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    • 3. 发明申请
    • Microwave tunable device having coplanar waveguide structure
    • 具有共面波导结构的微波可调谐器件
    • US20050116792A1
    • 2005-06-02
    • US10817822
    • 2004-04-06
    • Seung MoonHan RyuMin KwakYoung KimSang LeeSu Lee
    • Seung MoonHan RyuMin KwakYoung KimSang LeeSu Lee
    • H01P5/04H01P1/18H01P3/00H01P3/08
    • H01P3/003H01P1/181
    • Provided is a microwave tunable device having a coplanar waveguide structure, comprising a substrate, a ferroelectric/paraelectric thin film, a first transmission line, and second transmission lines, wherein a transmission line portion is formed with a constant width and an input/output portion is formed with a width larger than that of the transmission line portion in the first transmission line, and a transmission line portion is formed with a constant width and an input/output portion is formed with a narrower width than that of the transmission line portion in the second transmission line, whereby it is possible to minimize impedance difference with a connection line, a reflection loss, and an insertion loss, by controlling the width of the first transmission line and gap between the first and the second transmission lines, in the input/output portion.
    • 本发明提供一种具有共面波导结构的微波可调谐装置,包括基板,铁电/顺电薄膜,第一传输线和第二传输线,其中传输线部分形成为恒定宽度,输入/输出部分 形成为具有比第一传输线中的传输线部分的宽度大的宽度,并且传输线部分形成为具有恒定的宽度,并且输入/输出部分形成为具有比传输线部分的宽度更窄的宽度 第二传输线,通过在输入端控制第一传输线的宽度和第一和第二传输线之间的间隙,可以使与连接线的阻抗差,反射损耗和插入损耗最小化 /输出部分。
    • 10. 发明申请
    • Crash recovery system and method for distributed file server using object based storage
    • 使用基于对象的存储的分布式文件服务器的崩溃恢复系统和方法
    • US20060129614A1
    • 2006-06-15
    • US11231158
    • 2005-09-20
    • Hong KimKi JinYoung KimYoung KimMi LeeMyung Kim
    • Hong KimKi JinYoung KimYoung KimMi LeeMyung Kim
    • G06F17/30
    • G06F11/1435G06F11/1448G06F11/1451G06F11/1464G06F11/1469
    • A crash recovery system and method for distributed file server using object based storage are provided. The system includes: a client for accessing a file system using an object-based storage device (OSDFS), transmitting a command to an object-based storage device (OSD) and accessing a metadata server (MDS); a network for providing an interface and transferring data between the client, the metadata server and the object-based storage device; an object-based storage device for analyzing the command from the client and performing corresponding operations of the command; and a metadata server for storing and managing metadata controlling a direct access to a predetermined file from the client to the object based storage device in order to provide the metadata to the client, and checking and recovering a consistency of the stored and managed metadata when the OSDFS is malfunctioned.
    • 提供了一种使用基于对象的存储的分布式文件服务器的崩溃恢复系统和方法。 该系统包括:用于使用基于对象的存储设备(OSDFS)访问文件系统的客户机,向基于对象的存储设备(OSD)发送命令并访问元数据服务器(MDS); 用于提供接口并在客户端,元数据服务器和基于对象的存储设备之间传送数据的网络; 基于对象的存储装置,用于分析来自客户机的命令并执行命令的相应操作; 以及用于存储和管理元数据的元数据服务器,其控制从客户机到基于对象的存储设备直接访问预定文件,以便向客户端提供元数据,以及当存储和管理的元数据的一致性时 OSDFS发生故障。