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    • 1. 发明申请
    • Read ahead method for data retrieval and computer system
    • 读取数据检索方法和计算机系统
    • US20070005904A1
    • 2007-01-04
    • US11325024
    • 2006-01-03
    • Damien LemoalMika Mizutani
    • Damien LemoalMika Mizutani
    • G06F13/00
    • G06F12/0862G06F3/061G06F3/0643G06F3/0659G06F3/0676G06F12/0866G06F2212/6026
    • Execution of the read-ahead function to fragmented data will result only in caching non-contiguous physical blocks, failing to hit and wasting any read-ahead data. Even if file accesses are sequential, but if intervals between accesses are too long, it may occur that any cached data are discharged from the buffer memory due to another readout operation with any cached data ending up in vain. Information concerning fragmented locations is taken out from the input-output circuit and included in the management data of the file system. Predefined management data is added to the readout command of the interface. This management data is used to determine whether or not read-ahead should be activated, the amount of data to be read ahead, and other controls for read-ahead processing. With reference to random access or time-based access to the files, the application is to designate whether or not the read-ahead function should be used so as to enable the storage unit to carry out efficient accesses.
    • 将预读功能执行到分段数据将仅导致缓存非连续的物理块,不能击中并浪费任何预读数据。 即使文件访问是顺序的,但是如果访问之间的间隔太长,则可能会发生任何高速缓存的数据从缓冲存储器中释放出来,这是由于任何缓存数据的另一次读出操作无效。 关于分段位置的信息从输入输出电路中取出并包含在文件系统的管理数据中。 预定义的管理数据被添加到接口的读出命令中。 该管理数据用于确定是否应激活预读,预读数据量以及其它用于预读处理的控件。 参考对文件的随机访问或基于时间的访问,应用程序是指定是否应该使用预读功能,以使得存储单元能够执行有效的访问。
    • 4. 发明申请
    • Data deletion method, storage device, and computer system
    • 数据删除方法,存储设备和计算机系统
    • US20070005659A1
    • 2007-01-04
    • US11325016
    • 2006-01-03
    • Damien LemoalMika Mizutani
    • Damien LemoalMika Mizutani
    • G06F17/30
    • G06F16/162
    • Complete data deletion from a storage device imposes high loads respectively on a host computer for transfer of insignificant data and on a storage device for execution of data transfer, a write operation, and a retry process. As such, a complete deletion command is provided to control deletion of a specified area of a storage space of the storage device without requiring data transfer from the host computer to the storage device. The complete deletion command on the storage device is executed in a simple manner that a write operation is performed to write “arbitrary data” over data of an area specified in, for example, a delete command, by a controller of the storage device, whereby the complete deletion of the specified data is executed. Consequently, a file system is enhanced to enable an application to execute the complete deletion command (“complete file data detection function”).
    • 存储设备的完整数据删除在主计算机上分别施加高负载以传送无关紧要的数据,并在存储设备上执行数据传输,写入操作和重试过程。 因此,提供完整的删除命令来控制存储设备的存储空间的指定区域的删除,而不需要从主机到存储设备的数据传输。 存储装置上的完全删除命令以简单的方式执行,即通过存储装置的控制器执行写入操作以对例如删除命令中指定的区域的数据写入“任意数据”,由此 执行指定数据的完全删除。 因此,增强文件系统以使应用程序能够执行完整的删除命令(“完整的文件数据检测功能”)。
    • 9. 发明申请
    • Proxy Device, Network System, and Communication Method
    • 代理设备,网络系统和通信方法
    • US20080235358A1
    • 2008-09-25
    • US12051257
    • 2008-03-19
    • Hirotaka MORIBEMika MizutaniShigeki Taira
    • Hirotaka MORIBEMika MizutaniShigeki Taira
    • G06F15/177
    • H04L29/12405H04L12/2832H04L61/2528
    • The present invention provides a proxy device, a network system, and a communication method to enable communication between an information appliance capable of communicating only within a closed network and an information appliance capable of communicating only within a closed network different from the network, via an open network, wherein in a proxy device 4 capable of transmitting and receiving a message to and from a DLNA-compliant device 6 present in a home network 2, a message which can be communicated within the home network 2 but cannot be communicated to the Internet 3 is encapsulated so as to be communicated to the Internet 3, the encapsulated message is transmitted and received via the Internet 3, and the encapsulated message is decapsulated, and the decapsulated message is transmitted into the home network 2 in which the proxy device 4 itself is present.
    • 本发明提供了一种代理设备,网络系统和通信方法,用于能够仅在封闭网络内进行通信的信息设备与只能在不同于网络的封闭网络内通信的信息设备之间进行通信, 开放网络,其中在能够向家庭网络2中存在的DLNA兼容设备6发送消息和从其接收消息的代理设备4中,可以在家庭网络2内传送但不能传送到因特网的消息 3被封装以被传送到因特网3,经由因特网3发送和接收封装的消息,并且封装的消息被解封装,并且解封装的消息被发送到家庭网络2中,其中代理设备4本身 存在。