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1.发明申请INFORMATION REPLAY DEVICE, INFORMATION REPLAY METHOD, INFORMATION STORAGE DEVICE, AND INFORMATION STORAGE METHOD 审中-公开信息复制设备，信息复制方法，信息存储设备和信息存储方法公开(公告)号：US20160321138A1
公开(公告)日：2016-11-03
申请号：US15109315
申请日：2014-01-20
Applicant: HITACHI, LTD.
Inventor： Yusuke NAKAMURA , Keisuke YAMAMOTO
IPC: G06F11/10 , H03M13/27 , G11B7/0065
CPC classification number: G06F11/1076 , G11B7/0065 , G11B20/1403 , G11B20/1833 , G11B20/1866 , G11B2007/240025 , H03M5/14 , H03M13/09 , H03M13/23 , H03M13/27 , H03M13/2792 , H03M13/3905 , H03M13/4138 , H03M13/63 , H03M13/6343 , H03M13/6362
Abstract: A modulation method has a high encoding rate for generating a pattern having a lower limit for the number of successive pixels in a spatial light modulator. An information recording device includes: an encoding unit that performs error correction encoding of input data; an interleaving unit that switches the output sequence of the error correction encoding unit; and an modulation unit that performs RLL modulation of the output of the interleaving unit on the basis of an RLL modulation trellis. A corresponding information reproducing device includes: a demodulation unit that uses a posteriori probability decoding based on the RLL modulation trellis, to perform RLL demodulation for reproducing recorded information; a deinterleaving unit that reverses the sequence switching; and a decoding unit that performs error correction code decoding using a posteriori probability decoding on the basis of the error correction encoding on the output of the deinterleaving unit.
Abstract translation: 调制方法具有高的编码率，用于产生具有空间光调制器中的连续像素数的下限的图案。 信息记录装置包括：对输入数据进行纠错编码的编码单元; 交错单元，其切换所述纠错编码单元的输出序列; 以及调制单元，其基于RLL调制网格来执行交织单元的输出的RLL调制。 相应的信息再现装置包括：使用基于RLL调制网格的后验概率解码的解调单元执行用于再现记录信息的RLL解调; 逆序列切换的去交错单元; 以及解码单元，其基于去交错单元的输出上的纠错编码，执行使用后验概率解码的纠错码解码。
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公开(公告)号：US20220155149A1
公开(公告)日：2022-05-19
申请号：US17449279
申请日：2021-09-29
Applicant: Hitachi, Ltd.
Inventor： Cong CHEN , Masayuki KOBAYASHI , Yusuke NAKAMURA
Abstract: The problem to be solved by the invention is to accurately detect a distant object while preventing an increase in cost. An object recognition device includes: an imaging unit configured to acquire a plurality of thermal images having an object captured therein; a stereo matching unit configured to perform stereo matching using the plurality of thermal images and calculate a distance to the object; a specific temperature region extracting unit configured to extract a specific temperature region from the thermal images; and an area ratio estimating unit configured to estimate, based on the distance to the object calculated by the stereo matching unit, a ratio of an area of the object included in a pixel for the specific temperature region.
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公开(公告)号：US20180095200A1
公开(公告)日：2018-04-05
申请号：US15721992
申请日：2017-10-02
Applicant: Hitachi, Ltd.
Inventor： Yusuke NAKAMURA , Takeshi SHIMANO
Abstract: An imaging device includes: a modulator with a first pattern, which is configured to modulate light intensity; an image sensor configured to convert light passing through the modulator to image data, and output the image data; and an image processing unit configured to restore an image on the basis of cross-correlation operation with the image data and pattern data that represents a second pattern.
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4.发明申请公开(公告)号：US20130142025A1
公开(公告)日：2013-06-06
申请号：US13752736
申请日：2013-01-29
Applicant: Hitachi, Ltd.
Inventor： Yusuke NAKAMURA
IPC: G11B7/1374
CPC classification number: G11B7/1374 , G11B7/0065 , G11B7/128
Abstract: An optical information recording/reproducing apparatus and an optical information recording/reproducing method that record information using holography, wherein the optical information recording/reproducing apparatus includes a signal generation unit that generates two-dimensional data by a two-dimensional encoding method in which a lower-limit value of a number of continuous ON/OFF pixels in an array in one direction of pixels in a two-dimensional spatial light modulator is K(K≧2, K: natural number); and a pickup that records the two-dimensional data, generated by the signal generation unit, on a hologram disc.
Abstract translation: 一种使用全息记录信息的光学信息记录/再现装置和光学信息记录/再现方法，其中光学信息记录/再现装置包括：信号生成单元，其通过二维编码方法生成二维数据，其中 二维空间光调制器中像素的一个方向上的阵列中连续的ON / OFF像素的数量的下限值为K（K> = 2，K：自然数）; 以及将由信号生成单元生成的二维数据记录在全息图盘上的拾取器。
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公开(公告)号：US20190339485A1
公开(公告)日：2019-11-07
申请号：US16070355
申请日：2016-03-02
Applicant: Hitachi, Ltd.
Inventor： Yusuke NAKAMURA , Takeshi SHIMANO
Abstract: To obtain an imaging device capable of achieving high functionality of the imaging device by facilitating detection of an incident angle of light transmitted through a grating substrate. There is provided an imaging device which includes an image sensor that converts an optical image captured by a plurality of pixels arranged in an array on an imaging surface into an image signal and outputs the image signal, a modulator that is provided on a light receiving surface of the image sensor and modulates light intensity, an image storing unit that temporarily stores the image signal output from the image sensor, and a signal processing unit that performs image processing of the image signal output from the image storing unit, and in which the modulator has a first grating pattern composed of a plurality of concentric circles, and the signal processing unit modulates the image signal output from the image storing unit with a virtual second grating pattern composed of a plurality of concentric circles so as to generate a moiré fringe image and changes a size of the concentric circle of the second grating pattern according to a focus position.
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Patent Agency Ranking
公开(公告)号：US20190268507A1
公开(公告)日：2019-08-29
申请号：US16278857
申请日：2019-02-19
Applicant: HITACHI, LTD.
Inventor： Yusuke NAKAMURA , Kazuyuki TAJIMA , Keita YAMAGUCHI
Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a grating pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate, from the sensor image, a complex sensor image comprising a complex number; and a data transmission unit configured to transmit the complex sensor image.
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公开(公告)号：US20230410455A1
公开(公告)日：2023-12-21
申请号：US18131902
申请日：2023-04-07
Applicant: HITACHI, LTD.
Inventor： Kazuyuki TAJIMA , Keiichi MITANI , Yusuke NAKAMURA
CPC classification number: G06V10/24 , G06T5/50 , G06T7/20 , G06T2207/20221
Abstract: An object of the invention is to provide a technique of performing alignment with high accuracy between a plurality of sensors even when a visual field overlapping region at the time of installation of the sensors is small in a case of imaging a subject using the plurality of sensors. An integrated image generation apparatus according to the invention generates a first pseudo visual field image that is able to be acquired by a first sensor in a first pseudo visual field generated by moving a relative position between the subject and the first sensor, and performs the alignment between the first pseudo visual field image and a second sensor image.
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公开(公告)号：US20190306443A1
公开(公告)日：2019-10-03
申请号：US16292426
申请日：2019-03-05
Applicant: HITACHI, LTD.
Inventor： Chiyo OHNO , Yusuke NAKAMURA , Kazuyuki TAJIMA , Koji YAMASAKI , Takeshi SHIMANO
Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a real pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate a complex sensor image including a complex number, from an image obtained by executing predetermined positioning for the sensor image taken through the real pattern; and an image processing unit configured to restore an image, based on an operation with the complex sensor image and data of a pattern for reconstruction.
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公开(公告)号：US20190289184A1
公开(公告)日：2019-09-19
申请号：US16289790
申请日：2019-03-01
Applicant: HITACHI, LTD.
Inventor： Kazuyuki TAJIMA , Yusuke NAKAMURA
IPC: H04N5/238
Abstract: An imaging device includes: an image sensor including a plurality of light-receiving elements, configured to generate a sensor image by photoelectrically converting received light through the light-receiving elements; and a modulating unit configured to modulate the intensity of the light received by the image sensor, through a real pattern provided at a predetermined distance from a light-receiving surface of the image sensor, and the imaging device is characterized in that the width of an aperture of the real pattern provided for the modulating unit is determined, based on the predetermined distance and a two-dimensional size of the image sensor.
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公开(公告)号：US20190182430A1
公开(公告)日：2019-06-13
申请号：US16192874
申请日：2018-11-16
Applicant: HITACHI, LTD.
Inventor： Keita YAMAGUCHI , Yusuke NAKAMURA
IPC: H04N5/232 , G02F1/1343
Abstract: A distance measurement device is characterized in that the device includes: an image sensor configured to convert light to electrical signals to generate a sensor image; a modulator configured to modulate the intensity of light projected on the image sensor, based on a pattern for shooting; a complex information generating unit configured to generate, from the sensor image, complex information including a complex number; an evaluation index array generating unit configured to generate an evaluation index array, based on phase information of the complex information; and a distance information generating unit configured to generate distance information, based on the evaluation index array.
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