Patents by Inventor Daisuke Umehara

Daisuke Umehara 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: 11929599
    Abstract: A wiring member with a fixing member includes a wiring member, and a fixing member. The wiring member includes a plurality of wire-like transmission members and a base material. The plurality of wire-like transmission members are fixed to the base material in an arrayed state. The base material is bent so as to surround the plurality of wire-like transmission members. The fixing member includes an attachment part and a fixing part. The attachment part is attached to the wiring member so as to be located on outside of the base material. The fixing part is a part being connected to the attachment part and being fixed to a fixing target of the wiring member. In a state in which the attachment part is attached to the wiring member, the base material is maintained in a bent state.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: March 12, 2024
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tetsuya Nishimura, Daisuke Ebata, Taku Umehara, Ryuta Takakura, Kenta Arai, Miyu Aramaki
  • Patent number: 9048888
    Abstract: A power line communication system is provided in which the influence of the impulsive noise unexpectedly generated on a power line which is a communication medium can be reduced according to the characteristics of the impulsive noise by an existing method and power line communication can be realized without a hindrance. A transmitter is constituted by: a modulator for conveying a LIN data signal by a power line; a filter that allows a signal of a predetermined band to pass therethrough; and a sinusoidal wave outputter (sinusoidal wave in the figure). In contrast, the receiver is constituted by the sinusoidal wave outputter, the filter and a demodulator that performs demodulation. To the power line, a limiter that limits the amplitude of the propagating signal to a predetermined amplitude (reception signal amplitude) is connected.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: June 2, 2015
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Daisuke Umehara, Yasuhiro Yabuuchi, Masahiro Morikura, Toshiya Hisada, Shinichi Ishiko, Satoshi Horihata, Tetsuo Morita
  • Patent number: 8982770
    Abstract: Provided is a wireless relay system that improves system throughput between terminal stations and flexibly makes system throughput variable with respect to short-term traffic fluctuations. In the wireless relay system, a plurality of relay stations relay communication between two terminal stations that perform random access. The terminal stations and the relay stations include a slot synchronization unit, a time synchronization unit, and a transmission unit. The slot synchronization unit synchronizes slot timing of a time slot indicating a unit time. The time synchronization unit performs time synchronization for synchronization of the slot timing. The transmission unit transmits a transmission packet to a wireless line in synchronization with the slot timing.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: March 17, 2015
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takatoshi Sugiyama, Daisuke Umehara, Masaaki Tanaka
  • Patent number: 8718124
    Abstract: For voltage values (observed noise sequence) in an electronic power line (communication medium) which are obtained at a predetermined interval, initial values of noise characteristics based on a statistic of the observed noise sequence itself are decided by a moment method (S301 to S307), the noise characteristics (state transition probabilities and state noise power) for maximization of the likelihood of the observed noise sequence are obtained from the initial values by MAP (Maximum A Posteriori) estimation using a Baum-Welch algorithm (S309 to S312), a state sequence is estimated from the obtained noise characteristics, and an impulsive noise at each time point is detected.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: May 6, 2014
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Daisuke Umehara, Masahiro Morikura, Toshiya Hisada, Shinichi Ishiko, Satoshi Horihata
  • Publication number: 20130343445
    Abstract: For voltage values (observed noise sequence) in an electronic power line (communication medium) which are obtained at a predetermined interval, initial values of noise characteristics based on a statistic of the observed noise sequence itself are decided by a moment method (S301 to S307), the noise characteristics (state transition probabilities and state noise power) for maximization of the likelihood of the observed noise sequence are obtained from the initial values by MAP (Maximum A Posteriori) estimation using a Baum-Welch algorithm (S309 to S312), a state sequence is estimated from the obtained noise characteristics, and an impulsive noise at each time point is detected.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Daisuke UMEHARA, Masahiro MORIKURA, Toshiya HISADA, Shinichi ISHIKO, Satoshi HORIHATA
  • Patent number: 8548036
    Abstract: For voltage values (observed noise sequence) in an electronic power line (communication medium) which are obtained at a predetermined interval, initial values of noise characteristics based on a statistic of the observed noise sequence itself are decided by a moment method (S301 to S307), the noise characteristics (state transition probabilities and state noise power) for maximization of the likelihood of the observed noise sequence are obtained from the initial values by MAP (Maximum A Posteriori) estimation using a Baum-Welch algorithm (S309 to S312), a state sequence is estimated from the obtained noise characteristics, and an impulsive noise at each time point is detected.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: October 1, 2013
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Daisuke Umehara, Masahiro Morikura, Toshiya Hisada, Shinichi Ishiko, Satoshi Horihata
  • Publication number: 20130195208
    Abstract: A power line communication system is provided in which the influence of the impulsive noise unexpectedly generated on a power line which is a communication medium can be reduced according to the characteristics of the impulsive noise by an existing method and power line communication can be realized without a hindrance. A transmitter is constituted by: a modulator for conveying a LIN data signal by a power line; a filter that allows a signal of a predetermined band to pass therethrough; and a sinusoidal wave outputter (sinusoidal wave in the figure). In contrast, the receiver is constituted by the sinusoidal wave outputter, the filter and a demodulator that performs demodulation. To the power line, a limiter that limits the amplitude of the propagating signal to a predetermined amplitude (reception signal amplitude) is connected.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 1, 2013
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Daisuke Umehara, Yasuhiro Yabuuchi, Masahiro Morikura, Toshiya Hisada, Shinichi Ishiko, Satoshi Horihata, Tetsuo Morita
  • Publication number: 20120201193
    Abstract: Provided is a wireless relay system that improves system throughput between terminal stations and flexibly makes system throughput variable with respect to short-term traffic fluctuations. In the wireless relay system, a plurality of relay stations relay communication between two terminal stations that perform random access. The terminal stations and the relay stations include a slot synchronization unit, a time synchronization unit, and a transmission unit. The slot synchronization unit synchronizes slot timing of a time slot indicating a unit time. The time synchronization unit performs time synchronization for synchronization of the slot timing. The transmission unit transmits a transmission packet to a wireless line in synchronization with the slot timing.
    Type: Application
    Filed: September 28, 2010
    Publication date: August 9, 2012
    Applicant: Nippon Telegraph and Telephone Corporation
    Inventors: Takatoshi Sugiyama, Daisuke Umehara, Masaaki Tanaka
  • Publication number: 20100329320
    Abstract: For voltage values (observed noise sequence) in an electronic power line (communication medium) which are obtained at a predetermined interval, initial values of noise characteristics based on a statistic of the observed noise sequence itself are decided by a moment method (S301 to S307), the noise characteristics (state transition probabilities and state noise power) for maximization of the likelihood of the observed noise sequence are obtained from the initial values by MAP (Maximum A Posteriori) estimation using a Baum-Welch algorithm (S309 to S312), a state sequence is estimated from the obtained noise characteristics, and an impulsive noise at each time point is detected.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 30, 2010
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Daisuke Umehara, Masahiro Morikura, Toshiya Hisada, Shinichi Ishiko, Satoshi Horihata