Patents by Inventor Koichi Kai

Koichi Kai 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).

  • Publication number: 20230152437
    Abstract: To provide a radar apparatus which can prevent occurrence of two or more of calculated values of the actual relative speeds by round of combination, and determine the actual relative speed uniquely, when calculating the actual relative speed without folding by combining the relative speeds detected by the frequency modulation signal of each kind among plural kinds. A radar apparatus (1) sets a speed width (?Vr) of the speed calculation range to less than a speed width that the actual relative speed can be calculated uniquely; and calculates an actual relative speed (Vr) which does not have folding due to a detection range of relative speed, within the speed calculation range.
    Type: Application
    Filed: May 25, 2020
    Publication date: May 18, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventor: Koichi KAI
  • Patent number: 10961643
    Abstract: Provided is a fabric for use as sportswear, the side fabric of a futon or the inner bag thereof that has superior heat retention and a soft texture despite being lightweight and thin. The fabric is a thin fabric having a fabric density of 15 g/m2 to 50 g/m2 in which thermoplastic synthetic fibers having fineness of 5 dtex to 30 dtex are arranged in at least a portion of the warp yarn or weft yarn, wherein the average deviation of the coefficient of friction on at least one side of the fabric is 0.008 to 0.05, and the value of Qmax of that one side of the fabric is 85 W/m2·° C. to 125 W/m2·° C.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: March 30, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Junko Deguchi, Koichi Kai
  • Patent number: 10486400
    Abstract: The purpose of the present invention is to provide a fabric provided with both excellent abrasion resistance and soft texture, and this fabric is a fabric having excellent abrasion resistance in which at least a portion of a warp or a weft yearn thereof comprises a polyamide fiber twisted yarn.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: November 26, 2019
    Assignee: ASAHI KASEI FIBERS CORPORATION
    Inventors: Koichi Kai, Satoko Sakata, Yuichiro Nozaki
  • Patent number: 10228457
    Abstract: In order to improve accuracy of kind identification of a detected object in a radar device provided in a sensor fusion system, information of the result of kind identification by a camera device provided in the sensor fusion system is given to the radar device and an attribution degree database that is used for identification determination by the radar device during the operation of the sensor fusion system is updated by a database update block.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 12, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Publication number: 20180014584
    Abstract: Provided is thin lightweight woven fabric which is suitable for use as covering fabric for down wear, down jackets, futons, sleeping bags, etc. and which, even when subjected to bias deformation, can retain low air permeability. The present invention relates to thin lightweight woven fabric constituted of synthetic fiber multifilaments, characterized in that in a cross section of the warp or weft constituting the woven fabric, the degree of overlapping between adjacent groups of monofilaments is 0.6 or greater for either the warp or the weft and that the woven fabric has a basis weight of 15-50 g/m2. The invention further relates to sports clothing, ticking, and inner-bag woven fabric which are each obtained using the thin lightweight woven fabric.
    Type: Application
    Filed: February 3, 2016
    Publication date: January 18, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koichi KAI, Mikiko KATO, Junko DEGUCHI
  • Publication number: 20170370031
    Abstract: Provided is a fabric for use as sportswear, the side fabric of a futon or the inner bag thereof that has superior heat retention and a soft texture despite being lightweight and thin. The fabric is a thin fabric having a fabric density of 15 g/m2 to 50 g/m2 in which thermoplastic synthetic fibers having fineness of 5 dtex to 30 dtex are arranged in at least a portion of the warp yarn or weft yarn, wherein the average deviation of the coefficient of friction on at least one side of the fabric is 0.008 to 0.05, and the value of Qmax of that one side of the fabric is 85 W/m2·° C. to 125 W/m2·° C.
    Type: Application
    Filed: December 25, 2015
    Publication date: December 28, 2017
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Junko DEGUCHI, Koichi KAI
  • Publication number: 20170336504
    Abstract: In order to improve accuracy of kind identification of a detected object in a radar device provided in a sensor fusion system, information of the result of kind identification by a camera device provided in the sensor fusion system is given to the radar device and an attribution degree database that is used for identification determination by the radar device during the operation of the sensor fusion system is updated by a database update block.
    Type: Application
    Filed: September 30, 2016
    Publication date: November 23, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventor: Koichi KAI
  • Publication number: 20160075116
    Abstract: The purpose of the present invention is to provide a fabric provided with both excellent abrasion resistance and soft texture, and this fabric is a fabric having excellent abrasion resistance in which at least a portion of a warp or a weft yearn thereof comprises a polyamide fiber twisted yarn.
    Type: Application
    Filed: May 14, 2014
    Publication date: March 17, 2016
    Inventors: Koichi KAI, Satoko SAKATA, Yuichiro NOZAKI
  • Patent number: 7884756
    Abstract: A radar apparatus measures an azimuth angle with a calculation device that performs super-resolution angle measuring processing in which relative speeds and relative distances among target objects are calculated, when two azimuth angles are obtained for a given target object that has been detected, the calculation device performs an other-signal detection processing in which, among other detected target objects, a target object is searched whose azimuth angle is the same as one of the two azimuth angles and whose beat frequency upon frequency-increasing modification or frequency-decreasing modification is the same as that of the given target object; and when, through the other-signal detection processing, another target object that satisfies the condition is detected, the calculation device eliminates one of two azimuth angles of the detected given target object, which is equal to the azimuth angle of said another target object detected through the other-signal detection processing.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: February 8, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Patent number: 7812759
    Abstract: A radar apparatus includes a DBF process portion for grouping reception signals over plural channels into plural groups and performing DBF on each group, a summing portion for summing amplitudes or power of frequency components obtained by the DBF performed by the DBF process portion on each group, a peak detecting portion for detecting a peak frequency of a signal of the electric wave reflected by a target from results of the summation at the summing portion, a distance/speed calculating portion for calculating the distance and speed of the target based on the peak frequency, and an angle calculating portion for extracting a frequency component of the peak frequency detected by the peak detecting portion to calculate the angle of the electric wave reflected by the target. Thus, the amount of DBF calculation can be reduced, and a highly accurate positional information of the target can be obtained.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: October 12, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Publication number: 20100085240
    Abstract: When super-resolution angle measuring processing is performed, due to intrusion of unnecessary other signals, an erroneous azimuth angle may be obtained.
    Type: Application
    Filed: February 25, 2009
    Publication date: April 8, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventor: Koichi KAI
  • Patent number: 7683824
    Abstract: A radar apparatus includes a sending unit for sending a transmission wave, a plurality of receiving parts for receiving a reflected wave from a reflecting object in a parallel manner, beat signal generation parts for acquiring beat signals at the receiving parts, respectively, from the transmission wave and the wave received at the receiving parts, a beat signal processing part for individually processing the beat signals of the receiving parts, a DBF processing part for DBF processing a beat signal processing result, and an object detection part for acquiring information on the reflecting object from frequency components of a DBF processing result or the beat signal processing result. Amounts of phase lag of the receiving parts are set to different values. The beat signal processing part includes a phase correction part that corrects the phase lag amounts corresponding to the individual receiving parts so as to make them equal to one another.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: March 23, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Patent number: 7642950
    Abstract: Provided is a radar device includes a transmitting unit, a receiving unit for receiving the electromagnetic wave reflected by a target object of the transmission electromagnetic wave, a target object measuring unit for measuring at least a distance between the radar device and the target object on the basis of the transmission and reception electromagnetic waves, a transmission output control unit (S1, S2) for stopping or reducing a transmission output of the transmitting unit under a predetermined condition, a transmission output control function abnormality determining unit (S3 to S6) for determining that the transmission output control unit is abnormal upon receiving the reception electromagnetic wave having an intensity exceeding a predetermined threshold value even at the time of one of stop and reduction of the transmission output, and an abnormality determination time processing unit (S7) for stopping a power supply of the radar device when an abnormality is determined.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: January 5, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Publication number: 20090322592
    Abstract: A radar apparatus includes a DBF process portion for grouping reception signals over plural channels into plural groups and performing DBF on each group, a summing portion for summing amplitudes or power of frequency components obtained by the DBF performed by the DBF process portion on each group, a peak detecting portion for detecting a peak frequency of a signal of the electric wave reflected by a target from results of the summation at the summing portion, a distance/speed calculating portion for calculating the distance and speed of the target based on the peak frequency, and an angle calculating portion for extracting a frequency component of the peak frequency detected by the peak detecting portion to calculate the angle of the electric wave reflected by the target. Thus, the amount of DBF calculation can be reduced, and a highly accurate positional information of the target can be obtained.
    Type: Application
    Filed: April 22, 2008
    Publication date: December 31, 2009
    Applicant: Mitsubishi Electric Corporation
    Inventor: Koichi Kai
  • Patent number: 7443335
    Abstract: To obtain a radar system capable of obtaining an appropriate angular precision by calculating an angle error based on distributions of relative speeds and angles of reflecting points, and of obtaining the appropriate angular precision including an axis deviation angle by simultaneously calculating the angle error and the axis deviation angle. A radar system mounted on a movable body is provided with a radar device that calculates relative speeds and azimuth angles of plural reflecting points; an azimuth angle error estimating device that estimates an error of the azimuth angle calculated by the radar device based on the relative speeds and the azimuth angles of the plural reflecting points; and a correcting device that corrects the azimuth angle calculated by the radar device by using the azimuth angle error estimated by the azimuth angle error estimating device.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: October 28, 2008
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koichi Kai, Atsushi Okamura, Rokuzou Hara
  • Publication number: 20080258962
    Abstract: A radar apparatus includes a sending unit for sending a transmission wave, a plurality of receiving parts for receiving a reflected wave from a reflecting object in a parallel manner, beat signal generation parts for acquiring beat signals at the receiving parts, respectively, from the transmission wave and the wave received at the receiving parts, a beat signal processing part for individually processing the beat signals of the receiving parts, a DBF processing part for DBF processing a beat signal processing result, and an object detection part for acquiring information on the reflecting object from frequency components of a DBF processing result or the beat signal processing result. Amounts of phase lag of the receiving parts are set to different-values. The beat signal processing part includes a phase correction part that corrects the phase lag amounts corresponding to the individual receiving parts so as to make them equal to one another.
    Type: Application
    Filed: September 17, 2007
    Publication date: October 23, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Koichi KAI
  • Publication number: 20080158046
    Abstract: Provided is a radar device includes a transmitting unit, a receiving unit for receiving the electromagnetic wave reflected by a target object of the transmission electromagnetic wave, a target object measuring unit for measuring at least a distance between the radar device and the target object on the basis of the transmission and reception electromagnetic waves, a transmission output control unit (S1, S2) for stopping or reducing a transmission output of the transmitting unit under a predetermined condition, a transmission output control function abnormality determining unit (S3 to S6) for determining that the transmission output control unit is abnormal upon receiving the reception electromagnetic wave having an intensity exceeding a predetermined threshold value even at the time of one of stop and reduction of the transmission output, and an abnormality determination time processing unit (S7) for stopping a power supply of the radar device when an abnormality is determined.
    Type: Application
    Filed: April 12, 2007
    Publication date: July 3, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Koichi Kai
  • Publication number: 20070115169
    Abstract: To obtain a radar system capable of obtaining an appropriate angular precision by calculating an angle error based on distributions of relative speeds and angles of reflecting points, and of obtaining the appropriate angular precision including an axis deviation angle by simultaneously calculating the angle error and the axis deviation angle. A radar system mounted on a movable body is provided with a radar device that calculates relative speeds and azimuth angles of plural reflecting points; an azimuth angle error estimating device that estimates an error of the azimuth angle calculated by the radar device based on the relative speeds and the azimuth angles of the plural reflecting points; and a correcting device that corrects the azimuth angle calculated by the radar device by using the azimuth angle error estimated by the azimuth angle error estimating device.
    Type: Application
    Filed: April 6, 2006
    Publication date: May 24, 2007
    Inventors: Koichi Kai, Atsushi Okamura, Rokuzou Hara
  • Patent number: 7164382
    Abstract: An on-vehicle radar system capable of detecting a range error from range data based on an echo from a target (6). Range error is detected when amplitudes of beat frequency components in two adjacent range gates are substantially equal. The system includes a transmitting unit (1, 2, 4, 5) for radiating a modulated wave having frequency increasing and decreasing repetitively after pulse modulation, a receiving unit (8, 9, 10, 11, 12) for receiving the echo, and an arithmetic unit (13) for detecting a range error ascribable to aberration of modulation band width due to frequency increase and decrease of transmission wave (W1) by comparing a range corresponding to the range gate with that determined from a frequency difference between transmission wave and echo. The arithmetic unit (13) detects the range error on the basis of frequency difference components having substantially same amplitudes in adjacent range gates.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: January 16, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Koichi Kai
  • Publication number: 20060170587
    Abstract: An on-vehicle radar system capable of detecting a range error from range data based on an echo from a target (6). Range error is detected when amplitudes of beat frequency components in two adjacent range gates are substantially equal. The system includes a transmitting unit (1, 2, 4, 5) for radiating a modulated wave having frequency increasing and decreasing repetitively after pulse modulation, a receiving unit (8, 9, 10, 11, 12) for receiving the echo, and an arithmetic unit (13) for detecting a range error ascribable to aberration of modulation band width due to frequency increase and decrease of transmission wave (W1) by comparing a range corresponding to the range gate with that determined from a frequency difference between transmission wave and echo. The arithmetic unit (13) detects the range error on the basis of frequency difference components having substantially same amplitudes in adjacent range gates.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 3, 2006
    Inventor: Koichi Kai