Patents by Inventor Yasushi Aoyagi

Yasushi Aoyagi 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).

  • Patent number: 10247819
    Abstract: A radar system includes a plurality of radar devices each having a transmitting unit that transmits a high frequency signal to an object, a receiving unit that receives a signal reflected from the object, an individual control unit that controls transmission and reception timings, and a converting unit that converts an output of the receiving unit into digital data, and a central processing device having an integration process unit that processes information transmitted from the radar devices in association with positional information of the radar devices, a command control unit that controls operation timings of the individual control units, and a detection process unit that performs a process for detecting the object on the digital data before being processed by the integration process unit. Digital communication isolated from the transmission and reception timing controls at the individual control unit is performed between the radar devices and the central processing device.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: April 2, 2019
    Assignees: FURUKAWA ELECTRIC CO., LTD, FURUKAWA AUTOMOTIVE SYSTEMS, INC.
    Inventors: Yasushi Aoyagi, Hiroki Hirayama, Hiroyasu Yano
  • Publication number: 20180259636
    Abstract: A monitoring device to monitor traffic behind and on both sides of a vehicle includes a radar detecting a traveling object in a pair of first detection areas that are defined behind and on left and right sides, respectively, of the vehicle and in a pair of second detection areas that are defined behind and on the left and right sides, respectively, of the vehicle, the second detection area having a width in a vehicle width direction narrower than a width of the first detection area; a detector detecting a moving direction in which the vehicle is moving and other moving indicators to find a moving status of the vehicle; and a processor causing the radar to switch to the second detection areas when the detected moving status indicates that the moving direction of the vehicle is straight ahead and at least one other moving indicator satisfies a prescribed condition.
    Type: Application
    Filed: May 9, 2018
    Publication date: September 13, 2018
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yasushi AOYAGI, Nobuyuki SHIMIZU
  • Publication number: 20180088223
    Abstract: [OBJECT] To surely remove a multi-order echo or interference from another radar apparatus [ORGANIZATION] A radar apparatus transmitting pulse signals at predetermined repetition cycles and receiving and analyzing the pulse signals reflected by a target object to thereby detect the target object has: a setting means (control unit 11) setting so that at least a part of the repetition cycles of the pulse signals is different; a detection means (speed detection/object detection unit 16) detecting a distance to the target object specified by the pulse signal; and a removal means (clutter removal unit 17) removing the target object as clutter when the distance to the target object detected in the different repetition cycle or in a period subsequent to the different repetition cycle by the detection means and the distance to the target object detected in the period other than that by the detection means are different.
    Type: Application
    Filed: February 24, 2016
    Publication date: March 29, 2018
    Inventors: Hiroyasu YANO, Yasushi AOYAGI, Kodai KUKITA
  • Publication number: 20180024234
    Abstract: The objective of the present invention is to use a simple circuit configuration and simple signal processing to provide a pulse radar device with which it is possible to reduce the impact of local signal carrier leakage on a received signal, and which makes it possible to perform high precision angle measurement using a multi-beam system. In order to measure the angle of an object, a pulse radar device is provided with at least two receiving antennas, and a reception circuit is provided with a signal selection switch for selectively switching between received signals received by the receiving antennas. The received signal contains a local signal leakage component, and a DC level of the received signal varies with the switching of the signal selection switch. In order to eliminate the impact of such DC level variations, a high-pass filter is disposed between a mixer and a frequency analyzer.
    Type: Application
    Filed: September 29, 2017
    Publication date: January 25, 2018
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yoshiyuki ISHIDA, Yasushi AOYAGI, Hiroyasu YANO
  • Patent number: 9628306
    Abstract: Provided is a pulse generation device capable of suitably adjusting and outputting a pulse pattern by a simple configuration. A pulse generation device (100) includes a radio frequency oscillator (110) that generates a carrier wave of a certain frequency, a baseband pulse generating unit (120) that generates a signal having a certain pulse shape at a baseband, a timing generator (130) that controls a timing to generate a pulse through the baseband pulse generating unit (120), and a mixer (140) that modulates the carrier wave output from the radio frequency oscillator (110) using the pulse output from the baseband pulse generating unit (120). The timing generator (130) can adjust a waveform of the pulse output from the baseband pulse generating unit (120).
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: April 18, 2017
    Assignees: FURUKAWA ELECTRIC CO., LTD, FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yoshihito Ishida, Yasushi Aoyagi, Kei Takahashi
  • Patent number: 9509534
    Abstract: Provided is a pulse generation device capable of suitably adjusting and outputting a pulse pattern by a simple configuration. A pulse generation device (100) includes a radio frequency oscillator (110) that generates a carrier wave of a certain frequency, a baseband pulse generating unit (120) that generates a signal having a certain pulse shape at a baseband, a timing generator (130) that controls a timing to generate a pulse through the baseband pulse generating unit (120), and a mixer (140) that modulates the carrier wave output from the radio frequency oscillator (110) using the pulse output from the baseband pulse generating unit (120). The timing generator (130) can adjust a waveform of the pulse output from the baseband pulse generating unit (120).
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: November 29, 2016
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yoshihito Ishida, Yasushi Aoyagi, Kei Takahashi
  • Patent number: 9459342
    Abstract: A radar device capable of reducing load of a clustering process and improving the tracking performance is provided. A tracking calculation unit 116 of a radar device 100 performs a clustering process, in which an input detected data set is grouped into clusters, and a tracking process, in which an averaged value and a prediction value are calculated for each of the clusters. In the radar device 100, the shape of cluster areas for grouping the detected data is defined to be a fan shape. The clustering process and tracking process using fan-shaped cluster areas can reduce the load of the clustering process and improve the tracking performance.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 4, 2016
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Hiroyuki Itohara, Yasushi Aoyagi
  • Publication number: 20160109568
    Abstract: A radar system includes a plurality of radar devices each having a transmitting unit that transmits a high frequency signal to an object, a receiving unit that receives a signal reflected from the object, an individual control unit that controls transmission and reception timings, and a converting unit that converts an output of the receiving unit into digital data, and a central processing device having an integration process unit that processes information transmitted from the radar devices in association with positional information of the radar devices, a command control unit that controls operation timings of the individual control units, and a detection process unit that performs a process for detecting the object on the digital data before being processed by the integration process unit. Digital communication isolated from the transmission and reception timing controls at the individual control unit is performed between the radar devices and the central processing device.
    Type: Application
    Filed: October 29, 2015
    Publication date: April 21, 2016
    Inventors: Yasushi Aoyagi, Hiroki Hirayama, Hiroyasu Yano
  • Publication number: 20160028566
    Abstract: Provided is a pulse generation device capable of suitably adjusting and outputting a pulse pattern by a simple configuration. A pulse generation device (100) includes a radio frequency oscillator (110) that generates a carrier wave of a certain frequency, a baseband pulse generating unit (120) that generates a signal having a certain pulse shape at a baseband, a timing generator (130) that controls a timing to generate a pulse through the baseband pulse generating unit (120), and a mixer (140) that modulates the carrier wave output from the radio frequency oscillator (110) using the pulse output from the baseband pulse generating unit (120). The timing generator (130) can adjust a waveform of the pulse output from the baseband pulse generating unit (120).
    Type: Application
    Filed: September 28, 2015
    Publication date: January 28, 2016
    Applicants: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Yoshihito ISHIDA, Yasushi AOYAGI, Kei TAKAHASHI
  • Patent number: 9223016
    Abstract: A pulse radar apparatus and a control method therefor are provided that can detect information about a target with a high degree of accuracy by allowing detection of target information at all times and updating a replica signal of a noise signal in order. When the number of sets of distance data n1 is determined to be more than the number of sets of all distance data Nr in step S5, it is determined that target information detection processing is finished, and replica signal generation processing is subsequently performed. The radar function is activated in steps S13, S15, S16, and the noise signal for each distance data is obtained in step S17. Thereafter, in steps S19, S21, S23, the first, second, and third background signals, respectively, are generated, and thereafter, in step S23, a replica signal is generated.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: December 29, 2015
    Assignees: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS INC.
    Inventors: Kazutaka Kamimura, Yasushi Aoyagi, Yoshihito Ishida
  • Patent number: 8897396
    Abstract: Provided is a pulse receiver capable of receiving a burst signal and decoding the burst signal with a bit error rate reduced to a target value or less by controlling a determination threshold such that decoding success rate is equal to or less than a predetermined value. A decode unit 140 decodes a pulse train 20 to information 30, counts the number of decoding successes for a predetermined time period and outputs the counted number (decoding success rate DR) to a control unit 150. The control unit 150 uses as a basis the decoding success rate DR communicated from the decode unit 140 to control the set value of reference voltage Vth used in the comparator 130.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: November 25, 2014
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Hiroyuki Itohara, Kazutaka Kamimura, Yasushi Aoyagi
  • Publication number: 20140022110
    Abstract: A radar device capable of reducing load of a clustering process and improving the tracking performance is provided. A tracking calculation unit 116 of a radar device 100 performs a clustering process, in which an input detected data set is grouped into clusters, and a tracking process, in which an averaged value and a prediction value are calculated for each of the clusters. In the radar device 100, the shape of cluster areas for grouping the detected data is defined to be a fan shape. The clustering process and tracking process using fan-shaped cluster areas can reduce the load of the clustering process and improve the tracking performance.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicants: Furukawa Automotive Systems Inc., Furukawa Electric Co., Ltd.
    Inventors: Hiroyuki ITOHARA, Yasushi Aoyagi
  • Publication number: 20140022114
    Abstract: A pulse radar apparatus and a control method therefor are provided that can detect information about a target with a high degree of accuracy by allowing detection of target information at all times and updating a replica signal of a noise signal in order. When the number of sets of distance data n1 is determined to be more than the number of sets of all distance data Nr in step S5, it is determined that target information detection processing is finished, and replica signal generation processing is subsequently performed. The radar function is activated in steps S13, S15, S16, and the noise signal for each distance data is obtained in step S17. Thereafter, in steps S19, S21, S23, the first, second, and third background signals, respectively, are generated, and thereafter, in step S23, a replica signal is generated.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 23, 2014
    Applicants: Furukawa Automotive Systems Inc., Furukawa Electric Co., Ltd.
    Inventors: Kazutaka KAMIMURA, Yasushi Aoyagi, Yoshihito Ishida
  • Patent number: 8559549
    Abstract: The burst oscillation device 20 includes the data generation part 21, the operation part 11, the signal selecting part 40 and the burst generation part 50. The generation part 21 outputs the encoded data encoded based on data for communication. At the signal selecting part 40, the pulse release timing of predetermined repetition period is randomly delayed by the PPM and further delayed randomly by the minimal time by means of the PSK modulation, thereby realizing the decreasing of the peak value of the average power spectral density.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 15, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Yasushi Aoyagi
  • Patent number: 8547273
    Abstract: The invention provides a pulse radar apparatus, and a control method thereof, that permits to readily downsize and to lower its cost and allows information on an object to be detected in high precision by removing an influence of noise when a gain of a variable gain amplifier is discontinuously changed corresponding to detected distance, with a simple configuration. A variable gain amplifier 135 configured to adjust a gain corresponding to a distance gate is used to be able to detect weak reflected wave from a distant object and to amplify a reflected wave from a short distance with a low gain. An offset noise from the variable gain amplifier 135 is prepared together with interference noise and self-mixing noise in advance as a replica signal of unwanted wave and the replica signal is removed from a baseband signal in detecting the object T.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 1, 2013
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
    Inventors: Yasushi Aoyagi, Kazutaka Kamimura, Yoshihito Ishida
  • Publication number: 20130002329
    Abstract: A delay control device that controls a relative delay time between two signals and is easy to be miniaturized is provided. Signal routes 111 to 114 and signal routes 121 to 124 in a first signal route part 110 and a second signal route part 120 have different delay times. By selecting any one of the four signal routes 111 to 114 in the first signal route part 110 and any one of the four signal routes 121 to 124 in the second signal route part 120, it is possible to finely change a relative delay time between two input pulse signals.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicants: FURUWAKA AUTOMOTIVE SYSTEMS, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Noritaka MUROFUSHI, Kazutaka Kamimura, Yasushi Aoyagi
  • Publication number: 20120326912
    Abstract: The invention provides a pulse radar apparatus, and a control method thereof, that permits to readily downsize and to lower its cost and allows information on an object to be detected in high precision by removing an influence of noise when a gain of a variable gain amplifier is discontinuously changed corresponding to detected distance, with a simple configuration. A variable gain amplifier 135 configured to adjust a gain corresponding to a distance gate is used to be able to detect weak reflected wave from a distant object and to amplify a reflected wave from a short distance with a low gain. An offset noise from the variable gain amplifier 135 is prepared together with interference noise and self-mixing noise in advance as a replica signal of unwanted wave and the replica signal is removed from a baseband signal in detecting the object T.
    Type: Application
    Filed: September 6, 2012
    Publication date: December 27, 2012
    Applicants: Furukawa Automotive Systems Inc., Furukawa Electric Co., Ltd.
    Inventors: Yasushi AOYAGI, Kazutaka KAMIMURA, Yoshihito ISHIDA
  • Publication number: 20120307940
    Abstract: Provided is a pulse receiver capable of receiving a burst signal and decoding the burst signal with a bit error rate reduced to a target value or less by controlling a determination threshold such that decoding success rate is equal to or less than a predetermined value. A decode unit 140 decodes a pulse train 20 to information 30, counts the number of decoding successes for a predetermined time period and outputs the counted number (decoding success rate DR) to a control unit 150. The control unit 150 uses as a basis the decoding success rate DR communicated from the decode unit 140 to control the set value of reference voltage Vth used in the comparator 130.
    Type: Application
    Filed: August 15, 2012
    Publication date: December 6, 2012
    Applicants: FURUKAWA AUTOMOTIVE SYSTEMS INC., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hiroyuki Itohara, Kazutaka Kamimura, Yasushi Aoyagi
  • Patent number: 8169359
    Abstract: A judging and controlling part 110 comprises an operation mode judging unit 111, a pulse width selecting unit 112, and a band limiting width selecting unit 113, wherein the operation mode judging unit 111 receives a signal of a gear state from a predetermined controlling device in a vehicle, and then judges the operation mode thereof. Based on a result of the judgment at the operation mode judging unit 111, the pulse width selecting unit 112 and the band limiting width selecting unit 113 control a wide band impulse generating part 120 and a band width limiting part 150, respectively.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: May 1, 2012
    Assignee: The Furukawa Electric Co., Ltd
    Inventor: Yasushi Aoyagi
  • Patent number: 7817080
    Abstract: A ranging and communication multifunction system including a transmission unit and a receiving unit, and integrates two functions of ranging and communication in which the transmission unit includes a transmission circuit, a carrier wave modification device, and a transmission antenna. The receiving unit includes a receiving circuit, a wave detector, a low noise amplifier, and a receiving antenna, and a data modulation performed in the transmission circuit uses a PPM system. Thus, the receiving circuit provides a ranging circuit and a communication separately, so that the demodulation processing of ranging and communication can be performed in parallel.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: October 19, 2010
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Yasushi Aoyagi, Kazutaka Kamimura