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公开(公告)号：US20180299553A1
公开(公告)日：2018-10-18
申请号：US16012860
申请日：2018-06-20
Inventor： Masato TAKEMOTO , Shinzo KOYAMA , Motonori ISHII , Shigeru SAITOU
Abstract: A distance measurement device includes: a pulse light emitter that emits pulse light to a measurement target; an optical sensor that receives reflected light which is the pulse light reflected by the measurement target; and a controller that controls a light emission timing of the pulse light emitted by the pulse light emitter, and determines a distance to the measurement target, from a light reception timing of the reflected light detected by the optical sensor. The controller sets the light emission timing in each of N periods (N being a natural number less than K) selected randomly from continuous K periods (K being a natural number greater than or equal to 2) to a timing that is delayed by a random first time from a start time of the period.
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公开(公告)号：US20230353906A1
公开(公告)日：2023-11-02
申请号：US18345805
申请日：2023-06-30
Inventor： Toru OKINO , Shinzo KOYAMA , Shigeru SAITOU , Masato TAKEMOTO , Masaki TAMARU , Hiroshi KOSHIDA , Shigetaka KASUGA , Yugo NOSE
IPC: H04N25/779 , H04N25/69
CPC classification number: H04N25/779 , H04N25/69
Abstract: Effective pixels and a failure detection pixel are connected to a control signal line for controlling an operation of the pixels and to an output signal line for outputting a result of failure detection in the pixels. Among the effective pixels, the effective pixels in a same row are connected in common to a same control signal line, and the effective pixels in a same column are connected in common to a same output signal line. The failure detection pixel is connected in common to at least one of the control signal line or the output signal line and configured to detect a failure in any of the effective pixels connected to the at least one of the control signal line or the output signal line.
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公开(公告)号：US20230316765A1
公开(公告)日：2023-10-05
申请号：US18331532
申请日：2023-06-08
Inventor： Manabu USUDA , Shinzo KOYAMA , Yuki SUGIURA
CPC classification number: G06V20/52 , G06T7/11 , G06T7/50 , G06T7/70 , G06V10/761 , G08B21/00 , G06T2207/10028
Abstract: It is made possible to monitor the periphery of a target object more accurately, using an imaging device that generates distance image data by sub-range analysis. For a target object present across first and second distance zones adjacent to each other, a first position at a near end position of the first distance zone, a second position at a boundary position between the first and second distance zones, and a third position indicating the position at a far end position of the second distance zone are obtained. Location data of the target object is generated based on location information of the second position with respect to a straight line connecting the first position and third position.
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公开(公告)号：US20220005855A1
公开(公告)日：2022-01-06
申请号：US17479846
申请日：2021-09-20
Inventor： Masaki TAMARU , Shigetaka KASUGA , Yusuke SAKATA , Mitsuyoshi MORI , Shinzo KOYAMA
IPC: H01L27/146
Abstract: A plurality of pixel cells are provided on a semiconductor substrate and arranged in a two-dimensional array. At least one of the plurality of pixel cells includes a light receiving part, a pixel circuit, and a second transistor. The light receiving part receives an incident light to generate an electrical charge. The pixel circuit includes first transistors arranged side by side along a first direction and a charge retention part that retains the electrical charge generated by the light receiving part. The pixel circuit outputs a light receiving signal in accordance with the electrical charge generated by the light receiving part. The second transistor connects the charge retention part to a memory part that stores the electrical charge. Seen along a thickness direction of the semiconductor substrate, the second transistor is apart from the first transistors in a second direction orthogonal to the first direction.
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公开(公告)号：US20220003876A1
公开(公告)日：2022-01-06
申请号：US17480475
申请日：2021-09-21
Inventor： Shigetaka KASUGA , Shinzo KOYAMA , Masaki TAMARU , Hiroshi KOSHIDA , Yugo NOSE , Masato TAKEMOTO
IPC: G01S17/894 , G01S17/10 , G01S7/4865 , H01L31/107
Abstract: A distance-image obtaining method includes: (A) setting a plurality of distance-divided segments in a depth direction, and (B) obtaining a distance image based on each of the plurality of distance-divided segments set. The obtaining of the distance image includes: obtaining a plurality of distance images by imaging two or more of the plurality of distance-divided segments, to obtain a first distance image group; and obtaining a plurality of distance images by imaging distance-divided segments, among the plurality of distance-divided segments, in a phase different from a phase of the two or more of the plurality of distance-divided segments, to obtain a second distance image group.
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Patent Agency Ranking
公开(公告)号：US20220003875A1
公开(公告)日：2022-01-06
申请号：US17480458
申请日：2021-09-21
Inventor： Manabu USUDA , Shinzo KOYAMA , Akihiro ODAGAWA
IPC: G01S17/894 , G01S17/10
Abstract: A distance measurement imaging system includes a first acquisition unit that acquires first 2D data from an imaging unit, a second acquisition unit that acquires first 3D data from a distance measurement unit, a third acquisition unit that acquires second 2D data and second 3D data from a detection unit, and a computation unit. The imaging unit acquires a first 2D image of a target space. The distance measurement unit acquires a first 3D image of the target space. The detection unit acquires a second 2D image and a second 3D image of the target space with a coaxial optical system. The computation unit executes a processing for making an association between the first 2D data and the second 2D data and a processing for making an association between the first 3D data and the second 3D data.
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27.发明申请公开(公告)号：US20210072380A1
公开(公告)日：2021-03-11
申请号：US16982405
申请日：2019-03-14
Inventor： Hiroshi KOSHIDA , Shinzo KOYAMA , Motonori ISHII , Shigetaka KASUGA
IPC: G01S17/10 , G01S7/481 , G01S7/4865
Abstract: A distance measuring device is to be connected to a wave transmission module to transmit a measuring wave and a wave reception module including a first wave receiver and a second wave receiver, both of which receive the measuring wave reflected from a target. In this distance measuring device, a first wave reception period in which the first wave receiver receives the measuring wave and a second wave reception period in which the second wave receiver receives the measuring wave overlap with each other on a time axis. In addition, in this distance measuring device, a time lag is provided between respective beginning times of the first and second wave reception periods. The time lag is shorter than either the first wave reception period or the second wave reception period.
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公开(公告)号：US20200271783A1
公开(公告)日：2020-08-27
申请号：US16494960
申请日：2018-03-12
Inventor： Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII , Yusuke FUKUSHIMA , Susumu FUKUSHIMA
Abstract: A distance measuring device includes a light emitter; a light receiver; a protection cover that is located on an optical path between the light emitter and the light receiver; a mode switch that switches between a first mode and a second mode; a distance calculator that calculates a distance from a target object based on a difference between a time when light is emitted from the light emitter and a time when reflected light is received by the light receiver in the first mode; and an LD light emission intensity adjuster that adjusts a light emission intensity of the light emitter. The adjustment is performed such that a light emission intensity of the light emitter in the second mode is lower than a light emission intensity of the light emitter in the first mode.
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公开(公告)号：US20200025932A1
公开(公告)日：2020-01-23
申请号：US16497754
申请日：2018-03-12
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII
Abstract: An image recognition device includes a light source that emits lighting pulses to a measurement space, a image generator that generates a distance image based on reflected light acquired by a light receiving element, a reflectivity calculator that calculates a correction coefficient corresponding to a reflectivity for each measurement section, and a lighting pulse controller that controls a number of lighting pulses emitted from the light source according to the correction coefficient for each measurement section.
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30.发明申请公开(公告)号：US20180246214A1
公开(公告)日：2018-08-30
申请号：US15968918
申请日：2018-05-02
Inventor： Motonori ISHII , Shinzo KOYAMA , Masato TAKEMOTO , Shigeru SAITOU
CPC classification number: G01S17/89 , G01S7/481 , G01S7/4861 , G01S7/4863 , G01S7/487 , G01S17/10 , H04N5/332 , H04N5/3575 , H04N5/37452 , H04N5/37457 , H04N9/04553
Abstract: A plurality of pixels in a solid-state imaging device each include: a light receiving circuit that includes a light receiving element performing photoelectric conversion, sets, by an exposure signal, a photoelectric time for performing the photoelectric conversion, and outputs a light reception signal depending on whether or not incident light has reached the pixel within the photoelectric time; a counter circuit that counts, as a count value, the number of times the incident light has reached the pixel, based on the light reception signal; a comparison circuit that sets a value corresponding to the count value as a threshold, and sets a comparison signal to an on state in the case where the count value is greater than the threshold; and a storage circuit that stores, as a distance signal, a time signal when the comparison signal is in the on state.
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