Patents by Inventor Hiroshi Ohkata
Hiroshi Ohkata 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: 7761236Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: GrantFiled: September 30, 2008Date of Patent: July 20, 2010Assignee: DENSO CORPORATIONInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsume, Eiji Teramura
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Patent number: 7496449Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: GrantFiled: October 6, 2006Date of Patent: February 24, 2009Assignee: DENSO CORPORATIONInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsume, Eiji Teramura
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Publication number: 20090045999Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: ApplicationFiled: September 30, 2008Publication date: February 19, 2009Applicant: DENSO CORPORATIONInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsume, Eiji Teramura
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Publication number: 20070032953Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: ApplicationFiled: October 6, 2006Publication date: February 8, 2007Applicant: DENSO CORPORATIONInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsuma, Eiji Teramura
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Patent number: 7136753Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: GrantFiled: December 2, 2003Date of Patent: November 14, 2006Assignee: Denso CorporationInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsume, Eiji Teramura
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Patent number: 6927699Abstract: In an object recognition apparatus using a radar unit for a vehicle, in mounting the radar unit on the vehicle, a transmission wave is outputted throughout an appropriate angular range in a forward direction of the vehicle in a state where a margin is given to a tolerance of the mounting angle of the radar unit on the vehicle. Laser beams are radiated at a target placed at a predetermined positional relationship relative to the radar unit mounted on the vehicle to extract a laser beam which provides the maximum light-reception intensity in each of the X-axis and Y-axis directions. Moreover, a predetermined angular range is set in each of the X-axis and Y-axis directions so that the laser beam which provides the maximum light-reception intensity is centered therein, and the predetermined angular range is used as a recognition area.Type: GrantFiled: November 20, 2003Date of Patent: August 9, 2005Assignee: Denso CorporationInventors: Yoshie Samukawa, Keiji Matsuoka, Toyohito Nozawa, Hiroshi Ohkata
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Publication number: 20050093735Abstract: In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a non-vehicle, a plurality of transmission waves are emitted to receive a plurality of reflected waves from the reflecting objects, and a decision is made as to whether or not the reflecting object producing the plurality of reflected waves is a unitary reflecting object. If the decision shows a unitary reflecting object, the highest intensity of intensities of the reflected waves from the unitary reflecting object is compared with a reference intensity to makes a decision on whether the reflecting object is a vehicle or a non-vehicle. This enables univocally making a decision for each unitary reflecting object as to whether the reflecting object is more likely to be a vehicle or to be a non-vehicle, thus improving the recognition accuracy.Type: ApplicationFiled: December 2, 2003Publication date: May 5, 2005Inventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Keiji Matsuoka, Yoshiaki Hoashi, Tsutomu Natsume, Eiji Teramura
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Patent number: 6882303Abstract: An obstacle detection system includes a laser radar sensor that emits laser beams for scanning a two-dimensional detection area ahead of a vehicle and receives reflected beams in a form of reflecting dots representing the obstacle such as a preceding vehicle. To effectively detect a preceding vehicle traveling on a curved road, a reference angular direction in which the preceding vehicle is most probably located is set based on a traveling speed of the own vehicle and a calculated radius of the curved road. The reflecting dots are selected from those located closer to the reference angular direction until they reach a predetermined number, thereby forming a target model. The preceding vehicle is detected based on the target model.Type: GrantFiled: November 20, 2003Date of Patent: April 19, 2005Assignee: Denso CorporationInventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Tsutomu Natsume
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Publication number: 20040119634Abstract: An obstacle detection system includes a laser radar sensor that emits laser beams for scanning a two-dimensional detection area ahead of a vehicle and receives reflected beams in a form of reflecting dots representing the obstacle such as a preceding vehicle. To effectively detect a preceding vehicle traveling on a curved road, a reference angular direction in which the preceding vehicle is most probably located is set based on a traveling speed of the own vehicle and a calculated radius of the curved road. The reflecting dots are selected from those located closer to the reference angular direction until they reach a predetermined number, thereby forming a target model. The preceding vehicle is detected based on the target model.Type: ApplicationFiled: November 20, 2003Publication date: June 24, 2004Inventors: Yoshie Samukawa, Toyohito Nozawa, Hiroshi Ohkata, Tsutomu Natsume
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Publication number: 20040117090Abstract: In an object recognition apparatus using a radar unit for a vehicle, in mounting the radar unit on the vehicle, a transmission wave is outputted throughout an appropriate angular range in a forward direction of the vehicle in a state where a margin is given to a tolerance of the mounting angle of the radar unit on the vehicle. Laser beams are radiated at a target placed at a predetermined positional relationship relative to the radar unit mounted on the vehicle to extract a laser beam which provides the maximum light-reception intensity in each of the X-axis and Y-axis directions. Moreover, a predetermined angular range is set in each of the X-axis and Y-axis directions so that the laser beam which provides the maximum light-reception intensity is centered therein, and the predetermined angular range is used as a recognition area.Type: ApplicationFiled: November 20, 2003Publication date: June 17, 2004Inventors: Yoshie Samukawa, Keiji Matsuoka, Toyohito Nozawa, Hiroshi Ohkata