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    • 28. 发明授权
    • Inverter power supply
    • 逆变电源
    • US5449979A
    • 1995-09-12
    • US125436
    • 1993-09-22
    • Atsushi UeokaAkinori HiramatsuHiroyuki SakoKazuhiro Gotoh
    • Atsushi UeokaAkinori HiramatsuHiroyuki SakoKazuhiro Gotoh
    • H05B41/285H05B37/02
    • H05B41/2855Y10S315/07
    • A power supply with an inverter capable of avoiding the inverter from producing excessive high voltage when a load is detached or the load impedance is greatly increased. The inverter is energized by a fixed DC voltage source and includes at least one switching element and an L-C resonant circuit. The switching element is driven to turn on and off and cooperative with the L-C resonant circuit to produce a high frequency AC voltage at an inverter output for driving a load. The inverter includes first and second clamping diodes connected in series across the DC voltage source in anti-parallel relation thereto with the first and second diodes defining therebetween a first connection point. Also included in the inverter is a pair of first and second impedance elements which are connected in series across the inverter output to provide a divided voltage indicative of an output voltage of the inverter with the first and second impedance elements defining therebetween a second connection point. The first and second connection points are connected to each other so as to keep the points at a voltage level nearly equal to a fixed voltage of the DC voltage source, in such a manner as to limit the output voltage of the inverter below a predetermined level by allowing a clamping current to flow through the first and second diodes and impedance elements and through the DC voltage source to escape the excessive voltage developed in response to the increase in the impedance of the load.
    • 具有逆变器的电源,能够避免在负载分离或负载阻抗大大增加时逆变器产生过高的高电压。 逆变器由固定的直流电压源供电,并且包括至少一个开关元件和L-C谐振电路。 开关元件被驱动以导通和关断,并与L-C谐振电路协调以在用于驱动负载的逆变器输出处产生高频AC电压。 逆变器包括与反向平行关系的DC电压源串联连接的第一和第二钳位二极管,第一和第二二极管在其间限定第一连接点。 还包括在逆变器中的是一对第一和第二阻抗元件,其串联连接在逆变器输出端上,以提供表示逆变器的输出电压的分压,第一和第二阻抗元件在其间限定第二连接点。 第一连接点和第二连接点彼此连接,以便将点保持在与DC电压源的固定电压几乎相等的电压水平,以将逆变器的输出电压限制在预定水平以下 通过允许钳位电流流过第一和第二二极管和阻抗元件以及通过DC电压源,以避免响应于负载的阻抗的增加而产生的过大的电压。
    • 29. 发明授权
    • Method, apparatus, program and system for migrating NAS system
    • 用于迁移NAS系统的方法,设备,程序和系统
    • US08019726B2
    • 2011-09-13
    • US12188487
    • 2008-08-08
    • Atsushi Ueoka
    • Atsushi Ueoka
    • G06F17/00
    • G06F17/30079
    • In a state where the migration source NAS apparatus is continuously operated, a migration processing program confirms the update date and time of files stored in the migration source NAS apparatus, and migrates only the files that were not updated from a specific time to the start date and time of migration processing. Or, the migration processing program migrates the files stored in the migration source NAS apparatus sequentially from the oldest file. The migration performance is calculated based on the capacity and migration time of the migrated files, and the time required for migrating the non-migrated files is calculated based on the size and migration performance of the non-migrated files.
    • 在迁移源NAS装置连续运行的状态下,迁移处理程序确认存储在迁移源NAS装置中的文件的更新日期和时间,并且仅将没有从特定时间更新的文件迁移到开始日期 和迁移处理的时间。 或者,迁移处理程序从最旧的文件顺序地迁移存储在迁移源NAS装置中的文件。 基于迁移文件的容量和迁移时间计算迁移性能,并根据未迁移文件的大小和迁移性能计算迁移未迁移文件所需的时间。
    • 30. 发明授权
    • Data recovery method in differential remote backup for a NAS system
    • NAS系统差分远程备份的数据恢复方法
    • US07769721B2
    • 2010-08-03
    • US12017685
    • 2008-01-22
    • Atsushi UeokaYasuo Yamasaki
    • Atsushi UeokaYasuo Yamasaki
    • G06F17/30G06F7/00
    • G06F11/2094G06F11/1662G06F11/2097G06F2201/82G06F2201/84H04L67/1097H04L69/40
    • To ensure the consistency of data included in blocks which have already been received and has already been remote-copied, on a file basis, in a destination NAS system, when remote copy has failed due to a failure which has occurred in a source NAS system, there is provided a method in which: a source NAS system transmits a correspondence between an updated block and a file, to a destination NAS system when remote copy is started; the destination NAS system records a remote copy state for each block; a management server refers to the information recorded by the destination NAS system and selects files from which all the update blocks have been received, when remote copy has failed due to a failure which has occurred in the source NAS system; and the destination NAS system stores data included in the update blocks of the files selected by the management server.
    • 为了确保在目的NAS系统中文件基础上已经接收并已经被远程复制的块中包含的数据的一致性,当远程复制由于源NAS系统中发生故障而失败时 提供了一种方法,其中,当远程复制开始时,源NAS系统将更新的块和文件之间的对应关系发送到目的地NAS系统; 目的NAS系统为每个块记录远程复制状态; 当由于源NAS系统中发生故障而导致远程复制失败时,管理服务器是指由目的NAS系统记录的信息,并选择已接收到所有更新块的文件; 并且目的地NAS系统存储由管理服务器选择的文件的更新块中包含的数据。