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    Video Device
    5.
    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
    7.
    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.

    INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS AND RECORDING MEDIA
    8.
    发明申请
    INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS AND RECORDING MEDIA 有权
    信息记录装置，信息再现装置和记录媒体

    公开(公告)号：US20130188011A1

    公开(公告)日：2013-07-25

    申请号：US13845491

    申请日：2013-03-18

    Applicant: HITACHI, LTD.

    Inventor： Takahiro MATSUDA

    IPC: G06T7/40 ,  H04N1/03

    CPC classification number: G11B7/00772 ,  G03H1/265 ,  G11B7/00781 ,  G11B7/08564

    Abstract: An apparatus for recording information in an optical-information recording media by holography includes a signal-light irradiation unit, a reference-light irradiation unit, a reference light angle adjustment unit, and a positioning unit for positioning irradiation positions of the signal light and the reference light. The optical-information recording media is divided into N (N≧2) recording regions, M multiplexed information can be recorded in the respective recording regions by the reference light angle adjustment unit which changes the angle of the reference light at M angles (θ1, θ2, . . . , and θM) corresponding to a multiplexing number (M≧2), management information for the M multiplexed information is multiplexed and recorded in the same recording region as a-th information (1≦a≦M) with a reference light angle θa, and the management information on all the N recording regions are recorded at a common reference light angle.

    Abstract translation: 用于通过全息术在信息记录介质中记录信息的装置包括信号光照射单元，参考光照射单元，参考光角度调节单元和用于定位信号光的照射位置和 参考灯 光信息记录介质被划分为N（N> = 2）个记录区域，M个多路复用信息可以通过参考光角度调节单元记录在各个记录区域中，该参考光角度调整单元改变参考光的角度（M° 对应于多路复用数（M> = 2）的多路复用信息的管理信息被多路复用并记录在与第一信息相同的记录区域中（1 @ a @ M） 具有参考光角度θa，并且以公共参考光角度记录所有N个记录区域上的管理信息。

    OPTICAL SCANNER AND IMAGING APPARATUS
    9.
    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.

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