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公开(公告)号：US20220011436A1
公开(公告)日：2022-01-13
申请号：US17482365
申请日：2021-09-22
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Motonori ISHII , Masato TAKEMOTO
IPC: G01S17/894 , G01S17/10 , G06T7/11
Abstract: A distance measurement device includes: an image capturer that captures N segmental images corresponding to N segmental distances into which a distance measurement range is divided; and a range image generator that generates a range image from the N segmental images. The range image generator determines: among segmental pixels included in the N segmental images, a segmental pixel having a maximum signal value from N segmental pixels at the same pixel position among pixel positions; a value indicating a segmental distance of the segmental pixel having the maximum signal value to be a distance value of the pixel position of the range image, when the maximum signal value is greater than or equal to a threshold; and a value indicating a value outside the distance measurement range to be the distance value of the pixel position of the range image, when the maximum signal value is less than the threshold.
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2.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：US20240004041A1
公开(公告)日：2024-01-04
申请号：US18466429
申请日：2023-09-13
Inventor： Shota YAMADA , Masato TAKEMOTO , Shigeru SAITOU
IPC: G01S7/484 , G01S17/894 , G01S7/4865
CPC classification number: G01S7/484 , G01S17/894 , G01S7/4865
Abstract: A distance measuring device includes: a light source configured to project pulsed light; a light receiver configured to receive reflected light; a distance measurement controller configured to select, for distance measurement, one of distance measurement sections set in accordance with distances, and control operation times of the light source and the light receiver in accordance with the selected one of the distance measurement sections; and a distance image generator configured to generate a section image from a signal output from the light receiver, and combine section images corresponding to the distance measurement sections to generate a distance image. The distance measurement controller includes a random number generator configured to generate random number data for selecting one of the distance measurement sections randomly.
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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：US20250148742A1
公开(公告)日：2025-05-08
申请号：US18838119
申请日：2023-03-23
Inventor： Masato TAKEMOTO , Akihiro ODAGAWA , Shinzo KOYAMA , Shigeru SAITOU
Abstract: An image processing method includes: first processing of acquiring a range gate image using a range gate imaging device that captures an image of a set distance range for a predetermined capture area; second processing of searching for a detection target in the range gate image using a search window having a size corresponding to a capture distance from the range gate imaging device to the set distance range; and third processing of synthesizing, when a window region satisfying a predetermined condition is detected in the range gate image in the second processing, object information included in the window region and a grayscale image acquired using a grayscale imaging device that captures a grayscale image of the predetermined capture area and outputting the result.
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公开(公告)号：US20230408331A1
公开(公告)日：2023-12-21
申请号：US18461314
申请日：2023-09-05
Inventor： Masato TAKEMOTO , Shota YAMADA , Shinzo KOYAMA
IPC: G01J1/44 , H01L31/02 , H04N25/772
CPC classification number: G01J1/44 , H01L31/02027 , H04N25/772 , G01J2001/4466 , G01J2001/448
Abstract: A voltage control system has a light receiving array part receiving incident light and a light shielding array part shielding light receiving elements from incident light by a light shielding mechanism. The voltage control system also includes: a voltage application unit applying a bias voltage to an anode terminal; a multiplication state determination unit determining the multiplication state of the light shielding array part based on output signals from cathodes of the light receiving elements in the light shielding array part; and a voltage setting unit performing voltage setting for the bias voltage to be output from the voltage application unit based on the determination results from the multiplication state determination unit.
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公开(公告)号：US20200097702A1
公开(公告)日：2020-03-26
申请号：US16494742
申请日：2018-03-12
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII
Abstract: An image recognition device includes: a luminance image generator and a distance image generator that generate a luminance image and a distance image, respectively, based on an image signal of an imaging target object output from a photoreceptor element; a target object recognition processor that extracts a target-object candidate from the luminance image using a machine learning database; and a three-dimensional object determination processor that uses the distance image to determine whether the extracted target-object candidate is a three-dimensional object. If it is determined that the target-object candidate is not a three-dimensional object, the target-object candidate extracted from the luminance image is prevented from being used, in the machine learning database, as image data for extracting a feature value of a target object.
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公开(公告)号：US20180306954A1
公开(公告)日：2018-10-25
申请号：US16010954
申请日：2018-06-18
Inventor： Shinzo KOYAMA , Motonori ISHII , Shigeru SAITOU , Masato TAKEMOTO , Tsuyoshi TANAKA
CPC classification number: G02B5/282 , B60J1/00 , B60J1/001 , B60J1/02 , B60J1/18 , B60J1/20 , B60R11/02 , B60Y2400/3015 , G01S7/481 , G01S7/4876 , G01S17/93 , G01S17/936 , G02B5/26 , G02B5/28 , H01L31/0232 , H04N7/18
Abstract: Heat-blocking filter is a heat-blocking filter to be installed in a window glass of a vehicle. The heat-blocking filter substantially transmits visible light and infrared light in a first wavelength range, and substantially blocks infrared light outside the first wavelength range.
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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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