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).
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Patent number: 10371821Abstract: 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: GrantFiled: June 17, 2016Date of Patent: August 6, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keisuke Nishi, Seiji Yoshida, Takashi Hirose
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Publication number: 20180196143Abstract: 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: ApplicationFiled: June 17, 2016Publication date: July 12, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keisuke NISHI, Seiji YOSHIDA, Takashi HIROSE
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Publication number: 20180024250Abstract: 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: ApplicationFiled: February 12, 2016Publication date: January 25, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keisuke NISHI, Youichi FUKADA, Akihiro MORITA, Seiji YOSHIDA, Takashi HIROSE
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Patent number: 9866327Abstract: 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: GrantFiled: October 10, 2013Date of Patent: January 9, 2018Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Naotaka Shibata, Seiji Yoshida, Shigeru Kuwano, Jun-ichi Kani, Jun Terada
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Publication number: 20170350984Abstract: 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: ApplicationFiled: February 12, 2016Publication date: December 7, 2017Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keisuke NISHI, Youichi FUKADA, Akihiro MORITA, Seiji YOSHIDA, Takashi HIROSE
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Publication number: 20150229397Abstract: 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: ApplicationFiled: October 10, 2013Publication date: August 13, 2015Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORTIONInventors: Naotaka Shibata, Seiji Yoshida, Shigeru Kuwano, Jun-ichi Kani, Jun Terada
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Patent number: 9030291Abstract: 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: GrantFiled: March 14, 2013Date of Patent: May 12, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Hirokazu Muramatsu, Kenji Oka, Seiji Yoshida
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Patent number: 8951039Abstract: 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: GrantFiled: October 9, 2009Date of Patent: February 10, 2015Assignee: Japan Aerospace Exploration AgencyInventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
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Patent number: 8614827Abstract: 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: GrantFiled: September 28, 2004Date of Patent: December 24, 2013Assignee: Brother Kogyo Kabushiki KaishaInventors: Masashi Ueda, Seiji Yoshida, Ryuji Yamada
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Patent number: 8440287Abstract: 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: GrantFiled: July 14, 2010Date of Patent: May 14, 2013Assignee: Honda Motor Co., LtdInventors: Toshimitsu Shimizu, Seiji Yoshida
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Patent number: 8327643Abstract: 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: GrantFiled: May 28, 2010Date of Patent: December 11, 2012Assignee: Japan Aerospace Exploration AgencyInventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
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Publication number: 20120196086Abstract: 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: ApplicationFiled: July 14, 2010Publication date: August 2, 2012Applicant: HONDA MOTOR CO., LTDInventors: Toshimitsu Shimizu, Seiji Yoshida
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Publication number: 20120095672Abstract: 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: ApplicationFiled: October 21, 2011Publication date: April 19, 2012Applicant: PANASONIC CORPORATIONInventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
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Patent number: 8078563Abstract: 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: GrantFiled: November 24, 2009Date of Patent: December 13, 2011Assignee: Panasonic CorporationInventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
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Publication number: 20100308135Abstract: 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: ApplicationFiled: May 28, 2010Publication date: December 9, 2010Applicant: JAPAN AEROSPACE EXPLORATION AGENCYInventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
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Patent number: 7701624Abstract: 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: GrantFiled: December 27, 2004Date of Patent: April 20, 2010Assignee: Brother Kogyo Kabushiki KaishaInventors: Ryuji Yamada, Seiji Yoshida, Masashi Ueda
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Patent number: 7701615Abstract: 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: GrantFiled: September 22, 2006Date of Patent: April 20, 2010Assignee: Brother Kogyo Kabushiki KaishaInventors: Toshio Furukawa, Masashi Suzuki, Seiji Yoshida
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Publication number: 20100092901Abstract: 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: ApplicationFiled: October 9, 2009Publication date: April 15, 2010Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
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Publication number: 20100070170Abstract: 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: ApplicationFiled: November 24, 2009Publication date: March 18, 2010Applicant: PANASONIC CORPORATIONInventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda
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Patent number: 7634452Abstract: 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: GrantFiled: February 14, 2002Date of Patent: December 15, 2009Assignee: Panasonic CorporationInventors: Shinya Adachi, Satoko Miyama, Naoki Yamada, Seiji Yoshida, Yukio Ichikawa, Takashi Kawasato, Hiroyuki Maeda