Patents by Inventor Akio Okahara

Akio Okahara 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: 9826620
    Abstract: A high frequency generating device used in a plasma ignition apparatus according to an embodiment includes a high frequency output unit, an output control unit, a current detecting unit, and an abnormality detecting unit. The high frequency output unit outputs a high frequency. The output control unit shifts a state of the high frequency output unit from a non-output state to an output-ready state of the high frequency. The current detecting unit detects a current that flows through a power-supply path to the high frequency output unit. The abnormality detecting unit detects output abnormality of the high frequency in the non-output state when a value of a current detected by the current detecting unit in the non-output state exceeds a non-output threshold.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: November 21, 2017
    Assignee: FUJITSU TEN LIMITED
    Inventors: Masashi Shibayama, Shoko Yamoto, Jyunya Tokinaga, Yusuke Masuda, Saori Aiba, Akio Okahara
  • Patent number: 9695794
    Abstract: A control device of a plasma ignition apparatus according to an embodiment includes a plug socket, an oscillation unit, and an amplification unit. The plug socket holds an ignition plug, and a high voltage generated by an ignition coil is transmitted to the ignition plug through the plug socket. The oscillation unit oscillates a high frequency. The amplification unit amplifies the high frequency oscillated by the oscillation unit. The oscillation unit is arranged outside of the plug socket and the amplification unit is arranged inside of the plug socket.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 4, 2017
    Assignee: FUJITSU TEN LIMITED
    Inventors: Shoko Yamoto, Akio Okahara, Yusuke Masuda
  • Publication number: 20170064805
    Abstract: A high frequency generating device used in a plasma ignition apparatus according to an embodiment includes a high frequency output unit, an output control unit, a current detecting unit, and an abnormality detecting unit. The high frequency output unit outputs a high frequency. The output control unit shifts a state of the high frequency output unit from a non-output state to an output-ready state of the high frequency. The current detecting unit detects a current that flows through a power-supply path to the high frequency output unit. The abnormality detecting unit detects output abnormality of the high frequency in the non-output state when a value of a current detected by the current detecting unit in the non-output state exceeds a non-output threshold.
    Type: Application
    Filed: July 12, 2016
    Publication date: March 2, 2017
    Applicant: FUJITSU TEN LIMITED
    Inventors: Masashi SHIBAYAMA, Shoko YAMOTO, Jyunya TOKINAGA, Yusuke MASUDA, Saori AIBA, Akio OKAHARA
  • Publication number: 20170037827
    Abstract: A control device of a plasma ignition apparatus according to an embodiment includes a plug socket, an oscillation unit, and an amplification unit. The plug socket holds an ignition plug, and a high voltage generated by an ignition coil is transmitted to the ignition plug through the plug socket. The oscillation unit oscillates a high frequency. The amplification unit amplifies the high frequency oscillated by the oscillation unit. The oscillation unit is arranged outside of the plug socket and the amplification unit is arranged inside of the plug socket.
    Type: Application
    Filed: July 7, 2016
    Publication date: February 9, 2017
    Applicant: FUJITSU TEN LIMITED
    Inventors: Shoko YAMOTO, Akio OKAHARA, Yusuke MASUDA
  • Patent number: 7642902
    Abstract: Provided is a vehicle abnormality detecting device including an abnormality detecting unit 70A for detecting abnormality on the basis of a state of current supply to a state detecting unit 30, and a power supply control unit 11 for switching a state of power supply to the state detecting unit 30 when the abnormality was detected by the abnormality detecting unit 70A, so that power consumption at the time of detecting the abnormality is suppressed to avoid the battery consumption.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: January 5, 2010
    Assignee: Fujitsu Ten Limited
    Inventors: Norimitsu Yukumatsu, Akio Okahara, Tomohiko Tamaki, Takayuki Seto
  • Publication number: 20070185677
    Abstract: Provided is a vehicle abnormality detecting device including an abnormality detecting unit 70A for detecting abnormality on the basis of a state of current supply to a state detecting unit 30, and a power supply control unit 11 for switching a state of power supply to the state detecting unit 30 when the abnormality was detected by the abnormality detecting unit 70A, so that power consumption at the time of detecting the abnormality is suppressed to avoid the battery consumption.
    Type: Application
    Filed: January 24, 2007
    Publication date: August 9, 2007
    Applicant: FUJITSU TEN LIMITED
    Inventors: Norimitsu Yukumatsu, Akio Okahara, Tomohiko Tamaki, Takayuki Seto
  • Patent number: 7213097
    Abstract: An input processing circuit is interposed between input terminals and input ports of an MPU. An output processing circuit is interposed between output ports of the MPU and output terminals. The input processing circuit includes switch sections and processing sections. The output processing circuit includes switch sections and processing sections. A switch control section switches the switch sections based on switch information stored in a switch information storage section to switch a connection relationship between the input terminals and the input ports, processing for an input signal, a connection relationship between the output ports and the output terminals, and processing for an output signal.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: May 1, 2007
    Assignee: Fujitsu Ten Limited
    Inventors: Tomohide Kasame, Yoshikazu Hashimoto, Yuichiro Shimizu, Nobunori Asayama, Akio Okahara, Kazuhiro Komatsu, Takashi Higuchi
  • Publication number: 20040236873
    Abstract: An input processing circuit is interposed between input terminals and input ports of an MPU. An output processing circuit is interposed between output ports of the MPU and output terminals. The input processing circuit includes switch sections and processing sections. The output processing circuit includes switch sections and processing sections. A switch control section switches the switch sections based on switch information stored in a switch information storage section to switch a connection relationship between the input terminals and the input ports, processing for an input signal, a connection relationship between the output ports and the output terminals, and processing for an output signal.
    Type: Application
    Filed: January 26, 2004
    Publication date: November 25, 2004
    Applicant: FUJITSU TEN LIMITED
    Inventors: Tomohide Kasame, Yoshikazu Hashimoto, Yuichiro Shimizu, Nobunori Asayama, Akio Okahara, Kazuhiro Komatsu, Takashi Higuchi