Patents by Inventor Tsutomu Ishi
Tsutomu Ishi 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: 9305220Abstract: A spectrum measurement device that recognizes objects to be measured on the basis of spectral data of observed light that is detected by a spectrum sensor capable of measuring wavelength information and light intensity information. The spectrum measurement device comprises a lighting device capable of projecting light that includes a wavelength region with a high atmospheric absorption index and recognizes the distance from a vehicle to an object to be measured through a computation that uses spectral data of observed light that is obtained from the object to be measured whereupon light of at least the wavelength region with the high atmospheric absorption index is projected.Type: GrantFiled: April 8, 2011Date of Patent: April 5, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NEC CORPORATIONInventors: Ryuji Funayama, Shinya Kawamata, Yumiko Yoshikawa, Tsutomu Ishi
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Publication number: 20160077021Abstract: Disclosed is an imaging system capable of reducing the generation of interference patterns in a state in which a beam of highly coherent electromagnetic waves is enlarged to a prescribed illumination area and used for illumination by moving the prescribed illumination region within a range of motion that is smaller than the illumination region.Type: ApplicationFiled: March 19, 2014Publication date: March 17, 2016Inventors: Tsutomu ISHI, Takayuki SUDOU, Taku TSUBOI
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Patent number: 9234800Abstract: A spectrometer recognizes a measurement target on the basis of the spectral data set of observed light detected by a spectral sensor capable of measuring wavelength information and light intensity information. The spectrometer is provided with a spectral data processor. Spectral data sets are detected at two different positions by the spectral sensor, and the processor subtracts a first spectral data set from a second spectral data set, or divides the first spectral data set by the second spectral data set to calculate one phase correlation spectral data set, which is correlated to the spectral data sets at the two different positions. The processor simultaneously identifies the measurement target corresponding to the two different positions on the basis of the correlation spectral data set.Type: GrantFiled: April 8, 2011Date of Patent: January 12, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NEC CORPORATIONInventors: Shinya Kawamata, Ryuji Funayama, Tsutomu Ishi, Yumiko Yoshikawa
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Patent number: 8854464Abstract: A visibility support apparatus includes a light receiving unit receiving reflected light from an object to generate a signal for an image for each of wavelength bands, a wavelength selecting unit to set, in the image for at least one wavelength band, a set of those of pixels with comparable signal intensities which define the largest occupied area to be a reference area and to compare, for each of identification target pixels not included in the reference area, a value of the pixel in the image for each wavelength band with a pixel value of the reference area to select at least two wavelength bands which are effective for detecting the object, and a display unit to group the identification target pixels based on a wavelength band combination selected for each identification target pixel and display an image in which the object is distinguishably shown based on the grouping.Type: GrantFiled: March 2, 2011Date of Patent: October 7, 2014Assignees: NEC Corporation, Toyota Jidosha Kabushiki KaishaInventors: Tsutomu Ishi, Yumiko Yoshikawa, Ryuji Funayama, Shinya Kawamata
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Patent number: 8422019Abstract: A light with a known spectrum is emitted from a light source toward a road surface, a first reflected light that is a reflected light of the known light reflected from the road surface is received by a first light receiver, and a reflectance spectrum of the light of the road surface is calculated from a spectrum of the first reflected light received by the first light receiver and the spectrum of the known light stored in the storage unit. A second reflected light that is reflected light of an environmental light reflected from the road surface is received by a second light receiver, and a spectrum of the environmental light is calculated from a spectrum of the second reflected light received by the second light receiver and the calculated reflectance spectrum of the light of the road surface.Type: GrantFiled: February 25, 2011Date of Patent: April 16, 2013Assignees: NEC Corporation, Toyota Jidosha Kabushiki KaishaInventors: Yumiko Yoshikawa, Tsutomu Ishi, Ryuji Funayama, Shinya Kawamata
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Publication number: 20130038857Abstract: A spectrum measurement device that recognizes objects to be measured on the basis of spectral data of observed light that is detected by a spectrum sensor capable of measuring wavelength information and light intensity information. The spectrum measurement device comprises a lighting device capable of projecting light that includes a wavelength region with a high atmospheric absorption index and recognizes the distance from a vehicle to an object to be measured through a computation that uses spectral data of observed light that is obtained from the object to be measured whereupon light of at least the wavelength region with the high atmospheric absorption index is projected.Type: ApplicationFiled: April 8, 2011Publication date: February 14, 2013Applicants: NEC CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryuji Funayama, Shinya Kawamata, Yumiko Yoshikawa, Tsutomu Ishi
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Publication number: 20130027702Abstract: A spectrometer recognizes a measurement target on the basis of the spectral data set of observed light detected by a spectral sensor capable of measuring wavelength information and light intensity information. The spectrometer is provided with a spectral data processor. Spectral data sets are detected at two different positions by the spectral sensor, and the processor subtracts a first spectral data set from a second spectral data set, or divides the first spectral data set by the second spectral data set to calculate one phase correlation spectral data set, which is correlated to the spectral data sets at the two different positions. The processor simultaneously identifies the measurement target corresponding to the two different positions on the basis of the correlation spectral data set.Type: ApplicationFiled: April 8, 2011Publication date: January 31, 2013Applicants: NEC CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kawamata, Ryuji Funayama, Tsutomu Ishi, Yumiko Yoshikawa
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Publication number: 20110216196Abstract: A visibility support apparatus includes a light receiving unit receiving reflected light from an object to generate a signal for an image for each of wavelength bands, a wavelength selecting unit to set, in the image for at least one wavelength band, a set of those of pixels with comparable signal intensities which define the largest occupied area to be a reference area and to compare, for each of identification target pixels not included in the reference area, a value of the pixel in the image for each wavelength band with a pixel value of the reference area to select at least two wavelength bands which are effective for detecting the object, and a display unit to group the identification target pixels based on a wavelength band combination selected for each identification target pixel and display an image in which the object is distinguishably shown based on the grouping.Type: ApplicationFiled: March 2, 2011Publication date: September 8, 2011Applicants: NEC CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsutomu ISHI, Yumiko YOSHIKAWA, Ryuji FUNAYAMA, Shinya KAWAMATA
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Publication number: 20110216323Abstract: A light with a known spectrum is emitted from a light source toward a road surface, a first reflected light that is a reflected light of the known light reflected from the road surface is received by a first light receiver, and a reflectance spectrum of the light of the road surface is calculated from a spectrum of the first reflected light received by the first light receiver and the spectrum of the known light stored in the storage unit. A second reflected light that is reflected light of an environmental light reflected from the road surface is received by a second light receiver, and a spectrum of the environmental light is calculated from a spectrum of the second reflected light received by the second light receiver and the calculated reflectance spectrum of the light of the road surface.Type: ApplicationFiled: February 25, 2011Publication date: September 8, 2011Applicants: NEC CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yumiko YOSHIKAWA, Tsutomu ISHI, Ryuji FUNAYAMA, Shinya KAWAMATA
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Patent number: 7883911Abstract: A Schottky photodiode includes a semiconductor layer and a conductive film provided in contact with the semiconductor layer. The conductive film has an aperture and a periodic structure provided around said aperture for producing a resonant state by an excited surface plasmon in a film surface of the conductive film by means of the incident light to the film surface. The photodiode detects near-field light that is generated by at the interface between the conductive film and semiconductor layer the excited surface plasmon. The aperture has a diameter smaller than the wavelength of the incident light.Type: GrantFiled: March 11, 2009Date of Patent: February 8, 2011Assignee: NEC CorporationInventors: Keishi Oohashi, Tsutomu Ishi, Toshio Baba, Junichi Fujikata, Kikuo Makita
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Patent number: 7728366Abstract: A Schottky photodiode includes a semiconductor layer and a conductive film provided in contact with the semiconductor layer. The conductive film has an aperture and a periodic structure provided around said aperture for producing a resonant state by an excited surface plasmon in a film surface of the conductive film by means of the incident light to the film surface. The photodiode detects near-field light that is generated by at the interface between the conductive film and semiconductor layer the excited surface plasmon. The aperture has a diameter smaller than the wavelength of the incident light.Type: GrantFiled: April 5, 2005Date of Patent: June 1, 2010Assignee: NEC CorporationInventors: Keishi Oohashi, Tsutomu Ishi, Toshio Baba, Junichi Fujikata, Kikuo Makita
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Publication number: 20090176327Abstract: A Schottky photodiode includes a semiconductor layer and a conductive film provided in contact with the semiconductor layer. The conductive film has an aperture and a periodic structure provided around said aperture for producing a resonant state by an excited surface plasmon in a film surface of the conductive film by means of the incident light to the film surface. The photodiode detects near-field light that is generated by at the interface between the conductive film and semiconductor layer the excited surface plasmon. The aperture has a diameter smaller than the wavelength of the incident light.Type: ApplicationFiled: March 11, 2009Publication date: July 9, 2009Inventors: Keishi Oohashi, Tsutomu Ishi, Toshio Baba, Junichi Fujikata, Kikuo Makita
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Patent number: 7372673Abstract: In a magnetoresistive effect transducer including a pinning layer, a pinned layer, a free layer and a non-magnetic layer inserted between the pinned layer and the free layer, a longitudinal bias layer is connected directly to a part of the free layer to apply a bias magnetic field to the free layer, thus biasing a magnetization direction of the free layer so that the magnetization direction of the free layer coincides with that of the longitudinal bias layer.Type: GrantFiled: May 31, 2005Date of Patent: May 13, 2008Assignee: NEC CorporationInventors: Kazuhiko Hayashi, Keishi Ohashi, Nobuyuki Ishiwata, Masafumi Nakada, Tsutomu Ishi, Hiroaki Honjou, Kunihiko Ishihara, Jun-Ichi Fujikata, Hisao Matsutera, Hisanao Tsuge, Atsushi Kamijo
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Patent number: 7369375Abstract: A magneto-resistance effect head is provided with a lower conductive layer which is provided with a recessed portion, and a vertical bias layer is provided in the recessed portion. A first magnetic layer is provided on the lower conductive layer. On the first magnetic layer, layered in the following order are the non-magnetic layer, the fixed layer, the fixing layer, and the upper layer so as not to be placed immediately above the vertical bias layer. The non-magnetic layer, the fixed layer, the fixing layer, and the upper layer are buried in an insulation layer. Furthermore, an upper conductive layer is provided on the upper layer and the insulation layer. In the direction of the magnetic field applied by the vertical bias layer, the free layer is made greater in length than the fixed layer and the free layer is disposed in proximity to the vertical bias layer with the distance between the fixed layer and the vertical bias layer remaining unchanged.Type: GrantFiled: June 30, 2006Date of Patent: May 6, 2008Assignee: NEC CorporationInventors: Kazuhiko Hayashi, Junichi Fujikata, Tsutomu Ishi, Shigeru Mori, Keishi Ohashi, Masafumi Nakada, Kiyokazu Nagahara, Kunihiko Ishihara, Nobuyuki Ishiwata
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Patent number: 7298596Abstract: A magneto-resistance effect head is provided with a lower conductive layer which is provided with a recessed portion, and a vertical bias layer is provided in the recessed portion. A free layer is provided on the lower conductive layer. On the free layer, layered in the following order are the non-magnetic layer, the fixed layer, the fixing layer, and the upper layer so as not to be placed immediately above the vertical bias layer. The non-magnetic layer, the fixed layer, the fixing layer, and the upper layer are buried in an insulation layer. Furthermore, an upper conductive layer is provided on the upper layer and the insulation layer. In the direction of the magnetic field applied by the vertical bias layer, the free layer is made greater in length than the fixed layer and the free layer is disposed in proximity to the vertical bias layer with the distance between the fixed layer and the vertical bias layer remaining unchanged.Type: GrantFiled: June 30, 2006Date of Patent: November 20, 2007Assignee: NEC CorporationInventors: Kazuhiko Hayashi, Junichi Fujikata, Tsutomu Ishi, Shigeru Mori, Keishi Ohashi, Masafumi Nakada, Kiyokazu Nagahara, Kunihiko Ishihara, Nobuyuki Ishiwata
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Patent number: 7277261Abstract: A magneto-resistance effect head is provided with a lower conductive layer which is provided with a recessed portion, and a vertical bias layer is provided in the recessed portion. A free layer is provided on the lower conductive layer. On the free layer, layered in the following order are the non-magnetic layer, the fixed layer, the fixing layer, and the upper layer so as not to be placed immediately above the vertical bias layer. Furthermore, an upper conductive layer is provided on the upper layer and an insulation layer. In the direction of the magnetic field applied by the vertical bias layer, the free layer is made greater in length than the fixed layer and the free layer is disposed in proximity to the vertical bias layer with the distance between the fixed layer and the vertical bias layer remaining unchanged.Type: GrantFiled: June 30, 2006Date of Patent: October 2, 2007Assignee: NEC CorporationInventors: Kazuhiko Hayashi, Junichi Fujikata, Tsutomu Ishi, Shigeru Mori, Keishi Ohashi, Masafumi Nakada, Kivokazu Nagahara, Kunihiko Ishihara, Nobuyuki Ishiwata
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Patent number: 7265949Abstract: A magneto-resistance effect element is adapted that a non-magnetic layer (9, 18), a free layer (3b, 19), another non-magnetic layer (4, 25), a fixed layer (5, 26), and a fixing layer (6b, 27) are formed vertically symmetric with respect to a first magnetic layer (8b), to which a vertical bias magnetic field is applied from an underlying layer (2a) for a vertical bias layer (2b). The magneto-resistance effect element operates in CPP mode. Generally, the free layer is unavoidably subjected to the influence of a circular electric magnetic field caused by a current flowing perpendicularly to the film surface. However, in the magneto-resistance effect element, the influence of the electric magnetic field to which the free layer (3b) is subjected is opposite to that of the electric magnetic field to which the second free layer (19) is subjected, thereby canceling out the influences as a hole.Type: GrantFiled: June 30, 2006Date of Patent: September 4, 2007Assignee: NEC CorporationInventors: Kazuhiko Hayashi, Junichi Fujikata, Tsutomu Ishi, Shigeru Mori, Keishi Ohashi, Masafumi Nakada, Kiyokazu Nagahara, Kunihiko Ishihara, Nobuyuki Ishiwata
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Publication number: 20070194357Abstract: A Schottky photodiode includes a semiconductor layer and a conductive film provided in contact with the semiconductor layer. The conductive film has an aperture and a periodic structure provided around said aperture for producing a resonant state by an excited surface plasmon in a film surface of the conductive film by means of the incident light to the film surface. The photodiode detects near-field light that is generated by at the interface between the conductive film and semiconductor layer the excited surface plasmon. The aperture has a diameter smaller than the wavelength of the incident light.Type: ApplicationFiled: April 5, 2005Publication date: August 23, 2007Inventors: Keishi Oohashi, Tsutomu Ishi, Toshio Baba, Junichi Fujikata, Kikuo Makita
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Publication number: 20070047158Abstract: A magneto-resistance effect head is provided with a lower conductive layer which is provided with a recessed portion, and a vertical bias layer is provided in the recessed portion. A free layer is provided on the lower conductive layer. On the free layer, layered in the following order are the non-magnetic layer, the fixed layer, the fixing layer, and the upper layer so as not to be placed immediately above the vertical bias layer. The non-magnetic layer, the fixed layer, the fixing layer, and the upper layer are buried in an insulation layer. Furthermore, an upper conductive layer is provided on the upper layer and the insulation layer. In the direction of the magnetic field applied by the vertical bias layer, the free layer is made greater in length than the fixed layer and the free layer is disposed in proximity to the vertical bias layer with the distance between the fixed layer and the vertical bias layer remaining unchanged.Type: ApplicationFiled: June 30, 2006Publication date: March 1, 2007Inventors: Kazuhiko Hayashi, Junichi Fujikata, Tsutomu Ishi, Shigeru Mori, Keishi Ohashi, Masafumi Nakada, Kiyokazu Nagahara, Kunihiko Ishihara, Nobuyuki Ishiwata
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Patent number: 7173793Abstract: A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 ?m. A magnetic recording/reproduction apparatus has this head.Type: GrantFiled: August 5, 2004Date of Patent: February 6, 2007Assignee: NEC CorporationInventors: Nobuyuki Ishiwata, Hiroaki Honjo, Tamaki Toba, Shinsaku Saito, Yoshihiro Nonaka, Tsutomu Ishi, Mikiko Saito, Keishi Ohashi