公开(公告)号：US20170070573A1

公开(公告)日：2017-03-09

申请号：US15190697

申请日：2016-06-23

Applicant: HITACHI, LTD.

Inventor： Masayuki TAKASE ,  Taisuke UETA ,  Yuji OISHI ,  Yasunari SHINOHARA

IPC: H04L29/08 ,  G06F17/30

CPC classification number: H04L67/1097 ,  H04L67/06

Abstract: A data processing device includes: an FPGA that includes a plurality of core circuits to which a data processing function is settable through a program file, and processes input data through the core circuits; an FPGA circuit file storage unit that stores the program file; and a control unit that sets the data processing function to the core circuits. In the data processing device, a request including information specifying the data processing function to be set and the core circuit is transmitted to a file management server, the data processing function is set based on a program file received in response to the request, and the received program file is stored in the FPGA circuit file storage unit.

Abstract translation: 数据处理装置包括：FPGA，其包括通过程序文件可设置数据处理功能的多个核心电路，并且通过核心电路处理输入数据; 存储程序文件的FPGA电路文件存储单元; 以及将数据处理功能设置为核心电路的控制单元。 在数据处理装置中，包括指定要设置的数据处理功能的信息和核心电路被发送到文件管理服务器的请求，基于响应于该请求而接收的程序文件来设置数据处理功能， 接收的程序文件存储在FPGA电路文件存储单元中。

公开(公告)号：US20150318958A1

公开(公告)日：2015-11-05

申请号：US14650438

申请日：2013-11-20

Applicant: Hitachi, Ltd.

Inventor： Yuji OISHI ,  Takashi ISOBE ,  Takeki YAZAKI

IPC: H04L1/08 ,  H04L29/06 ,  H04L12/823

CPC classification number: H04L1/08 ,  H04L1/1877 ,  H04L1/1887 ,  H04L47/323 ,  H04L69/163

Abstract: To efficiently retransmit discarded packets and to reduce discarded location storage capacity, it is provided a communication apparatus to be coupled to a network, the communication apparatus being configured to: transmit data to a correspondent communication apparatus coupled to the network; receive an acknowledgement transmitted from the correspondent communication apparatus; monitor whether or not a storage capacity shortage for storing discarded locations of transmitted data in the correspondent communication apparatus; and retransmit data by setting a retransmission priority for discarded locations in a case of the storage capacity shortage.

Abstract translation: 为了有效地重传丢弃的分组并减少丢弃的位置存储容量，提供了要耦合到网络的通信装置，所述通信装置被配置为：向耦合到网络的对应通信装置发送数据; 接收从相应通信设备发送的确认; 监视在所述对应通信装置中存储发送数据的丢弃位置的存储容量不足; 并且在存储容量不足的情况下，通过设置丢弃位置的重发优先级来重传数据。

公开(公告)号：US20230422025A1

公开(公告)日：2023-12-28

申请号：US18122205

申请日：2023-03-16

Applicant: Hitachi, Ltd.

Inventor： Akihiro OHNUMA ,  Daisuke MASHIMO ,  Masayuki TAKASE ,  Yuji OISHI ,  Mikio KUWAHARA

IPC: H04W8/26

CPC classification number: H04W8/26 ,  G16Y20/20

Abstract: It is provided a network system that transfers data, the network system comprising: a first network; a second network connected with the first network and to which a server is connected; a third network connected with the first network and in which a terminal is accommodated; a terminal identification device, wherein the terminal identification device is configured to hold terminal identification information in which the address information of the gateway device in the first network, an identifier of the terminal, and the connection availability of the terminal to the second network are associated with each other, determine the connection availability of the terminal to the second network based on the terminal identification information, and acquire the address information of the gateway device in the first network and the identifier of the terminal from the gateway device to register or update the terminal identification information.

公开(公告)号：US20150319064A1

公开(公告)日：2015-11-05

申请号：US14650201

申请日：2013-10-25

Applicant: HITACHI, LTD.

Inventor： Yuji OISHI ,  Takashi ISOBE ,  Takeki YAZAKI

IPC: H04L12/26 ,  H04L5/00 ,  H04W24/08

CPC classification number: H04L43/0829 ,  H04L1/1877 ,  H04L1/203 ,  H04L5/0055 ,  H04W24/08

Abstract: An object of the present invention is to measure a packet loss rate by using information included in a general communication protocol. In a network including a transmission terminal, a communication line, and a reception terminal, the transmission terminal adds a number denoting a packet order to a transmission packet and transmits the transmission packet, and the reception terminal is a system using a protocol in which an order of packets, which have been received, is returned as an acknowledgement, and a system using a selective acknowledgement to notify of reception of discontinuous data when the reception terminal receives the discontinuous data. A method for measuring a packet loss rate by using a number of transmission packets and information on an acknowledgement and a selective acknowledgement is provided in the transmission terminal.

Abstract translation: 本发明的目的是通过使用包括在通用通信协议中的信息来测量分组丢失率。 在包括发送终端，通信线路和接收终端的网络中，发送终端向发送分组添加表示分组顺序的数字，并发送发送分组，接收终端是使用协议的系统，其中， 已经接收到的分组的顺序作为确认返回，以及当接收终端接收到不连续数据时使用选择性确认来通知接收不连续数据的系统。 在传输终端中提供了一种通过使用多个传输分组来测量分组丢失率的方法以及关于确认和选择性确认的信息。