Patents by Inventor Seiji Yoshida

Seiji Yoshida 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: 10371821
    Abstract: A navigation satellite signal reception apparatus includes a satellite antenna; a satellite orbital information collection unit that collects orbital information of a navigation satellite; a peripheral environment spatial information collection unit that collects spatial information for a peripheral environment of an installation position of the satellite antenna; a positional information collection unit that collects positional information for the installation position of the satellite antenna; and a signal correction unit that performs a determination process to determine whether a navigation satellite associated with the received satellite signal is in a directly viewable state or in a non-directly-viewable state from the installation position of the satellite antenna, and that performs a correction process on a satellite signal from a navigation satellite in an NLOS state, on the assumption that the satellite signal is a reflected wave.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 6, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke Nishi, Seiji Yoshida, Takashi Hirose
  • Publication number: 20180196143
    Abstract: A navigation satellite signal reception apparatus includes a satellite antenna; a satellite orbital information collection unit that collects orbital information of a navigation satellite; a peripheral environment spatial information collection unit that collects spatial information for a peripheral environment of an installation position of the satellite antenna; a positional information collection unit that collects positional information for the installation position of the satellite antenna; and a signal correction unit that performs a determination process to determine whether a navigation satellite associated with the received satellite signal is in a directly viewable state or in a non-directly-viewable state from the installation position of the satellite antenna, and that performs a correction process on a satellite signal from a navigation satellite in an NLOS state, on the assumption that the satellite signal is a reflected wave.
    Type: Application
    Filed: June 17, 2016
    Publication date: July 12, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke NISHI, Seiji YOSHIDA, Takashi HIROSE
  • Publication number: 20180024250
    Abstract: A satellite signal reception characteristic estimation apparatus includes a satellite orbital information collection unit that collects and outputs orbital information for a satellite; a peripheral environment spatial information collection unit that collects spatial information for a peripheral environment of an installation position of a satellite antenna; a positional information collection unit that collects and outputs positional information for the installation position of the satellite antenna; and a simulation server unit that estimates reception characteristics of satellite signals at the installation position of the satellite antenna by performing a simulation based on the orbital information, the spatial information, and the positional information outputted from the satellite orbital information collection unit, the peripheral environment spatial information collection unit, and the positional information collection unit.
    Type: Application
    Filed: February 12, 2016
    Publication date: January 25, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke NISHI, Youichi FUKADA, Akihiro MORITA, Seiji YOSHIDA, Takashi HIROSE
  • Patent number: 9866327
    Abstract: Since a sampling frequency of RRU is always constant, A/D conversion may be performed with a sampling frequency higher than necessary with respect to a frequency band width of a radio signal. A sampling frequency change function, and the sampling frequency is reduced in a range where a aliasing component does not deteriorate signal quality of a desired signal component when the sampling frequency is decreased, based on radio band allocation information, or signal transmission between BBU and RRU is stopped in a no signal section, whereby a band required for digital RoF transmission between the BBU and the RRU is reduced.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: January 9, 2018
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Naotaka Shibata, Seiji Yoshida, Shigeru Kuwano, Jun-ichi Kani, Jun Terada
  • Publication number: 20170350984
    Abstract: A time synchronization method that is capable of selecting whether synchronization, by a timepiece unit that generates a time signal synchronized with a standard time and outputs it to an exterior, with the time is performed by time information obtained by receiving a radio wave including information relating to the time, or is performed by means of a holdover performed using a clock signal from an internal or external clock source. A schedule having a first time period in which the above-mentioned time information is used, and a second time period by means of the holdover is determined according to temporal reception characteristics of the radio wave at a reception location of the radio wave, and according to the schedule, supplying the timepiece unit with the time information or supplying the timepiece unit with the clock signal from the internal or external clock source.
    Type: Application
    Filed: February 12, 2016
    Publication date: December 7, 2017
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke NISHI, Youichi FUKADA, Akihiro MORITA, Seiji YOSHIDA, Takashi HIROSE
  • Publication number: 20150229397
    Abstract: Since a sampling frequency of RRU is always constant, A/D conversion may be performed with a sampling frequency higher than necessary with respect to a frequency band width of a radio signal. A sampling frequency change function, and the sampling frequency is reduced in a range where a aliasing component does not deteriorate signal quality of a desired signal component when the sampling frequency is decreased, based on radio band allocation information, or signal transmission between BBU and RRU is stopped in a no signal section, whereby a band required for digital RoF transmission between the BBU and the RRU is reduced.
    Type: Application
    Filed: October 10, 2013
    Publication date: August 13, 2015
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORTION
    Inventors: Naotaka Shibata, Seiji Yoshida, Shigeru Kuwano, Jun-ichi Kani, Jun Terada
  • Patent number: 9030291
    Abstract: A system for controlling vehicle opening/closing element has a radiation block for irradiating near-infrared light to a peripheral region of an opening/closing element; a photographing block that photographs an image irradiated with the near-infrared light; a hand region extraction block that extracts a user's hand region from brightness of an image photographed by the photographing block; a motion detection block that detects motions of the user's hand from the extracted hand region; and a control block that determines whether or not the detected motions coincide with previously-set predetermined motions and that commands operation of the opening/closing element in accordance with the determined motions.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 12, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirokazu Muramatsu, Kenji Oka, Seiji Yoshida
  • Patent number: 8951039
    Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: February 10, 2015
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
  • Patent number: 8614827
    Abstract: An image processing method determines a number of smoothing times Stime so that the number of times, at which the corrected tone values will be modified, increases as the amount of modification, by which the corrected tone values are required to be modified, increases; and modifies the corrected tone values by dividing the modification amount by the number of smoothing times Stime so that the actual printing characteristics R[i] predicted to be actually obtained approach the ideal characteristics T[i] in steps of the smoothing times Stime. Therefore, the image processing method can prevent an abrupt change in the characteristics of printed color density levels before and after the corrected tone values are modified, even when the modification amount of the corrected tone values is large.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: December 24, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Masashi Ueda, Seiji Yoshida, Ryuji Yamada
  • Patent number: 8440287
    Abstract: A vehicle interior material of the present invention is a vehicle interior material that is disposed in a lower side of windshield glass inside a compartment and includes a grain structure including a concavity and a convexity on the upper face thereof, the vehicle interior material including at the convexity of the grain structure, a diffuse reflection face that is inclined with respect to a general upper face of the grain structure.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: May 14, 2013
    Assignee: Honda Motor Co., Ltd
    Inventors: Toshimitsu Shimizu, Seiji Yoshida
  • Patent number: 8327643
    Abstract: A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: December 11, 2012
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
  • Publication number: 20120196086
    Abstract: A vehicle interior material of the present invention is a vehicle interior material that is disposed in a lower side of windshield glass inside a compartment and includes a grain structure including a concavity and a convexity on the upper face thereof, the vehicle interior material including at the convexity of the grain structure, a diffuse reflection face that is inclined with respect to a general upper face of the grain structure.
    Type: Application
    Filed: July 14, 2010
    Publication date: August 2, 2012
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Toshimitsu Shimizu, Seiji Yoshida
  • Publication number: 20120095672
    Abstract: A system includes a transmitting apparatus having a first digital map and a receiving apparatus having a second digital map. The second digital map shows a road segment at a different location from the first digital map due to errors. The transmitting apparatus transmits location information to the receiving apparatus. The location information includes coordinates information, attribute information, and relative information. After receiving the location information from the transmitting apparatus, the receiving apparatus identifies the location of a road segment on the second digital map by using the coordinates information and the attribute information and identifies a location of a traffic event on the road segment on the second digital map by using the relative information. The relative information includes a distance from a start point of a road segment on the first digital map to the location on the road segment on the first digital map.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 19, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
  • Patent number: 8078563
    Abstract: When transmitting an on-road location on a digital map, an information provider transmits, as on-road location information, string of coordinates information representing the road shape of a road section including the on-road location having a predetermined length, additional information including at least one information item chosen from a group of the attribute information on the road including the road location and detailed information on the nodes in the road section, and relative information indicating the on-road location in the road section. Receiving party receiving this on-road location information performs shape matching to identify the road section on a digital map and uses relative data to identify the on-road location in this road section. The receiving party can identify the road shape with high accuracy even when only a small amount of string of coordinates data is available. This makes it possible to reduce the data transmission amount and identify an on-load location with high accuracy.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: December 13, 2011
    Assignee: Panasonic Corporation
    Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
  • Publication number: 20100308135
    Abstract: A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 9, 2010
    Applicant: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
  • Patent number: 7701624
    Abstract: In a color laser printer, the printing density of images to be formed is corrected based on a correction values stored in a control memory, For each printing operation the printer determines whether the correction values stored in the control memory matches a value stored in a backup memory. If the correction values in the control memory does not match the correction values in the backup memory, the value of a number of printed pages A serving as the printing performance is incremented by one. If the number of printed pages A is greater than a reference performance number of sheets B pre-stored in memory, then the correction values in the control memory is copied to the backup memory, and the printing operation is executed. If a “Restore correction data” command is inputted, the contents of the backup memory are copied to the control memory.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: April 20, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Ryuji Yamada, Seiji Yoshida, Masashi Ueda
  • Patent number: 7701615
    Abstract: Whether or not a density of black is a predetermined value or more is judged, and when it is judged to be the predetermined value or more, a resolution characteristic is changed to an improved resolution characteristic compared to the resolution characteristic used in a case in which a judgment result shows a value under the predetermined value. When the density of black is deeper, the resolution characteristic is improved, and therefore black is prevented from becoming in a so-called void state. Accordingly, the color close to black such as four-color black can be stably and excellently formed. In addition, when the density of black is the value under the predetermined value, the resolution characteristic lower than this value is used, and therefore dots can be stably formed and an excellent gradation property can be achieved.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: April 20, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshio Furukawa, Masashi Suzuki, Seiji Yoshida
  • Publication number: 20100092901
    Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 15, 2010
    Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
  • Publication number: 20100070170
    Abstract: When transmitting an on-road location on a digital map, an information provider transmits, as on-road location information, string of coordinates information representing the road shape of a road section including the on-road location having a predetermined length, additional information including at least one information item chosen from a group of the attribute information on the road including the road location and detailed information on the nodes in the road section, and relative information indicating the on-road location in the road section. Receiving party receiving this on-road location information performs shape matching to identify the road section on a digital map and uses relative data to identify the on-road location in this road section. The receiving party can identify the road shape with high accuracy even when only a small amount of string of coordinates data is available. This makes it possible to reduce the data transmission amount and identify an on-load location with high accuracy.
    Type: Application
    Filed: November 24, 2009
    Publication date: March 18, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
  • Patent number: 7634452
    Abstract: When transmitting an on-road location on a digital map, an information provider transmits, as on-road location information, string of coordinates information representing the road shape of a road section including the on-road location having a predetermined length, additional information including at least one information item chosen from a group of the attribute information on the road including the road location and detailed information on the nodes in the road section, and relative information indicating the on-road location in the road section. Receiving party receiving this on-road location information performs shape matching to identify the road section on a digital map and uses relative data to identify the on-road location in this road section. The receiving party can identify the road shape with high accuracy even when only a small amount of string of coordinates data is available. This makes it possible to reduce the data transmission amount and identify an on-load location with high accuracy.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda