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    • 4. 发明授权
    • Boundary acoustic wave device and communication equipment
    • 边界声波装置及通讯设备
    • US08264299B2
    • 2012-09-11
    • US12711965
    • 2010-02-24
    • Satoru MatsudaMichio MiuraTakashi Matsuda
    • Satoru MatsudaMichio MiuraTakashi Matsuda
    • H03H9/25H03H9/145
    • H03H9/02834H03H9/0222H03H9/02653
    • A boundary acoustic waves device includes a piezoelectric substrate having piezoelectricity, interdigitated electrodes formed on the piezoelectric substrate, a first medium formed on the piezoelectric substrate so as to cover the interdigitated electrode, and a second medium formed on the first medium. The interdigitated electrodes include a plurality of electrode fingers and bus bars that connect ends of the plurality of electrode fingers. A third medium is formed on the first medium. The second medium and the third medium are in contact with the first medium. The first medium, the second medium, and the third medium are formed of different materials. The first medium, the second medium, and the third medium are different in a ratio in length of a part with the third medium formed with respect to a length of a propagation path of boundary acoustic waves in a cross-section perpendicular to a longitudinal direction of the electrode fingers, in the longitudinal direction of the electrode fingers.
    • 声界面波装置包括具有压电性的压电基板,形成在压电基板上的叉指电极,形成在压电基板上以覆盖交叉指向电极的第一介质,以及形成在第一介质上的第二介质。 交叉电极包括连接多个电极指的端部的多个电极指和汇流条。 在第一介质上形成第三介质。 第二介质和第三介质与第一介质接触。 第一介质,第二介质和第三介质由不同的材料形成。 第一介质,第二介质和第三介质在与纵向方向垂直的截面中相对于边界声波的传播路径的长度形成的部分的长度的比例不同 的电极指的长度方向。
    • 5. 发明授权
    • Elastic boundary wave device
    • 弹性边界波装置
    • US07915786B2
    • 2011-03-29
    • US12705565
    • 2010-02-12
    • Takashi MatsudaSatoru MatsudaMichio Miura
    • Takashi MatsudaSatoru MatsudaMichio Miura
    • H01L41/08
    • H03H9/0222H03H9/02574H03H9/6433
    • An elastic boundary wave device of the present invention includes a plurality of elastic boundary wave elements. The elastic boundary wave elements each include a piezoelectric material layer, an electrode disposed over the piezoelectric material layer, a first dielectric layer formed over the piezoelectric material layer so as to cover the electrode, and a second dielectric layer formed over the first dielectric layer. An acoustic velocity of the second dielectric layers is faster than an acoustic velocity of the first dielectric layers, and the acoustic velocity of the second dielectric layer of at least one elastic boundary wave element from among the plurality of elastic boundary wave elements is different from the acoustic velocity of the second dielectric layer of another of the elastic boundary wave elements. This enables improving the degree of suppression in use as a filter in the elastic boundary wave device.
    • 本发明的弹性边界波装置包括多个弹性边界波元件。 弹性边界波元件各自包括压电材料层,设置在压电材料层上的电极,形成在压电材料层上以覆盖电极的第一电介质层,以及形成在第一介电层上的第二电介质层。 第二电介质层的声速比第一电介质层的声速更快,并且多个弹性边界波元件中的至少一个弹性边界波元件的第二电介质层的声速不同于 另一弹性边界波元件的第二电介质层的声速。 由此,能够提高弹性边界波装置中的滤波器的使用抑制度。
    • 10. 发明授权
    • Virtual space system, virtual space control device, virtual space control method, and recording medium
    • 虚拟空间系统,虚拟空间控制装置,虚拟空间控制方法和记录介质
    • US07076525B1
    • 2006-07-11
    • US09714743
    • 2000-11-16
    • Satoru MatsudaKatsushige Hata
    • Satoru MatsudaKatsushige Hata
    • G06F15/16
    • H04L67/18A63F2300/572A63F2300/8082H04L12/1831H04L69/329
    • In a virtual space system, it is made possible to freely set a region where a chat is recorded, without reducing a chat feasible region and complicating the system. A server is provided with user objects for holding latest position information of a transmitter in a virtual space and transmission region definition information for defining a transmission region, and chat reception objects for holding latest position information of application objects and reception region definition information for defining a reception region, and only contents of a chat issued from the transmitter in the reception region or only contents of a chat issued from the transmitter when the reception object enters the transmission region are stored in a chat storage file.
    • 在虚拟空间系统中,可以自由地设置记录聊天的区域,而不会减少聊天可行区域并使系统复杂化。 向服务器提供用于在虚拟空间中保持发送机的最新位置信息的用户对象和用于定义发送区域的发送区域定义信息,以及用于保存应用对象的最新位置信息的聊天接收对象和用于定义发送区域的接收区域定义信息 接收区域中仅存在从接收区域中的发送器发出的聊天的内容,或仅当接收对象进入发送区域时从发送器发出的聊天的内容被存储在聊天存储文件中。