Patents by Inventor Ryohei Ikeno
Ryohei Ikeno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10101452Abstract: In a distance measuring device, a pixel G includes sub pixels Po and Pe in a row direction. Floating diffusion parts Fd1 to Fd4 detect charge quantities relating to reflected modulated light Lb in four terms which are delayed in start by every ¼ of a period of emitted modulated light La in order. A binning group Gv is configured by an array part that the two sub pixels Po and the two sub pixels Pe are adjacent to each other in a row direction.Type: GrantFiled: February 16, 2017Date of Patent: October 16, 2018Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Ryohei Ikeno, Hiroshige Goto
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Publication number: 20170276789Abstract: In a distance measuring device, a pixel G includes sub pixels Po and Pe in a row direction. Floating diffusion parts Fd1 to Fd4 detect charge quantities relating to reflected modulated light Lb in four terms which are delayed in start by every ¼ of a period of emitted modulated light La in order. A binning group Gv is configured by an array part that the two sub pixels Po and the two sub pixels Pe are adjacent to each other in a row direction.Type: ApplicationFiled: February 16, 2017Publication date: September 28, 2017Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Ryohei IKENO, Hiroshige GOTO
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Patent number: 9414032Abstract: A video projection apparatus includes: a light source; an optical deflector having a mirror for reflecting light to project a view field, an actuator for rocking the mirror with an axis of the mirror and a sensor provided in the vicinity of the actuator; and a control unit. The control unit generates a sine-wave voltage applied to the actuator and a cosine-wave voltage; calculates a first convolution between the sine-wave voltage and a sense voltage from the sensor; calculates a second convolution between the cosine-wave voltage and the sense voltage; converts an orthogonal coordinate formed by the first convolution and the second convolution into a polar coordinate formed by a radius component and an angle component; and sweeps the frequency of the first and second voltages so that the frequency is defined as a resonant frequency when the radius component is maximum.Type: GrantFiled: October 19, 2015Date of Patent: August 9, 2016Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Ryohei Ikeno, Takao Saito
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Publication number: 20160119596Abstract: A video projection apparatus includes: a light source; an optical deflector having a mirror for reflecting light to project a view field, an actuator for rocking the mirror with an axis of the mirror and a sensor provided in the vicinity of the actuator; and a control unit. The control unit generates a sine-wave voltage applied to the actuator and a cosine-wave voltage; calculates a first convolution between the sine-wave voltage and a sense voltage from the sensor; calculates a second convolution between the cosine-wave voltage and the sense voltage; converts an orthogonal coordinate formed by the first convolution and the second convolution into a polar coordinate formed by a radius component and an angle component; and sweeps the frequency of the first and second voltages so that the frequency is defined as a resonant frequency when the radius component is maximum.Type: ApplicationFiled: October 19, 2015Publication date: April 28, 2016Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Ryohei IKENO, Takao SAITO
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Patent number: 8294782Abstract: An electromagnetic field high speed imaging apparatus, using an image sensing element having a filter function for each pixel, converts a local polarization state in detection light containing a difference frequency component ?f (|fLO?fRF|) between the modulation frequency fLO of irradiated light and the frequency fRF of the electromagnetic field emitted from a subject into local intensity of light, and captures it by an image sensor of an imaging unit to generate a two-dimensional image of distribution of the near electromagnetic field emitted from the subject. Each pixel of the image sensor comprises a photoelectric conversion element for converting the detection light from the optical unit into an electric charge, a plurality of charge storages, and a charge splitting part for dividing the electric charge generated in the photoelectric conversion element between the plurality of charge storages.Type: GrantFiled: August 13, 2010Date of Patent: October 23, 2012Assignees: Stanley Electric Co., Ltd., National Institute of Information and Communications TechnologyInventors: Ryohei Ikeno, Masahiro Tsuchiya
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Publication number: 20110043653Abstract: An electromagnetic field high speed imaging apparatus, using an image sensing element having a filter function for each pixel, converts a local polarization state in detection light containing a difference frequency component ?f (|fLO?fRF|) between the modulation frequency fLO of irradiated light and the frequency fRF of the electromagnetic field emitted from a subject into local intensity of light, and captures it by an image sensor of an imaging unit to generate a two-dimensional image of distribution of the near electromagnetic field emitted from the subject. Each pixel of the image sensor comprises a photoelectric conversion element for converting the detection light from the optical unit into an electric charge, a plurality of charge storages, and a charge splitting part for dividing the electric charge generated in the photoelectric conversion element between the plurality of charge storages.Type: ApplicationFiled: August 13, 2010Publication date: February 24, 2011Applicants: Stanley Electric Co., Ltd., National Institute of Information and Communications TechnologyInventors: Ryohei Ikeno, Masahiro Tsuchiya
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Patent number: 7697119Abstract: A range image generating apparatus capable of preventing or reducing generation of range images with interference, which contain e.g., pixels with erroneous distance values is provided. The range image generating apparatus includes: a light source radiating a light; an image pickup element; a range image generating unit; a frequency changing unit that changes a modulation frequency for each frame rate or charge storage time; and a control unit that controls the light source and the image pickup element in synchronization with the modulation frequency changed by the frequency changing unit.Type: GrantFiled: November 11, 2008Date of Patent: April 13, 2010Assignee: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Hideki Urabe
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Patent number: 7645974Abstract: The disclosed subject matter relates to a method and distance measurement apparatus for measuring a distance to an object, which can include a light source, a solid state camera, a controller and a distance data generator. The light source can be configured to emit a modulated light towards an object, and the solid state camera can convert the light reflected from the object into charges. The distance data generator can be configured to calculate the distance based on the charges, and the controller can be configured to adjust the modulated light to be more favorable under various circumstances. Thus, the method of the disclosed subject matter can accurately measure distance under various circumstances and can result in providing a distance measurement apparatus with a simple configuration and at low cost, and can be used as a sensor for distance measurement of an obstacle and the like in a vehicle, security system, robot, etc.Type: GrantFiled: March 27, 2008Date of Patent: January 12, 2010Assignee: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Fumio Kubo
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Publication number: 20090278174Abstract: A pixel structure of a solid-state image sensor in which residual electrons in a photodiode is reduced and which has a first-stage gate that is arranged adjacent to the photodiode and controls read-out of electrons generated in the photodiode, a second-stage gate that is adjacent to the first-stage gate on the rear stage of the gate at a predetermined gap and controls movement of electrons read out by the readout control of the first-stage gate to the plurality of the charge-storage sections, and a plurality of third-stage gates that are adjacent to the second-stage gate on the rear stage of the gate at a predetermined gap, severally arranged corresponding to the plurality of the charge-storage sections, and perform control of distributing the electrons moved by the movement control of the second-stage gate severally to the plurality of the charge-storage sections, and gradient on which electrons are moved in the first-stage gate direction is formed on the potential of the photodiode.Type: ApplicationFiled: May 11, 2009Publication date: November 12, 2009Applicants: Brainvision Inc., STANLEY ELECTRIC CO., LTD.Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata, Ryohei Ikeno
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Publication number: 20090122297Abstract: A range image generating apparatus capable of preventing or reducing generation of range images with interference which contain e.g., pixels with erroneous distance values is provided. The range image generating apparatus includes: a light source radiating a light; an image pickup element; a range image generating unit; a frequency changing unit that changes a modulation frequency for each frame rate or charge storage time; and a control unit that controls the light source and the image pickup element in synchronization with the modulation frequency changed by the frequency changing unit.Type: ApplicationFiled: November 11, 2008Publication date: May 14, 2009Applicant: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Hideki Urabe
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Publication number: 20080237445Abstract: The disclosed subject matter relates to a method and distance measurement apparatus for measuring a distance to an object, which can include a light source, a solid state camera, a controller and a distance data generator. The light source can be configured to emit a modulated light towards an object, and the solid state camera can convert the light reflected from the object into charges. The distance data generator can be configured to calculate the distance based on the charges, and the controller can be configured to adjust the modulated light to be more favorable under various circumstances. Thus, the method of the disclosed subject matter can accurately measure distance under various circumstances and can result in providing a distance measurement apparatus with a simple configuration and at low cost, and can be used as a sensor for distance measurement of an obstacle and the like in a vehicle, security system, robot, etc.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Inventors: Ryohei IKENO, Tadashi Kawata, Fumio Kubo