Patents by Inventor Takuya TAKAYAMA

Takuya TAKAYAMA 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: 20220120887
    Abstract: An in-vehicle sensor device has an active sensor, an odometry sensor and a processing part. The processing part calculates estimated detection values of a stationary object by using position information parameters, a mounting angle of the active sensor, and a detection error of the odometry sensor. The position information parameters specify a relative position relationship between the stationary object and the active sensor. The processing part updates the position information parameters, the mounting angle, and the detection error simultaneously on the basis of a difference between the estimated detection value which has been calculated, and the position values of the stationary object detected by the active sensor.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 21, 2022
    Inventor: Takuya TAKAYAMA
  • Publication number: 20220065987
    Abstract: An axial misalignment estimation apparatus estimates an axial misalignment angle of a radar apparatus mounted in a moving body. The estimation apparatus repeatedly acquires, for each reflection point detected by the radar apparatus, reflection point information including at least a relative speed and an orientation angle. The estimation apparatus acquires a speed of the moving body and extracts a stationary reflection point estimated to be a stationary object from the reflection points based on the speed of the moving body. The estimation apparatus selects, for each divided region, the stationary reflection point included in the divided region such that a predetermined condition is met. The divided region is a detection region of the radar apparatus that is divided into a plurality of parts in at least either of a horizontal direction and a vertical direction. The estimation apparatus determines the axial misalignment angle using the stationary reflection point selected.
    Type: Application
    Filed: November 12, 2021
    Publication date: March 3, 2022
    Inventors: Katsuhiko KONDO, Takuya TAKAYAMA
  • Publication number: 20220002829
    Abstract: Using an apparatus for manufacturing a thin steel sheet including the followings which are arranged in order: a continuous casting machine (1) for a thin slab having a slab thickness of 70 mm to 120 mm at a lower end of a mold; a holding furnace (2) that is configured to maintain a temperature of a cast slab (10) and/or heats the cast slab (10); and a rolling stand (3) by which finish rolling is performed, the casting speed of the thin slab is set to 4 to 7 m/min, the slab (10) is reduced at a rolling reduction of 30% or more by the reduction roll (4) after solidification is completed and when a center temperature of the slab is 1300° C. or higher, and the slab (10) is held at a temperature of 1150° C. or higher and 1300° C. or lower for five minutes or longer in the holding furnace (2).
    Type: Application
    Filed: November 8, 2019
    Publication date: January 6, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Takuya TAKAYAMA, Hiroshi HARADA, Kenji YAMADA, Masashi SAKAMOTO
  • Publication number: 20210405177
    Abstract: In an object tracking device, a candidate generator is configured to, given P=Kmax?Kmin+1 that defines a range of foldings of velocity by phase rotation from Kminth to Kmaxth foldings, calculate P velocity estimates for each of initial observation points. The candidate generator sets the number of foldings Kmin and the number of foldings Kmax such that Kmin<0 and |Kmin|>|Kmax| when an absolute value of an observation angle representing a direction of the observation point is equal to or less than a first threshold value, and Kmax>0 and |Kmin|<|Kmax| when the absolute value of the observation angle is greater than a second threshold. A velocity determiner is configured to, for each set of candidate targets, select one of the candidate targets belonging to the set of candidate targets, thereby determining the velocity of a target associated with the initial observation point.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Inventors: Yusuke AKAMINE, Takuya TAKAYAMA
  • Patent number: 11169252
    Abstract: A range setting unit sets, for each of tracked objects as objects being tracked, a connection range as a range in which the tracked object is estimated to be movable based on a state quantity of the tracked objects determined in the previous processing cycle. An association extraction unit extracts, for each of the tracked objects, a reflection point detected in the current processing cycle and positioned in the connection range as an associated reflection point. A state quantity update unit updates, for each of the tracked objects, the state quantity of the tracked objects in the current processing cycle, based on the previous state quantity and the state quantity of the associated reflection point.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 9, 2021
    Assignee: DENSO CORPORATION
    Inventor: Takuya Takayama
  • Patent number: 11131764
    Abstract: A transmission antenna section includes a plurality of transmission antennas, and a reception antenna section includes one or more reception antennas. A modulation section causes a continuous wave common signal generated by an oscillation section to be branched into the same number as the transmission antennas, and performs phase shift keying using a different phase rotation amount for each of the plurality of branch signals. Thus, the modulation section generates a plurality of transmission signals inputted into the plurality of transmission antennas. A processing section generates, on the basis of a plurality of signal components, information on an object by which a radiation wave from the transmission antenna section has been reflected, the plurality of signal components being extracted from each of one or more reception signals received by the antenna section and corresponding to the plurality of transmission signals.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 28, 2021
    Assignee: DENSO CORPORATION
    Inventor: Takuya Takayama
  • Patent number: 11119190
    Abstract: An acquiring unit acquires, for each of reflection points detected by a radar device, reflection point information including a horizontal angle, a vertical angle, and a relative speed. A converting unit converts each of the reflection points into three-dimensional coordinates. An extracting unit extracts stationary reflection points from the reflection points. An estimating unit uses a relational expression established among unknown parameters including a traveling direction vector and a moving speed of a moving body, three-dimensional coordinates of each of the stationary reflection points, and a relative speed of the stationary reflection point, to estimate the known parameters. A calculating unit determines an axial misalignment angle from the estimated unknown parameters.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: September 14, 2021
    Assignee: DENSO CORPORATION
    Inventors: Mitsutoshi Morinaga, Takuya Takayama, Chiharu Yamano
  • Publication number: 20210239825
    Abstract: An object tracking apparatus generates a plurality of target candidates in which ambiguity in velocity is assumed for an object detected for a first time, calculates a current prediction value of a state quantity of each target candidate from a past estimation value of the state quantity of each target candidate, using one filter among a plurality of filters, and calculates the current estimation value of the state quantity of the target candidate from each of the calculated prediction values and a current observation value that matches each prediction value. The object tracking apparatus deletes the target candidate of which a determined likelihood is less than a preset threshold among the target candidates, and switches a used filter to a filter that has a larger number of state variables among the filters, in response to the target candidate being deleted and the total number of target candidates decreasing.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 5, 2021
    Inventors: Yusuke AKAMINE, Takuya TAKAYAMA, Yasuyuki MIYAKE
  • Publication number: 20210220907
    Abstract: A continuous casting facility used for thin slab casting has a mold for casting molten steel, an immersion nozzle that supplies the molten steel into the mold, and an electromagnetic stirring device capable of providing a swirl flow at a molten steel surface in the mold, and a thickness DCu (mm) of a copper plate of a long side wall, a thickness T (mm) of a steel piece, a frequency f (Hz) of the electromagnetic stirring device, electric conductivity ? (S/m) of the molten steel, and electric conductivity ?Cu (S/m) of the copper plate of the long side wall are adjusted to satisfy the following formulae (1)-a and (1)-b: DCu<?(2/?Cu??)??(1)-a ?(1/2???)<T??(1)-b, where ?=2?f: angular velocity (rad/sec), and ?=4?×10?7: magnetic permeability in vacuum (N/A2).
    Type: Application
    Filed: June 7, 2019
    Publication date: July 22, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hiroshi HARADA, Kanoko YAMAMOTO, Takuya TAKAYAMA, Keita IKEDA, Yui ITO
  • Publication number: 20210205877
    Abstract: The device for controlling a flow in a mold in thin-slab casting of steel has a thickness on the short side of the meniscus portion of 150 mm or less and a casting width of 2 m or less and includes a DC magnetic field generation unit and an immersion nozzle having a slit formed at the bottom so that the slit leads to the bottom of the discharge hole and opens outside, the discharge hole and the slit are present in the DC magnetic field zone, and the magnetic flux density B (T) in the DC magnetic field zone and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy Formulae (1) and (2) described below: 0.35T?B?1.0T??Formula (1) L?0.
    Type: Application
    Filed: June 7, 2019
    Publication date: July 8, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Hiroshi HARADA, Keita IKEDA, Masashi SAKAMOTO, Yui ITO, Takuya TAKAYAMA
  • Publication number: 20210088644
    Abstract: The position detecting apparatus repeatedly acquires, from a radar apparatus, object information including at least an object distance as a distance between the radar apparatus and a reflecting object and a relative speed between the radar apparatus and a reflecting object. The position detecting apparatus calculates a speed ratio as a ratio between the relative speed and the travelling speed. The position detecting apparatus calculates, based on the speed ratio, a projection distance between a projected position of the reflecting object projected onto a projection plane and a position of the radar apparatus on the projection plane, the projection plane having a predetermined angle with respect to a center axis indicating a direction along which the radar waves are transmitted by the radar apparatus and including the radar apparatus. The position detection apparatus calculates the position of the reflecting object based on the calculated projection distance.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventors: Katsuhiko KONDO, Takuya TAKAYAMA
  • Publication number: 20210055401
    Abstract: A radar apparatus is provided with a data calculation unit, a first threshold calculation unit, a second threshold calculation unit, a detection threshold calculation unit and a peak detecting unit. The data calculation unit performs a frequency analysis of the reception signal to produce complex data. The first threshold calculating unit adds a predetermined addition value to a power value of the average data where the complex data is averaged to calculate a first threshold. The second threshold calculation unit calculates a second threshold based on a noise power. The detection threshold calculation unit calculates, for each frequency bin, a larger value of the first threshold and the second threshold to be the detection threshold.
    Type: Application
    Filed: November 9, 2020
    Publication date: February 25, 2021
    Inventor: Takuya TAKAYAMA
  • Patent number: 10871557
    Abstract: A velocity detection apparatus includes a velocity detection section, a candidate detection section, a range setting section, and a selection section. The range setting section sets an observation range of the relative velocity with respect to a range which corresponds to the vehicle velocity detected by the velocity detection section and is less than twice a Nyquist velocity corresponding to a repetition period of the pulses. The selection section selects, as the relative velocity, a candidate which falls within the observation range set by the range setting section out of candidates for the relative velocity detected by the candidate detection section.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: December 22, 2020
    Assignee: DENSO CORPORATION
    Inventor: Takuya Takayama
  • Publication number: 20200355788
    Abstract: A transmission antenna unit includes transmission antennas arranged in a row along a predetermined array direction at a predetermined first interval. A reception antenna unit includes reception antennas arranged in a row along the array direction at a second interval set to differ from the first interval. The transmission antennas and the reception antennas form a virtual array in which virtual reception antennas are arranged in a row along the array direction. The first interval is equal to a multiplication value of a minimum interval being a minimum value of an arrangement interval of the virtual reception antennas and a first multiple being an integer of 2 or greater. The second interval is equal to a multiplication value of the minimum interval and a second multiple being an integer of 2 or greater and set to differ from the first multiple. The first and second multiples are coprime.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 12, 2020
    Inventors: Takayuki KITAMURA, Takuya TAKAYAMA, Kazuhiro AOKI
  • Publication number: 20200209380
    Abstract: A transmission antenna section includes a plurality of transmission antennas, and a reception antenna section includes one or more reception antennas. A modulation section causes a continuous wave common signal generated by an oscillation section to be branched into the same number as the transmission antennas, and performs phase shift keying using a different phase rotation amount for each of the plurality of branch signals. Thus, the modulation section generates a plurality of transmission signals inputted into the plurality of transmission antennas. A processing section generates, on the basis of a plurality of signal components, information on an object by which a radiation wave from the transmission antenna section has been reflected, the plurality of signal components being extracted from each of one or more reception signals received by the antenna section and corresponding to the plurality of transmission signals.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Inventor: Takuya TAKAYAMA
  • Publication number: 20200031352
    Abstract: In an apparatus for assisting driving a vehicle, an error calculation unit calculates errors in first information representing a driving state of the vehicle based on the first information and second information including at least one of surroundings information and external location information of the vehicle. An error correction unit corrects for the errors in the first information. If error correction performed by the error correction unit is completed, a location estimation unit estimates a location of the vehicle based on the first information corrected for the errors. A driving assistance unit performs driving assistance for the vehicle based on the location of the vehicle estimated by the location estimation unit. If error correction performed by the error correction unit is completed, a process change unit changes a process of a specific type of driving assistance performed by the driving assistance unit.
    Type: Application
    Filed: July 29, 2019
    Publication date: January 30, 2020
    Inventors: Ryo TAKAKI, Takuya TAKAYAMA
  • Patent number: 10473774
    Abstract: A radar device includes a transmission part that transmits a radar wave which has been frequency-modulated such that one measurement cycle has a rising section in which a frequency increases and a falling section in which a frequency decreases, a reception part that derives respective beat signals of the rising section and the falling section, and a signal processor that performs a precipitation determining process on the basis of an analysis of the beat signals. In the precipitation determining process, in the absence of objects other than precipitation objects from a transmission range of the radar wave, it is determined whether a spectral similarity of the frequency spectra of the rising and falling section with precipitation reference spectra is not less than a threshold, and if the spectral similarity is not less than the threshold as a result of the determination, it is determined that precipitation is present.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: November 12, 2019
    Assignee: DENSO CORPORATION
    Inventors: Takuya Takayama, Koji Shimizu
  • Publication number: 20190219673
    Abstract: An acquiring unit acquires, for each of reflection points detected by a radar device, reflection point information including a horizontal angle, a vertical angle, and a relative speed. A converting unit converts each of the reflection points into three-dimensional coordinates. An extracting unit extracts stationary reflection points from the reflection points. An estimating unit uses a relational expression established among unknown parameters including a traveling direction vector and a moving speed of a moving body, three-dimensional coordinates of each of the stationary reflection points, and a relative speed of the stationary reflection point, to estimate the known parameters. A calculating unit determines an axial misalignment angle from the estimated unknown parameters.
    Type: Application
    Filed: September 25, 2017
    Publication date: July 18, 2019
    Inventors: Mitsutoshi MORINAGA, Takuya TAKAYAMA, Chiharu YAMANO
  • Publication number: 20190179002
    Abstract: A range setting unit sets, for each of tracked objects as objects being tracked, a connection range as a range in which the tracked object is estimated to be movable based on a state quantity of the tracked objects determined in the previous processing cycle. An association extraction unit extracts, for each of the tracked objects, a reflection point detected in the current processing cycle and positioned in the connection range as an associated reflection point. A state quantity update unit updates, for each of the tracked objects, the state quantity of the tracked objects in the current processing cycle, based on the previous state quantity and the state quantity of the associated reflection point.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 13, 2019
    Inventor: Takuya TAKAYAMA
  • Publication number: 20190120953
    Abstract: A velocity detection apparatus includes a velocity detection section, a candidate detection section, a range setting section, and a selection section. The range setting section sets an observation range of the relative velocity with respect to a range which corresponds to the vehicle velocity detected by the velocity detection section and is less than twice a Nyquist velocity corresponding to a repetition period of the pulses. The selection section selects, as the relative velocity, a candidate which falls within the observation range set by the range setting section out of candidates for the relative velocity detected by the candidate detection section.
    Type: Application
    Filed: May 18, 2017
    Publication date: April 25, 2019
    Inventor: Takuya TAKAYAMA