Patents by Inventor Yasushi Hamada
Yasushi Hamada 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: 9618615Abstract: A vehicle obstacle detection device comprises: a radar unit provided between a back surface of a bumper and a wheel and configured to detect an obstacle by transmitting a radio wave through the bumper; and a misdetection prevention member for preventing misdetection in the radar unit by suppressing the occurrence of an own-vehicle's wheel reaching wave which is a part of a transmission wave and which passes between a transmitter section of the radar unit and the back surface of the bumper and reaches the wheel of the own vehicle.Type: GrantFiled: April 6, 2012Date of Patent: April 11, 2017Assignee: MAZDA MOTOR CORPORATIONInventors: Takahiro Inada, Yasushi Hamada, Marie Tsurunaga, Youichiro Nakahata, Yoshitsugu Hanada, Fumihiko Nishida, Yasuyuki Endo
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Patent number: 9131383Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.Type: GrantFiled: July 1, 2013Date of Patent: September 8, 2015Assignee: NEC MAGNUS COMMUNICATIONS, LTD.Inventors: Yuusaku Okamura, Yasushi Hamada, Kazutoshi Ohishi
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Patent number: 9111176Abstract: Image matching device 300 of the invention includes feature image extracting sections 303, 304 extracting one or more partial object images containing a local structural feature from an object image and extracting one or more partial reference images containing the local structural feature from each reference image, first image detecting section 306 setting each of the partial object images as an image of interest and detecting a first partial image most similar to the image of interest from a set of partial reference images, second image detecting section 307 detecting a second partial image most similar to the first partial image from a set of partial object images, and determination processing section 305 determining whether or not the image of interest matches the second partial image and outputting the result of the determination.Type: GrantFiled: April 24, 2009Date of Patent: August 18, 2015Assignee: NEC CORPORATIONInventor: Yasushi Hamada
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Patent number: 8938132Abstract: An image collation system includes: a first direction estimating unit for estimating a first imaging direction of a reference object that matches an imaging direction of a collation target object by comparing global characteristics between an image of the collation target object and the three-dimensional data of the reference object; a second direction estimating unit for generating an image corresponding to the first imaging direction of the reference object, and estimating a second imaging direction of the reference object that matches the imaging direction of the collation target object by comparing local characteristics between the image of the collation target object and the generated image corresponding to the first imaging direction; and an image conformity determining unit for generating an image corresponding to the second imaging direction of the reference object, and determining whether the image of the collation target object matches the generated image corresponding to the second imaging directioType: GrantFiled: December 14, 2010Date of Patent: January 20, 2015Assignee: NEC CorporationInventor: Yasushi Hamada
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Patent number: 8914838Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in communication using a cable modem, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.Type: GrantFiled: July 10, 2013Date of Patent: December 16, 2014Assignee: NEC Magnus Communications, Ltd.Inventors: Yuusaku Okamura, Yasushi Hamada, Yoshitaka Nakano, Kazutoshi Ohishi
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Patent number: 8749658Abstract: A data processing device 300 according to the present invention comprises difference value computing means 402, 412 that computes a difference value between a pixel value of a target pixel that is each pixel contained in an image and a pixel value of a pixel that is present at a predetermined neighboring relative position of the target pixel, representative value computing means 403, 413 that extracts a pixel group containing pixels that are similarly influenced by shading due to light from the image with respect to each pixel of the image and computes a representative value of difference values of the pixel group according to a statistical technique, feature value computing means 404, 414 that computes the feature value with respect to each pixel contained in the image based on comparison between the difference value with respect to each pixel and the representative value of difference values of the pixel group, and similarity determining means 301 that determines a similarity between the image and a predeteType: GrantFiled: March 23, 2010Date of Patent: June 10, 2014Assignee: NEC CorporationInventor: Yasushi Hamada
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Publication number: 20140070982Abstract: A vehicle obstacle detection device comprises: a radar unit provided between a back surface of a bumper and a wheel and configured to detect an obstacle by transmitting a radio wave through the bumper; and a misdetection prevention member for preventing misdetection in the radar unit by suppressing the occurrence of an own-vehicle's wheel reaching wave which is a part of a transmission wave and which passes between a transmitter section of the radar unit and the back surface of the bumper and reaches the wheel of the own vehicle.Type: ApplicationFiled: April 6, 2012Publication date: March 13, 2014Applicant: MAZDA MOTOR CORPORATIONInventors: Takahiro Inada, Yasushi Hamada, Marie Tsurunaga, Youichiro Nakahata, Yoshitsugu Hanada, Fumihiko Nishida, Yasuyuki Endo
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Publication number: 20140033263Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in communication using a cable modem, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.Type: ApplicationFiled: July 10, 2013Publication date: January 30, 2014Inventors: Yuusaku OKAMURA, Yasushi HAMADA, Yoshitaka NAKANO, Kazutoshi OHISHI
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Publication number: 20140011457Abstract: A communication apparatus comprises a reception unit that receives a reception signal from a metal cable and extracts reception data; a transmission unit that sends a transmission signal obtained by modulating transmission data with a frequency included in a first frequency band to the metal cable; an interference signal detection unit that detects a signal used in wireless communication, modulated by a frequency included in a second frequency band, and transmitted over the metal cable as an interference signal; and a signal transmission control unit that instructs the transmission unit to modulate transmission data using a frequency included in a third frequency band that does not have any frequency band overlapping the second frequency band when the interference signal is detected and a frequency band overlapping both the first frequency band and the second frequency band exists.Type: ApplicationFiled: July 1, 2013Publication date: January 9, 2014Inventors: Yuusaku OKAMURA, Yasushi HAMADA, Kazutoshi OHISHI
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Publication number: 20120314904Abstract: An image collation system includes: a first direction estimating unit for estimating a first imaging direction of a reference object that matches an imaging direction of a collation target object by comparing global characteristics between an image of the collation target object and the three-dimensional data of the reference object; a second direction estimating unit for generating an image corresponding to the first imaging direction of the reference object, and estimating a second imaging direction of the reference object that matches the imaging direction of the collation target object by comparing local characteristics between the image of the collation target object and the generated image corresponding to the first imaging direction; and an image conformity determining unit for generating an image corresponding to the second imaging direction of the reference object, and determining whether the image of the collation target object matches the generated image corresponding to the second imaging directioType: ApplicationFiled: December 14, 2010Publication date: December 13, 2012Inventor: Yasushi Hamada
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Patent number: 8315441Abstract: To provide a masquerade detection system which can detect a masquerade using a photograph, a picture or the like, without using an additional device other than an image picking-up device. A masquerade detection method includes an image conversion step in which an image conversion from one flat plane to the other flat plane is carried out from a first image of an examining object picked up from a first angle into a second image of an examining object picked up from a second angle different from the first angle to generate a converted image, and a masquerade judging step in which the converted image and the second image are entirely or partially compared with each other and, if a compared result satisfies a predetermined condition, an attempt to do a masquerade is judged.Type: GrantFiled: June 17, 2008Date of Patent: November 20, 2012Assignee: NEC CorporationInventor: Yasushi Hamada
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Patent number: 8310338Abstract: A transmitting antenna to transmit a request signal in a vehicle compartment is disposed off the center line of the vehicle compartment in a vehicle width direction. The output strength of the request signal transmitted by the transmitting antenna is switched in such a manner that a receivable output range of the request signal by a portable device reaches one of both doors which is equipped with one of access switches which has been operated. Accordingly, it can be properly recognized whether the portable device is located inside the vehicle compartment or outside the vehicle compartment even if the transmitter to transmit the request signal in the vehicle compartment is disposed off the center line of the vehicle compartment in the vehicle width direction.Type: GrantFiled: November 25, 2008Date of Patent: November 13, 2012Assignee: Mazda Motor CorporationInventor: Yasushi Hamada
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Publication number: 20120026354Abstract: A data processing device 300 according to the present invention comprises difference value computing means 402, 412 that computes a difference value between a pixel value of a target pixel that is each pixel contained in an image and a pixel value of a pixel that is present at a predetermined neighboring relative position of the target pixel, representative value computing means 403, 413 that extracts a pixel group containing pixels that are similarly influenced by shading due to light from the image with respect to each pixel of the image and computes a representative value of difference values of the pixel group according to a statistical technique, feature value computing means 404, 414 that computes the feature value with respect to each pixel contained in the image based on comparison between the difference value with respect to each pixel and the representative value of difference values of the pixel group, and similarity determining means 301 that determines a similarity between the image and a predeteType: ApplicationFiled: March 23, 2010Publication date: February 2, 2012Inventor: Yasushi Hamada
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Patent number: 7893185Abstract: A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom. In the formula: R3 and R4 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom; and X represents any one of bonding groups represented by —O—, —S—, —SO—, —SO2—, —CO— and 9,9-fluorenylidene group. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.Type: GrantFiled: October 18, 2007Date of Patent: February 22, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Takaaki Hikosaka, Yasushi Hamada
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Patent number: 7888455Abstract: A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom. In the formula: R3 and R4 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom; and X represents any one of bonding groups represented by —O—, —S—, —SO—, —SO2—, —CO— and 9,9-fluorenylidene group. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.Type: GrantFiled: August 10, 2010Date of Patent: February 15, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Takaaki Hikosaka, Yasushi Hamada
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Publication number: 20110019921Abstract: Image matching device 300 of the invention includes feature image extracting sections 303, 304 extracting one or more partial object images containing a local structural feature from an object image and extracting one or more partial reference images containing the local structural feature from each reference image, first image detecting section 306 setting each of the partial object images as an image of interest and detecting a first partial image most similar to the image of interest from a set of partial reference images, second image detecting section 307 detecting a second partial image most similar to the first partial image from a set of partial object images, and determination processing section 305 determining whether or not the image of interest matches the second partial image and outputting the result of the determination.Type: ApplicationFiled: April 24, 2009Publication date: January 27, 2011Inventor: Yasushi Hamada
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Publication number: 20100324209Abstract: A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom. In the formula: R3 and R4 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom; and X represents any one of bonding groups represented by —O—, —S—, SO—, —SO2—, —CO— and 9,9-fluorenylidene group. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.Type: ApplicationFiled: August 10, 2010Publication date: December 23, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: Takaaki HIKOSAKA, Yasushi Hamada
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Publication number: 20100177939Abstract: To provide a masquerade detection system which can detect a masquerade using a photograph, a picture or the like, without using an additional device other than an image picking-up device. A masquerade detection method includes an image conversion step in which an image conversion from one flat plane to the other flat plane is carried out from a first image of an examining object picked up from a first angle into a second image of an examining object picked up from a second angle different from the first angle to generate a converted image, and a masquerade judging step in which the converted image and the second image are entirely or partially compared with each other and, if a compared result satisfies a predetermined condition, an attempt to do a masquerade is judged.Type: ApplicationFiled: June 17, 2008Publication date: July 15, 2010Inventor: Yasushi Hamada
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Publication number: 20100079243Abstract: An object of an exemplary embodiment of the present invention is to provide an authentication system which can perform highly convenient authentication while ensuring minimum required authentication accuracy. An authentication system of an exemplary embodiment of the present invention includes a first authentication device which acquires a first authentication level, a second authentication device which acquires a second authentication level, and an authentication verifying device which authenticates based on a comparison between a predetermined value and a sum of the first authentication level and the second authentication level.Type: ApplicationFiled: March 20, 2009Publication date: April 1, 2010Inventor: Yasushi Hamada
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Publication number: 20090326184Abstract: A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom. In the formula: R3 and R4 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom; and X represents any one of bonding groups represented by —O—, —S—, —SO—, —SO2—, —CO— and 9,9-fluorenylidene group. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.Type: ApplicationFiled: October 18, 2007Publication date: December 31, 2009Inventors: Takaaki Hikosaka, Yasushi Hamada