Angular Position Patents (Class 702/151)
  • Patent number: 10309781
    Abstract: Techniques for computing a magnetic heading based on sensor data are described herein. An example of a device in accordance with the present techniques includes a magnetic sensor to collect sensor output data and a heading computation engine to compute a magnetic heading based on the sensor output data. The heading computation engine includes logic to measure a level of noise in the sensor output data. The heading computation engine also includes logic to determine whether to average the sensor output data based, at least in part, on the level of noise. The heading computation engine also includes logic to determine an applied sensor output based on the sensor output data. The heading computation engine also includes logic to compute a magnetic heading based, at least in part, on the applied sensor output.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 4, 2019
    Assignee: Intel Corporation
    Inventors: Gary A. Brist, Kevin J. Daniel
  • Patent number: 10310129
    Abstract: Sensor devices and methods for calculating an orientation of a sensor device including a magnetometer are disclosed. In one embodiment, a method of computing an orientation of a sensor device includes receiving a current magnetic field reading including at least a magnetic field magnitude, calculating a difference between the current magnetic field magnitude and a reference magnetic field magnitude, and comparing the difference between the current magnetic field magnitude and the reference magnetic field magnitude with a threshold. The method further includes adjusting a trust value of the magnetometer such that the trust value is decreased if the difference between the current magnetic field magnitude is greater than or equal to the threshold, and computing an orientation of the sensor device based at least on the trust value and the current magnetic field reading, wherein the trust value affects a reliance on the magnetic field reading in computing the orientation.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: June 4, 2019
    Assignee: YOST LABS INC.
    Inventors: Stephen P. Landers, Paul W. Yost, David Rieksts
  • Patent number: 10302434
    Abstract: The present invention relates generally to position determination, and more particularly to methods and apparatuses to determine the walking direction (heading of a user) using MEMS inertial sensors commonly found in mobile devices such as cellphones. According to some aspects, the invention includes a methodology to allow the walking angle to be determined dynamically. In embodiments, the methodology includes pattern matching accelerometer measurement data to a reference acceleration pattern.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 28, 2019
    Assignee: CSR TECHNOLOGY, INC.
    Inventors: Mahesh Chowdhary, Manish Sharma, Arun Kumar, Sankalp Dayal, Mahaveer Jain
  • Patent number: 10151587
    Abstract: In a method for determining navigation data, positional angle measurement values are determined using a first navigation device (310). A second navigation device (320) is then initialized using the positional angle measurement values determined by the first navigation device (310). Both navigation devices are supplied with rotational rate and acceleration measurement values from a common sensor unit in order to determine the positional angle measurement values. In the process, the first navigation device (310) produces erroneous measurements of the positional angle measurement values with a probability which is lower than as specified positional angle error rate, and the second navigation device (320) produces erroneous measurements of the positional angle measurement values with a probability which is higher than the specified positional angle error rate.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 11, 2018
    Assignee: NORTHROP GRUMMAN LITEF GmbH
    Inventors: Manfred Huellenkremer, Manfred Krings
  • Patent number: 10140580
    Abstract: A parametric oscillator oscillates a plurality of pseudo spin pulses SPi having mutually an identical oscillation frequency by using parametric oscillation, an interaction implementing unit performs feedback implementation of a magnitude and a sign of interaction related to each pseudo spin pulse SPi (the proportionality coefficient ?i+?Jij?j+?Kijk?j?k with respect to ?i) by using a tentative measurement result of oscillation phases ?i(tentative) of the plurality of pseudo spin pulses SPi, and a pseudo spin measuring unit measures the pseudo spins ?i of the plurality of pseudo spin pulses SPi, based on a final measurement result of oscillation phases ?i(steady) of the plurality of pseudo spin pulses SPi.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: November 27, 2018
    Assignees: Inter-University Research Institute Corporation, Research Organization of Information and Systems, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shoko Utsunomiya, Yoshihisa Yamamoto, Hiroki Takesue
  • Patent number: 10132827
    Abstract: A micro inertial measurement system includes a housing, a sensing module, and a damper. The sensing module includes a rigid sensing support, a measuring and controlling circuit board mounted on the rigid sensing support and an inertial sensor set on the measuring and controlling circuit board. The inertial sensor includes a gyroscope and an accelerometer. The sensing module is mounted in the housing. The damper is mounted in the housing and set in the gap between the sensing module and the inside wall of the housing. By use of the above-mentioned structure, the noise immunity of the inertial measuring system can be greatly improved, and the volume and weight of the inertial measuring system can be greatly reduced.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: November 20, 2018
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventor: Tao Wang
  • Patent number: 10132829
    Abstract: An inertial measurement system is disclosed. The inertial measurement system has an accelerometer processing unit that generates a calibrated accelerometer data. The inertial measurement system further includes a magnetometer processing unit generates a calibrated magnetometer data, and a gyroscope processing unit generates a calibrated gyroscope data. Using the calibrated accelerometer data, the calibrated magnetometer data, and the calibrated gyroscope data, the inertial measurement system generates a heading angle error indicative of the accuracy of the heading angle error.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: November 20, 2018
    Assignee: Invensense, Inc.
    Inventors: Yuan Zheng, Shang-Hung Lin, Kerry Keal
  • Patent number: 10120042
    Abstract: A magnetic field sensor has an error correction signal generator circuit to inject an error correction signal into a primary signal channel to cancel an error signal component in the primary signal channel.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: November 6, 2018
    Assignee: Allegro MicroSystems, LLC
    Inventors: Aurelian Diaconu, Ryan Metivier
  • Patent number: 10108315
    Abstract: Various embodiments are generally directed to cooperation among networked devices to obtain and use a multiple-frame screenshot. In one embodiment, an apparatus comprises a processor circuit executing instructions that cause the processor circuit to receive a signal conveying a video stream from a source device; visually present video frames of the video stream on a display associated with the apparatus; maintain a rolling buffer comprising a plurality of video frames; recurringly update the plurality of video frames to represent a subset of video frames of the video stream most recently presented on the display; receive a signal indicative of a capture command; and preserve the subset of video frames as a multiple-frame screenshot in response to the capture command.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: October 23, 2018
    Assignee: INTEL CORPORATION
    Inventor: Wenlong Li
  • Patent number: 10078305
    Abstract: A method for retrieving phase information in a coherent diffraction imaging process includes acquiring a plurality of 3D data sets, each 3D data set corresponding to one of a plurality of time states, and reconstructing a 3D image of the object at a given time state using the 3D data set from all of the time states. Each 3D data set is acquired by: illuminating an object positioned in a first position with a coherent beam; measuring a first 2D diffraction pattern using an area detector; rotating the object around a tilt axis thereof to a second position that is different from the first position; re-illuminating the object positioned in the second position with the coherent beam; re-measuring a second 2D diffraction pattern using the area detector; and repeating the rotating, re-illuminating and re-measuring steps such that each 3D data set includes a predetermined number of diffraction patterns.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 18, 2018
    Assignee: UChicago Argonne, LLC
    Inventors: Andrew P. Ulvestad, Stephan O. Hruszkewycz, Paul H. Fuoss, Stefan M. Wild, Ashish Tripathi
  • Patent number: 10072948
    Abstract: An encoder includes a rotation position sensor, a first addition information generator, an identification information generator, and a sender. The rotation position detector is configured to detect a rotation position within one rotation of a rotation shaft of a motor. The first addition information generator is configured to generate first addition information for a period at least longer than a data sending period. The identification information generator is configured to generate identification information by which at least the first addition information is identifiable as information to be sent. The sender is configured to send, for the data sending period, sending data including the rotation position within one rotation. The sending data includes first sending data including the rotation position within one rotation, the identification information, and the first addition information.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 11, 2018
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kunihiko Ogawa, Keita Ogoh
  • Patent number: 10033252
    Abstract: An assembly for operating a DC synchronous machine according to an exemplary aspect of the present disclosure includes, among other things, a controller that is configured to determine a position of a rotating portion utilizing a carrier signal, adjust current supply to a field winding, and monitor and adjust operation of the DC synchronous machine based on various electrical parameters relating to the carrier signal. A method for operating a DC synchronous machine is also disclosed.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: July 24, 2018
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Gregory I. Rozman, Steven J. Moss, Jacek F. Gieras
  • Patent number: 10025109
    Abstract: Visual display systems are described having means for generating stereoscopic images, a device for visual display of said stereoscopic images having a projector and a semitransparent screen; and a pair of stereoscopic spectacles. The projector according to the invention has an imager and an interference filter, the spectral transmission of which has at least one transmission band of determined width centerd around a wavelength, said wavelength being dependent on the incidence of the light on said interference filter. The projector has means allowing the angular position of the filter to be varied between two determined positions so as to transmit, according to the position, either a first spectral band or a second spectral band. The pair of stereoscopic spectacles has a first lens transmitting the first spectral band and blocking the second spectral band and a second lens providing the opposite function.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: July 17, 2018
    Assignee: Thales
    Inventors: Philippe Coni, Matthieu Grossetete, Aude Gueguen
  • Patent number: 10025891
    Abstract: The disclosed invention provides a method that exploits the correlations in the statistical properties of one inertial sensor to another. Among the dominant noise sources, the additive noise terms for different sensors are uncorrelated, however, there may be correlations between the random drift of different sensors. The method of the present invention estimates these correlations from a finite amount of calibration data in order to calculate coefficients for the optimal linear combination of multiple sensor signals. The method is a means of combining the multiple sensor outputs to obtain a virtual sensor signal with reduced drift, and in a far more time efficient and less processor intensive way than the prior art.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: July 17, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ahmed S Zaki, Richard Vaccaro
  • Patent number: 9909872
    Abstract: Systems and methods for inertial reference system alignment are provided. In certain embodiments, a system comprises an inertial reference system, the inertial reference system providing motion measurements; and a processing system coupled to receive the motion measurements from the inertial reference system. Further, the processing system is configured to execute instructions that direct the processing system to identify one or more frequencies in the spectrum of the motion measurements that are associated with vibrations; attenuate the motion measurements at the one or more frequencies; and use the attenuated measurements to aid in the production of navigation information.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: March 6, 2018
    Assignee: Honeywell International Inc.
    Inventors: Subhabrata Ganguli, Michael Ray Elgersma
  • Patent number: 9800768
    Abstract: An electronic device having a camera module. The electronic device comprises: a Printed Circuit Board (PCB) located on a surface of the camera module; a lens module mounted on a first area of the PCB; fixing maintaining components mounted on a second area of the PCB; and a third area located between the first area and the second area, and having at least one opening.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 24, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seungjae Bae, Soonwoong Yang, Seungki Choi
  • Patent number: 9689763
    Abstract: A cutout portion is formed in a substrate of a magnetic detection device, the cutout portion opening at an outer edge of the substrate. Magnetic detection elements of a magnetic sensor detects magnetic field formed by first and second collector portions. A mold section encapsulates the magnetic detection elements. The magnetic sensor is surface mounted such that a portion of the mold section overlaps with the cutout portion. The first collector portion faces a front surface of the magnetic sensor. A portion of the second collector portion is positioned in the cutout portion to face a rear surface of the magnetic sensor. Accordingly, compared to a case where a cutout portion is not provided, a magnetic circuit gap between the first and second collector portions is reduced.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Takahashi, Shigetoshi Fukaya
  • Patent number: 9689762
    Abstract: A hole is formed in a substrate of a magnetic detection device, the hole being spaced away from an outer edge of the substrate. Magnetic detection elements of a magnetic sensor detects magnetic field formed at first and second collector portions. A mold section encapsulates the magnetic detection elements. The magnetic sensor is surface mounted such that a portion of the mold section overlaps with the hole. The first collector portion faces a front surface of the magnetic sensor. A portion of the second collector portion is positioned in the hole to face a rear surface of the magnetic sensor. Accordingly, compared to a case where a hole is not provided, a magnetic circuit gap between the first and second collector portions is reduced.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: June 27, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yoshiki Takahashi, Shigetoshi Fukaya
  • Patent number: 9682856
    Abstract: MEMS devices fabricated using inexpensive substrate materials such as paper or fabric, are provided. Using paper as a substrate, low cost, simple to prepare, lightweight, disposable piezoresistive sensors, including accelerometers are prepared. Signal-processing circuitry can also be patterned on the substrate material. The sensors can be utilized as two-dimensional sensors, or the paper substrate material can be folded to arrange the sensors in a three dimensional conformation. For example, three sensors can be patterned on a paper substrate and folded into a cube such that the three sensors are orthogonally positioned on the faces of a cube, permitting simultaneous measurement of accelerations along three orthogonal directions (x-y-z). These paper-based sensors can be mass produced by incorporating highly developed technologies for automatic paper cutting, folding, and screen-printing. Also provided are methods of modifying paper for use as a substrate material in MEMS devices.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: June 20, 2017
    Assignee: President and Fellows of Harvard College
    Inventors: George Whitesides, Xinyu Liu, XiuJun Li, Martin M. Thuo, Michael O'Brien, Yu Sun
  • Patent number: 9677912
    Abstract: A rotation angle detection device includes: a magnetic field generation portion that generates a magnetic field; and a first magnetism detection element and a second magnetism detection element disposed to have an angle of 90° therebetween in a rotation direction of the detection target and to rotate relative to the magnetism generation portion. The first magnetism detection element outputs a first output signal, and the second magnetism detection element outputs a second output signal. An amplitude shift correction circuit matches amplitudes of the first output signal and the second output signal which differ in phase by 90° from each other. A rotation angle computation circuit connected to the amplitude shift correction circuit computes and outputs a rotation angle of a detection target based on the first output signal and the second output signal having matched amplitudes.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: June 13, 2017
    Assignee: DENSO CORPORATION
    Inventor: Akitoshi Mizutani
  • Patent number: 9637023
    Abstract: A motor controller including a control unit designed for receiving and/or processing a movement signal and for outputting a control signal depending on the movement signal, and including a power stage which is designed for enabling an electric energy flow as a function of the control signal, and further including a sensor designed for detecting a movement of the electric motor and for providing a movement-dependent sensor signal to a sensor input of the control unit, wherein the control unit is designed for detecting a usage-dependent load value for a movement system driven by the electric motor and wherein the control unit includes a component memory for storing parameters of components of the movement system, a processing device for combining the parameters with incoming sensor signals to produce a load value and a load value memory for storing the established load value.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: May 2, 2017
    Assignee: FESTO AG & CO. KG
    Inventors: Dominic Kadynski, Jan Reimer, Martin Gulla
  • Patent number: 9594435
    Abstract: Disclosed are a display apparatus and a contents display method. The display apparatus includes: a mobile device tracing information processing unit for receiving position information or orientation information of a mobile device and generating tracing information of the mobile device based on the received position information or orientation information of the mobile device; a gesture processing unit for receiving input information of the mobile device and generating gesture information to change an output format of contents by using the received input information; a rendering unit for generating a predetermined contents image based on the tracing information of the mobile device and the gesture information; and a display unit for displaying the generated contents image.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: March 14, 2017
    Assignee: Korea Institute of Science and Technology
    Inventors: Ji Hyung Park, Dong Wook Yoon, Joong Ho Lee
  • Patent number: 9555758
    Abstract: A safety arrangement for a vehicle. The safety arrangement has a control unit; one or more sensors, a road detection arrangement; and one or more vehicle safety systems. The control unit processes the signals from the sensors and determines whether the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. The control unit will activate one or more of the vehicle safety systems if it is determined that the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. Signals, or derived quantities, from the sensors are compared against a threshold to determine whether to activate a vehicle safety system. A first threshold level is used if the vehicle has not or is not likely to leave the road, and a second threshold level is used if the vehicle has or is likely to leave the road.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: January 31, 2017
    Assignees: Autoliv Development AB, Volvo Car Corporation
    Inventors: Yann Le Merrer, Arnaud Devavry, Pär Nilsson
  • Patent number: 9484970
    Abstract: A novel noise injection technique is presented to improve dynamic range with low resolution and low speed analog to digital converters. This technique combines incoming signal and noise signal with wave front de-multiplexer and split into several channels. Then low resolution and low speed analog to digital converters are used to sample each channels. All signals are recovered using wave front multiplexer. For advanced design, ground diagnostic signals with optimizing processor can be added to guarantee recovery quality.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: November 1, 2016
    Inventors: Donald C. D. Chang, Tzer-Hso Lin, Yuanchang Liu
  • Patent number: 9462419
    Abstract: In order to accurately determines the hold state of a mobile device possessed by a user while moving, provided is a hold state judging apparatus including an acquiring section that acquires output signals of sensors mounted in a mobile device held by a user; a pattern storage section that stores, in association with each other, information indicating a plurality of hold states of the mobile device and reference characteristic amounts of the output signals of the sensors obtained in advance respectively for the plurality of hold states; a hold state judging section that judges the hold state of the mobile device based on which of the reference characteristic amounts stored in the pattern storage section characteristic amounts of the output signals of the sensors acquired by the acquiring section correspond to. Also provided is a program.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: October 4, 2016
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Shiro Kobayashi, Yuko Akagi
  • Patent number: 9410790
    Abstract: A method for determining an angle of rotation between a sensor array and a magnetic field of a magnet, whereby the magnetic field is formed substantially parallel and perpendicular to the rotation axis, and the magnet is arranged rotationally symmetric relative to the rotation axis. A first measurement signal and a second measurement signal are generated by the two subsensors of the first magnetic field sensor unit, and the first measurement signal is assigned a first relation and the second measurement signal is assigned a second relation. A third measurement signal and a fourth measurement signal are generated by the two subsensors of the second magnetic field sensor unit, whereby the third measurement signal is assigned a third relation and the fourth measurement signal is assigned a fourth relation. The angle of rotation is then determined.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: August 9, 2016
    Assignee: Micronas GmbH
    Inventor: Dieter Baecher
  • Patent number: 9395187
    Abstract: A device is described herein for determining azimuth comprising a MEMS inertial measurement unit (IMU), a GPS system comprising a GPS antenna and receiver, and a processor configured to receive data from said IMU and from said GPS system, said processor being configured to process said IMU data and said GPS data to derive a true north reference based on said IMU data and said GPS data. A method for determining azimuth is also described herein.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: July 19, 2016
    Assignee: ATLANTIC INERTIAL SYSTEMS LIMITED
    Inventors: John Keith Sheard, Nicholas Faulkner
  • Patent number: 9389631
    Abstract: A reactive power control system is provided. The reactive power control system computes a required value for a reactive power based on a state observer method for at least one electrical element in an electrical system. The reactive power control system also generates a reactive power command based on the required value of the reactive power. The reactive power control system further transmits the reactive power command to the electrical element in the electrical system for generating the required value of reactive power to compensate for a voltage change induced by the respective electrical element in the electrical system.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: July 12, 2016
    Assignee: General Electric Company
    Inventors: Ara Panosyan, Daniel Kotzor, Reigh Allen Walling, Johannes Huber
  • Patent number: 9372100
    Abstract: This disclosure relates to a method for detecting an absolute rotation angle of an optical rotary encoder, and more particularly, to an optical encoder having a signal track for generating a digital pulse which may correct an error when a high-level bit is generated in a Vernier type. The optical encoder according to an embodiment of the present disclosure includes a master track for generating a sinusoidal signal with the fastest cycle, a Vernier track for generating a sinusoidal signal with a cycle smaller than that of the master track by a predetermined value, and a digital track for generating a digital pulse signal with a cycle proportional to the cycle of the sinusoidal signal of the master track.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 21, 2016
    Assignees: SNU R&D Foundation, RS Automation Co., Ltd.
    Inventors: Dong Il Cho, Wook Bahn, Tae Il Kim, Sang Hoon Lee
  • Patent number: 9250068
    Abstract: A rotation angle detecting device includes a resolver that outputs three-phase signals based on a rotation angle of a rotary shaft, and an R/D converter that acquires the three-phase output signals via signal lines corresponding to the respective phases. The R/D converter determines the rotation angle of the rotary shaft on the basis of the three-phase output signals. The R/D converter includes switching elements that change the potential of the first-phase signal line and the potential of the second-phase signal line, respectively.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 2, 2016
    Assignee: JTEKT CORPORATION
    Inventor: Noritake Ura
  • Patent number: 9247142
    Abstract: The present invention provides a method for providing the operation state of an external device and an apparatus using the method. A method for providing the operation state of an external device according to the present invention comprises displaying a preview image of a camera; identifying an external device displayed on the preview image; generating an indicator corresponding to the operation state of the external device; and displaying the indicator by matching the indicator to an area in the preview image to which a component related to the operation state belongs. According to the present invention, information about the operation state of a component disposed inside of an external device can be checked by making use of augmented reality.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: January 26, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Ji Hea Kim, Jong Ook Kim, You Sook Eun, Ji Sun Lee
  • Patent number: 9229232
    Abstract: A display system for a torque tool which is provided for measuring or applying torque comprises a housing having a handle at one end. A measuring arrangement for detecting torque is arranged in the housing. At the other end of the housing a connection element is provided for transmitting torque to a workpiece. Furthermore, a processor-controlled control digitally processes set or measured data and a display cooperates with the control and displays graphic display contents or data, such as the applied or set torque. A transmission device and a separate display device for transmitting and displaying the graphical display contents or data are provided.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: January 5, 2016
    Inventor: Michael Backhaus
  • Patent number: 9212964
    Abstract: Method and apparatus for determining geometrical dimensions of a wheel, especially a vehicle wheel, or of at least a part of the wheel, comprising the steps of pivoting at least one sensing device for scanning the wheel surface or a part of the wheel surface about a pivot axis in plane perpendicular to the wheel axis and determining the geometrical dimensions of the scanned wheel surface in dependence from the angular position of the at least one sensing device, wherein the angular position is determined from measured accelerations of the sensing device in two predetermined directions during the pivotal movement of the sensing device.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: December 15, 2015
    Assignee: SNAP-ON EQUIPMENT SRL A UNICO SOCIO
    Inventor: Francesco Braghiroli
  • Patent number: 9157749
    Abstract: A position calculation method includes: by using a current position of a mobile object, a link candidate point position, an error variance of positions of a plurality of links included in a region around the current position, and an error variance of azimuths of the plurality of links, calculating, an evaluation value that corresponds to a probability that the mobile object is traveling upon a road corresponding to each link candidate point, for each link including the each link candidate point; and calculating the current position based upon the evaluation value, by taking the mobile object as being positioned at a link candidate point, among a plurality of link candidate points, for which the probability is highest.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: October 13, 2015
    Assignee: Clarion Co., Ltd.
    Inventors: Toshiyuki Aoki, Mikio Bando, Tomoaki Hiruta, Hiroyuki Kohida, Koichi Kato, Akihiro Kawabata
  • Patent number: 9134143
    Abstract: In an absolute position detector, a relative error calculation circuit calculates, at times indicated by a clock signal C1, a relative error E between an output ?2 from an absolute position detection sensor and a position output ?1 from a high-resolution position detection sensor. An abnormality judgment unit judges whether the relative error E exceeds a preset abnormality judgment value. A clock switching unit outputs, as the clock signal, a high-speed clock CH having a period shorter than a noise generation period when the relative error E is judged as exceeding the preset abnormality judgment value, and outputs a slow-speed clock CL in other cases. A counter measures, based on the clock signal C1, a duration in which the abnormality detection signal AF is maintained HI, and outputs an alarm when the duration exceeds the noise generation period.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: September 15, 2015
    Assignee: OKUMA Corporation
    Inventor: Shinji Shibata
  • Patent number: 9101296
    Abstract: A goggle based light-weight VOG/EOG system includes at least one digital camera connected to and powered by a laptop computer through a firewire connection. The EOG system is incorporated directly into a goggle base. The digital camera may digitally center the pupil in both the X and Y directions. A calibration mechanism may be incorporated onto the goggle base. The VOG system may track and record 3-D movement of the eye, track pupil dilation, head position and goggle slippage. An animated eye display provides data in a more meaningful fashion. The VOG system is a modular design whereby the same goggle frame or base is used to build a variety of digital camera VOG systems.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 11, 2015
    Assignee: NEURO KINETICS
    Inventors: John Howison Schroeder, Alexander D Kiderman, Thomas C. Joos, Floris L. Wuyts, Steven T Moore, Hamish G MacDougall
  • Patent number: 9071862
    Abstract: A handheld electronic device and a remote control method are provided. The handheld electronic device comprises a display unit, an electronic compass and a processing unit. The reference locations are correlated with the controlled device. The processing unit constructs the coordinate system and calculates the reference location coordinates for the reference locations in the coordinate system. After the coordinate system is constructed, the electronic compass measures the current direction information directed towards the controlled device to be remote controlled from a current location. The processing unit controls the display unit to display a control interface of the controlled device to be remote controlled. The electronic compass measures origin direction information directed towards at least two reference locations from an origin location and measures move direction information directed towards the reference locations from a move location.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: June 30, 2015
    Assignee: ARCADYAN TECHNOLOGY CORPORATION
    Inventors: Hsaio-Han Chen, Yi-Bing Lin, Coral Ying-Rong Sung, Ren-Huang Liou
  • Patent number: 9049371
    Abstract: A method and apparatus for operating a camera are provided herein. During operation of the camera, a first field of view (FOV) for the camera will be determined along with “undesirable” camera directions. A determination is made whether or not to obtain images from the camera based on whether or not the first FOV is aligned with an undesirable camera direction.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: June 2, 2015
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Alejandro G. Blanco, Shervin Sabripour
  • Publication number: 20150149112
    Abstract: A multiturn rotary encoder includes: a single-turn unit, including a code carrier that is able to be scanned by a single-turn scanner in order to generate single-turn position signals, and a single-turn evaluation unit for processing the single-turn position signals to form at least one single-turn code word that indicates the absolute position of an input shaft within one revolution; a first multiturn unit dependent on a power supply, including at least a first multiturn code carrier that is able to be scanned by a first multiturn scanner in order to generate first multiturn position signals, and a first multiturn evaluation unit for processing the first multiturn position signals to form a first multiturn code word that indicates the number of revolutions executed by the input shaft; and a second multiturn unit independent of a power supply, including at least a second multiturn code carrier that is able to be scanned by a second multiturn scanner in order to generate second multiturn position signals, and
    Type: Application
    Filed: November 28, 2014
    Publication date: May 28, 2015
    Inventor: Martin Von Berg
  • Publication number: 20150142377
    Abstract: An encoder system includes a signal processing circuit including: (1) a first position data detection circuit that detects first position data representing positional displacement in rotation of an input shaft through first predetermined signal processing based on a first detection signal input from a first absolute position encoder; (2) a second position data detection circuit that detects second position data representing positional displacement in rotation of an output shaft through second predetermined signal processing based on a second detection signal input from a second absolute position encoder; (3) a position data combination circuit that combines the first and second position data to generate combined position data representing the number of rotations of the input shaft and the positional displacement within one rotation of the input shaft; and (4) a position data comparing and collating circuit that compares and collates the first and second position data.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Applicant: NIKON CORPORATION
    Inventors: Hiroyuki KISHIDA, Toru MORITA, Yoshiji TAKAHASHI
  • Publication number: 20150137728
    Abstract: A circuit is provided for detecting peaks of a sinusoidal input signal includes circuitry for generating first and second sinusoidal output signals that are out of phase with one another and with the sinusoidal input signal. A comparator block compares the sinusoidal output signals to determine instances where the amplitudes of the first and second sinusoidal output signals cross over each other. The sinusoidal output signals may lead the sinusoidal input signal somewhat so that, after taking into account processing delay, the indicated crossover instances substantially coincide with peaks in the sinusoidal input signal such that a trigger signal generated by the circuit accurately indicates the timing of the peaks.
    Type: Application
    Filed: December 19, 2012
    Publication date: May 21, 2015
    Applicant: Magna E-Car Systems of America, Inc.
    Inventors: Thomas J. Wand, Roger Douglas
  • Publication number: 20150142376
    Abstract: Embodiments relate to magnetic field sensors, such as gradiometric magnetic field angle sensors with generally on-axis arrangements of sensor elements relative to a rotation axis of a magnet. In one embodiment, an angle sensor is arranged on-axis with respect to the rotation axis of a magnet that generates a magnetic field that can be detected by the angle sensor and analyzed to determine an angular position of the magnet. The sensor can comprise a plurality of sensor elements, such as two sensor elements, arranged on a substrate or die in a sensor package. As it rotates, the magnet generates a magnetic field, such as an inhomogenous magnetic field having a component perpendicular to the rotation axis and acting on the angle sensor.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 21, 2015
    Inventor: Udo Ausserlechner
  • Publication number: 20150134293
    Abstract: Provided is a capsize risk level calculation system which can calculate a capsize risk level providing an index of the capsize risk on an oscillation of hull without using hull information. This system includes an acceleration sensor detecting a reciprocating motion in an up-down direction of a vessel as an oscillation in an up-down direction of a virtual oscillation center axis; an angular velocity sensor detecting a simple pendulum motion in a rolling direction around the vessel center axis as a simple pendulum motion of the vessel COG around the oscillation center axis; and an arithmetic part calculating a capsize risk level from an oscillation radius connecting between the oscillation center axis and the vessel COG, and a capsize limit oscillation radius connecting between the oscillation center axis and the vessel metacenter, which are obtained on the results of detection by the acceleration sensor and the angular velocity sensor.
    Type: Application
    Filed: May 16, 2013
    Publication date: May 14, 2015
    Applicant: NAT'L UNIV. CORP. TOKYO UNIV. OF MARINE SCIENCE AND TECH.
    Inventor: Yutaka Watanabe
  • Publication number: 20150134294
    Abstract: An attitude calculation apparatus includes a gyro sensor that detects angular velocity in a first coordinate system for an inertial coordinate system, of a living body or a moving object which moves by using energy of the living body as a power source, an attitude change calculation unit that calculates an attitude change of the moving object on the basis of the angular velocity which is input at a first frequency f1, and an attitude update unit that updates an attitude of the moving object on the basis of the attitude change which is input at a second frequency f2, in which the first frequency and the second frequency satisfy f1>f2?20 Hz.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Shunichi MIZUOCHI, Katsuhiko Maki, Katsuhito Nakajima
  • Patent number: 9026398
    Abstract: A motion analysis device includes two posture angle sensors attached to a measurement object at locations distant from each other, a data acquisition section, a posture angle correction section, and a deformation amount calculation section. The data acquisition section acquires data of a first posture angle and a second posture angle respectively detected by the posture angle sensors. The posture angle correction section corrects a difference between the first posture angle and the second posture angle after starting a motion of the measurement object in accordance with a difference between the first posture angle and the second posture angle before starting the motion of the measurement object. The deformation amount calculation section calculates a deformation amount of the measurement object based on a difference between the first posture angle and the second posture angle corrected by the posture angle correction section.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 5, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Toshiyasu Takasugi, Masatoshi Sato, Kazuo Nomura
  • Patent number: 9024772
    Abstract: A system is invented to combine different signals from various sensors together so that an object (such as a car, an airplane etc.)'s position and/or orientation can be measured.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: May 5, 2015
    Inventors: Xianghui Wang, Wensheng Hua
  • Patent number: 9020775
    Abstract: Provided is an apparatus for measuring a shape and area of a ship block, which may accurately recognize a piling location of a ship block by measuring a shape and area of the ship block piled up in a yard. The apparatus for measuring a shape and area of a ship block includes a direction angle sensor, a range finder, a radio frequency identification (RFID) reader and a block shape and area measuring system. The block shape and area measuring system includes a block shape and area measuring server, a vector calculating module, a coordinate calculating module, a shape and area extraction module and a memory module.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: April 28, 2015
    Assignee: Hyundai Industries Co., Ltd.
    Inventors: Tae Hyun Baek, Ji Hwang Jang, Ji On Kim, Moon Young Chung, Byeong Yeol Lee, Sang Gyu Min
  • Patent number: 9020774
    Abstract: An encoder system includes: a first single-rotation absolute encoder that outputs a first signal corresponding to an angular position of a first rotatable shaft; a power transmission device that transmits the power of the first shaft to a second rotatable shaft with a predetermined transmission ratio; a second single-rotation absolute encoder that outputs a second signal corresponding to an angular position of the second shaft; and a signal processing section that generates data related to the rotation count of the first shaft based on at least the first signal and the second signal.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: April 28, 2015
    Assignee: Nikon Corporation
    Inventors: Hiroyuki Kishida, Toru Morita, Yoshiji Takahashi, Kou Ohno, Takashi Nagase, Kenji Omata, Hirofumi Takeuchi
  • Publication number: 20150112634
    Abstract: An angle detection device which includes multiple sensors to output multiple sinusoidal signals having different phases according to the rotation angle of a rotating body; a rotation calculation device to detect the rotation angle based on the multiple sinusoidal signals and detect an amplitude of the multiple sinusoidal signals to output the amplitude of the multiple sinusoidal signals as amplitude signal; and an amplitude comparison device to compare the amplitude signal with a predetermined amplitude target value and output an amplitude error signal indicating the comparison result; wherein the error of amplitude of the multiple sinusoidal signals is corrected by increasing or decreasing a drive input of a sensor driving unit based on the amplitude error signal.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 23, 2015
    Inventor: Fumihiro SHIMIZU
  • Publication number: 20150108878
    Abstract: Methods and systems for measuring angular position include measuring an angular position within one rotation of a primary gear and a secondary gear that are meshed together. The primary gear and secondary gear have a first and second number of teeth respectively, where the first number of teeth and the second number of teeth are different. An angular position for the secondary gear is estimated using the measured primary gear angle and a reference value for each of the primary and secondary angle sensors. A number of primary gear rotations is calculated using the estimated angular position for the secondary gear and the measured angular position of the secondary gear. An angular position of the primary gear is calculated over multiple rotations using the calculated number of primary gear rotations, a reference value for the primary angle sensor, and the measured angle value of the primary gear within one rotation.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 23, 2015
    Inventors: Sean Rodger, Erwin Rodger, Rob Koch, Tom Quartararo