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公开(公告)号：US20190023293A1
公开(公告)日：2019-01-24
申请号：US16139724
申请日：2018-09-24
Inventor： Nobuhiko ARASHIN , Takuji MAEDA
IPC: B61L15/00 , B61L23/34 , H04B7/06 , H04B17/318
Abstract: A first antenna group includes one first antenna disposed at one end of a leading car, and another first antenna disposed at one end of a following car. A second antenna group includes one second antenna disposed at the one end of the leading car, the position where the one second antenna is disposed being different from the position where the one first antenna is disposed in a direction orthogonal to a travel direction of the leading car, and another second antenna disposed at the one end of the following car. A measurement unit measures radio wave strength between a pair of first antennas during communication via the first antenna group. A controller is enabled to make a switch from the first antenna group to the second antenna group when the radio wave strength is less than a predetermined value.
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公开(公告)号：US20190354306A1
公开(公告)日：2019-11-21
申请号：US16530658
申请日：2019-08-02
Inventor： Takuji MAEDA
Abstract: An available-capacity management method is a method for managing an available capacity of an information recording device including a nonvolatile memory configured to store file data, the method being performed by an access device configured to access the information recording device. This method includes: at time of mounting of the information recording device on the access device, retrieving, from the information recording device, available-capacity management information according to which available capacities of recording areas are managed; reconstructing the available-capacity management information based on a state of recording of data on the nonvolatile memory; updating the available-capacity management information in response to writing of data into the nonvolatile memory; and, at time of unmounting of the information recording device, recording the available-capacity management information on the information recording device.
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公开(公告)号：US20180107675A1
公开(公告)日：2018-04-19
申请号：US15844835
申请日：2017-12-18
Inventor： Nobuhiko ARASHIN , Takuji MAEDA , Akira YAMASAKI
Abstract: A communication system includes a recording medium and a recording device that writes file data into the recording medium. The recording medium includes a storage that stores configuration information as management information about a file system of the recording medium, and a configuration information updating unit that updates the configuration information. The recording device includes an updating instruction unit that transmits an updating instruction for updating the configuration information based on the file data, to the recording medium, an acquisition unit that acquires the configuration information after transmission of the updating instruction, and a writing unit that writes the file data into the storage based on the configuration information acquired by the acquisition unit.
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公开(公告)号：US20220201424A1
公开(公告)日：2022-06-23
申请号：US17603635
申请日：2020-04-15
Inventor： Kunihiko SAKAIBARA , Takuji MAEDA , Nobuhiko ARASHIN , Kunio FURUTA , Jumpei SASAKI
Abstract: A wireless control device is provided with: a first wireless control unit that acquires first information including information indicating first positions of persons by using a first wireless method; a second wireless control unit that connects to wireless devices by using a second wireless method, and acquires second information that includes device identification information for identifying the wireless devices and information indicating second positions of the wireless devices; and an information control unit that selects the first position within a prescribed range from each second position, and specifies person identification information linked with the device identification information of the second position as the person identification information of a person present at the selected first position.
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5.发明申请ENCRYPTION AND RECORDING APPARATUS, ENCRYPTION AND RECORDING SYSTEM, AND ENCRYPTION AND RECORDING METHOD 有权加密和记录设备，加密和记录系统以及加密和记录方法公开(公告)号：US20160004646A1
公开(公告)日：2016-01-07
申请号：US14769615
申请日：2014-02-06
Inventor： Takuji MAEDA , Shinji INOUE , Yoshikazu KATOH
CPC classification number: G06F12/1408 , G06F12/0238 , G06F21/62 , G06F2212/1052 , G06F2212/202 , H04L9/088 , H04L9/0897 , H04L9/14 , H04L2209/605
Abstract: An encryption and recording apparatus storing data, the apparatus including: a first nonvolatile memory; a second nonvolatile memory; and an encryption and decryption control unit, wherein the encryption and decryption control unit: manages an area included in the second nonvolatile memory on a per-block basis, and manages association between a block and a block-unique key using key management information stored in the first nonvolatile memory; receives the data and corresponding information associated with the data; encrypts the data, using one or more block-unique keys associated with one or more blocks included in the second nonvolatile memory and writes the data to the one or more blocks; and stores the corresponding information into the key management information, associating the corresponding information and the one or more block-unique keys.
Abstract translation: 一种存储数据的加密和记录装置，该装置包括：第一非易失性存储器; 第二非易失性存储器; 以及加密和解密控制单元，其中所述加密和解密控制单元在每个块的基础上管理包括在所述第二非易失性存储器中的区域，并且使用存储在所述第一非易失性存储器中的密钥管理信息来管理块和块唯一密钥之间的关联 第一个非易失性存储器; 接收与数据相关联的数据和对应信息; 使用与包括在第二非易失性存储器中的一个或多个块相关联的一个或多个块唯一密钥来加密数据，并将数据写入到一个或多个块; 并将对应的信息存储到密钥管理信息中，将相应的信息与一个或多个块唯一密钥相关联。
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Patent Agency Ranking
公开(公告)号：US20150220457A1
公开(公告)日：2015-08-06
申请号：US14685038
申请日：2015-04-13
Inventor： Yoshikazu KATOH , Takuji MAEDA , Shinji INOUE , Masato SUTO
IPC: G06F12/14
CPC classification number: G06F12/1408 , G06F21/31 , G06F21/73 , G06F21/79 , G06F2212/1052 , G06F2221/2107 , G09C1/00 , G11C7/1006 , G11C13/0007 , G11C13/0069 , G11C2013/0083 , H04L2209/12
Abstract: A cryptographic processing device comprises a cipher control circuit operative to execute at least one of encryption of plaintext data and decryption of ciphertext data on the basis of conversion parameter data; and a memory cell array that includes a plurality of memory cells, the plurality of memory cells including: a memory cell in a variable state, in which a resistance value reversibly changes between a plurality of changeable resistance value ranges in accordance with an electric signal applied thereto; and a memory cell in an initial state, which does not change to the variable state unless a forming stress for changing the memory cell in the initial state to the variable state is applied thereto, a resistance value of the memory cell in the initial state being within an initial resistance value range which does not overlap with the plurality of changeable resistance value ranges, wherein in the memory cell array, data including the conversion parameter data is stored on the basis of whether each of the plurality of memory cells is in the initial state or the variable state.
Abstract translation: 密码处理装置包括：密码控制电路，用于根据转换参数数据执行明文数据的加密和密文数据的解密中的至少一个; 以及包括多个存储单元的存储单元阵列，所述多个存储单元包括：可变状态的存储单元，其中电阻值根据施加的电信号在多个可变电阻值范围之间可逆地变化 到; 以及处于初始状态的存储单元，其不改变为可变状态，除非将初始状态下的存储单元改变为可变状态的形成应力，则初始状态下的存储单元的电阻值为 在与多个可变电阻值范围不重叠的初始电阻值范围内，其中在存储单元阵列中，基于多个存储单元中的每一个是否处于初始状态来存储包括转换参数数据的数据 状态或可变状态。
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公开(公告)号：US20220308893A1
公开(公告)日：2022-09-29
申请号：US17841054
申请日：2022-06-15
Inventor： Tadashi ONO , Isao KATO , Takuji MAEDA
IPC: G06F9/4401 , G06F1/06 , G06F1/3215
Abstract: A slave device continuously transmits a plurality of tuning blocks to a host device at intervals defined by a clock period between a plurality of data blocks at the time of transmitting the plurality of data blocks and by a clock period defined by a data structure of the plurality of tuning blocks.
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公开(公告)号：US20210240396A1
公开(公告)日：2021-08-05
申请号：US17235819
申请日：2021-04-20
Inventor： Shinji INOUE , Takuji MAEDA
IPC: G06F3/06 , G06F12/1009 , G06F12/0806 , G06F21/44
Abstract: A storage device is connected to a host device. The storage device includes a non-volatile memory, a logical area manager that divides the non-volatile memory into a plurality of logical areas, an area information storage that stores information regarding the plurality of logical areas, an access pattern manager that manages access patterns that are designated by the host device and each correspond to a corresponding one of the plurality of logical areas, an access pattern storage that stores information regarding the access patterns, an access pattern processing manager that selects, when any one of the plurality of logical areas is accessed from the host device, an access pattern corresponding to the any one of the plurality of logical areas accessed from the information, and an access processing management and execution unit that performs processing on the non-volatile memory based on the access pattern and transfers data to the host device.
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公开(公告)号：US20150281361A1
公开(公告)日：2015-10-01
申请号：US14739029
申请日：2015-06-15
Inventor： Takuji MAEDA , Masayuki TOYAMA
CPC classification number: H04L67/1097 , G06F17/30067 , H04B7/24 , H04L67/06 , H04L67/12
Abstract: A file copy controller in a wireless access device reads file system management information of both of a local memory and a remote memory, generates a FS transfer list in which logical address positions of copy sources and logical address positions of copy destinations are stored, and inputs the FS transfer list to a non-volatile memory controller connected to the local memory. The non-volatile memory controller performs copy operation between the local memory and the remote memory based on the information stored in the FS transfer list without using a CPU in an access device or an internal bus connected to the CPU.
Abstract translation: 无线接入设备中的文件复制控制器读取本地存储器和远程存储器的文件系统管理信息，生成存储复制目的地的复制源和逻辑地址位置的逻辑地址位置的FS传送列表，以及输入 FS传输列表连接到本地存储器的非易失性存储器控制器。 非易失性存储器控制器基于存储在FS传送列表中的信息在本地存储器和远程存储器之间执行复制操作，而不使用访问设备中的CPU或连接到CPU的内部总线。
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公开(公告)号：US20220413709A1
公开(公告)日：2022-12-29
申请号：US17897714
申请日：2022-08-29
Inventor： Isao KATO , Takuji MAEDA , Tadashi ONO
IPC: G06F3/06
Abstract: A storage system includes a nonvolatile memory, a controller that controls writing and reading of data to and from the nonvolatile memory, a first interface, and a second interface, and is connected to a host device via the first interface and the second interface. While the host device is being started, a boot loader read from the nonvolatile memory is transferred to the host device via the second interface, and the first interface is initialized in parallel. After the host device is started, write data and read data to or from the nonvolatile memory via any one or both of the first interface and the second interface.
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