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    • 1. 发明授权
    • Vibration actuator with two vibration modes
    • 具有两种振动模式的振动执行器
    • US06611081B1
    • 2003-08-26
    • US09658760
    • 2000-09-08
    • Mitsuhiro OkazakiTomoaki SuzukiNobuyoshi NasuTadao TakagiTsuyoshi MatsumotoIsao SugayaTunemi Gonda
    • Mitsuhiro OkazakiTomoaki SuzukiNobuyoshi NasuTadao TakagiTsuyoshi MatsumotoIsao SugayaTunemi Gonda
    • H01L4108
    • H01L41/0906
    • A vibration actuator includes a vibration element, which simultaneously generates a radial symmetric expansion vibration mode in which it expands and contracts in the radial direction and a non-axisymmetric planar vibration mode in which it bends to and fro in a non-axisymmetric manner within a single plane, and thereby drives a relative movement member, and a base member to which the vibration element is fixed. The vibration element includes at least one superimposed layer structure comprising a pair of electrical energy to mechanical energy conversion elements and an elastic member sandwiched between the pair of electrical energy to mechanical energy conversion elements. The elastic member includes a ring shaped portion to both the sides of which the pair of electrical energy to mechanical energy conversion elements are stuck, and a cylindrical shaped support portion, formed integrally with the ring shaped portion, which fixes the vibration element to the base member. The support portion includes an elastic portion which suppresses the transmission of vibration generated by the vibration element to the base member.
    • 振动致动器包括振动元件,其同时产生径向对称膨胀振动模式,其中径向对称膨胀振动模式在径向方向上膨胀和收缩;非轴对称平面振动模式,其以非轴对称的方式来回弯曲 从而驱动相对运动构件,并且固定有振动元件的基座构件。 振动元件包括至少一个重叠层结构,其包括一对机械能转换元件的电能和夹在该对电能之间的机械能转换元件的弹性元件。 弹性构件包括两侧的环形部分,其一对电能到机械能转换元件被卡住,并且与环形部分整体形成的圆柱形支撑部分,其将振动元件固定到基座 会员。 支撑部分包括弹性部分,其抑制由振动元件产生的振动对基部构件的传递。
    • 5. 发明授权
    • Memory device with reduced power consumption when byte-unit accessed
    • 存储器件,当字节单元访问时具有降低的功耗
    • US06252807B1
    • 2001-06-26
    • US09457529
    • 1999-12-09
    • Tomoaki SuzukiHaruko Sonpachi
    • Tomoaki SuzukiHaruko Sonpachi
    • G11C700
    • G11C11/4087G11C8/18G11C11/4076
    • A memory device is arranged in such a manner that an access-target memory cell is selected from a plurality of memory cells in accordance with the level of the byte-enable signal at the timing when the level of the corresponding row address strobe signal (/RAS signal) changes, and by this arrangement, the problem resided in the conventional memory device that it could not be decided as to whether a memory block in the DRAM core was to be a selected or non-selected byte until the fall of the corresponding column address strobe signal (/CAS signal), and thus the column decoder and the preamplifier that start operating at the fall of the /RAS signal could not be efficiently controlled is solved, and due to this, electric power that might otherwise be consumed at the time of executing a byte-unit access to the wide-bus DRAM can be reduced.
    • 以这样的方式布置存储器件,使得根据字节使能信号的电平从多个存储器单元中选择存取目标存储器单元,该电平在相应行地址选通信号(/ RAS信号)改变,并且通过这种布置,问题驻留在传统的存储器件中,不能决定DRAM内核中的存储器块是否是选择的或非选择的字节,直到相应的 列地址选通信号(/ CAS信号),因此无法有效控制在/ RAS信号的下降时开始工作的列解码器和前置放大器得到解决,由此可能会在 可以减少执行对宽总线DRAM的字节单位访问的时间。