Patents by Inventor Haruki Okazaki
Haruki Okazaki 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: 11180153Abstract: A parking support device of the present invention, which is configured to move a vehicle in a longitudinal direction and stop the vehicle in a specified space by using a communication terminal to send a control signal to the vehicle, comprises a step detection part which is configured to detect presence/absence of a step in a moving direction of the vehicle, a moving stop part which is configured to stop moving of the vehicle in a case where presence of the step is detected by the step detection part, and a moving restart part which is configured to restart the moving of the vehicle so as to ride over the step in a case where the control signal from the communication terminal is received after the moving of the vehicle is stopped by the moving stop part.Type: GrantFiled: August 19, 2019Date of Patent: November 23, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Akihiro Miyahara, Haruki Okazaki
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Publication number: 20200130698Abstract: A parking support device of the present invention, which is configured to move a vehicle in a longitudinal direction and stop the vehicle in a specified space by using a communication terminal to send a control signal to the vehicle, comprises a step detection part which is configured to detect presence/absence of a step in a moving direction of the vehicle, a moving stop part which is configured to stop moving of the vehicle in a case where presence of the step is detected by the step detection part, and a moving restart part which is configured to restart the moving of the vehicle so as to ride over the step in a case where the control signal from the communication terminal is received after the moving of the vehicle is stopped by the moving stop part.Type: ApplicationFiled: August 19, 2019Publication date: April 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Akihiro MIYAHARA, Haruki OKAZAKI
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Patent number: 9134409Abstract: A vehicle-mounted radar apparatus for transmitting radar waves in a forward traveling direction of a vehicle mounting the apparatus thereon (radar-mounting vehicle) and receiving the radar waves reflected from an object to acquire information about the object. In the apparatus, a target detection unit transmits and receives the radar waves to detect positions of targets. A representative target selection unit selects a representative target from the targets detected by the target detection unit. A same-object target selection unit selects targets belonging to the same object as the representative target. An object position determination unit calculates a value of a predefined function of lateral positions of two or more targets of all the targets selected by the same-object target selection unit as a lateral position, along a vehicle-width direction of the radar-mounting vehicle, of the specific reflecting object.Type: GrantFiled: February 11, 2013Date of Patent: September 15, 2015Assignees: DENSO CORPORATION, Mazda Motor CorporationInventors: Akiyoshi Mizutani, Keiji Matsuoka, Koji Shimizu, Haruki Okazaki
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Patent number: 9073548Abstract: A vehicle-mounted radar apparatus for transmitting radar waves toward the outside of a vehicle mounting the apparatus thereon and receiving the radar waves reflected from an object to thereby acquire information about the object. In the apparatus, a target detection unit transmits and receives the radar waves to detect positions of targets. An object position determination unit determines a position of the object reflecting the radar waves on the basis of the positions of the targets. A representative target selection unit selects a representative target from the targets. A same-object target selection unit selects targets belonging to the same object as the representative target. A large-vehicle determination unit determines whether or not the object is a large vehicle on the basis of a number of targets selected by the same-object target selection unit and reflection wave received powers for the respective targets.Type: GrantFiled: February 12, 2013Date of Patent: July 7, 2015Assignees: DENSO CORPORATION, Mazda Motor CorporationInventors: Akiyoshi Mizutani, Keiji Matsuoka, Koji Shimizu, Haruki Okazaki
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Patent number: 8976058Abstract: A vehicle-mounted radar apparatus for transmitting radar waves toward the outside of a vehicle mounting the apparatus thereon and receiving the radar waves reflected from an object to thereby acquire information about the object. In the apparatus, a target detection unit transmits and receives the radar waves to detect positions of targets. An object position determination unit determines a position of the object reflecting the radar waves on the basis of the positions of the targets. A representative target selection unit selects a representative target from the targets detected by the target detection unit. A same-object target selection unit selects targets belonging to the same object as the representative target. A large-vehicle determination unit determines whether or not an extent of the targets selected by the same-object target selection unit is equal to or greater than a predetermined threshold value for large-vehicle determination.Type: GrantFiled: February 11, 2013Date of Patent: March 10, 2015Assignees: Denso Corporation, Mazda Motor CorporationInventors: Akiyoshi Mizutani, Keiji Matsuoka, Koji Shimizu, Haruki Okazaki
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Patent number: 7835865Abstract: An offset distance of an obstacle from a traveling-path center line of a vehicle at the time the obstacle is detected is calculated, and then this offset distance of the obstacle from the traveling-path center line of the vehicle is corrected based on a turning radius of the traveling vehicle detected at the time a specified period of time has lapsed. Thereby, even in a case where the vehicle travels on a road with a curve that changes a radius of curvature of the traveling-path center line (turning radius of the traveling vehicle) quickly during the specified period of traveling time, the above-described offset distance can be properly corrected based on an updated turning radius of the traveling vehicle. Thus, a relative position of the obstacle with respect to the vehicle can be predicted accurately.Type: GrantFiled: April 2, 2007Date of Patent: November 16, 2010Assignee: Mazda Motor CorporationInventors: Haruki Okazaki, Hiroshi Ohmura, Takayuki Seto, Takashi Nakagami
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Patent number: 7652560Abstract: A radar device is configured to transmit an electric wave and receives a reflected wave that is generated by a reflection of the electric wave on an object, and to recognize the object is a potential obstacle that is to be hit by the vehicle when a received intensity of the reflected wave thereby is a specified threshold or more. And, the specified threshold has a plurality of preset values. Accordingly, a determination as to whether or not the obstacle detected by the radar device is the potential obstacle to be hit by the vehicle can be accurately made.Type: GrantFiled: April 2, 2007Date of Patent: January 26, 2010Assignee: Mazda Motor CorporationInventors: Hiroshi Ohmura, Haruki Okazaki, Takuji Oka, Takashi Nakagami, Sei Kobayashi, Masanobu Fukushima, Takashi Terano
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Patent number: 7564343Abstract: A millimeter-wave radar (obstacle detecting device) detects an obstacle in front of a traveling vehicle. A driving-state detecting device detects a specified driving state of the vehicle. An operation-timing changing device changes an operation timing of operational devices according to detection results of the driving-state detecting device. A control unit (operation control device) operates the operational devices (warning device, brake device, seatbelt pre-tensioner) at the above operation timing. Thus, the safe and smooth vehicle driving can be attained without an improper detection of the obstacle.Type: GrantFiled: October 12, 2006Date of Patent: July 21, 2009Assignee: Mazda Motor CorporationInventors: Hiroshi Ohmura, Haruki Okazaki, Yasunori Yamamoto, Masanobu Fukushima
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Publication number: 20080079629Abstract: There are provided a radar device that transmits a frequency modulation-continuous wave (FM-CW) and outputs an up-beat frequency and a down-beat frequency, a pairing processing section that conducts pairing of the up-beat frequency and the down-beat frequency at specified sampling intervals, a target-object detecting section that detects target objects around the vehicle, obtaining a distance from the vehicle to the target object and a relative speed between the vehicle and the target object based on the up-beat frequency and down-beat frequency that are paired, and a prediction processing section that obtains a prediction data for each target object for a next sampling timing. The pairing processing section conducts the pairing with priority to a specified target object that has a high certainty of the prediction data. Thereby, the pairing of the up-beat and down-beat frequencies can be conducted precisely and quickly.Type: ApplicationFiled: August 27, 2007Publication date: April 3, 2008Inventors: Takuji Oka, Hiroshi Ohmura, Haruki Okazaki, Sei Kobayashi, Takashi Nakagami, Takayuki Seto
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Publication number: 20070241870Abstract: A radar device is configured to transmit an electric wave and receives a reflected wave that is generated by a reflection of the electric wave on an object, and to recognize the object is a potential obstacle that is to be hit by the vehicle when a received intensity of the reflected wave thereby is a specified threshold or more. And, the specified threshold has a plurality of preset values. Accordingly, a determination as to whether or not the obstacle detected by the radar device is the potential obstacle to be hit by the vehicle can be accurately made.Type: ApplicationFiled: April 2, 2007Publication date: October 18, 2007Inventors: Hiroshi Ohmura, Haruki Okazaki, Takuji Oka, Takashi Nakagami, Sei Kobayashi, Masanobu Fukushima, Takashi Terano
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Publication number: 20070239358Abstract: An offset distance of an obstacle from a traveling-path center line of a vehicle at the time the obstacle is detected is calculated, and then this offset distance of the obstacle from the traveling-path center line of the vehicle is corrected based on a turning radius of the traveling vehicle detected at the time a specified period of time has lapsed. Thereby, even in a case where the vehicle travels on a road with a curve that changes a radius of curvature of the traveling-path center line (turning radius of the traveling vehicle) quickly during the specified period of traveling time, the above-described offset distance can be properly corrected based on an updated turning radius of the traveling vehicle. Thus, a relative position of the obstacle with respect to the vehicle can be predicted accurately.Type: ApplicationFiled: April 2, 2007Publication date: October 11, 2007Inventors: Haruki Okazaki, Hiroshi Ohmura, Takayuki Seto, Takashi Nakagami
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Publication number: 20070109110Abstract: A millimeter-wave radar (obstacle detecting device) detects an obstacle in front of a traveling vehicle. A driving-state detecting device detects a specified driving state of the vehicle. An operation-timing changing device changes an operation timing of operational devices according to detection results of the driving-state detecting device. A control unit (operation control device) operates the operational devices (warning device, brake device, seatbelt pre-tensioner) at the above operation timing. Thus, the safe and smooth vehicle driving can be attained without an improper detection of the obstacle.Type: ApplicationFiled: October 12, 2006Publication date: May 17, 2007Applicant: MAZDA MOTOR CORPORATIONInventors: Hiroshi Ohmura, Haruki Okazaki, Yasunori Yamamoto, Masanobu Fukushima
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Patent number: 6226587Abstract: An automotive vehicle stability control system determined which is a main cause of a change in a change rate of a yaw rate difference of an actual yaw rate from a target yaw rate between a change in the actual yaw rate and a change in the target yaw rate when the change rate of the yaw rate difference exceeds a specified change rate, increase threshold slip angle for starting braking control based on slip angle following the driver's intention when the main cause is the change in the actual yaw rate and increases an upper limit of target slip angle so as to allow the target slip angle to be increased according to a driver's steering operation when the slip angle preferential braking control takes place.Type: GrantFiled: July 10, 1998Date of Patent: May 1, 2001Assignee: Mazda Motor CorporationInventors: Tetsuya Tachihata, Haruki Okazaki, Tomoji Izumi, Toshiaki Tsuyama
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Patent number: 6053583Abstract: A system of driving stability control, which is adapted to control valves for opening and closing hydraulic pressure passages between a master cylinder and brake units of wheels and simultaneously controls pressurizing valves and a pressure relief valves so as to supply braking force selectively and independently to the brake units when a specified driving condition is detected, performs the coordinated braking control that, when a specified step-on pressure is detected during execution of the driving stability control, delivers the braking pressure to the brake units according to brake pedal travels as the driving intends simultaneously with reducing the participative degree of the driving stability control so as to ensure gripping force of wheels that brake the vehicle and reduces reduce the participative degree of the driving stability control with an intention of regarding driving stability of the vehicle as important when the vehicle is going to cause a spin.Type: GrantFiled: March 27, 1998Date of Patent: April 25, 2000Assignee: Mazda Motor CorporationInventors: Tomoji Izumi, Haruki Okazaki, Toshiaki Tsuyama, Tetsuya Tachihata
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Patent number: 5934770Abstract: An automobile brake control system, which applies braking force commonly to both driving wheels and restrictively controls the braking force when a specified difference occurs between a wheel speed of the driving wheel and a vehicle speed estimated based on wheel speeds of the front and rear wheels, controls, when the vehicle is traversing a split surface road, the braking force based on a wheel speed of a specific one of the driving wheels which is suffering a road surface frictional coefficient greater than another driving wheel, and corrects the vehicle speed to a lower speed according to a difference in road surface friction coefficients at the driving wheels.Type: GrantFiled: September 27, 1996Date of Patent: August 10, 1999Assignee: Mazda Motor CorporationInventor: Haruki Okazaki
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Patent number: 5713642Abstract: An antiskid braking system for controlling hydraulic braking pressure to alleviate a lock of wheels so as thereby to control a skid of the wheel and alters the hydraulic braking pressure by repeating at least a pressure reducing phase and a pressure increasing phase so as to render the wheels loose to be locked more for a leading period of time from a commencement of antiskid braking control than for a succeeding period of time of antiskid braking control, or otherwise, if the control of hydraulic braking pressure for the gradual alleviation of the wheel lock is performed in consecutive cycles, in the first cycle of antiskid braking control than in any other remaining cycle.Type: GrantFiled: July 7, 1995Date of Patent: February 3, 1998Assignee: Mazda Motor CorporationInventor: Haruki Okazaki
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Patent number: 5651593Abstract: A control device for an automotive vehicle comprises a differential disposed between wheels or wheel axles of a vehicle an antiskid brake control device to control an antiskid brake device which is capable of adjusting a brake pressure applied to a brake device of the vehicle to prevent wheels of the vehicle from locking, a differential limiting control device having a differential limiting device being capable of controlling and transferring a differential limit to the differential, and operating to decrease the differential limit while the antiskid brake device is operating, such that when either the antiskid brake control device or said differential control device fails, the non-failing control device receives a failure signal from the failing control device and the non-failing control device controls the vehicle towards a stable condition or increases a brake force.Type: GrantFiled: September 6, 1995Date of Patent: July 29, 1997Inventors: Yuji Shitani, Haruki Okazaki, Seiji Miyamoto
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Patent number: 5615932Abstract: An antiskid braking system performs antiskid braking control, by periodically increasing and reducing hydraulic braking pressure according to a wheel speed so as to control a vehicle going into a skid, at a control gain greater in a low speed range of vehicle speeds less than a specified speed when a vehicle speed at a time of commencement of braking is low than when the vehicle speed at the time is high.Type: GrantFiled: July 25, 1995Date of Patent: April 1, 1997Assignee: Mazda Motor CorporationInventor: Haruki Okazaki
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Patent number: 5584541Abstract: A slip control system for a motor vehicle controls slippage of driving wheels and includes a sensor for detecting a slip ratio of each driving wheel, a device for decreasing slip of each driving wheel by controlling a driving force transmitted to the driving wheel so that the slip ratio of the driving wheel is at least equal to a predetermined desired slip ratio when the slip ratio of the driving wheel is equal to the desired slip ratio, a sensor for detecting a yawing rate of the vehicle, and a sensor for detecting a steering amount of the vehicle. The slip decreasing device includes a correcting device for decreasing the desired slip ratio when a steering condition is detected based on amounts detected by both the yawing rate detecting sensor and the steering amount detecting sensor.Type: GrantFiled: November 3, 1994Date of Patent: December 17, 1996Assignee: Mazda Motor CorporationInventors: Akira Sone, Toshiaki Tsuyama, Kazutoshi Nobumoto, Fumio Kageyama, Haruki Okazaki, Makoto Kawamura
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Patent number: 5518307Abstract: An anti-skid control system of a vehicle includes a wheel speed sensor for sensing a wheel rotation speed, a hydraulic pressure adjusting device for adjusting a brake pressure of hydraulic fluid of the control system, and an anti-skid brake controller for controlling the hydraulic pressure adjusting device based on the wheel rotation speed detected. The brake pressure is cyclically changed in accordance with a control cycle including at least a pressure reduction phase in which the brake pressure is reduced and a pressure increase phase in which the brake pressure is increased. A brake pressure control device detects the pressure reduction amount based on a wheel operation parameter. A brake pressure reducing action is repeatedly executed in the pressure reduction phase at a predetermined interval. Braking performance can be improved by use of the system of this invention.Type: GrantFiled: April 12, 1994Date of Patent: May 21, 1996Assignee: Mazda Motor CorporationInventor: Haruki Okazaki