公开(公告)号：US20230319531A1

公开(公告)日：2023-10-05

申请号：US17945640

申请日：2022-09-15

Applicant: Hitachi, Ltd.

Inventor： Tomoyuki IIJIMA ,  Masayuki TAKASE ,  Shiro MAZAWA

IPC: H04W4/50 ,  H04W28/16 ,  H04L61/4511

CPC classification number: H04W4/50 ,  H04W28/16 ,  H04L61/4511

Abstract: A network system comprises a communication facility, and a management apparatus. The communication facility includes a wireless base station, a data processing apparatus, and communication processing apparatuses. The management apparatus manages resource management information for managing, as a resource, a value of an item to be set for the communication facility to generate a network slice for each of characteristics of the network slice. The management apparatus generates the network slice, refers, based on a characteristic of the network slice, to the resource management information to determine the value of the item and transmits, to the communication facility, first setting information for setting the determined value of the item. The management apparatus generates a transfer rule by associating identification information on a wireless terminal and identification information on the data processing apparatus with each other and transmits, to the communication facility, second setting information for setting the transfer rule.

公开(公告)号：US20170241958A1

公开(公告)日：2017-08-24

申请号：US15518896

申请日：2015-03-23

Applicant: Hitachi, Ltd.

Inventor： Hisanori MATSUMOTO ,  Shiro MAZAWA ,  Michio IGUCHI

IPC: G01N29/30

CPC classification number: G01N29/30 ,  G01H1/00 ,  G01H3/005

Abstract: There is disclosed a method of detecting failures or anomalies of a large number of sensor terminals without using manpower or expensive equipment in the seismic exploration business. The method includes preparing a plurality of sensor terminals having sensors that detect vibrations from outside, the plurality of sensor terminals receiving the vibrations and outputting vibration reception signals, and comparing a first vibration reception signal output by a first sensor terminal with a second vibration reception signal output by a second sensor terminal, thereby detecting if one of the first sensor and the second sensor is failed or anomalous.

公开(公告)号：US20200278463A1

公开(公告)日：2020-09-03

申请号：US16646197

申请日：2017-10-25

Applicant: HITACHI, LTD.

Inventor： Akira MAEKI ,  Shiro MAZAWA ,  Tatsuyuki SAITO ,  Takao SAKURAI ,  Tomonori SEKIGUCHI

IPC: G01V1/16 ,  G01V1/18

Abstract: An internal structure detection system includes: two kinds of sensors with different operating principles for receiving reflected waves of vibration applied to an inspection target in an investigation area; and a processing apparatus that detects an internal structure of the inspection target by using the sensor data received by the two kinds of sensors. The two kinds of sensors are deployed in the investigation area with different densities, in a distributed manner.

公开(公告)号：US20130143616A1

公开(公告)日：2013-06-06

申请号：US13676909

申请日：2012-11-14

Applicant: HITACHI, LTD.

Inventor： Changho HAN ,  Shiro MAZAWA ,  Michio IGUCHI

IPC: H04W52/18

CPC classification number: H04W52/18 ,  H04W52/244 ,  H04W52/267 ,  H04W52/325 ,  H04W52/367

Abstract: When a mobile station registered at a closed-type femtocell base station is in a connection state in a cell area covered by the femtocell base station, the transfer power of the femtocell base station for a cell identification signal is adjusted according to one scale estimating the receiving quality of the cell identification signal at the mobile station. When no mobile station is located in the cell area covered by the femtocell base station, the cell identification signal is sent with the minimum transmission power necessary for a mobile station to make a call in the cell area to reduce the power consumption of the femtocell base station and also to reduce interference with other macrocell base stations and other femtocell base stations.

Abstract translation: 当在密闭式毫微微小区基站登记的移动站处于由毫微微小区基站覆盖的小区区域的连接状态时，根据一个比例估计用于小区识别信号的毫微微小区基站的传送功率， 在移动站接收小区识别信号的质量。 当没有移动站位于毫微微小区基站覆盖的小区区域中时，小区识别信号以移动台在小区区域中进行呼叫所需的最小发射功率发送，以减少毫微微小区基站的功耗 并且还减少与其他宏小区基站和其他毫微微小区基站的干扰。

公开(公告)号：US20180246236A1

公开(公告)日：2018-08-30

申请号：US15757982

申请日：2017-04-07

Applicant: Hitachi, Ltd.

Inventor： Masaki MURATA ,  Shiro MAZAWA ,  Xiaoyun LU ,  Masayuki MIYAZAKI ,  Hisato KESSOKU

IPC: G01V1/16 ,  G01V13/00 ,  G06Q30/06 ,  G06Q10/00 ,  G06Q30/02

CPC classification number: G01V1/164 ,  G01P15/131 ,  G01V1/003 ,  G01V1/22 ,  G01V13/00 ,  G06Q10/20 ,  G06Q30/0283 ,  G06Q30/0645 ,  G06Q50/02

Abstract: Provided is a sensor apparatus including: a normal operation unit including a first sensor and a storage device; an external environment detection unit including a second sensor; a power supply switch unit configured to control supply of electric power to the normal operation unit; and a power supply configured to supply the electric power to the normal operation unit via the power supply switch unit. In the sensor apparatus, in an operational mode, the normal operation unit records data measured by the first sensor into the storage device, and, in a non-operational mode, when a measured value obtained by the second sensor satisfies a predetermined condition, the external environment detection unit controls the power supply switch unit so that the power supply switch unit supplies the electric power to the normal operation unit, and the normal operation unit records the data measured by the first sensor into the storage device.

公开(公告)号：US20180063805A1

公开(公告)日：2018-03-01

申请号：US15627791

申请日：2017-06-20

Applicant: HITACHI, LTD.

Inventor： Hisanori MATSUMOTO ,  Shiro MAZAWA ,  Yasutaka SERIZAWA

IPC: H04W56/00 ,  G08C17/02 ,  G01V1/24 ,  G01S19/01

CPC classification number: H04W56/006 ,  G01S19/01 ,  G01S19/14 ,  G01S19/39 ,  G01V1/22 ,  G01V1/247 ,  G01V1/26 ,  G01V2200/12 ,  G08C17/02

Abstract: A time synchronization system includes: a position information acquisition unit configured to acquire installation position information related to an installation position of a time synchronization target whose time is synchronized; a time synchronization signal acquisition unit configured to receive a positioning signal transmitted from a positioning satellite as a time synchronization signal and acquire, from the time synchronization signal, transmission position information related a position of the positioning satellite and transmission time information at timing when the time synchronization signal is transmitted; and a signal processing unit configured to calculate synchronized time information for the time synchronization target based on the installation position information of the time synchronization target and the transmission position information and transmission time information from the time synchronization signal, and transmit the synchronized time information to the time synchronization target.

公开(公告)号：US20140185439A1

公开(公告)日：2014-07-03

申请号：US14109348

申请日：2013-12-17

Applicant: HITACHI, LTD.

Inventor： Yoshiki SAKURAI ,  Shiro MAZAWA ,  Hiroaki KASAHARA ,  Masao HAYAMA

IPC: H04W28/02

CPC classification number: H04W28/0289 ,  H04W28/06 ,  H04W48/18 ,  H04W72/1289 ,  H04W88/06 ,  H04W88/10

Abstract: In the case where a plurality of wireless systems differing in service area from each other are present, there is provided a wireless terminal having a function for collecting a history of application information, and a history of position information, a function for transmitting these histories to a priority table control server, a function whereby the priority table control server prepares a priority table on the basis of information obtained, and a function whereby the information is transmitted to the wireless terminal. The wireless terminal selects a connection destination on the basis of the information.

Abstract translation: 在存在服务区域彼此不同的多个无线系统的情况下，提供了一种无线终端，其具有用于收集应用信息的历史的功能，以及位置信息的历史，用于将这些历史发送到 优先级表控制服务器，优先级表控制服务器根据获得的信息准备优先级表的功能，以及信息被发送到无线终端的功能。 无线终端基于该信息选择连接目的地。