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    PRINTED WIRING BOARD AND INFORMATION PROCESSING APPARATUS
    2.
    发明公开
    PRINTED WIRING BOARD AND INFORMATION PROCESSING APPARATUS 审中-公开

    公开(公告)号：US20240080979A1

    公开(公告)日：2024-03-07

    申请号：US18223679

    申请日：2023-07-19

    Applicant: Hitachi, Ltd.

    Inventor： Goro HAMAMOTO ,  Keisuke YAMAMOTO ,  Yutaka UEMATSU ,  Shinsuke ONOE ,  Yohei OSHIMA

    IPC: H05K1/11 ,  H05K1/02

    CPC classification number: H05K1/115 ,  H05K1/0215 ,  H05K2201/10159

    Abstract: There is provided a printed wiring board including an outermost conductive layer that includes a plurality of conductive pads, a first conductive layer that includes a first inner-layer wiring and is stacked on the conductive layer, a second conductive layer that includes a second inner-layer wiring and is stacked on the conductive layer and the first conductive layer, a first signal via that connects one of the conductive pads and the first inner-layer wiring with each other, a second signal via connecting another one of the conductive pads and the second inner-layer wiring with each other, and a stitching via that is connected to a ground. The first inner-layer wiring and the second inner-layer wiring form a common wiring route in which the first inner-layer wiring and the second inner-layer wiring are stacked and disposed in a connection area in which the conductive pads are arranged.

    OPTICAL SCANNER AND IMAGING APPARATUS
    3.
    发明申请
    OPTICAL SCANNER AND IMAGING APPARATUS 审中-公开

    公开(公告)号：US20190204589A1

    公开(公告)日：2019-07-04

    申请号：US16218661

    申请日：2018-12-13

    Applicant: Hitachi, Ltd.

    Inventor： Takahiro MATSUDA ,  Yoshiho SEO ,  Satoshi OUCHI ,  Shinsuke ONOE

    IPC: G02B26/10 ,  G02B26/08

    CPC classification number: G02B26/101 ,  G02B26/0858 ,  H01L41/092

    Abstract: In an optical scanner 100, a vibration portion 101 includes first and third elements 3021 and 3023 that vibrate a light guide path 102 in a direction substantially perpendicular to an optical axis direction, and second and fourth elements 3022 and 3024 that vibrate the light guide path in a direction substantially perpendicular to a vibration direction thereof. A driving signal is applied to each of electrodes 3011 to 3014, each of which corresponds to one electrode of each of the first to fourth elements, and the other electrode 3015 is used as a common electrode having a floating potential. A driving signal generator 1007 generates a driving signal such that a median value of driving signals Vy1and Vy2 applied to the first and third elements and a median value of driving signals Vx1 and Vx2 applied to the second and fourth elements correspond to substantially the same value.

    PARTIAL DISCHARGE DETERMINATION APPARATUS AND PARTIAL DISCHARGE DETERMINATION METHOD
    6.
    发明公开
    PARTIAL DISCHARGE DETERMINATION APPARATUS AND PARTIAL DISCHARGE DETERMINATION METHOD 审中-公开

    公开(公告)号：US20240183894A1

    公开(公告)日：2024-06-06

    申请号：US18284934

    申请日：2022-06-07

    Applicant: HITACHI, LTD.

    Inventor： Hiromichi YAMADA ,  Shinsuke ONOE ,  Mitsuyasu KIDO

    IPC: G01R31/14 ,  G01R31/28 ,  G01R31/58

    CPC classification number: G01R31/14 ,  G01R31/2846 ,  G01R31/58

    Abstract: A partial discharge determination method executed in a partial discharge determination apparatus that determines whether or not partial discharge has occurred in a power transmission facility includes: acquiring measurement data representing a charge amount and a phase of each partial discharge occurring in the power transmission facility; removing or reducing noise included in the measurement data based on statistical information; generating φ-q-n data representing a charge amount, a phase, and the number of pulses of each of the partial discharge and the noise included in the measurement data from the measurement data from which the noise has been removed or reduced; and determining whether or not at least the partial discharge has occurred by using a learning model generated by performing machine learning using the φ-q-n data of the partial discharge and the noise based on the φ-q-n data generated by a φ-q-n data generation unit.

    Video Device
    7.
    发明申请
    Video Device 有权

    公开(公告)号：US20210168264A1

    公开(公告)日：2021-06-03

    申请号：US16627914

    申请日：2018-06-01

    Applicant: Hitachi, Ltd.

    Inventor： Takahiro MATSUDA ,  Yoshiho SEO ,  Satoshi OUCHI ,  Shinsuke ONOE

    IPC: H04N3/02 ,  H04N5/04 ,  H04N5/76 ,  H04N5/225 ,  G02B26/10

    Abstract: To propose an optical scanning method for a video device including an optical scanning unit in which one end of a light guide path has a protruding beam-shaped structure. The video device includes the optical scanning unit having the light guide path in which light enters from one end and emits from the other end, and a vibration unit configured to apply vibration to the light guide path via a joint unit in a vicinity of the other end of the light guide path; a drive signal generation unit that generates a drive signal for inducing vibration in the vibration unit; and a scanning trajectory control unit which has a function of independently vibrating the light guide path in a first direction substantially perpendicular to an optical axis direction of the light guide path, and in a second direction substantially perpendicular to the optical axis direction of the light guide path and substantially perpendicular to the first direction by the vibration unit, and which generates a first drive signal configured to drive the vibration unit in the first direction and a second drive signal configured to drive the vibration unit in the second direction with any pattern. The scanning trajectory control unit generates the first drive signal and the second drive signal as sine waves having different phases and a substantially same frequency, and sets a modulation amount of an amplitude modulation of a sine wave of the second drive signal to be larger than a modulation amount of an amplitude modulation of a sine wave of the first drive signal.

    Optical Scanning Device, Imaging Device, and Distance Measurement Device
    9.
    发明申请
    Optical Scanning Device, Imaging Device, and Distance Measurement Device 审中-公开

    公开(公告)号：US20180205854A1

    公开(公告)日：2018-07-19

    申请号：US15869830

    申请日：2018-01-12

    Applicant: Hitachi, Ltd.

    Inventor： Shinsuke ONOE ,  Toshiteru NAKAMURA ,  Kenichiro YAMADA ,  Takahiro MATSUDA ,  Yoshiho SEO

    IPC: H04N3/02 ,  H04N3/28

    CPC classification number: H04N3/02 ,  G01S7/4817 ,  G01S7/4818 ,  G01S17/08 ,  G01S17/42 ,  G02B6/4206 ,  G02B6/4239 ,  H04N3/28

    Abstract: An optical scanning device for displaying or capturing an image is used, the device including: an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, wherein the unit includes: a light guide path configured to guide incident light to output the emitted light from an emission end; and a vibration unit configured to vibrate the emission end; a light emission control unit configured to control light emission of the emitted light; a polar coordinate generation unit configured to generate a radius and a deflection angle relating to the spiral trajectory; a driving signal generation unit configured to generate a driving signal for driving the vibration unit; an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output an corrected angle; and a coordinate calculation unit configured to calculate coordinates of an image.

    HOLOGRAPHIC STORAGE DEVICE
    10.
    发明申请
    HOLOGRAPHIC STORAGE DEVICE 审中-公开
    全景存储设备

    公开(公告)号：US20160284374A1

    公开(公告)日：2016-09-29

    申请号：US15034998

    申请日：2013-11-08

    Applicant: HITACHI, LTD.

    Inventor： Kenichiro YAMADA ,  Shinsuke ONOE ,  Kouichirou NISHIMURA

    IPC: G11B7/0065

    CPC classification number: G11B7/0065 ,  G03H1/041 ,  G03H2223/13 ,  G11B7/1369

    Abstract: The problem addressed by the present invention is to increase the use efficiency of a holographic storage medium, achieving an increase in the number of storage layers, and to achieve favorable and stable storage maintaining the storage quality of each pixel of a page interior and page exterior. As a solution, the present invention is provided with: a phase mask that adds phase information to signal light; a phase mask drive unit that drives the phase mask; a phase mask control unit that controls the phase mask drive unit; and a phase mask drive speed detection unit that detects the drive speed of the phase mask. When the phase mask drive speed obtained by the phase mask drive speed detection unit is contained within a predetermined range, the storage of information is executed.

    Abstract translation: 本发明解决的问题是提高全息存储介质的使用效率，实现存储层数量的增加，实现有利且稳定的存储，保持了页面内部和页面外部的每个像素的存储质量 。 作为解决方案，本发明提供有：将相位信息添加到信号光的相位掩模; 驱动相位掩模的相位掩模驱动单元; 相位掩模控制单元，控制相位掩模驱动单元; 以及相位掩模驱动速度检测单元，其检测相位掩模的驱动速度。 当由相位掩模驱动速度检测单元获得的相位掩模驱动速度包含在预定范围内时，执行信息的存储。

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