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    • 8. 发明申请
    • Electron beam generator for multiple columns
    • 多列电子束发生器
    • US20070296343A1
    • 2007-12-27
    • US11703848
    • 2007-02-08
    • Takamasa Sato
    • Takamasa Sato
    • H01J37/06
    • H01J37/3177B82Y10/00B82Y40/00H01J37/06H01J37/304H01J2237/061
    • An electron beam generator for multiple columns includes: a plurality of cathodes, to which a single acceleration voltage supply applies a negative acceleration voltage, and which thus generates thermoelectrons; a grid for each of the plurality of cathodes, the grid converging the thermoelectrons emitted to form a beam of electrons; a grid voltage supply for giving the grid a potential which is negative relative to a potential of the cathode; and a control circuit for each cathode for controlling the potential of the grid. The control circuit includes a current direction restricting element connected between a positive electrode of the grid voltage supply and the cathode, and a grid current supplied from the grid voltage supply is caused to flow to the cathode through the current direction restricting element.
    • 用于多列的电子束发生器包括:多个阴极,单个加速电压电源施加负加速电压,从而产生热电子; 用于多个阴极中的每一个的栅格,所述栅格会聚发射的热电子以形成电子束; 电网电压源,用于给予电网相对于阴极的电位为负的电位; 以及用于控制电网电位的每个阴极的控制电路。 控制电路包括连接在电网电源的正电极和阴极之间的电流方向限制元件,并且通过电流方向限制元件使从电网电源供给的电网电流流向阴极。
    • 10. 发明申请
    • BACKUP SYSTEM
    • 备份系统
    • US20150234860A1
    • 2015-08-20
    • US14423872
    • 2013-12-24
    • Takashi SakaguchiTakamasa SatoKensuke NaritaYosuke Katoh
    • Takashi SakaguchiTakamasa SatoKensuke NaritaYosuke Katoh
    • G06F17/30G06F11/14
    • G06F17/30191G06F11/1451G06F11/2066G06F11/2069G06F11/2074G06F11/2076G06F11/3409G06F11/3419G06F11/3485G06F17/30581G06F2201/81G06F2201/82G06F2201/855
    • A backup copy from a first data volume to a second data volume is executed according to either a synchronous mode, in which write data is copied from the first data volume to the second data volume in synchronous with a write request, or an asynchronous mode, in which journal data of a first storage apparatus is reflected on the second data volume in asynchronous with the write request. A second storage apparatus acquires secondary load information representing its own load status, and transmits the information to the first storage apparatus. The first storage apparatus acquires primary load information representing its own load status, determines switching between the modes based on the secondary load information, the primary load information and mode information, and transmits determination information representing determination results to the second storage apparatus. When the determination information represents the switching from the asynchronous mode to the synchronous mode, the second storage apparatus acquires the journal data from the first storage apparatus and reflects the journal data on the second data volume.
    • 根据同步模式执行从第一数据卷到第二数据卷的备份副本,其中以与写请求同步的写入数据从第一数据卷复制到第二数据卷或异步模式, 其中第一存储装置的日志数据与写请求异步地反映在第二数据卷上。 第二存储装置获取代表其自己的负载状态的二次负载信息,并将该信息发送到第一存储装置。 第一存储装置获取代表其自身负载状态的主负载信息,根据二次负载信息,主负载信息和模式信息确定模式之间的切换,并将表示确定结果的确定信息发送到第二存储装置。 当确定信息表示从异步模式切换到同步模式时,第二存储装置从第一存储装置获取日志数据并将日志数据反映在第二数据卷上。