Patents by Inventor Kenichi Tamura
Kenichi Tamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9533572Abstract: A control apparatus of a vehicle includes a detector to detect an opening degree of an accelerator, a controller to adjust a reaction force of the accelerator, wherein the controller is configured to increase the reaction force of the accelerator when the accelerator opening degree exceeds a threshold value, a first threshold value corresponding to a first vehicle driving force, and a second threshold value corresponding to a second vehicle driving force that is larger than the first vehicle deriving force, wherein the first threshold value is higher than the second threshold value.Type: GrantFiled: July 31, 2009Date of Patent: January 3, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Shigeyuki Sakaguchi, Masao Shiomi, Kenichi Tamura
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Patent number: 9531476Abstract: An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a multiplexing optical system including a plurality of optical filters used for multiplexing the optical signals, each of which has been emitted from a corresponding one of the plurality of semiconductor lasers, and a substrate on which the optical filters are provided, and a plurality of lenses, each of the lenses being joined to a corresponding one of the plurality of optical filters to condense or collimate an optical signal emitted from a corresponding one of the semiconductor lasers and thereby enable the light signal to enter the optical filter. The plurality of lenses are independent from one another and have a different linear expansion ratio from that of the substrate. Furthermore, the plurality of lenses are not in contact with a second mount on which the substrate is mounted.Type: GrantFiled: November 21, 2014Date of Patent: December 27, 2016Assignee: HITACHI METALS, LTD.Inventor: Kenichi Tamura
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Publication number: 20160294477Abstract: A transmitter and receiver integrated optical sub-assembly includes a housing including a side wall structure and a bottom wall, a transmitter-side optical receptacle and a receiver-side optical receptacle attached to the side wall structure, a second circuit board inserted into the housing, laser diodes and photo diodes arranged on the bottom wall, a transmitter-side optical system that is disposed on the bottom wall and combines optical signals from the laser diodes, a receiver-side optical system that is disposed on the bottom wall and splits an optical signal from the receiver-side optical receptacle, a driver integrated circuit, and an amplifying integrated circuit. In the transmitter and receiver integrated optical sub-assembly, electrodes formed at the other end portion of the second circuit board are connected to the driver integrated circuit and the amplifying integrated circuit.Type: ApplicationFiled: March 23, 2016Publication date: October 6, 2016Inventors: Kenji MIZOBUCHI, Ryuta TAKAHASHI, Kenichi TAMURA
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Publication number: 20160291271Abstract: An optical module includes a first circuit board, an optical sub-assembly, a first flexible printed circuit and a second flexible printed circuit. At first electrical connection terminals and a first electrical connector are provided on the first circuit board. The optical sub-assembly includes a second circuit board that includes second electrical connection terminals and a second electrical connector. The first flexible printed circuit is connected to the first electrical connection terminals and the second electrical connection terminals. The second flexible printed circuit is connected to the first and second electrical connectors. A high-speed electrical signal of 1 GHz or higher is transmitted between both the circuit boards through the first flexible printed circuit, and a power source signal and a low-speed electrical signal of 1 MHz or lower are transmitted between both the circuit boards through the second flexible printed circuit.Type: ApplicationFiled: March 18, 2016Publication date: October 6, 2016Inventors: Kenji MIZOBUCHI, Kenichi Tamura
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Patent number: 9401581Abstract: A jig for handling a CAN-package semiconductor laser having a semiconductor laser mounted on a pedestal, a cap which is put on one surface of the pedestal and covers the semiconductor laser, and a lead pin which is electrically connected to the semiconductor laser and protrudes from the other surface of the pedestal includes: a base part provided with a recessed part to which the pedestal is fitted; a terminal pad provided on a recessed-part bottom surface and being in contact with the lead pin; and a terminal pin electrically connected to the terminal pad and protruding from the base part.Type: GrantFiled: August 26, 2014Date of Patent: July 26, 2016Assignee: Hitachi Metals, Ltd.Inventors: Kenichi Tamura, Yoshinori Sunaga
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Patent number: 9391709Abstract: A multiplexing optical system in an optical transmitter module has first to third wavelength selective filters and a reflection mirror. The reflection mirror reflects a fourth optical signal to make it enter the first wavelength selective filter and reflects a third optical signal to make it enter the third wavelength selective filter. The third wavelength selective filter reflects a second optical signal to make it enter the second wavelength selective filter and transmits the third optical signal to make it enter the second wavelength selective filter. The first wavelength selective filter transmits a first optical signal to make it enter the second wavelength selective filter and reflects the fourth optical signal to make it enter the second wavelength selective filter. The second wavelength selective filter transmits the first and fourth optical signals and reflects the second and third optical signals to make them enter a lens.Type: GrantFiled: April 6, 2015Date of Patent: July 12, 2016Assignee: Hitachi Metals, Ltd.Inventors: Kenichi Tamura, Ryuta Takahashi
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Patent number: 9383011Abstract: A shift position detecting device that determines a shift position based on a detection logic formed of a combination of turning on or off of a plurality of switches that are fixedly arranged at least one by one at positions corresponding to a plurality of detecting object portion rows mounted on a shift drum. An accurate shift position can be detected even if there is an irregularity in switching timings of switching modes of the plurality of switches. A shift position detecting member establishes the shift position as a new shift position and outputs shift position information, while when the detection logic after the transition is a detection logic other than the detection logic corresponding to the changeable shift position, sets the new shift position not yet established and outputs information corresponding to non-establishment of the shift position.Type: GrantFiled: June 3, 2014Date of Patent: July 5, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Takashi Tetsuka, Takashi Hotei, Dai Arai, Atsushi Chiba, Kenichi Tamura
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Publication number: 20160147017Abstract: An optical module is composed of a plurality of optical elements to emit or receive light rays having wavelengths different from each other, and a plurality of optical members arranged in correspondence with the plurality of optical elements respectively. The plurality of optical members each of which includes a mirror section to transmit a predetermined transmission band wavelength light ray while reflecting a predetermined reflection band wavelength light ray, and a lens section located opposite the corresponding optical element. The plurality of optical members are positioned and disposed in such a manner that the respective lens sections thereof collimate or converge the light rays to be emitted or received by the plurality of optical elements respectively, while the respective mirror sections thereof multiplex or demultiplex the light rays to be emitted or received by the plurality of optical elements respectively.Type: ApplicationFiled: November 17, 2015Publication date: May 26, 2016Applicant: Hitachi Metals, Ltd.Inventor: Kenichi TAMURA
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Patent number: 9274294Abstract: An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a plurality of first mounts each including a first mounting surface on which a corresponding one of the semiconductor lasers is mounted and a first side surface that intersects with the first mounting surface, a second mount including a second mounting surface on which a lens array that collimates an optical signal emitted from a corresponding one of the plurality of semiconductor lasers and a multiplexing optical system that multiplexes the plurality of optical signals that have been collimated by the lens array and a second side surface that intersects with the second mounting surface. Each of the first mounts is fixed to the second mount in a state where a corresponding one of the semiconductor lasers is aligned with the lens array and the first side surface abuts the second side surface.Type: GrantFiled: November 21, 2014Date of Patent: March 1, 2016Assignee: Hitachi Metals, Ltd.Inventor: Kenichi Tamura
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Publication number: 20150346433Abstract: A multiplexing optical system in an optical transmitter module has first to third wavelength selective filters and a reflection mirror. The reflection mirror reflects a fourth optical signal to make it enter the first wavelength selective filter and reflects a third optical signal to make it enter the third wavelength selective filter. The third wavelength selective filter reflects a second optical signal to make it enter the second wavelength selective filter and transmits the third optical signal to make it enter the second wavelength selective filter. The first wavelength selective filter transmits a first optical signal to make it enter the second wavelength selective filter and reflects the fourth optical signal to make it enter the second wavelength selective filter. The second wavelength selective filter transmits the first and fourth optical signals and reflects the second and third optical signals to make them enter a lens.Type: ApplicationFiled: April 6, 2015Publication date: December 3, 2015Inventors: Kenichi TAMURA, Ryuta TAKAHASHI
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Publication number: 20150346432Abstract: An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a multiplexing optical system including a plurality of optical filters used for multiplexing the optical signals, each of which has been emitted from a corresponding one of the plurality of semiconductor lasers, and a substrate on which the optical filters are provided, and a plurality of lenses, each of the lenses being joined to a corresponding one of the plurality of optical filters to condense or collimate an optical signal emitted from a corresponding one of the semiconductor lasers and thereby enable the light signal to enter the optical filter. The plurality of lenses are independent from one another and have a different linear expansion ratio from that of the substrate. Furthermore, the plurality of lenses are not in contact with a second mount on which the substrate is mounted.Type: ApplicationFiled: November 21, 2014Publication date: December 3, 2015Inventor: Kenichi TAMURA
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Publication number: 20150349489Abstract: A jig for handling a CAN-package semiconductor laser having a semiconductor laser mounted on a pedestal, a cap which is put on one surface of the pedestal and covers the semiconductor laser, and a lead pin which is electrically connected to the semiconductor laser and protrudes from the other surface of the pedestal includes: a base part provided with a recessed part to which the pedestal is fitted; a terminal pad provided on a recessed-part bottom surface and being in contact with the lead pin; and a terminal pin electrically connected to the terminal pad and protruding from the base part.Type: ApplicationFiled: August 26, 2014Publication date: December 3, 2015Inventors: Kenichi TAMURA, Yoshinori SUNAGA
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Publication number: 20150346442Abstract: An optical communication module includes a plurality of semiconductor lasers that emit optical signals with different wavelengths, a plurality of first mounts each including a first mounting surface on which a corresponding one of the semiconductor lasers is mounted and a first side surface that intersects with the first mounting surface, a second mount including a second mounting surface on which a lens array that collimates an optical signal emitted from a corresponding one of the plurality of semiconductor lasers and a multiplexing optical system that multiplexes the plurality of optical signals that have been collimated by the lens array and a second side surface that intersects with the second mounting surface. Each of the first mounts is fixed to the second mount in a state where a corresponding one of the semiconductor lasers is aligned with the lens array and the first side surface abuts the second side surface.Type: ApplicationFiled: November 21, 2014Publication date: December 3, 2015Inventor: Kenichi TAMURA
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Publication number: 20150300614Abstract: An optical communication module includes: a plurality of semiconductor lasers which emit optical signals each having different wavelengths; a plurality of driver ICs which drive each of the plurality of semiconductor lasers; and a substrate on which both of the semiconductor lasers and the driver ICs are mounted. The semiconductor lasers are mounted on a first surface of the substrate and the driver ICs are mounted on a second surface of the substrate opposite to the first surface.Type: ApplicationFiled: July 25, 2014Publication date: October 22, 2015Inventors: Kenichi TAMURA, Ryuta TAKAHASHI, Yoshinori SUNAGA
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Patent number: 9053652Abstract: A display control device includes a cabinet, a detection unit configured to detect an orientation of the cabinet, a display screen, and a display control unit configured to control display of the display screen in accordance with the orientation of the cabinet detected by the detection unit.Type: GrantFiled: December 31, 2009Date of Patent: June 9, 2015Assignee: Sony CorporationInventors: Kenichi Tamura, Ikuya Sano, Yasushi Itoshiro, Yoshio Ito, Yoshiyuki Nida
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Patent number: 8984904Abstract: A refrigerating device is provided which can improve COP when a required load is 50% of a maximum load or below. When the load required of a common evaporator is 50% or less, a control unit stops a second compressor and controls the volume of a first compressor. Accordingly, it becomes possible to improve COP when the required load is equal to or below 50% as compared to the case of controlling the first and second compressors simultaneously to a low volume.Type: GrantFiled: August 18, 2009Date of Patent: March 24, 2015Assignee: Daikin Industries, Ltd.Inventors: Kenichi Tamura, Yasuhiro Kondou
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Patent number: 8936405Abstract: A multi-channel optical receiver module, includes a light-receiving element array, the light-receiving element array including multiple light-receiving elements; an amplifier disposed adjacent the light-receiving element array, the amplifier amplifying an output of a light-receiving element; a wiring relay submount disposed adjacent the amplifier; two wires for carrying a differential signal and being wired in parallel to one another and being connected between the wiring relay submount and the amplifier; an output pin; and another wire, the another wire being connected between the output pin and the wiring relay submount.Type: GrantFiled: March 13, 2007Date of Patent: January 20, 2015Assignee: Hitachi Metals, Ltd.Inventors: Kenichi Tamura, Masahiko Kobayashi
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Publication number: 20150000448Abstract: A shift position detecting device that determines a shift position based on a detection logic formed of a combination of turning on or off of a plurality of switches that are fixedly arranged at least one by one at positions corresponding to a plurality of detecting object portion rows mounted on a shift drum. An accurate shift position can be detected even if there is an irregularity in switching timings of switching modes of the plurality of switches. A shift position detecting member establishes the shift position as a new shift position and outputs shift position information, while when the detection logic after the transition is a detection logic other than the detection logic corresponding to the changeable shift position, sets the new shift position not yet established and outputs information corresponding to non-establishment of the shift position.Type: ApplicationFiled: June 3, 2014Publication date: January 1, 2015Inventors: Takashi TETSUKA, Takashi HOTEI, Dai ARAI, Atsushi CHIBA, Kenichi TAMURA
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Patent number: 8905442Abstract: A latch structure according to an embodiment includes a cage having an engagement hole, a connector attachably and detachably held in the cage, the connector comprising a connector body having an almost rectangular parallelepiped shape and an insertion part to be inserted into the cage formed on an end surface of the connector body, a latch cover rockably installed in an upper surface of the connector body, being formed of a single plate material and having a cover body for covering the upper surface of the connector body, an engagement claw to engage with the engagement hole of the cage formed at an end portion of the latch cover, a spring member for always energizing the latch cover so that the engagement claw engages with the engagement hole, a rocking member formed in both sides of the cover body of the latch cover and formed by bending the plate material downward and a rocking groove formed in both side surfaces of the connector body for rockably engaging with the rocking member, wherein the rocking membType: GrantFiled: December 21, 2009Date of Patent: December 9, 2014Assignee: Hitachi Metals, Ltd.Inventors: Yoshiaki Ishigami, Kenichi Tamura, Masayuki Nikaido
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Patent number: 8669515Abstract: A photoelectric conversion module includes a transmission side photoelectric conversion part for converting an electrical signal into an optical signal, a transmission side circuit board on which the transmission side photoelectric conversion part is mounted on a top surface side of the transmission side circuit board, a reception side photoelectric conversion part for converting an optical signal into an electrical signal, a reception side circuit board on which the reception side photoelectric conversion part is mounted on a top surface side of the reception side circuit board, and a housing. The transmission side circuit board and the reception side circuit board are placed such that a back surface of the transmission side circuit board is opposite to the housing and a back surface of the reception side circuit board is opposite to the housing.Type: GrantFiled: July 20, 2010Date of Patent: March 11, 2014Assignee: Hitachi Cable, Ltd.Inventors: Yoshiaki Ishigami, Kenichi Tamura, Masayuki Nikaido