/027G01N2015/0092G01N2015/1486G01N2021/6439
    • A microparticle measuring method according to the present invention, by which the number of fluorescent microparticles is counted and the fluorescent microparticles are analyzed, includes the steps of introducing fluorescent microparticles into a narrow flow path almost one after another; irradiating the fluorescent microparticles in the narrow flow path with excitation light; detecting a signal pulse produced by detection of a single photon of fluorescence generated by the irradiation with the excitation light; and recognizing existence of the fluorescent microparticle, starting from the number of signal pulses measured per predetermined standard period, and further includes the step of obtaining the number of signal pulses per standard period with a time interval shorter than the standard period. It further includes the step of counting successively the number of signal pulses generated in the predetermined standard period to recognize existence of the fluorescent microparticle, when the count value exceeds a predetermined threshold, and the kind of the fluorescent microparticles is estimated from the count value. Particularly by using microparticles having a diameter smaller than 0.1 .mu.m as label material, reaction efficiency of the label material is increased, stability of the binding with the material to be measured is raised, and the material to be measured can be detected with a high precision and a high sensitivity.
    • 根据本发明的微粒测量方法,其中计数荧光微粒的数量并分析荧光微粒,包括几乎一个接一个地将荧光微粒引入窄流路的步骤; 用激发光照射窄流路中的荧光微粒; 检测通过用激发光照射产生的荧光的单个光子的检测而产生的信号脉冲; 并且从每个预定标准周期测量的信号脉冲数开始识别荧光微粒的存在,并且还包括以比标准周期短的时间间隔获得每标准周期的信号脉冲数的步骤。 还包括当计数值超过预定阈值时,连续计数在预定标准周期中产生的信号脉冲数,以识别荧光微粒的存在的步骤,并根据计数值估计荧光微粒的种类。 特别是通过使用直径小于0.1μm的微粒作为标签材料,标签材料的反应效率提高,与被测定材料的结合的稳定性提高,可以高检出被测量的材料 精度高,灵敏度高。