Patents by Inventor Toshiyuki Ishikawa

Toshiyuki Ishikawa 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: 10333499
    Abstract: A signal transmission circuit which transmits N (N is a natural number of 2 or more) input signals includes a transmission signal generation portion, 2N transmission portions and an output portion. The transmission signal generation portion generates 2N transmission signals according to the N input signals. The 2N transmission portions respectively transmit the 2N transmission signals output from the transmission signal generation portion while performing electrical insulation. The output portion generates and outputs, based on the 2N transmission signals transmitted by the 2N transmission portions, N output signals that respectively indicate the N input signals. The transmission signal generation portion generates a pulse according to the N input signals and incorporates the pulse in only one of the 2N transmission signals at the same time.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 25, 2019
    Assignee: Rohm Co., Ltd.
    Inventors: Toshiyuki Ishikawa, Daiki Yanagishima, Yoshizo Osumi
  • Patent number: 10161458
    Abstract: To provide a structure for coupling a rotary actuator to a driven body whereby vibration and noise are reduced and assembly, disassembly, and maintenance after attachment to another device are made easy. This structure comprises the following: support parts laid out opposite a frame; a driven body positioned between said support parts; a shaft that holds said driven body and acts as a rotary shaft; and a rotary actuator coupled to said shaft. One end of the shaft is rotatably supported by one of the support parts, and the other end of the shaft is supported by being coupled to the rotary actuator through the opposing frame by being fitted into a tubular recess formed in the output shaft of the rotary actuator. A protrusion that is formed on the rotary actuator and cushioned in the direction of rotation is fitted into an engagement hole in the frame so as to affix the rotary actuator to the frame.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: December 25, 2018
    Assignee: Oki Micro Engineering Company Limited
    Inventors: Toshiyuki Ishikawa, Masayuki Motoyanagi
  • Publication number: 20180026611
    Abstract: A signal transmission circuit which transmits N (N is a natural number of 2 or more) input signals includes a transmission signal generation portion, 2N transmission portions and an output portion. The transmission signal generation portion generates 2N transmission signals according to the N input signals. The 2N transmission portions respectively transmit the 2N transmission signals output from the transmission signal generation portion while performing electrical insulation. The output portion generates and outputs, based on the 2N transmission signals transmitted by the 2N transmission portions, N output signals that respectively indicate the N input signals. The transmission signal generation portion generates a pulse according to the N input signals and incorporates the pulse in only one of the 2N transmission signals at the same time.
    Type: Application
    Filed: July 18, 2017
    Publication date: January 25, 2018
    Inventors: Toshiyuki ISHIKAWA, Daiki YANAGISHIMA, Yoshizo OSUMI
  • Patent number: 9871423
    Abstract: To provide a rotary actuator vibration control mechanism that both reduces vibration during operation and contributes to simplifying the overall structure. In this rotary actuator vibration control mechanism, a continuous shock absorbing member that is integrally formed together with a stopper and an engagement means is laid out in a rotary actuator comprising the following: a case; a rotor that is disposed inside said case and swings back and forth; an output shaft that supports said rotor and outputs the force of the swinging thereof to the outside; the aforementioned stopper, which prescribes the movement path of the rotor inside the case; and the aforementioned engagement means, which engages with an externally attached device disposed outside the case. The shock absorbing member is designed such that the stopper is formed by the molded body that forms the shock absorbing member, and is also designed so as to cover the entire engagement means.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 16, 2018
    Assignee: Oki Micro Engineering Company Limited
    Inventors: Toshiyuki Ishikawa, Masayuki Motoyanagi
  • Publication number: 20170287624
    Abstract: The semiconductor device of the present invention includes an insulating layer, a high voltage coil and a low voltage coil which are disposed in the insulating layer at an interval in the vertical direction, a low potential portion which is provided in a low voltage region disposed around a high voltage region for the high voltage coil in planar view and is connected with potential lower than the high voltage coil, and an electric field shield portion which is disposed between the high voltage coil and the low voltage region and includes an electrically floated metal member.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 5, 2017
    Applicant: ROHM CO., LTD.
    Inventors: Kosei OSADA, Isamu NISHIMURA, Tetsuya KAGAWA, Daiki YANAGISHIMA, Toshiyuki ISHIKAWA, Michihiko MIFUJI, Satoshi KAGEYAMA, Nobuyuki KASAHARA
  • Publication number: 20170194959
    Abstract: Disclosed is a signal transmission circuit device (200) including a feedback signal transmission unit (210) that feeds back a control output signal (Sout) as a feedback signal (Sf) to an input side circuit (200A). A logical comparison circuit (212) detects “mismatch” between input and output by performing logical comparison between a control input signal (Sin) and the feedback signal (Sf). When a state of “mismatch” between input and output occurs, a first pulse generating circuit (202) or a second pulse generating circuit (204) outputs a first correction signal (Sa1) or a second correction signal (Sa2) corresponding to a potential (high level or low level) of the control input signal (Sin), and corrects the control output signal (Sout) to the same potential (high level or low level) as the control input signal (Sin).
    Type: Application
    Filed: March 20, 2017
    Publication date: July 6, 2017
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa, Hirotaka Takihara
  • Patent number: 9697948
    Abstract: The semiconductor device of the present invention includes an insulating layer, a high voltage coil and a low voltage coil which are disposed in the insulating layer at an interval in the vertical direction, a low potential portion which is provided in a low voltage region disposed around a high voltage region for the high voltage coil in planar view and is connected with potential lower than the high voltage coil, and an electric field shield portion which is disposed between the high voltage coil and the low voltage region and includes an electrically floated metal member.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: July 4, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Kosei Osada, Isamu Nishimura, Tetsuya Kagawa, Daiki Yanagishima, Toshiyuki Ishikawa, Michihiko Mifuji, Satoshi Kageyama, Nobuyuki Kasahara
  • Patent number: 9632135
    Abstract: Disclosed is a signal transmission circuit device (200) including a feedback signal transmission unit (210) that feeds back a control output signal (Sout) as a feedback signal (Sf) to an input side circuit (200A). A logical comparison circuit (212) detects “mismatch” between input and output by performing logical comparison between a control input signal (Sin) and the feedback signal (Sf). When a state of “mismatch” between input and output occurs, a first pulse generating circuit (202) or a second pulse generating circuit (204) outputs a first correction signal (Sa1) or a second correction signal (Sa2) corresponding to a potential (high level or low level) of the control input signal (Sin), and corrects the control output signal (Sout) to the same potential (high level or low level) as the control input signal (Sin). With such configuration, the mismatch between input and output can be automatically corrected.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 25, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa, Hirotaka Takihara
  • Publication number: 20160020668
    Abstract: To provide a rotary actuator vibration control mechanism that both reduces vibration during operation and contributes to simplifying the overall structure. In this rotary actuator vibration control mechanism, a continuous shock absorbing member that is integrally formed together with a stopper and an engagement means is laid out in a rotary actuator comprising the following: a case; a rotor that is disposed inside said case and swings back and forth; an output shaft that supports said rotor and outputs the force of the swinging thereof to the outside; the aforementioned stopper, which prescribes the movement path of the rotor inside the case; and the aforementioned engagement means, which engages with an externally attached device disposed outside the case. The shock absorbing member is designed such that the stopper is formed by the molded body that forms the shock absorbing member, and is also designed so as to cover the entire engagement means.
    Type: Application
    Filed: March 7, 2013
    Publication date: January 21, 2016
    Inventors: Toshiyuki ISHIKAWA, Masayuki MOTOYANAGI
  • Publication number: 20160017928
    Abstract: To provide a structure for coupling a rotary actuator to a driven body whereby vibration and noise are reduced and assembly, disassembly, and maintenance after attachment to another device are made easy. This structure comprises the following: support parts laid out opposite a frame; a driven body positioned between said support parts; a shaft that holds said driven body and acts as a rotary shaft; and a rotary actuator coupled to said shaft. One end of the shaft is rotatably supported by one of the support parts, and the other end of the shaft is supported by being coupled to the rotary actuator through the opposing frame by being fitted into a tubular recess formed in the output shaft of the rotary actuator. A protrusion that is formed on the rotary actuator and cushioned in the direction of rotation is fitted into an engagement hole in the frame so as to affix the rotary actuator to the frame.
    Type: Application
    Filed: March 4, 2013
    Publication date: January 21, 2016
    Inventors: Toshiyuki ISHIKAWA, Masayuki MOTOYANAGI
  • Patent number: 9088444
    Abstract: A signal-transferring device having a first circuit and a second circuit that operate on different ground references, and a third circuit for transferring signals while providing insulation between the first circuit and the second circuit. The second circuit switches a logic level of an output signal in accordance with the logic level of an input signal notified by the first circuit, and notifies the first circuit about the logic level of the output signal. The first circuit notifies the second circuit about the logic level of the input signal not only when the logic level of the input signal has been switched, but also when the logic level of the output signal notified by the second circuit does not match the logic level of the input signal.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 21, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Akio Sasabe, Hirotaka Takihara, Makoto Ikenaga, Toshiyuki Ishikawa
  • Publication number: 20150137314
    Abstract: The semiconductor device of the present invention includes an insulating layer, a high voltage coil and a low voltage coil which are disposed in the insulating layer at an interval in the vertical direction, a low potential portion which is provided in a low voltage region disposed around a high voltage region for the high voltage coil in planar view and is connected with potential lower than the high voltage coil, and an electric field shield portion which is disposed between the high voltage coil and the low voltage region and includes an electrically floated metal member.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 21, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Kosei OSADA, Isamu NISHIMURA, Tetsuya KAGAWA, Daiki YANAGISHIMA, Toshiyuki ISHIKAWA, Michihiko MIFUJI, Satoshi KAGEYAMA, Nobuyuki KASAHARA
  • Publication number: 20150137843
    Abstract: Disclosed is a signal transmission circuit device (200) including a feedback signal transmission unit (210) that feeds back a control output signal (Sout) as a feedback signal (Sf) to an input side circuit (200A). A logical comparison circuit (212) detects “mismatch” between input and output by performing logical comparison between a control input signal (Sin) and the feedback signal (Sf). When a state of “mismatch” between input and output occurs, a first pulse generating circuit (202) or a second pulse generating circuit (204) outputs a first correction signal (Sa1) or a second correction signal (Sa2) corresponding to a potential (high level or low level) of the control input signal (Sin), and corrects the control output signal (Sout) to the same potential (high level or low level) as the control input signal (Sin). With such configuration, the mismatch between input and output can be automatically corrected.
    Type: Application
    Filed: December 19, 2014
    Publication date: May 21, 2015
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa, Hirotaka Takihara
  • Patent number: 8947117
    Abstract: Disclosed is a signal transmission circuit device (200) including a feedback signal transmission unit (210) that feeds back a control output signal (Sout) as a feedback signal (Sf) to an input side circuit (200A). A logical comparison circuit (212) detects “mismatch” between input and output by performing logical comparison between a control input signal (Sin) and the feedback signal (Sf). When a state of “mismatch” between input and output occurs, a first pulse generating circuit (202) or a second pulse generating circuit (204) outputs a first correction signal (Sa1) or a second correction signal (Sa2) corresponding to a potential (high level or low level) of the control input signal (Sin), and corrects the control output signal (Sout) to the same potential (high level or low level) as the control input signal (Sin). With such configuration, the mismatch between input and output can be automatically corrected.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: February 3, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa, Hirotaka Takihara
  • Publication number: 20140361810
    Abstract: A signal-transferring device having a first circuit and a second circuit that operate on different ground references, and a third circuit for transferring signals while providing insulation between the first circuit and the second circuit. The second circuit switches a logic level of an output signal in accordance with the logic level of an input signal notified by the first circuit, and notifies the first circuit about the logic level of the output signal. The first circuit notifies the second circuit about the logic level of the input signal not only when the logic level of the input signal has been switched, but also when the logic level of the output signal notified by the second circuit does not match the logic level of the input signal.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 11, 2014
    Inventors: Akio SASABE, Hirotaka TAKIHARA, Makoto IKENAGA, Toshiyuki ISHIKAWA
  • Patent number: 8823438
    Abstract: A signal transmission circuit 200 transmits input signals IN1 and IN2 each having a different transmission speed in a mutually electrically insulated manner. Signal transmission circuit 200 includes a pulse generation unit 210, transmission units 230 and 235, a latch circuit 250, and an oscillation determination circuit 270. Transmission units 230 and 235 transmit pulse signals PLS_A and PLS_B generated by pulse generation unit 210 in accordance with logical states of input signals IN1 and IN2 to latch circuit 250 and oscillation determination circuit 270 in a mutually electrically insulated manner. Latch circuit 250 restores input signal IN1 in accordance with rising edges of pulse signals PLS_A and PLS_B. Oscillation determination circuit 270 restores input signal IN2 based on oscillation states of pulse signals PLS_A and PLS_B. With such a configuration, a plurality of signals each having a different transmission speed can be transmitted in a mutually electrically insulated manner.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: September 2, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa
  • Publication number: 20140002168
    Abstract: A signal transmission circuit 200 transmits input signals IN1 and IN2 each having a different transmission speed in a mutually electrically insulated manner. Signal transmission circuit 200 includes a pulse generation unit 210, transmission units 230 and 235, a latch circuit 250, and an oscillation determination circuit 270. Transmission units 230 and 235 transmit pulse signals PLS_A and PLS_B generated by pulse generation unit 210 in accordance with logical states of input signals IN1 and IN2 to latch circuit 250 and oscillation determination circuit 270 in a mutually electrically insulated manner. Latch circuit 250 restores input signal IN1 in accordance with rising edges of pulse signals PLS_A and PLS_B. Oscillation determination circuit 270 restores input signal IN2 based on oscillation states of pulse signals PLS_A and PLS_B. With such a configuration, a plurality of signals each having a different transmission speed can be transmitted in a mutually electrically insulated manner.
    Type: Application
    Filed: June 21, 2013
    Publication date: January 2, 2014
    Applicant: Rohm Co., Ltd.
    Inventors: Daiki Yanagishima, Toshiyuki Ishikawa
  • Patent number: 8479600
    Abstract: A bi-directional rotary actuator causing the output shaft thereof to output two or more kinds of bi-directional and rotational driving forces. A bi-directional rotary actuator includes a rotary solenoid (101) serving as a driving source, a link body (104) engaged with a shaft (132) such that a rotational force can be transmitted to the shaft, an output element (105) connected to the link body, and switching operation means (106) for selecting connection between the link body and the output element. Transmission of a rotational force between the link body and the output element can be appropriately switched to either gear drive performed by meshing of gears or link drive based on a link ratio, and this allows the actuator to output bi-directional rotary driving forces having two or three rotational angles. The switching described above is performed by movement, in the direction of the axis of the shaft, of the link body by utilizing the repulsive or attractive action of an electromagnetic force.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: July 9, 2013
    Assignees: Oki Electric Industry Co., Ltd., Oki Micro Engineering Company Limited
    Inventors: Atsushi Matsumoto, Toshiyuki Ishikawa, Hiroyuki Kanno
  • Patent number: D817347
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: May 8, 2018
    Assignee: SINTOKOGIO, LTD.
    Inventors: Toshiyuki Ishikawa, Katsushige Yamamoto, Norihiro Hirata, Yoshihiko Ogi, Satoru Nagami, Toshinori Ito
  • Patent number: D817348
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: May 8, 2018
    Assignee: SINTOKOGIO, LTD.
    Inventors: Toshiyuki Ishikawa, Katsushige Yamamoto, Norihiro Hirata, Yoshihiko Ogi, Satoru Nagami, Toshinori Ito