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公开(公告)号：US20220003864A1
公开(公告)日：2022-01-06
申请号：US17481233
申请日：2021-09-21
Inventor： Yugo Nose , Shinzo KOYAMA , Akihiro ODAGAWA , Shigetaka KASUGA , Manabu USUDA
IPC: G01S17/08 , H01L31/107 , G01S7/48
Abstract: A distance measuring method according to the present disclosure includes: measuring, in an environment where background light is applied to an object, the illuminance of the background light; setting a distance measuring range based on the illuminance of the background light; setting, based on the distance measuring range set, an image capturing condition for an image capturer including a plurality of pixels each including an avalanche photo diode (APD) and an emission condition in which light is emitted from a light source; and measuring a distance to the object by controlling the image capturer and the light source based on the image capturing condition and the emission condition that are set.
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公开(公告)号：US20210368119A1
公开(公告)日：2021-11-25
申请号：US17274133
申请日：2019-09-05
Inventor： Yutaka HIROSE , Akihiro ODAGAWA , Shinzo KOYAMA
IPC: H04N5/378 , H04N5/3745 , H04N5/351
Abstract: A solid-state image sensor capable of detecting a photon and having smaller circuit scale is provided. The solid-state image sensor includes a pixel array including a plurality of pixel cells, a pixel driving circuit configured to drive the plurality of pixel cells, a readout circuit, and a plurality of readout wires corresponding to respective columns of the pixel cell. Each of the plurality of pixel cells includes an avalanche photodiode configured to detect a photon by avalanche multiplication occurring when one photon enters, and a transfer transistor configured to transfer a detection result of the photon to the corresponding readout wire. The readout circuit determines whether a photon is detected or not, and outputs a determination result.
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3.发明申请公开(公告)号：US20210033730A1
公开(公告)日：2021-02-04
申请号：US16981587
申请日：2019-03-06
Inventor： Shigeru SAITOU , Motonori ISHII , Masato TAKEMOTO , Shinzo KOYAMA
Abstract: A distance measuring device is to be connected to a wave transmitter and a wave receiver. The distance measuring device includes a distance measuring unit, which calculates a distance to the target based on a time interval between transmission of a measuring wave from a wave transmitter and reception of the measuring wave at a wave receiver. The target may be present across a preceding distance range and a succeeding distance range which are continuous with each other and both of which belong to a plurality of distance ranges defined by dividing a measurable distance range. In such a situation, the distance measuring unit calculates the distance to the target based on respective amounts of a preceding wave received at the wave receiver over a period corresponding to the preceding distance range and a succeeding wave received at the wave receiver over a period corresponding to the succeeding distance range.
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公开(公告)号：US20180329063A1
公开(公告)日：2018-11-15
申请号：US16040624
申请日：2018-07-20
Inventor： Masato TAKEMOTO , Shinzo KOYAMA , Motonori ISHII , Shigeru SAITOU , Akito INOUE
CPC classification number: G01S17/105 , G01C3/06 , G01S7/4863 , G01S7/487 , G01S7/497 , G01S17/10
Abstract: A distance measuring device includes a controller and a distance calculator. The controller sets, in a first time period, a first measurement time range corresponding to a first measurement distance range; causes a light emitter to emit light and places a light receiver into an exposure state, in the first measurement time range; sets, in a second time period, a second measurement time range corresponding to a second measurement distance range; and causes the light emitter to emit light and places the light receiver into an exposure state, in the second measurement time range. At least one measurement condition is different between the first and second time periods. The distance calculator calculates the distance from the distance measuring device to a measurement target, based on the time from the emission to the reflection of light. The time is in at least one of the first and second time periods.
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公开(公告)号：US20230420915A1
公开(公告)日：2023-12-28
申请号：US18466405
申请日：2023-09-13
Inventor： Yugo NOSE , Manabu USUDA , Masayuki SAWADA , Shinzo KOYAMA , Masato TAKEMOTO
CPC classification number: H01S5/06808 , H01S5/0428
Abstract: The present disclosure allows a light-emitting device to detect a failure of a light-emitting circuit without affecting the waveform of a pulse current to be supplied to a light source element. The light-emitting device includes: a light-emitting circuit including a light source element; and a power supply configured to supply electric charges to the light-emitting circuit. The light-emitting circuit is provided between a power supply node and a ground node. The power supply is connected to the power supply node via a power supply line. A monitor detects an abnormal state of the light-emitting circuit by monitoring the voltage of the power supply line or the internal voltage of the power supply.
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Patent Agency Ranking
公开(公告)号：US20230156370A1
公开(公告)日：2023-05-18
申请号：US18098451
申请日：2023-01-18
Inventor： Masaki TAMARU , Shigetaka KASUGA , Shinzo KOYAMA
IPC: H04N25/771 , H04N25/50 , H04N25/78
CPC classification number: H04N25/771 , H04N25/50 , H04N25/78
Abstract: A solid-state imaging apparatus includes a plurality of pixel circuits arranged in a matrix. Each pixel circuit includes: a photodiode; a first charge storage that stores a charge; a floating diffusion region that stores a charge; a second charge storage that stores a charge; a first transfer transistor that transfers a charge from the photodiode to the first charge storage; a second transfer transistor that transfers a charge from the first charge storage to the floating diffusion region; a first reset transistor that resets the floating diffusion region; and an accumulating transistor for accumulating a charge of the floating diffusion region in the second charge storage. The capacitance of the first charge storage is greater than the capacitance of the floating diffusion region, and the capacitance of the second charge storage is greater than the capacitance of the floating diffusion region.
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公开(公告)号：US20230078828A1
公开(公告)日：2023-03-16
申请号：US17913089
申请日：2020-03-31
Inventor： Yutaka HIROSE , Yusuke YUASA , Shigeru SAITOU , Shinzo KOYAMA , Akihiro ODAGAWA , Masayuki SAWADA
Abstract: An information processing system includes an object information generator and an output unit. The object information generator generates object information. A piece of the object information indicates a feature of an object present in a target distance section. The target distance section is one selected from a plurality of distance sections defined by dividing the distance measurable range in accordance with differences in elapsed times from a point of time when a light emitting unit emits a measuring light. The object information generator generates the piece of the object information based on a distance section signal associated with the target distance section. The output unit outputs the object information.
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公开(公告)号：US20210055406A1
公开(公告)日：2021-02-25
申请号：US16977322
申请日：2018-11-07
Inventor： Shinzo KOYAMA
IPC: G01S13/86 , G01S17/89 , G01S17/931 , G01S13/931
Abstract: Provided is an object sensing device that can obtain an image having a higher resolution in bad weather such as fog and rain. This object sensing device for sensing an object includes a radar that emits an electromagnetic wave to the object and generates a signal indicating a location of the object, a light source that emits light to the object, a sensor that obtains an image of the object, and a processor. The processor controls, based on the signal, timing of emission of the light by the light source, and exposure of the sensor.
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公开(公告)号：US20240004037A1
公开(公告)日：2024-01-04
申请号：US18466458
申请日：2023-09-13
Inventor： Yuki SUGIURA , Akito INOUE , Shigeru SAITOU , Shinzo KOYAMA
CPC classification number: G01S7/4816 , G01S7/484 , G01S17/10
Abstract: A distance measuring device includes: a light emitting unit; a pixel array including a plurality of pixels arranged in a matrix; and a control unit calculating the distance to a measuring target. Each of the plurality of pixels includes: an avalanche photodiode; a primary accumulation region for temporarily holding a signal charge; and a plurality of memory elements provided in parallel with respect to the primary accumulation region. The control unit performs a plurality of times of light exposure at timings corresponding to different distance sections within one pulse period of outgoing light from the light emitting unit, allows signal charges generated after the respective times of light exposure to be accumulated in the different memory elements, and reads out the signal charges to calculate the distance to the measuring target.
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10.发明公开公开(公告)号：US20230386058A1
公开(公告)日：2023-11-30
申请号：US18448712
申请日：2023-08-11
Inventor： Yusuke YUASA , Shigeru SAITOU , Yugo NOSE , Shota YAMADA , Shinzo KOYAMA , Masayuki SAWADA , Yutaka HIROSE , Akihiro ODAGAWA
CPC classification number: G06T7/55 , G06T7/11 , G06T7/73 , G06T11/00 , G06T2207/20132 , G06T2207/10028
Abstract: In an object information generation system, an imaging unit is configured to capture a plurality of segment images respectively corresponding to a plurality of distance segments dividing a target space. In a signal processor, the object region extraction unit extracts, from a plurality of segment images, an object region that is a pixel region including an image of the object. An object information generation unit determines, for the object region, a window in which calculation-target pixels are cut out, and generates distance information of the object by calculation using information of a plurality of pixels in the window for two or more segment images.
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