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    • 1. 发明授权
    • Actuator device and liquid-jet head
    • 执行机构和液体喷头
    • US07481519B2
    • 2009-01-27
    • US11756995
    • 2007-06-01
    • Masato ShimadaTakeshi Saito
    • Masato ShimadaTakeshi Saito
    • B41J2/295
    • H01L27/20B41J2/14233B41J2002/14491B41J2202/11H01L41/0973
    • An actuator device includes a plurality of piezoelectric elements formed on a surface of a substrate. Each piezoelectric element is configured of a piezoelectric layer, an upper electrode, and a lower electrode that is formed across the plurality of piezoelectric elements. The actuator device also includes a thin film portion provided to a region in the lower electrode between each adjacent two of the piezoelectric elements. The thin film portion has a thickness smaller than that of a region in the lower electrode provided to each piezoelectric element. The actuator device also includes a concave portion provided to the boundary portion between each thin film portion and the piezoelectric element adjacent thereto. In the actuator device, the inner surface and an edge of the opening, which is opposite to the adjacent piezoelectric element, of the concave portion are formed into curved surfaces.
    • 致动器装置包括形成在基板的表面上的多个压电元件。 每个压电元件由跨越多个压电元件的压电层,上电极和下电极构成。 致动器装置还包括设置在每个相邻的两个压电元件之间的下电极中的区域的薄膜部分。 薄膜部分的厚度小于设置在每个压电元件上的下电极的区域的厚度。 致动器装置还包括设置在每个薄膜部分和与其相邻的压电元件之间的边界部分的凹部。 在致动器装置中,凹部的与相邻的压电元件相反的开口的内表面和边缘形成为曲面。
    • 3. 发明授权
    • Apparatus and method for generating random numbers
    • 用于产生随机数的装置和方法
    • US08234322B2
    • 2012-07-31
    • US11058725
    • 2005-02-14
    • Takeshi Saito
    • Takeshi Saito
    • G06F7/58
    • G06F1/02G06F7/588
    • The present invention relates to a random-number generating apparatus and method for generating physical random numbers in accordance with noises randomly generated by a noise generating element, and allows for generating true random numbers at a high speed and uniformizing the generation frequency of each random number value, even in a simplified circuit configuration. The random-number generating apparatus is operable to amplify a waveform based on thermal noises generated in a thermal-noise generating element, and generate a random pulse at the time when the amplified output signal exceeds a given threshold from the state of being less than the threshold. The random-number generating apparatus is also provided with a reference-pulse generator for generating a reference pulse having a constant period, and a timer for measuring a time interval between the reference pulse and the random pulse. The measured value in the timer is output as a random number value.
    • 本发明涉及一种随机数生成装置和方法,用于根据由噪声产生元件随机产生的噪声产生物理随机数,并允许高速生成真随机数并使每个随机数的产生频率均匀化 即使在简化的电路配置中也是如此。 随机数产生装置可操作以基于在热噪声产生元件中产生的热噪声来放大波形,并且在放大的输出信号超过给定阈值时从随机脉冲的小于 阈。 随机数产生装置还设置有用于产生具有恒定周期的参考脉冲的参考脉冲发生器和用于测量参考脉冲和随机脉冲之间的时间间隔的定时器。 定时器中的测量值作为随机数值输出。