Using Phase Difference Of Output Signals From Plural Photodetectors Patents (Class 250/231.16)
  • Patent number: 11034537
    Abstract: The present invention relates to a positioning module and a driving control device of carrier unit with the positioning module. In the present invention, the positioning module calculates the unwinding length and unwinding angle of a wire which is unwound by an external force. Then, the positioning module sequentially calculates location information of some points on the wire and the speed of the wire. When the speed exceeds the threshold value, the positioning module generates a control signal corresponding to the number of times where the speed exceeds the threshold value, by using the unwinding length and the unwinding angle.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: June 15, 2021
    Assignee: OMOROBOT INC.
    Inventor: Seok-Hoon Yoon
  • Patent number: 10962418
    Abstract: A measuring device including a light source emitting a light beam, a first beam splitter disposed on a light path of the light beam, an optical grating, a reflector, and a sensor is provided. The light beam is divided into first and second light beams by the first beam splitter. The optical grating is disposed on light paths of the first and second light beams. The first beam splitter enables the first light beam to be delivered to the optical grating. The reflector is disposed on the light path of the second light beam. The first beam splitter enables the second light beam to be delivered to the reflector and reflected to the optical grating. The first and second light beams are diffracted by the optical grating to generate multiple first and second diffraction light beams at different angles respectively, which are received by the sensor after interference.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: March 30, 2021
    Assignee: Industrial Technology Research Institute
    Inventor: Chien-Wen Chen
  • Patent number: 10955265
    Abstract: An encoder scale includes a tabular base material and an optical pattern provided above one surface of the base material, a first region and a second region being disposed side by side above the optical pattern. The first region includes a resin layer disposed above the base material and including photosensitive resin and a metal film disposed above the resin layer and formed of a metal material. The surface of the first region is configured mainly by a first surface having a normal line in the thickness direction of the base material. The surface of the second region is configured mainly by a second surface inclined with respect to the first surface.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: March 23, 2021
    Inventor: Akio Konishi
  • Patent number: 10907996
    Abstract: A measurement apparatus includes: a light source that emits light; a scale that has a plurality of tracks whose patterns are different from each other, the tracks passing at least a part of lights emitted by the light source; a light receiving part that has a plurality of light receiving elements that each output an optical signal corresponding to strength of light received through the tracks; and a signal generation part that generates a serial signal in which a plurality of the optical signals are time-division multiplexed and sends the generated serial signal.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 2, 2021
    Assignee: MITUTOYO CORPORATION
    Inventors: Hirokazu Kobayashi, Akio Kawai
  • Patent number: 10885757
    Abstract: An optical smoke detector using a two-color principle is provided. The smoke detector may include a light emitting diode (LED), and a photosensor spectrally coordinated with the LED. The LED includes an LED chip configured to emit light in a first wavelength range, and a light converter configured to convert part of the emitted light from the LED chip into light in a second wavelength range, wherein the second wavelength range has a spectral half-width having a maximum of 150 nm.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: January 5, 2021
    Assignee: SIEMENS SCHWEIZ AG
    Inventors: Aleksandar Duric, Hilmar Konrad
  • Patent number: 10830668
    Abstract: An engine vibration imager and method of testing engine stability. An accelerometer, mounted to an engine block, is configured to detect engine vibration and generate a signal indicative of detected vibration. An amplifier, electrically coupled to the accelerometer, is configured to amplify the signal indicative of detected vibration. A light indicator, electrically coupled to the amplifier, is configured to emit light upon receiving the amplified signal. The engine vibration imager also includes an indicator disk including timing marks on a first surface of the indicator disk. The indicator disk is rotatable by the crankshaft and light emitted from the light indicator is visible at the first surface of the indicator disk and indicates on the indicator disk a point in the combustion cycle in which engine vibration is detected.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: November 10, 2020
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Craig M. Wall, Peter M. Lee
  • Patent number: 10768026
    Abstract: An optical element for generating diffraction orders for an encoder apparatus, in which the optical element includes an array of diffraction features arranged such that the spacing between the centres of adjacent diffraction features varies irregularly from one pair of adjacent features to the next.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: September 8, 2020
    Assignee: RENISHAW PLC
    Inventor: Jason Kempton Slack
  • Patent number: 10768025
    Abstract: An encoder includes an optical component and an enclosing device having a first surface portion and a second surface portion. The first surface portion is arranged to receive from an ambient environment a first radiation beam. The second surface portion is arranged to receive from the ambient environment a second radiation beam. The optical component is arranged to combine the first and second radiation beams. The enclosing device is arranged to propagate the first radiation beam along a first path. The first path is between the first surface portion and the optical component. The enclosing device is arranged to propagate the second radiation beam along a second path. The second path is between the second surface portion and the optical component. The enclosing device is arranged to enclose a space, so as to isolate the first path and the second path from the ambient environment.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 8, 2020
    Assignee: ASML Netherlands B.V.
    Inventors: Wouter Onno Pril, Jan Peter Baartman, Allard Eelco Kooiker, Suzanne Johanna Antonetta Geertruda Cosijns, Bryan Tong-Minh
  • Patent number: 10739168
    Abstract: An absolute encoder is driven by backup power from an external battery for backup. The absolute encoder includes: a clock generator configured to generate backup clock pulses at intervals of a predetermined period when the backup power is supplied; an analog signal generation circuit configured to operate according to the clock pulse so as to detect a displacement position of a motor and generate an analog signal corresponding to the detected displacement position; a comparator configured to operate according to the clock pulse so as to compare the analog signal with a predetermined voltage; and a clock control circuit configured to control the clock generator to change the pulse width of the clock pulse.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: August 11, 2020
    Assignee: FANUC CORPORATION
    Inventor: Youhei Kondou
  • Patent number: 10684144
    Abstract: A position measuring device includes: a graduation carrier on which a measuring graduation is provided; a scanning unit for generating position-dependent scanning signals by scanning the measuring graduation; and a signal processing unit for processing the scanning signals into position signals. A monitoring unit is provided, to which at least one signal to be monitored is supplied, and by which a modification signal is able to be output to a modification unit based on the monitoring of the signal to be monitored. At least one position signal is supplied to the modification unit, and the position signal is able to be modified by the modification unit for the transmission of at least one status report and able to be output as output signal to subsequent electronics. The modification is implemented based on the modification signal by adding a disturbance variable to the at least one position signal.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 16, 2020
    Assignee: DR. JOHANNES HEIDENHAIN GMBH
    Inventor: Martin von Berg
  • Patent number: 10634523
    Abstract: The present invention is directed to an optical system for measuring the rotation angle of rotatable object having a rotation shaft (2), which system comprises a reflective diffraction element (6) mounted on said shaft and a module that includes a radiation source (8) emitting a monochromatic beam (bo) towards this element and a radiation-sensitive detection structure (14, 16), the diffraction element is configured to project diffraction order images (18) of its pattern onto associated sections (50(1)-54(2)) of an annular grating structure forming part of the detection structure and the surface size of the diffraction element is smaller than 20% of the surface size of the annular grating structure.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: April 28, 2020
    Assignee: Arges GmbH
    Inventors: Markus Guggenmos, Martin Hartmann, Bernhard Kiesbauer, Christiaan H. F. Velzel, Sven Pekelder, Rinze Frederik van der Kluit
  • Patent number: 10591651
    Abstract: The invention relates to electromagnetic radiation microoptical diffraction gratings and to a method suitable for the manufacture thereof. The diffraction gratings in accordance with the invention can be used as microspectrometers in the form of scanning microgratings. The microgratings are provided with a surface structure and are able to be manufactured cost effectively and in high volumes. The surface structure is formed at a surface of a substrate and is formed from linear structural elements arranged substantially equidistantly and aligned substantially parallel to one another. At least part of the surface of the substrate and of the structural elements is coated with at least one further layer which forms a uniform sinusoidal surface contoured in a wave-shape (sinusoidal) manner and having alternating arranged wave peaks and wave troughs. A reflective layer can additionally be applied to increase the intensity of reflected radiation.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: March 17, 2020
    Assignee: HIPERSCAN GMBH
    Inventors: Fabian Zimmer, Alexander Wolter, Harald Schenk
  • Patent number: 10580163
    Abstract: A displacement detecting apparatus according to the invention comprises: a mover which moves and positions a positioning object; an imager which images an image including an imaging object which is the positioning object or an object displacing integrally with the positioning object as the positioning object is displaced; and a displacement detector which detects the imaging object from the image imaged by the imager and detects a displacement of the positioning object based on the position of the imaging object detected in the image, wherein the displacement detector obtains a displacement amount of the positioning object with respect to a predetermined reference position from a value obtained by multiplying a distance between the position of the imaging object and the reference position in the image by a coefficient determined according to size of the imaging object in the image.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 3, 2020
    Assignee: SCREEN Holdings Co., Ltd.
    Inventors: Hiroaki Kakuma, Kazuhiro Kitamura
  • Patent number: 10514296
    Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: December 24, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Amir Arbabi, Andrei Faraon, Ehsan Arbabi
  • Patent number: 10437141
    Abstract: A laser projection device has at least one laser light source and a plurality of gratings, each grating having a light receiving side and a light emitting side. The plurality of gratings are arranged in a ring-shape having at least one row with the light receiving side of each grating facing a center of the ring. The laser projection device also has a motor configured to rotate the plurality of gratings about a rotational axis passing through the center of the ring. The plurality of gratings each comprise a pattern for forming an image when light is passed through the pattern. The plurality of gratings are arranged around the ring such that the plurality of patterns are configured to project an animated image when the plurality of gratings sequentially receive light from the at least one laser light source upon rotation of the grating set.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: October 8, 2019
    Assignee: Everstar Merchandise Co Ltd
    Inventors: Chen Der Li, Chen Chih Lung, Chen Chih Ming
  • Patent number: 10401809
    Abstract: An apparatus and a method for controlling a rotating body in an electronic device are provided. The method includes emitting light to at least one indicator among a plurality of indicators having different reflectivities in a rotating body, receiving light reflected from the at least one indicator, detecting a rotation parameter of the rotating body based on an amount of the reflected light received from the at least one indicator, and controlling the rotating body based on the rotation parameter.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Younhyoung Kim, Junhui Lee
  • Patent number: 10386208
    Abstract: The instant disclosure provides an optical scanning light-guiding encoder including a light-guiding grating wheel, a light-emitting module and an optical sensing module. The optical sensing module includes a plurality of sensor elements adjacent to the light-guiding grating wheel, and a plurality of exposed sensor areas of the plurality of sensor elements are offset in the transverse direction and are arranged along a plurality of different horizontal lines parallel to each other. The optical scanning light-guiding encoder provided by the instant disclosure utilizes the coordination of the light projected on the optical sensing module and the plurality of exposed sensor areas to increase the resolution thereof without increasing the size of the encoder and the number of blades thereof.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: August 20, 2019
    Inventor: Hsin-Te Tseng
  • Patent number: 10378932
    Abstract: A sensor including a generating unit; a detecting unit; a substrate; a member that exerts influence on an object to be detected; and a housing that includes a first housing that operably supports the member and a second housing to which a part of the substrate is fixed. The substrate includes a first portion provided with the generating unit and a second portion provided with the detecting unit that are integrated, and has a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. One of the first portion and the second portion is fixed to the second housing. A surface of the other of the first portion and the second portion adheres to the first housing.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 13, 2019
    Assignee: NSK LTD.
    Inventors: Yasuhiro Kawai, Toshiaki Oguchi, Hideki Furukawa, Tomoyuki Yanagisawa, Minoru Kubokawa
  • Patent number: 10345120
    Abstract: The instant disclosure provides a scanning light-guiding encoder by forward focusing including a light-guiding grating wheel, a light-emitting module and an optical sensing module. The light-emitting module is surrounded by the light-guiding grating wheel. The optical sensing module includes a plurality of sensor elements adjacent to the light-guiding grating wheel, and a plurality of exposed sensor areas of the plurality of sensor elements are offset in the transverse direction and are arranged along a plurality of different horizontal lines parallel to each other.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: July 9, 2019
    Inventor: Hsin-Te Tseng
  • Patent number: 10337892
    Abstract: A sensor including: a generating unit; a detecting unit that detects the object to be detected generated by the generating unit; and a substrate at which the generating unit and the detecting unit are provided. The substrate is a flexible substrate that includes a first portion provided with the generating unit and a second portion provided with the detecting unit, the first portion and the second portion being integrated, and that takes a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. A plate support member is attached to a back-side surface of at least one of the surface of the first portion and the surface of the second portion.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: July 2, 2019
    Assignee: NSK LTD.
    Inventors: Yasuhiro Kawai, Toshiaki Oguchi, Hideki Furukawa, Tomoyuki Yanagisawa, Minoru Kubokawa
  • Patent number: 10302464
    Abstract: The optical encoder according to the present disclosure includes a light receiving part formed with a plurality of first patterns, and a scale formed with second patterns and moving relative to the light receiving part, where at least one of the first and second patterns is aligned at a same interval to remove harmonic waves.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 28, 2019
    Assignee: RS AUTOMATION CO., LTD.
    Inventor: Sang Hoon Lee
  • Patent number: 10254137
    Abstract: A photoelectric encoder includes light receiving units configured to output a plurality of photocurrent signals obtained by receiving light emitted from a light emission unit, via a scale, a signal conversion unit configured to output a conversion signal by converting the plurality of photocurrent signals, a position calculation unit configured to calculate an absolute position based on the conversion signal, and a microcomputer configured to perform drive control of the light emission unit, the signal conversion unit, and the position calculation unit. The microcomputer intermittently drives at least either one of the light emission unit and the signal conversion unit, and causes the position calculation unit to execute calculation according to a timing of intermit driving.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 9, 2019
    Assignee: MITUTOYO CORPORATION
    Inventor: Hirokazu Kobayashi
  • Patent number: 10190891
    Abstract: Embodiments of the present disclosure provide an optical encoder for an electronic device. The optical encoder comprises an elongated shaft having an encoding pattern made up of axial markings and radial markings. The encoding pattern may be disposed around a circumference of the elongated shaft. The optical encoder also includes an optical sensor. In embodiments, the optical sensor includes an emitter and a photodiode array. The emitter causes light to shine on the encoding pattern. The encoding pattern reflects the light back to the photodiode array and the photodiode array determines movement of the shaft based on the reflected light.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: January 29, 2019
    Assignee: Apple Inc.
    Inventors: Fletcher R. Rothkopf, Prashanth S. Holenarsipur, Colin M. Ely
  • Patent number: 10088777
    Abstract: A rotation detection device includes a light emitting portion, a light-passing control member, and a light receiving portion. The light-passing control member controls passing of the light from the light emitting portion. The light receiving portion outputs a light receiving signal based on the light received by the respective light receiving elements as detection signals representing detection results of the rotation by the rotator. A first virtual extended line that extends the first opening margin and a light-receiving-portion center line along the first direction passing through the respective light receiving elements at the light receiving portion pass through positions shifted from a rotational center of the light-passing control member. The light receiving portion is arranged such that the first virtual extended line corresponds to the light-receiving-portion center line, when the first opening margin passes through an optical path from the light emitting portion to the light receiving portion.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: October 2, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yuta Nohara
  • Patent number: 10035535
    Abstract: There are provided a relative angle detection device suitable for expanding a torque detection range, and a torque sensor, an electric power steering device and a vehicle including the relative angle detection device. Based on a first sine signal representing sin(?os+??) and a first cosine signal representing cos(?os+??) in accordance with a rotation angle(?is) of a first multipolar ring magnet that synchronously rotates with an input shaft from between the coaxially arranged input shaft and an output shaft, and based on a second sine signal representing sin ?os and a second cosine signal representing cos ?os in accordance with a rotation angle(?os) of a second multipolar ring magnet that synchronously rotates with the output shaft, sin ?? and cos ?? are calculated in accordance with a relative angle(??) between the input shaft and the output shaft, and from ??=arctan(sin ??/cos ??), the relative angle(??) is calculated.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 31, 2018
    Assignee: NSK Ltd.
    Inventors: Kazuhiro Ohira, Masaki Kuwahara, Sumio Sugita, Shigeyuki Uematsu
  • Patent number: 9958988
    Abstract: In a method for optically capturing a fingerprint or an object on a surface (2) of a cover plate (1) of a screen with a plurality of photosensors (4) which are each assigned to a respective display pixel (6), the display pixels (6) emit light radiation and the photosensors (4) capture light radiation from the display pixels (6) reflected by the surface (2) within a scan angle (8). The scan angle (8) describes in a virtual mirror image plane (9) the size of the display pixel (6).
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: May 1, 2018
    Inventor: Dan Hossu
  • Patent number: 9927264
    Abstract: An encoder includes a disc having one or more slit arrays having multiple slits aligned in a circumferential direction of the disc, and an optical module positioned to face a portion of the slit array such that the slit array moves relative to the optical module in the circumferential direction of the disc. The optical module includes two or four light sources aligned along a direction corresponding to the circumferential direction and one or more light receiving arrays aligned along the direction corresponding to the circumferential direction, the light sources are positioned to irradiate light upon a portion of the slit array, and the light receiving array includes multiple light receiving elements positioned to receive the light irradiated by the light sources and light affected by actions of the slits.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: March 27, 2018
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Takehiko Hamada
  • Patent number: 9903742
    Abstract: A displacement detecting device includes a main scale and a detecting head unit. The detecting head unit includes a light source, a light receiving unit, and an index scale group that is disposed in the middle of a light path from the main scale to the light receiving unit. The index scale group includes two or more index scales including diffraction gratings, respectively. A positive s-th order diffracted light and a negative s-th order diffracted light of diffracted lights from the main scale are used as the signal lights. The displacement detecting device satisfies a first condition and a second condition, the first condition being expressed as follows: ?×(u1?u2)×(mN÷g)=2×sin ?, the second condition being expressed as follows: ?×u1×(mN÷g)?sin ???÷g×?i=1N (ti×mi).
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: February 27, 2018
    Assignee: MITUTOYO CORPORATION
    Inventor: Akihide Kimura
  • Patent number: 9897463
    Abstract: The invention proposes a method for operating a sensor system comprising at least one sensor unit which provides signals, in which the signals comprise primary measurement value signals which are measurement values of the sensor unit or are generated from measurement values of the sensor unit and in which the signals comprise coefficient signals which characterize the measurement value capture.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 20, 2018
    Assignee: BALLUFF GmbH
    Inventors: Thomas Burkhardt, Ralph Bauer
  • Patent number: 9891079
    Abstract: A double-bearing position encoder has an axle stabilized within a housing via two bearings disposed on opposite walls of the housing. The axle is in communications with a rotating cam. The cam actuates a pulser so as to generate an active pulse at a tissue site for analysis by an optical sensor. The axle rotates a slotted encoder wheel or a reflective encoder cylinder disposed within the housing so as to accurately determine the axle position and, hence, the active pulse frequency and phase.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 13, 2018
    Assignee: Masimo Corporation
    Inventor: Cristiano Dalvi
  • Patent number: 9857205
    Abstract: An encoder system includes a disc coupled to a hub, the disc including a sensible member. The encoder system also includes a sensor operable to cooperate with the sensible member to sense an operating parameter of the disc, and a base assembly movable relative to the hub. A portion of the sensor is coupled for co-movement with the base assembly and movable between a first position in which the portion of the sensor is a first axial distance from the disc and a second position in which the portion of the sensor is a second axial distance from the disc, the second axial distance falling within a desired operating range.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: January 2, 2018
    Assignee: Quantum Devices, Inc.
    Inventor: Todd S. Martin
  • Patent number: 9797748
    Abstract: An inductive gear sensing system suitable for sensing gear (gear tooth) movement, such as some combination of speed, direction and position, based on differential sensor response waveforms. Example embodiments of inductive gear sensing with differential sensor response for different gear configurations include generating differential pulsed/phased sensor response signals from dual differential sensors based on axial (proximity-type) sensing for offset differential sensors (FIG. 1B, 102, 102; FIG. 2B, 201, 202), and generating asymmetrical response signals from a single sensor based on lateral and axial sensing with either asymmetrical gear teeth (FIG. 3A, 30A; FIG. 3B, 30B) or an asymmetrical sensor (FIG. 4B, 401) or a combination of both.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: October 24, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: George P. Reitsma
  • Patent number: 9758327
    Abstract: A rotation detecting unit includes a light emitting device, a light receiving device, an output device, a rotatable plate, and a discriminating device. The rotatable plate includes a first portion and a second portion which are alternately provided along a circumferential direction, a third portion provided between the first portion and the second portion, and a fourth portion provided between the second portion and the first portion. When a region of the first portion is irradiated with light emitted from the light emitting device and received by the light receiving device, received light quantity of the light receiving device is a maximum. When a region of the second portion is irradiated with the light, the received light quantity is a minimum. When the third or fourth portion is irradiated with the light, the received light quantity is larger than the minimum and is smaller than the maximum.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: September 12, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masato Suzuki
  • Patent number: 9758191
    Abstract: A zero point calibration apparatus for a steering angle sensor using a rotational displacement difference includes: a steering angle sensor configured to sense a steering angle of a column in a steering apparatus for a vehicle; a motor angle sensor configured to sense a rotation angle of a motor which supports steering by the column in the steering apparatus; and a control unit configured to calculate a current rotational displacement difference pattern between the steering angle and the motor angle, and derive the middle point of the current rotational displacement difference pattern. When the middle point does not coincide with a zero point set in the steering angle sensor, the control unit determines that the zero point set in the steering angle sensor is abnormal, and calibrate the zero point.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: September 12, 2017
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Dong Hee Kim
  • Patent number: 9700159
    Abstract: A non-linear checkout stand which offers retailers additional options for configuring a store. An example checkout stand includes a housing including a first end and a second end, a conveyor for transporting items in a plurality of different directions along a non-linear path connecting the first end to the second end, and an item identifier within the housing on the non-linear path for automatically identifying the items.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: July 11, 2017
    Assignee: NCR CORPORATION
    Inventors: Ferdinand Calderon, Jason Delos Angeles
  • Patent number: 9683871
    Abstract: Provided is an optical encoder, including: a light receiving unit; and a scale moving relatively to the light receiving unit and including a first track and a second track each having patterns intended for projecting light onto the light receiving unit, wherein the number of patterns of the first track is Ns*Nd+i (where, Ns and i are an integer of 1 or greater, and Nd is an integer of 2 or greater), and the number of patterns of the second track is (Ns?1)*Nd+i, so an absolute angle of the scale can be calculated in real time and in high resolution.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: June 20, 2017
    Assignee: RS AUTOMATION CO., LTD.
    Inventor: Sang Hoon Lee
  • Patent number: 9677938
    Abstract: A spectral characteristic acquisition device includes a member configured to have a plurality of openings arrayed in a predetermined direction, each of the plurality of openings inclined with respect to the predetermined direction, the plurality of openings being configured to pass light beams from a plurality of positions on an object therethrough, a spectrally dispersing part configured to spectrally disperse the light beams having passed through the plurality of openings in a direction orthogonal to the predetermined direction, and a plurality of one-dimensional image capturing parts provided at a predetermined interval in a plurality of lines and configured to be irradiated with the light beams having been spectrally dispersed by the spectrally dispersing part, a plurality of pixels of the plurality of one-dimensional image capturing parts being arrayed in a direction parallel to the predetermined direction.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: June 13, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohei Shimbo, Naohiro Kamijo, Yoichi Kubota
  • Patent number: 9625332
    Abstract: In order to implement a structure capable of improving the resolution of torque measurement while preventing the plastic deformation of a torsion bar (15), an input-side stopper (61) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an input-side rotating body (55) that includes an input shaft (13) and an input gear (7), and an output-side stopper (63) having an uneven shape (gear shape) in the circumferential direction is provided in a portion of an output-side rotating body (56) that includes an output shaft (14) and an output gear (8). The input-side stopper (61) and the output-side stopper (63) are combined so as to be engaged to be able to transmit torque only when the torsional angle within the elastic range of the torsion bar (15) reaches a predetermined amount.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: April 18, 2017
    Assignee: NSK Ltd.
    Inventors: Tomoharu Saito, Yasuyuki Matsuda, Daisuke Gunji, Masafumi Hikida, Kazutaka Tanaka, Tohru Ueda, Yuka Kaneko, Tetsu Takehara, Hiroyasu Yoshioka
  • Patent number: 9627573
    Abstract: An optical sensor is described that includes a light emitter and a photodetector assembly directly attached to a transparent substrate. In one or more implementations, the optical sensor comprises at least one light emitter and a photodetector assembly (e.g., photodiodes, phototransistors, etc.). The light emitter(s) and the photodetector assembly are directly mounted (e.g., attached) to a transparent substrate.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: April 18, 2017
    Assignee: Maxim Integreated Products, Inc.
    Inventors: Jerome C. Bhat, Dan G. Allen, Richard I. Olsen, Kumar Nagarajan
  • Patent number: 9621810
    Abstract: A method of operating an electronic device is provided. The method includes acquiring an image including one or more objects, detecting distances between the one or more objects and the electronic device, determining a display methods to display information related to the one or more objects based on the distances, and displaying the information related to the one or more objects based on the determined display method.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: April 11, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-Suk Choi, Moon-Soo Kim
  • Patent number: 9518846
    Abstract: A reflective optical encoder, which is inexpensive and is compact in the axial direction thereof. An encoder has a generally circular code plate fixed to a rotating body such as a rotation shaft of a motor; and a light emitting unit and a light receiving unit which are positioned near a first major surface of the code plate. The code plate is made from a light transmissive resin, and on the first major surface, an incidence portion with a concavo-convex shape and an emission portion with a concavo-convex shape are formed. On a second major surface opposed to the first major surface, a transmission portion formed from a concavo-convex shape and configured to transmit light, and a total reflection portion formed from a flat surface and configured to totally reflect light, are formed, wherein the transmission portion and the total reflection portion constitute a code pattern section.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: December 13, 2016
    Assignee: Fanuc Corporation
    Inventors: Akinobu Sakata, Nobuyuki Ootake
  • Patent number: 9462205
    Abstract: An image processing device includes a gain correction processing unit, an interpolation correction processing unit, an image processing unit. Within a range including a correction target phase difference detecting pixel and a plurality of capturing pixels adjacent to the correction target phase difference detecting pixel and detecting the same color as a color of the correction target phase difference detecting pixel, when a signal value obtained by correcting an output signal of the correction target phase difference detecting pixel using gain correction processing is Sc, in a case in which Sc<TH1 or Sc>TH2, the image processing unit records, in a recording medium, a signal obtained by correcting the output signal of the correction target phase difference detecting pixel by the interpolation correction processing unit.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: October 4, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Kazufumi Sugawara
  • Patent number: 9417101
    Abstract: An optical encoder includes a light source, a scale which is irradiated by the light source and has a fine pitch pattern and a coarse pitch pattern in a measuring direction in one track, a high resolution detection sensor array which receives light from the scale and detects the fine pitch pattern, and a low resolution detection sensor array which receives light from the scale and detects the coarse pitch pattern. A transmittance distribution or a reflectivity distribution of the scale is a distribution obtained by summing up a modulation component which corresponds to the fine pitch pattern and in which integrated values in a direction perpendicular to the measuring direction form modulation amplitude uniform in the measuring direction and a modulation component which corresponds to the coarse pitch pattern and in which modulation amplitude is uniform in the measuring direction.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: August 16, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Chihiro Nagura
  • Patent number: 9304016
    Abstract: An encoder device for optical detection of movement or position includes a first terminal for delivery of an electric measurement code signal. The encoder device further includes a first printed circuit board, a detector mounted on the first printed circuit board, and a code device provided with a pattern. The detector and the code device are displaceable relative to each other, wherein the detector is adapted to generate the electric measurement code signal in dependence on the relative displacement. The detector includes at least one light-sensitive semiconductor chip having a first light-sensitive chip surface and a second chip surface on opposing sides. The first light-sensitive chip surface has a first chip contact area for an electrical connection.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: April 5, 2016
    Assignee: LEINE & LINDE AB
    Inventor: Per Andreason
  • Patent number: 9281978
    Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits analog signals with HART messages, and a phase coherent FSK demodulator receives and demodulates the analog signals with the HART messages. The FSK modulator is a digital modulator that outputs 1 or 0 for transmission. With oversampling and low pass filtering, the digital modulation results in low jitter and good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access (DMA) to further reduce the power consumption, thereby reducing the overall power consumption by around 50%.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: March 8, 2016
    Assignee: Smart Embedded Systems, Inc.
    Inventor: Pranatharthi Subbaratnam Haran
  • Patent number: 9234745
    Abstract: A method and system to measure misalignment error between two overlying or interlaced periodic structures are proposed. The overlying or interlaced periodic structures are illuminated by incident radiation, and the diffracted radiation of the incident radiation by the overlying or interlaced periodic structures are detected to provide an output signal. The misalignment between the overlying or interlaced periodic structures may then be determined from the output signal.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 12, 2016
    Assignee: KLA-Tencor Corporation
    Inventors: Ibrahim Abdulhalim, Mike Adel, Michael Friedmann, Michael Faeyrman
  • Patent number: 9184965
    Abstract: A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits analog signals with HART messages, and a phase coherent FSK demodulator receives and demodulates the analog signals with the HART messages. The FSK modulator is a digital modulator that outputs 1 or 0 for transmission. With oversampling and low pass filtering, the digital modulation results in low jitter and good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access (DMA) to further reduce the power consumption, thereby reducing the overall power consumption by around 50%.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: November 10, 2015
    Assignee: Smart Embedded Systems, Inc.
    Inventor: Pranatharthi Subbaratnam Haran
  • Patent number: 9163959
    Abstract: A position detecting device using a reflection type photosensor, comprising a reflector fitted to a moving target and having reflecting portions and non-reflecting portions arranged alternately in a moving direction of the moving target, a reflection type photosensor having a light emitting element and a light receiving element with plural light receiving portions, and an operation unit for calculating a value indicating the position of the moving target. The light receiving element comprises the first and second light receiving portions outputting signals having different phases, the second light receiving portion is divided into two regions provided at far and near sides from the light emitting element about the first light receiving portion, and the operation unit calculates the value using the one signal calculated from the output signals from the two regions and the output signal from the first light receiving portion.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: October 20, 2015
    Assignee: NEW JAPAN RADIO CO., LTD.
    Inventor: Kazuhito Fukui
  • Patent number: 9157769
    Abstract: A reference point detection light-receiving unit receives light from a reference point detection pattern by first to fifth light-receiving elements. The first to fifth light-receiving elements are arranged in a first direction and outputs first to fifth signals, respectively. A reference signal generation circuit outputs a reference signal that starts at a period where a level of a signal, which is obtained by adding first and second signals, and a level of a signal, which is obtained by adding third and fourth signals, will become equal, and ends at a period where a level of a signal, which is obtained by adding the second and third signals, and a level of a signal, which is obtained by adding fourth and fifth signals, become equal.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: October 13, 2015
    Assignee: MITUTOYO CORPORATION
    Inventor: Akihide Kimura
  • Patent number: 9121733
    Abstract: A position detector, includes: a scale having first and second patterns having respective first and second period; a detector array including elements each detecting energy intensities based on the patterns; a generator configured to generate first and second signals having phases different from each other obtained based on the patterns respectively; and a deriver deriving a position of the array relative to the scale based on the signals, wherein the scale is movable relative to the array; the deriver derives a reference position as a detection element array position relative to the scale based on the signals, performs a first process to derive a array position relative to the scale by a array displacement relative to the reference position is derived based on the first signals, and performs a second process in which a relative array position is derived based on the position derived by the first process.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: September 1, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takurou Asano