公开(公告)号：US20180144621A1

公开(公告)日：2018-05-24

申请号：US15802655

申请日：2017-11-03

Applicant: NEC Corporation

Inventor： Ichiro ARAI ,  Yuta NAMIKI

IPC: G08G1/01 ,  G06Q50/10 ,  H04W24/10

CPC classification number: G08G1/0116 ,  B60W40/10 ,  G06Q50/10 ,  G07C5/00 ,  G07C5/008 ,  G07C5/085 ,  G08G1/0112 ,  G08G1/0129 ,  G08G1/0133 ,  H04L41/0803 ,  H04W4/38 ,  H04W4/48 ,  H04W4/70 ,  H04W24/10 ,  H04W68/005

Abstract: An edge computer is connected to plural types of sensors each measuring a status of a monitoring target and to a server apparatus. The edge computer has an acquisition unit, a determination unit, and a compression unit. The acquisition unit regularly acquires a data set including a plurality of measurement data measured by the plural types of sensors. The determination unit previously holds dependencies between the measurement data measured by the plural types of sensors when the monitoring target is normal as reference dependencies. The determination unit, every time the data set is acquired, determines whether or not dependencies between the measurement data included by the data set match the reference dependencies. The compression unit compresses the data set to transmit the data set to the server apparatus on a basis of a result of the determination.

公开(公告)号：US20160041885A1

公开(公告)日：2016-02-11

申请号：US14776314

申请日：2013-12-16

Applicant: NEC CORPORATION

Inventor： Ichiro ARAI

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1469 ,  G06F11/1451 ,  G06F11/1471 ,  G06F17/30368 ,  G06F17/30575 ,  G06F2201/80 ,  G06F2201/84

Abstract: Each node constituting this data replicating system returns a response to a data operation requesting device upon having written, into a temporary storage device of the node itself, a post-update log of a data record for which an operation requested by a data operation request was executed. Furthermore, when a checkpoint is reached, each node updates a data record storage unit of the node itself on the basis of the post-update log of the data record stored in the temporary storage device of the node itself, writes the post-update log of the data record stored in the temporary storage device of the node itself into an update history storage unit of the node itself, and writes, into a shared storage device shared with other nodes, checkpoint information having information for specifying a latest post-update log written into the update history storage unit.

Abstract translation: 构成该数据复制系统的每个节点在向节点本身的临时存储装置写入数据操作请求所请求的操作的数据记录的更新后日志为 执行。 此外，当到达检查点时，每个节点基于存储在节点本身的临时存储设备中的数据记录的更新后日志来更新节点本身的数据记录存储单元，写入更新后日志 存储在节点本身的临时存储装置中的数据记录到节点本身的更新历史存储单元中，并将其写入与其他节点共享的共享存储装置中，具有用于指定最新的更新后日志的信息的检查点信息 写入更新历史存储单元。