Patents by Inventor Toshihiro Fujita

Toshihiro Fujita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9573622
    Abstract: A rotational angle detecting device continues a portion of operation by electric power from a battery when an electric switch is off. The rotational angle detecting device includes a sensor, a first calculator, a second calculator and a communication portion. The sensor detects a detection value that is variable according to a rotation of a detection object. The first calculator starts calculating first rotational information associated with the rotation of the detection object based on the detection value when the electric switch is turned on. The first calculator stops calculating the first rotational information when the electric switch is turned off. The second calculator calculates second rotational information associated with the rotation of the detection object regardless of an on/off state of the electric switch, based on the detection value. The communication portion outputs the first rotational information and the second rotational information to a controller.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: February 21, 2017
    Assignee: DENSO CORPORATION
    Inventors: Toshihiro Fujita, Takaharu Kozawa, Takashi Suzuki
  • Patent number: 9543810
    Abstract: A semiconductor module includes a switching element, a molded body, and a motor terminal. The molded body having the switching element disposed therein. The motor terminal has a base portion and a connection portion having an insertion hole into which a motor wire is inserted and connected with the winding wire. The connection portion has a cutaway region that defines a slot. The winding wire of the motor and the semiconductor module are connected via the motor wire and the motor terminal, thereby reducing the number of components used for such connection compared with a connection that uses a connector, and achieving a volume reduction of the semiconductor module and a driver device using the same.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: January 10, 2017
    Assignee: DENSO CORPORATION
    Inventors: Mikihiro Hiramine, Toshihiro Fujita
  • Publication number: 20160339958
    Abstract: A rotation angle detector includes a voltage detector receiving a supply of voltage from a first power source and detecting a motor rotation regarding a motor, the motor rotation more specifically detected as (i) a rotation angle of the motor and (ii) a number of rotations of the motor. Also, a second power source is disposed separately from the first power source and supplying voltage to the voltage detector. Thus, even when the voltage of the in-vehicle battery lowers or the voltage supply therefrom is interrupted, the voltage supply to a voltage detector is continuous from the power storage device, thereby enabling a continuous detection of the rotation angle and the rotation number of the motor.
    Type: Application
    Filed: May 18, 2016
    Publication date: November 24, 2016
    Inventors: Toshihiro Fujita, Hideki Kabune
  • Publication number: 20160294539
    Abstract: A communication device includes: a plurality of sensors, each of which includes at least one sensor element that detects information relating to a single detection target and an output circuit that generates an output signal based on a detection signal of the sensor element and transmits the output signal; and a controller that acquires the output signal. One of the sensors transmits the output signal to the controller at an output timing that is shifted, by a predetermined period shorter than a length of one period of the output signal, from another output timing when another one of the sensors transmits the output signal.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 6, 2016
    Inventors: Takaharu Kozawa, Hideki Kabune, Toshihiro Fujita, Katsuhiko Hayashi, Kouichi Nakamura, Shuji Kuramitsu, Toshimitsu Sakai, Masaya Taki
  • Publication number: 20160223363
    Abstract: A rotation angle detection apparatus includes three or more sensing portions and a controller. Each sensing portion includes a main circuit unit which is a full-bridge circuit and a subsidiary circuit unit which is a full-bridge circuit. An angle calculator of the controller calculates a rotation angle on the basis of a main signal corresponding to a main positive signal and a main negative signal outputted from at least one main circuit unit and a subsidiary signal corresponding to a subsidiary positive signal and a subsidiary negative signal outputted from at least one subsidiary circuit unit. An abnormality monitoring unit compares main signals and also compares subsidiary signals outputted from different sensing portions and monitors an abnormality occurrence according to a comparison result. A rotation angle can be thus detected with high accuracy.
    Type: Application
    Filed: January 27, 2016
    Publication date: August 4, 2016
    Inventors: Toshihiro Fujita, Toshimitsu Sakai
  • Patent number: 9196561
    Abstract: A semiconductor device includes a semiconductor module and a pressing member pressing the semiconductor module to a heat radiation member. The semiconductor module includes heat generation elements generating heat by energization, three or more conductive members each of which mounted with at least one of the heat generation elements, and a molding part integrally molding the heat generation elements and the conductive members. The semiconductor module has a heat radiation possible region in which a forcing pressure by the pressing member is equal to or greater than a predetermined pressure. The conductive member mounted with the heat generation element disposed outside the heat radiation possible region has such a shape that at least a part of the conductive member is included in the heat radiation possible region.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: November 24, 2015
    Assignee: DENSO CORPORATION
    Inventor: Toshihiro Fujita
  • Patent number: 9123711
    Abstract: A wiring member includes a first leg portion, a second leg portion, a third leg portion, a first connecting wall and a second connecting wall. The first leg portion is electrically connected to a first conductive portion. The second leg portion is electrically connected to a second conductive portion. The third leg portion is electrically connected to a third conductive portion. The first connecting wall connects the first leg portion and the second leg portion. The second connecting wall connects the second leg portion and the third leg portion. The first leg portion, the second leg portion, and the third leg portion are non-linearly arranged.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: September 1, 2015
    Assignee: DENSO CORPORATION
    Inventors: Toshihiro Fujita, Hiroyasu Kidokoro, Hiromasa Hayashi
  • Publication number: 20150239501
    Abstract: A rotational angle detecting device continues a portion of operation by electric power from a battery when an electric switch is off. The rotational angle detecting device includes a sensor, a first calculator, a second calculator and a communication portion. The sensor detects a detection value that is variable according to a rotation of a detection object. The first calculator starts calculating first rotational information associated with the rotation of the detection object based on the detection value when the electric switch is turned on. The first calculator stops calculating the first rotational information when the electric switch is turned off. The second calculator calculates second rotational information associated with the rotation of the detection object regardless of an on/off state of the electric switch, based on the detection value. The communication portion outputs the first rotational information and the second rotational information to a controller.
    Type: Application
    Filed: February 25, 2015
    Publication date: August 27, 2015
    Inventors: Toshihiro FUJITA, Takaharu KOZAWA, Takashi SUZUKI
  • Publication number: 20150239496
    Abstract: A rotational angle detecting device has a detecting element that detects a rotating magnetic field of a magnet that is variable according to a rotation of a motor. A rotational angle calculator calculates a rotational angle and a rotation number. A power supply failure determining circuit has a volatile memory that stores power supply failure information indicating that power supply failure occurs in which electric power is not supplied to the rotational angle detecting device from a battery. A communication portion outputs the rotational information and output information corresponding to the power supply failure information to the controller. The communication portion receives a notifying signal after the controller receives the output information indicating that the power supply failure occurs. The volatile memory stores the power supply failure information indicating that the power supply failure occurs after the power supply failure occurs until the communication portion receives the notifying signal.
    Type: Application
    Filed: February 25, 2015
    Publication date: August 27, 2015
    Inventors: Takaharu KOZAWA, Toshihiro FUJITA
  • Publication number: 20150155763
    Abstract: A driver device has a semiconductor module in which a motor terminal extends from a molded body and is connected to a motor wire. A heat sink of the driver device has a module mounting surface, which extends axially outward from an axial end of the motor section, on which the semiconductor module is fastened. The motor terminal includes a base region on a molded body side of a bend location and an extension region on a tip side of the bend location. The extension region has a connection portion on which an insertion hole receives the motor wire. A terminal angle between the extension region and a perpendicular line perpendicular to the motor wire is greater than zero degree. As such, the volume of the driver device is reduced.
    Type: Application
    Filed: November 25, 2014
    Publication date: June 4, 2015
    Inventors: Mikihiro HIRAMINE, Masashi YAMASAKI, Toshihiro FUJITA
  • Publication number: 20150155762
    Abstract: A semiconductor module includes a switching element, a molded body, and a motor terminal. The molded body having the switching element disposed therein. The motor terminal has a base portion and a connection portion having an insertion hole into which a motor wire is inserted and connected with the winding wire. The connection portion has a cutaway region that defines a slot. The winding wire of the motor and the semiconductor module are connected via the motor wire and the motor terminal, thereby reducing the number of components used for such connection compared with a connection that uses a connector, and achieving a volume reduction of the semiconductor module and a driver device using the same.
    Type: Application
    Filed: November 25, 2014
    Publication date: June 4, 2015
    Inventors: Mikihiro HIRAMINE, Toshihiro FUJITA
  • Patent number: 9006883
    Abstract: In a semiconductor module, an upper arm switching element is integrated to a high-potential conductor coupled to a high-potential electrode of a power source, and a lower arm switching element is integrated to a load conductor coupled to a load. A first connecting conductor has a first end connected to the upper arm switching element and a second end connected to the load conductor. A second connecting conductor has a first end connected to the lower arm switching element and a second end connected to a low-potential conductor coupled to a low-potential electrode of the power source. At least one of the first connecting conductor and the second connecting conductor serves as a shunt resistor for detecting an electric current flowing in the at least one.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: April 14, 2015
    Assignee: Denso Corporation
    Inventors: Toshihiro Fujita, Hiroyasu Kidokoro, Hiromasa Hayashi
  • Publication number: 20150035136
    Abstract: A semiconductor device includes a semiconductor module and a pressing member pressing the semiconductor module to a heat radiation member. The semiconductor module includes heat generation elements generating heat by energization, three or more conductive members each of which mounted with at least one of the heat generation elements, and a molding part integrally molding the heat generation elements and the conductive members. The semiconductor module has a heat radiation possible region in which a forcing pressure by the pressing member is equal to or greater than a predetermined pressure. The conductive member mounted with the heat generation element disposed outside the heat radiation possible region has such a shape that at least a part of the conductive member is included in the heat radiation possible region.
    Type: Application
    Filed: July 24, 2014
    Publication date: February 5, 2015
    Inventor: Toshihiro FUJITA
  • Patent number: 8781301
    Abstract: An information processing apparatus includes an obtaining unit, a specifying unit, a search processing unit, and an output unit. The obtaining unit obtains at least one content including a sound. The specifying unit receives a specification for specifying sound information, the sound information being in relation with an icon symbolizing a scene content and expressing the scene content, as a scene search condition. The search processing unit compares the sound information, the specification for specifying the sound information being received as the scene search condition, with the sound included in the at least one content, to thereby search a content including the sound information in the sound. The output unit outputs information on the content searched by the search processing unit.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: July 15, 2014
    Assignee: Sony Corporation
    Inventor: Toshihiro Fujita
  • Patent number: 8680726
    Abstract: A semiconductor device includes a semiconductor module and a pressing member configured to press the semiconductor module to a heat radiation member. The semiconductor module includes switching elements, conductors, and a molded member. Each of the switching elements is mounted on a corresponding one of the conductors. The molded member covers the switching elements and the conductors. More than three of the switching elements are disposed around the pressing member. The switching elements are disposed in a region in which a pressure generated between the semiconductor module and the heat radiation member by pressing with the pressing member is greater than or equal to a predetermined pressure with which heat generated from the switching elements is releasable from the semiconductor module to the heat radiation member.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 25, 2014
    Assignee: Denso Corporation
    Inventor: Toshihiro Fujita
  • Patent number: 8649159
    Abstract: A controller has a control board, a power module and a power board. MOS transistors, inverter input terminals, coil terminals, inverter ground terminals, control terminals, a control power input terminal and a control ground terminal are integrally molded in a molded portion of a power module. Electrical connections between the power module and the control and power boards are made through the terminals provided in the molded portion.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: February 11, 2014
    Assignee: Denso Corporation
    Inventors: Toshihiro Fujita, Hiroyasu Kidokoro, Hiromasa Hayashi
  • Publication number: 20130329416
    Abstract: A lighting apparatus includes a laser lighting module, an LED lighting module, and a sensor module. The laser lighting module includes a base part, a laser diode mounted on a substrate fixed on the base part, a ceramic phosphor upon which a blue laser light from the laser diode is incident, and a lens for adjusting luminous intensity distribution of light emitted from the ceramic phosphor, and is mounted on a module mount part of a mount body part. The LED lighting module and the sensor module are also mounted on other module mount parts of the mount body part, respectively. Thus, by mounting various combinations of the laser lighting modules and the LED lighting modules on the mount body part provided with a plurality of module mount parts, it is possible to manufacture lighting apparatuses for various uses at low cost.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 12, 2013
    Inventors: Hirokazu SHIMIZU, Tetsuo TANIUCHI, Toshihiro FUJITA, Jun TOKUDA, Shigeo MAEDA, Shigetoshi FUJITANI, Hisataka ITO, Hiroyuki KATAYAMA
  • Publication number: 20130329397
    Abstract: A laser lighting module includes a base part, a laser diode which is a blue laser device, a substrate with which the laser diode is in contact, a ceramic phosphor which reflects light entering from the laser diode to thereby change a direction of the light and is excited by the light to generate yellow fluorescence, and a lens for adjusting luminous intensity distribution of light emitted from the ceramic phosphor. The substrate is formed of a material which is thin and has excellent thermal conductivity, and is in surface contact with the laser diode and the base part. In the laser lighting module, since the substrate serves as a device heat radiator, it is possible to easily remove the heat generated by the laser diode.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 12, 2013
    Inventors: Hirokazu SHIMIZU, Tetsuo TANIUCHI, Toshihiro FUJITA, Jun TOKUDA, Shigeo MAEDA, Hisataka ITO, Hiroyuki KATAYAMA
  • Publication number: 20130307129
    Abstract: A wiring member includes a first leg portion, a second leg portion, a third leg portion, a first connecting wall and a second connecting wall. The first leg portion is electrically connected to a first conductive portion. The second leg portion is electrically connected to a second conductive portion. The third leg portion is electrically connected to a third conductive portion. The first connecting wall connects the first leg portion and the second leg portion. The second connecting wall connects the second leg portion and the third leg portion. The first leg portion, the second leg portion, and the third leg portion are non-linearly arranged.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Applicant: DENSO CORPORATION
    Inventors: Toshihiro FUJITA, Hiroyasu KIDOKORO, Hiromasa HAYASHI
  • Patent number: 8564996
    Abstract: In a semiconductor module, a high-potential side conductor includes a wide section on which the high-potential side switching element is mounted, a high-potential side terminal coupled with a high potential source, and a narrow section extending from the wide section to the high-potential side terminal in a first direction. The wide section is wider than the narrow section in a second direction perpendicular to the first direction. The wide section has a first side and a second side opposite to the first side in the second direction. A distance between the first side of the wide section and a low-potential side conductor is shorter than a distance between the second side of the wide section and the low-potential side conductor. The narrow section extends from a portion of the wide section closer to the first side than the second side.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: October 22, 2013
    Assignee: Denso Corporation
    Inventors: Takashi Masuzawa, Toshihiro Fujita, Hiroshi Taki