Patents by Inventor Masahiro Shikai
Masahiro Shikai 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: 11046341Abstract: A moving path memory stores a moving path of a train in advance. A signal receiver receives satellite positioning signals. A position calculator calculates measured positions and receiver clock errors, based on the satellite positioning signals and the moving path. A error area calculator sets vector pairs, each consisting of arbitrary two vectors perpendicular to each other on a plane spanned by a tangent vector and a radial vector of a tangent circle of the moving path at the measured positions, and calculates an error area for each vector pair, based on the measured positions, the receiver clock errors, and positions of positioning satellites. A position range extractor extracts a part of the moving path included in each error area, as a candidate position range corresponding to the error area. A position range restrictor determines a common area of the candidate position ranges, as a position range of the train.Type: GrantFiled: January 17, 2017Date of Patent: June 29, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomoaki Takewa, Wataru Tsujita, Masahiro Shikai, Tadashi Yamamoto, Masashi Asuka, Seiya Nagashima, Yoshitsugu Sawa
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Publication number: 20190031219Abstract: A moving path memory stores a moving path of a train in advance. A signal receiver receives satellite positioning signals. A position calculator calculates measured positions and receiver clock errors, based on the satellite positioning signals and the moving path. A error area calculator sets vector pairs, each consisting of arbitrary two vectors perpendicular to each other on a plane spanned by a tangent vector and a radial vector of a tangent circle of the moving path at the measured positions, and calculates an error area for each vector pair, based on the measured positions, the receiver clock errors, and positions of positioning satellites. A position range extractor extracts a part of the moving path included in each error area, as a candidate position range corresponding to the error area. A position range restrictor determines a common area of the candidate position ranges, as a position range of the train.Type: ApplicationFiled: January 17, 2017Publication date: January 31, 2019Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomoaki TAKEWA, Wataru TSUJITA, Masahiro SHIKAI, Tadashi YAMAMOTO, Masashi ASUKA, Seiya NAGASHIMA, Yoshitsugu SAWA
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Patent number: 9966753Abstract: An apparatus for predicting an operating time in a power device includes an operating characteristic parameter estimating unit, and only the operation historical data in the vicinity of a current operation environmental condition is extracted and input by a vicinity operation historical data extracting unit.Type: GrantFiled: February 2, 2011Date of Patent: May 8, 2018Assignee: Mitsubishi Electric CorporationInventors: Shoichi Kobayashi, Hiroyuki Tsutada, Masahiro Shikai, Tomohito Mori
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Patent number: 9488500Abstract: A reflector apparatus includes reflectors, which respectively radiate reflected waves in predetermined polarization directions. A polarized wave information reading circuit fixed to a moving body radiates a radio wave toward the reflecting apparatus from a transmitting antenna, receives reflected waves from the reflecting apparatus, and generates a received level difference signal that corresponds to a polarization direction of the received reflected waves. A position calculating circuit calculates a position of the polarized wave information reading circuit based on the received level difference signal.Type: GrantFiled: April 18, 2011Date of Patent: November 8, 2016Assignee: Mitsubishi Electric CorporationInventors: Wataru Tsujita, Kenji Inomata, Masahiro Watanabe, Masahiro Shikai
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Patent number: 9348012Abstract: In a vehicle inclination detecting device, a receiving unit includes a switching unit for alternately switching between a received signal from a first receiving antenna and a received signal from a second receiving antenna to alternately output the received signals to an orthogonal detector. The orthogonal detector carries out orthogonal detection on each of the two received signals from the switching unit and an oscillating signal from an oscillator by using an identical line.Type: GrantFiled: March 16, 2012Date of Patent: May 24, 2016Assignee: Mitsubishi Electric CorporationInventors: Masahiro Watanabe, Wataru Tsujita, Kenji Inomata, Takashi Ohsawa, Masahiro Shikai
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Publication number: 20140036265Abstract: A reflector apparatus includes reflectors, which respectively radiate reflected waves in predetermined polarization directions. A polarized wave information reading circuit fixed to a moving body radiates a radio wave toward the reflecting apparatus from a transmitting antenna, receives reflected waves from the reflecting apparatus, and generates a received level difference signal that corresponds to a polarization direction of the received reflected waves. A position calculating circuit calculates a position of the polarized wave information reading circuit based on the received level difference signal.Type: ApplicationFiled: April 18, 2011Publication date: February 6, 2014Applicant: Mitsubishi Electric CorporationInventors: Wataru Tsujita, Kenji Inomata, Masahiro Watanabe, Masahiro Shikai
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Publication number: 20130300609Abstract: In a vehicle inclination detecting device, a receiving unit includes a switching unit for alternately switching between a received signal from a first receiving antenna and a received signal from a second receiving antenna to alternately output the received signals to an orthogonal detector. The orthogonal detector carries out orthogonal detection on each of the two received signals from the switching unit and an oscillating signal from an oscillator by using an identical line.Type: ApplicationFiled: March 16, 2012Publication date: November 14, 2013Applicant: Mitsubishi Electric CorporationInventors: Masahiro Watanabe, Wataru Tsujita, Kenji Inomata, Takashi Ohsawa, Masahiro Shikai
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Publication number: 20130297255Abstract: An apparatus for predicting an operating time in a power device includes an operating characteristic parameter estimating unit, and only the operation historical data in the vicinity of a current operation environmental condition is extracted and input by a vicinity operation historical data extracting unit.Type: ApplicationFiled: February 2, 2011Publication date: November 7, 2013Applicant: Mitsubishi Electric CorporationInventors: Shoichi Kobayashi, Hiroyuki Tsutada, Masahiro Shikai, Tomohito Mori
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Patent number: 8115162Abstract: In a sliding door apparatus, a first entrance is opened and closed by a first door, and a second entrance that faces the first entrance is opened and closed by a second door. Imaging means that captures images across a space between the first entrance and the second entrance is disposed beside the space. An image processing and determining portion determines presence or absence of an obstruction inside the space based on image data from the imaging means.Type: GrantFiled: May 29, 2007Date of Patent: February 14, 2012Assignee: Mitsubishi Electric CorporationInventors: Masahiro Shikai, Akihide Shiratsuki, Kazuo Takashima, Hiroyuki Kawano, Takaharu Ueda, Toshio Masuda
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Patent number: 7614482Abstract: In an elevator apparatus, a pulley is provided in a hoistway. A rope that moves together with the movement of a car is wound around the pulley. Further, the pulley is provided with a pulley sensor for generating a signal according to the rotation of the pulley. The car is provided with a car speed sensor for directly detecting the speed of the car. A control panel is provided with: a first speed detecting portion for obtaining the speed of the car based on information from the pulley sensor; a second car speed detecting portion for obtaining the speed of the car based on information from the car speed sensor; and a determination portion for determining the presence/absence of slippage between the rope and the pulley by comparing the speeds of the car as respectively obtained by the first and second speed detecting portions.Type: GrantFiled: May 28, 2004Date of Patent: November 10, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Shikai, Akihide Shiratsuki, Tatsuo Matsuoka
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Patent number: 7588127Abstract: In an elevator apparatus, a guide rail has a plurality of unit rails that are vertically connected to each other. A car is provided with a rail joint detecting device mounted on the car, for detecting the presence/absence of a joint between each of the unit rails. The rail joint detecting device has a joint detecting portion for optically detecting the presence of the joint; and a joint determining portion for determining the presence/absence of the joint based on information from the joint detecting portion. Information on the presence/absence of the joint is outputted from the joint determining portion to a car position correcting circuit. In the car position correcting circuit, information on the position of the car is corrected based on the information on the presence/absence of the joint.Type: GrantFiled: May 28, 2004Date of Patent: September 15, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akihide Shiratsuki, Masahiro Shikai, Tatsuo Matsuoka
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Patent number: 7578373Abstract: In an elevator apparatus, a pulley is provided in a hoistway. A rope that moves together with the movement of a car is wound around the pulley. Further, the pulley is provided with a pulley sensor for generating a signal according to the rotation of the pulley. A rope sensor for measuring the movement speed of the rope is provided in the hoistway. A control panel is provided with: a first speed detecting portion for obtaining the speed of the car based on information from the pulley sensor; a second speed detecting portion for obtaining the speed of the car based on information from the rope sensor; and a determination portion for determining the presence/absence of slippage between the rope and the pulley by comparing the speeds of the car as respectively obtained by the first and second speed detecting portions.Type: GrantFiled: May 28, 2004Date of Patent: August 25, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akihide Shiratsuki, Masahiro Shikai, Tatsuo Matsuoka
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Patent number: 7577279Abstract: An identity verification apparatus includes a light source for applying light that can pass through an object to be detected and having a fingerprints to the object to be detected, an image pickup unit for picking up light emitted from the light source and passing through projections of the fingerprint and light emitted from the light source and passing through depressions of the fingerprint, and for generating a fingerprint image including dark portions corresponding to the projections and bright portions corresponding to the depressions, and a signal processing unit for image processing the fingerprint image generated by the image pickup unit to generate fingerprint information, and for verifying an identity based on the fingerprint information.Type: GrantFiled: March 8, 2004Date of Patent: August 18, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Emiko Sano, Akihide Shiratsuki, Masahiro Shikai, Hajime Nakajima
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Patent number: 7574023Abstract: A fingerprint image pickup device includes a light source that emits a light for transmission through a fingertip portion having a fingerprint to be photographed, an image pickup unit that picks up the light from the light source and transmitted through the subject to acquire a fingerprint image in which convex and concave parts of the fingerprint are dark and bright, respectively, and an optical system that images the light transmitted through the fingertip portion on the image pickup unit. The optical system is arranged so that a distal side of the fingertip portion is tilted, at a predetermined angle, farther away from the optical system than an opposite side, with reference to a position at which a ventral side of the fingertip portion contacts a face orthogonal to an optical axis of the optical system.Type: GrantFiled: September 30, 2005Date of Patent: August 11, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Emiko Sano, Masahiro Shikai, Akihide Shiratsuki, Toshiro Nakashima, Takahiro Nakamura
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Publication number: 20090108987Abstract: In a sliding door apparatus, a first entrance is opened and closed by a first door, and a second entrance that faces the first entrance is opened and closed by a second door. Imaging means that captures images across a space between the first entrance and the second entrance is disposed beside the space. An image processing and determining portion determines presence or absence of an obstruction inside the space based on image data from the imaging means.Type: ApplicationFiled: May 29, 2007Publication date: April 30, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masahiro Shikai, Akihide Shiratsuki, Kazuo Takashima, Hiroyuki Kawano, Takaharu Ueda, Toshio Masuda
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Publication number: 20080190710Abstract: In an elevator apparatus, a pulley is provided in a hoistway. A rope that moves together with the movement of a car is wound around the pulley. Further, the pulley is provided with a pulley sensor for generating a signal according to the rotation of the pulley. A rope sensor for measuring the movement speed of the rope is provided in the hoistway. A control panel is provided with: a first speed detecting portion for obtaining the speed of the car based on information from the pulley sensor; a second speed detecting portion for obtaining the speed of the car based on information from the rope sensor; and a determination portion for determining the presence/absence of slippage between the rope and the pulley by comparing the speeds of the car as respectively obtained by the first and second speed detecting portions.Type: ApplicationFiled: May 28, 2004Publication date: August 14, 2008Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Akihide Shiratsuki, Masahiro Shikai, Tatsuo Matsuoka
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Publication number: 20070062763Abstract: In an elevator apparatus, a guide rail has a plurality of unit rails that are vertically connected to each other. A car is provided with a rail joint detecting device mounted on the car, for detecting the presence/absence of a joint between each of the unit rails. The rail joint detecting device has a joint detecting portion for optically detecting the presence of the joint; and a joint determining portion for determining the presence/absence of the joint based on information from the joint detecting portion. Information on the presence/absence of the joint is outputted from the joint determining portion to a car position correcting circuit. In the car position correcting circuit, information on the position of the car is corrected based on the information on the presence/absence of the joint.Type: ApplicationFiled: May 28, 2004Publication date: March 22, 2007Inventors: Akihide Shiratsuki, Masahiro Shikai, Tatsuo Matsuoka
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Publication number: 20070000736Abstract: In an elevator apparatus, a pulley is provided in a hoistway. A rope that moves together with the movement of a car is wound around the pulley. Further, the pulley is provided with a pulley sensor for generating a signal according to the rotation of the pulley. The car is provided with a car speed sensor for directly detecting the speed of the car. A control panel is provided with: a first speed detecting portion for obtaining the speed of the car based on information from the pulley sensor; a second car speed detecting portion for obtaining the speed of the car based on information from the car speed sensor; and a determination portion for determining the presence/absence of slippage between the rope and the pulley by comparing the speeds of the car as respectively obtained by the first and second speed detecting portions.Type: ApplicationFiled: May 28, 2004Publication date: January 4, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Masahiro Shikai, Akihide Shiratsuki, Tatsuo Matsuoka
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Publication number: 20060072795Abstract: A fingerprint image pickup device includes a light source that emits light for transmission through a fingertip portion having a fingerprint to be photographed, an image pickup unit that picks up the light from the light source and transmitted through the fingertip portion and acquires a fingerprint image in which a convex part of the fingerprint is dark and a concave part of the fingerprint is bright, and an optical system that images the light transmitted through the fingertip portion from the light source on the image pickup unit. The light from the light source illuminates a portion other than a nail of the fingertip portion, and the light has a center of illumination on a center line, in a width direction of a face where the nail of the fingertip portions is present, and on a skin side of a border of the nail and skin of the fingertip portion.Type: ApplicationFiled: September 30, 2005Publication date: April 6, 2006Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Emiko Sano, Masahiro Shikai, Akihide Shiratsuki, Toshiro Nakashima
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Publication number: 20060072796Abstract: A fingerprint image pickup device includes a light source that emits a light for transmission through a fingertip portion having a fingerprint to be photographed, an image pickup unit that picks up the light from the light source and transmitted through the subject to acquire a fingerprint image in which convex and concave parts of the fingerprint are dark and bright, respectively, and an optical system that images the light transmitted through the fingertip portion on the image pickup unit. The optical system is arranged so that a distal side of the fingertip portion is tilted at a predetermined angle, farther away from the optical system thank an opposite sides with reference to a position at which a ventral side of the fingertip portion contacts a face orthogonal to an optical axis of the optical system.Type: ApplicationFiled: September 30, 2005Publication date: April 6, 2006Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Emiko Sano, Masahiro Shikai, Akihide Shiratsuki, Toshiro Nakashima, Takahiro Nakamura