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    Control Device, Unauthorized Command Detection Method, and Program
    1.
    发明公开
    Control Device, Unauthorized Command Detection Method, and Program 审中-公开

    公开(公告)号：US20240176873A1

    公开(公告)日：2024-05-30

    申请号：US18283413

    申请日：2022-02-21

    Applicant: Hitachi, Ltd.

    Inventor： Yuki TANAKA ,  Kotaro SHIMAMURA ,  Teruaki SAKATA

    IPC: G06F21/54 ,  G06F21/56

    CPC classification number: G06F21/54 ,  G06F21/566

    Abstract: The present invention aims to provide a control device that reduces load and can provide early detection of program tampering. A main storage unit 102 stores a main application 107 and illegal command information 108. The main application 107 is an extension program in which target commands, which are at least some of the commands included in a prescribed program, have been converted into extension commands. The illegal command information 108 indicates the target commands. A command monitoring unit 104: compares executed commands, which are commands that have been executed by the CPU 103, and target commands, which are indicated in the illegal command information 108; and determines whether or not an executed command is an illegal command, based on the comparison results.

    Programmable Logic Device and Logic Integration Tool
    2.
    发明申请
    Programmable Logic Device and Logic Integration Tool 有权
    可编程逻辑器件和逻辑集成工具

    公开(公告)号：US20160241247A1

    公开(公告)日：2016-08-18

    申请号：US15025821

    申请日：2013-09-30

    Applicant: HITACHI, LTD.

    Inventor： Yusuke KANNO ,  Nobuyasu KANEKAWA ,  Kotaro SHIMAMURA ,  Tadanobu TOBA ,  Teppei HIROTSU ,  Tsutomu YAMADA

    IPC: H03K19/177 ,  H03K19/21

    CPC classification number: H03K19/17764 ,  H03K19/17728 ,  H03K19/1776 ,  H03K19/21

    Abstract: An object of the present invention is to provide a high reliable/high safe programmable logic device with high error resistance. The present invention provides a programmable logic device that has a plurality of configuration memories. The configuration memories are divided into a plurality of areas and are arranged and a part of the plurality of areas is set to a high reliable area where reliability for a failure of the configuration memory is higher than reliability in the other area.

    Abstract translation: 本发明的目的是提供一种具有高抗错误性的高可靠/高安全性的可编程逻辑器件。 本发明提供一种具有多个配置存储器的可编程逻辑器件。 配置存储器被分成多个区域并且被布置，并且多个区域的一部分被设置为高可靠性区域，其中配置存储器的故障的可靠性高于其他区域中的可靠性。

    SECURITY DEVICE AND SECURITY METHOD
    3.
    发明公开
    SECURITY DEVICE AND SECURITY METHOD 审中-公开

    公开(公告)号：US20240241804A1

    公开(公告)日：2024-07-18

    申请号：US18561776

    申请日：2022-04-21

    Applicant: Hitachi, Ltd.

    Inventor： Naohiro IKEDA ,  Kotaro SHIMAMURA

    IPC: G06F11/16

    CPC classification number: G06F11/1679 ,  G06F11/1641

    Abstract: The safety device includes a plurality of arithmetic units which output an arithmetic result of input data as arithmetic data in each control period, a first comparison unit which compares information indicating the control period at a timing at which each of the plurality of arithmetic units outputs the arithmetic data, a plurality of temporary storage units which hold the arithmetic data output by the plurality of arithmetic units, a second comparison unit configured to compare the arithmetic data held by the plurality of temporary storage units, and an output unit configured to output the arithmetic data to outside. Each of the plurality of temporary storage units outputs the arithmetic data held therein according to a comparison result from the first comparison unit, and the output unit outputs the arithmetic data output by the temporary storage units to the outside according to a comparison result from the second comparison unit.

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