Patents Assigned to Mitsumi Electric Co., Ltd.
  • Publication number: 20200225340
    Abstract: The radar device comprises: a transmission unit that transmits, to an object, a transmission wave; a reception unit that receives a reflected wave, and generates a reception signal; and an object detection unit that acquires information relating to the object on the basis of the transmission signal and the reception signal. The object detection unit calculates, for each of a plurality of detection points within the same object: an azimuth angle ? indicating the azimuth of the detection point with respect to the radar device; and a velocity component V(?) of the relative velocity A of the object along the azimuth. The object detection unit derives a relational expression for the azimuth angle ? and the velocity component V(?), and derives a movement angle ? (=?/2??) indicating the movement direction of the object from the azimuth angle ? when V(?)=0.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 16, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Masanobu FUJII
  • Patent number: 10715022
    Abstract: The purpose of the present invention is to provide an actuator that has a simple configuration and can stably achieve high output without the occurrence of magnetic saturation. This actuator has: a movable body provided with a cylindrical magnet section having alternately N-pole faces and S-pole faces on the peripheral surface surrounding a rotation shaft; and a fixed body provided with, pole tooth surfaces of the same number as the N-pole faces and the S-pole faces, and a coil that excites the pole tooth sections. The movable body has as a turning reference position a position at which the center of the pole tooth surfaces in the circumferential direction and the switching position of the pole faces of the magnet section face each other, and is held to the fixed body so as to be turnable back and forth around the rotation shaft in the circumferential direction.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: July 14, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuki Takahashi, Masami Kamijo, Kazutaka Sakaguchi, Yasutaka Kitamura, Masaharu Kagami, Shigenori Inamoto
  • Patent number: 10715023
    Abstract: The purpose of the present invention is to provide a vibratory actuator the size of which can be reduced and which effectively produces vibrations felt by a user. The vibratory actuator has: a stationary body which has a curved surface section curved in a concave shape to be placed along the skin; and a movable body which is disposed on the curved surface section so as to be able to move with respect to the stationary body in a reciprocating manner along the curved surface section, thereby imparting a vibratory stimulus caused by the reciprocating motion to mechanoreceptors in the skin tissue via the curved surface section.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 14, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuki Takahashi, Chikara Sekiguchi, Kazutaka Sakaguchi, Yasutaka Kitamura, Masaharu Kagami, Shigenori Inamoto
  • Patent number: 10711775
    Abstract: A compact pump includes a case, a diaphragm assembly disposed in the case at an upper position and includes diaphragm units which form respective pump chambers, and a swing body disposed in the case at a lower position and moves the plural diaphragm units in the top-bottom direction. The diaphragm assembly has intake valve elements for opening and closing respective air introduction holes. An upper cover of the case has an exhaust hole and ring-shaped recesses. The upper cover has tubular inner wall surfaces defining the respective ring-shaped recesses. The diaphragm assembly includes tubular exhaust valve elements which are disposed in the respective ring-shaped recesses so as to contact the plural respective tubular inner wall surfaces and a rib which is disposed at its center in the vicinity of the exhaust hole and connects center-side outer wall surfaces of the tubular exhaust valve elements.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 14, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Tomoyuki Hashimoto
  • Publication number: 20200209616
    Abstract: A light scanning apparatus includes a mirror supporting portion having a mirror on a front surface, an actuator configured to driving the mirror supporting portion, a fixed frame disposed around the mirror supporting portion and the actuator, and at least one rib disposed on a back surface side of the mirror supporting portion or the actuator, wherein the rib includes a straight portion and a contact portion having a width wider than a width of the straight portion.
    Type: Application
    Filed: October 7, 2019
    Publication date: July 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Akira TAKAHASHI
  • Publication number: 20200209617
    Abstract: An optical scanning apparatus that oscillates a mirror in at least one direction, includes a mirror driving circuit including a digital-to-analog converter and an amplifier and generating a pair of driving signals for driving the mirror based on digital driving waveform data, a reference waveform data generator generating a reference waveform data, and an offset setting circuit setting an offset value of the reference waveform data, based on a dead band of the amplifier and a periodic integral non-linearity error of the digital-to-analog converter, to generate the driving waveform data.
    Type: Application
    Filed: November 1, 2019
    Publication date: July 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuji KIMURA, Riichiro HIBIYA
  • Patent number: 10699672
    Abstract: The invention has an object to provide a display device that enables a user to obtain information from a projection image without losing information obtained from the surrounding environment. The display device is to be mounted on a head of the user for allowing the user to view a predetermined image, and includes a light quantity detector (17) to detect a quantity of external light; a laser (211R, 211G, 211B) to emit a laser light having a light quantity depending on a current value; a light attenuator (22) including filters to switch an attenuation ratio so as to attenuate the laser light; an optical scanner (15) to scan the laser light transmitted through the filter; an optical projection system (16) to project the scanned laser light to form an image; and a controller (27) to control brightness of the image by increasing or decreasing the current value and by switching the attenuation ratio of the filter, based on the light quantity of the external light detected by the light quantity detector.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 30, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Yuji Kimura
  • Publication number: 20200201030
    Abstract: An optical scanning device includes a mirror that includes a mirror reflection surface, a driving part that drives the mirror, and a fixed frame that supports the mirror via the driving part. The fixed frame includes one or more inspection patterns that are formed while at least one of the mirror and the driving part is formed.
    Type: Application
    Filed: November 6, 2019
    Publication date: June 25, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Yasuyuki SUDO
  • Publication number: 20200201029
    Abstract: An optical scanning device includes a mirror that includes a mirror reflection surface, and torsion bars that support the corresponding sides of the mirror and cause the mirror to rotate. The torsion bars are formed of a silicon active layer whose surface is exposed.
    Type: Application
    Filed: December 4, 2019
    Publication date: June 25, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Yuki MARUYAMA
  • Patent number: 10684532
    Abstract: This lens-driving device is provided with: a shake correction drive unit which, utilizing the drive power of a voice coil motor, causes a moveable shake correction unit that includes a shake correction magnet unit to oscillate within a plane orthogonal to the optical axis with respect to a stationary shake correction unit that includes a shake correction magnet unit, in order to carry out shake correction; and a plurality of suspension wires for supporting the moveable shake correction unit with respect to the stationary shake correction unit. The moveable shake correction unit has a retaining member for retaining the shake correction magnet unit, and the retaining member has a wire passage part recessed inwardly in the diametrical direction and formed to have an inside diameter at the bottom which is larger than the inside diameter at the top, a suspension wire being arranged in the retaining member.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: June 16, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Shota Kudo
  • Publication number: 20200185937
    Abstract: A secondary-battery protection circuit is configured to, in response to detecting that a first switching circuit is turned on and a second switching circuit is turned on, supply a first output voltage to a first load between a first terminal and a second terminal; and supply a third output voltage to a second load between the first terminal and a third terminal, the third output voltage indicating the sum of the first output voltage and a second output voltage, the second output voltage corresponding to a voltage across a second secondary battery. In response to detecting that the first switching circuit is turned off and the second switching circuit is turned on, the secondary-battery protection circuit is configured to stop supplying the first output voltage to the first load; and stop supplying the third output voltage via the first terminal and the third terminal.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 11, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takeshi YAMAGUCHI, Yoshihiro MOTOICHI, Junji TAKESHITA
  • Publication number: 20200174270
    Abstract: This camera actuator comprises: an optical path bending member; a lens unit disposed at a subsequent stage of the optical path bending member; a first actuator that is disposed near the optical path bending member and displaces the optical path bending member; and a second actuator and a third actuator that are disposed near the lens unit so as to be apart from each other in a first direction, and that respectively displace the lens unit in a second direction and a third direction that are orthogonal to the first direction and orthogonal to each other. As a result, the present invention provides a camera actuator capable of improving the degree of freedom of design around the optical path bending member.
    Type: Application
    Filed: May 24, 2018
    Publication date: June 4, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yohei ENTA, Masahiro SAITO, Kazutaka GOAMI, Hiroshi MATSUDA
  • Publication number: 20200174219
    Abstract: A camera module comprises: an AF driving part, a shake-correcting driving part, a first position detection part, a second position detection part, and a drive control part configured to perform driving control of the AF driving part based on detection results of the first position detection part and the second position detection part. The drive control part includes a correction part configured to correct the position of the AF movable part in the optical axis direction that is calculated based on the detection result of the first position detection part in accordance with preliminarily set correction data. The correction part corrects the detection result of the first position detection part in consideration of displacement of the AF movable part in the optical axis direction due to sway of the shake correction movable part.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Masayoshi SUGAWARA
  • Patent number: 10654708
    Abstract: The present invention is to provide an optical scanner module capable of reducing cross-talk generated between a sensor interconnect and a drive interconnect.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 19, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tsukasa Yamada, Takahiro Wakasugi, Shinobu Kasahara
  • Patent number: 10649174
    Abstract: Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. A shake-correcting fixing part includes a coil board consisting of a multilayer printed wiring board in which multiple unit layers consisting of a conductor layer and an insulating layer are stacked on one another, and a base on which the coil board is placed. A shake-correcting coil part, an external terminal, and a conductor pattern including a power-supply line configured to connect the external terminal to the shake-correcting coil part are integrally formed in the coil board.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: May 12, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tomohiko Osaka, Atsushi Kikuchi
  • Patent number: 10641884
    Abstract: A radar transceiver (100) includes: a transmission-signal forming section (110) that forms an upbeat signal and a downbeat signal from a carrier signal and a chirp signal, using an image rejection circuit; and a received-signal processing section (120) that separates a reflection signal received via a reception antenna (105) into a reflection signal based on the upbeat signal and a reflection signal based on the downbeat signal, using an image rejection circuit.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: May 5, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Yuji Takada
  • Publication number: 20200136169
    Abstract: An electronic apparatus includes a secondary battery; a touch panel; a deformation amount detector configured to detect a deformation amount of the secondary battery; a touch determination unit configured to determine whether the touch panel is in a touch state; and a state determination unit configured to determine a state of the secondary battery using the deformation amount detected by the deformation amount detector when the touch panel is in the non-touch state based on a determination result of the touch determination unit.
    Type: Application
    Filed: September 4, 2019
    Publication date: April 30, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tetsu NISHIDA, Takatoshi ITAGAKI, Noriyuki WAINAI, Yasuhiro KINOSHITA
  • Publication number: 20200136200
    Abstract: An electronic apparatus includes a secondary battery, a deformation amount detector configured to detect a deformation amount of the secondary battery, a full charge detector configured to detect a full charge of the secondary battery, a stable state detector configured to detect a stable state after a full charge is detected by the full charge detector, and a state determination unit configured to determine a state of the secondary battery using the deformation amount detected by the deformation amount detector when the stable state is detected by the stable state detector.
    Type: Application
    Filed: September 4, 2019
    Publication date: April 30, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Tetsu NISHIDA, Takatoshi ITAGAKI, Noriyuki WAINAI, Yasuhiro KINOSHITA
  • Publication number: 20200136315
    Abstract: An electrical connector 1 contains a plurality of contacts 31, a first ground plate 32L and a second ground plate 32R facing the plurality of contacts 31 and arranged so as to be separated from each other in a ground plane parallel to the at least one plane in which the plurality of contacts 31 are arranged and an insulator 33 for holding the plurality of contacts 31, the first ground plate 32L and the second ground plate 32R in a state that the plurality of contacts 31, the first ground plate 32L and the second ground plate 32R are insulated from each other. Both of the first ground plate 32L and the second ground plate 32R include an extending portion extending from one of the first ground plate 32L and the second ground plate 32R toward the other one of the first ground plate 32L and the second ground plate 32R in the ground plane.
    Type: Application
    Filed: October 30, 2019
    Publication date: April 30, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventor: Tetsuya TANAKA
  • Publication number: 20200127571
    Abstract: Disclosed is a semiconductor device for switching power supply control including: a power supply terminal; a current inflow terminal; a starting circuit; and a brownout detection circuit, wherein a control signal of a switching element is generated, the starting circuit includes: a first comparator; a starting control circuit which controls on and off of the switch; and an operation start circuit which detects that the voltage of the power supply terminal becomes equal to or more than a predetermined voltage, and generates a signal for operating an internal circuit, and the brownout detection circuit includes: a voltage divider; a second comparator which has a hysteresis characteristic for detecting generation of a brownout state; a timer circuit which measures a predetermined time during which the generation of the brownout state continues; and an output stop circuit which stops outputting of a switching control signal.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 23, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Hiroki MATSUDA, Satoshi ARIMA