Patents by Inventor Yoshiyuki Oota
Yoshiyuki Oota 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: 9291599Abstract: A magnetic testing apparatus 100 according to the present invention comprises: a first magnetizing device 1 for applying a DC bias magnetic field to a test object P in substantially parallel to the direction in which a flaw F to be detected extends; a second magnetizing device 2 for applying an AC magnetic field to the test object P substantially perpendicularly to the direction in which the flaw F to be detected extends; and a detecting device 3 for detecting leakage flux produced by the magnetization of the test object P accomplished by the first magnetizing device 1 and the second magnetizing device 2.Type: GrantFiled: August 15, 2012Date of Patent: March 22, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Toshiyuki Suzuma, Yoshiyuki Nakao, Makoto Sakamoto, Yoshiyuki Oota
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Patent number: 8982756Abstract: An intermittent reception control apparatus controls intermittent reception in communication between a base station apparatus and mobile station apparatuses. The intermittent reception control apparatus comprising a control unit that generates DRX parameters, which are intermittent reception parameters, and transmits the generated DRX parameters to the mobile station apparatuses. Further, the DRX parameters include information on the timing at which to cause the mobile station apparatuses to enter an active state and are common to all of the mobile station apparatuses, where the active state is a state where reception of signals transmitted from the base station apparatus is enabled. The intermittent reception control apparatus further comprising a scheduler that transmits to the mobile station apparatuses a DRX command that operates to force these apparatuses to enter an inactive state.Type: GrantFiled: January 18, 2013Date of Patent: March 17, 2015Assignee: Fujitsu LimitedInventors: Toru Imamura, Kiyoshi Miyazawa, Yoshiyuki Oota, Syuuichi Okada, Hiroaki Takashima
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Publication number: 20140137059Abstract: Plasma processing focus ring design arrangements, including: acquiring a surface voltage and a sheath thickness above a surface of the object to be processed, and a surface voltage and a sheath thickness above a surface of the focus ring, by an equivalent circuit analysis; performing 2D plasma and 2D electric field analysis, based on the equivalent circuit analysis; and designing configuration of the focus ring and the processing stage, to achieve a plasma-sheath interface flattening condition by making a sum of a height from a height reference point to a surface of the object and a sheath thickness from the surface of the object to a plasma-sheath interface above the object, equal to a sum of a height from the height reference point to a surface of the focus ring and a sheath thickness from the surface of the focus ring to a plasma-sheath interface above the focus ring.Type: ApplicationFiled: January 21, 2014Publication date: May 15, 2014Applicant: Hitachi High-Technologies CorporationInventors: Ryoji NISHIO, Tadamitsu KANEKIYO, Yoshiyuki OOTA, Tsuyoshi MATSUMOTO
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Patent number: 8632637Abstract: A plasma processing apparatus is disclosed for minimizing the non-uniformity of potential distribution around wafer circumference. The apparatus includes a focus ring formed of a dielectric, and a conductor or a semiconductor having RF applied thereto. A surface voltage of the focus ring is determined to be not less than a minimum voltage for preventing reaction products caused by wafer processing from depositing thereon. The surface height, surface voltage, material, and structure of the focus ring are optimized so that the height of an ion sheath formed on the focus ring surface is either equal or has a height difference within an appropriate tolerance range to the height of the ion sheath formed on the wafer surface.Type: GrantFiled: December 6, 2012Date of Patent: January 21, 2014Assignee: Hitachi High-Technologies CorporationInventors: Ryoji Nishio, Tadamitsu Kanekiyo, Yoshiyuki Oota, Tsuyoshi Matsumoto
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Patent number: 8588817Abstract: A wireless communication device includes an antenna unit that transmits and receives wireless signals, and one or more processors configured to conduct communication with a base station and control displacement of a service area of the base station and a service area of the wireless communication device in response to throughput characteristics of a cell formed by the base station.Type: GrantFiled: June 16, 2011Date of Patent: November 19, 2013Assignee: Fujitsu LimitedInventor: Yoshiyuki Oota
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Publication number: 20130258924Abstract: An intermittent reception control apparatus controls intermittent reception in communication between a base station apparatus and mobile station apparatuses. Further, in the intermittent reception control apparatus, a control unit generates DRX parameters, which are intermittent reception parameters, and transmits the generated DRX parameters to the mobile station apparatuses. Further, the DRX parameters include information on the timing at which to cause the mobile station apparatuses to enter an active state and are common to all of the mobile station apparatuses, where the active state is a state where reception of signals transmitted from the base station apparatus is enabled. Further, the scheduler transmits to the mobile station apparatuses a DRX command that operates to force these apparatuses to enter an inactive state.Type: ApplicationFiled: January 18, 2013Publication date: October 3, 2013Inventors: Toru IMAMURA, Kiyoshi MIYAZAWA, Yoshiyuki OOTA, Syuuichi OKADA, Hiroaki TAKASHIMA
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Publication number: 20130258962Abstract: A base station apparatus operable to communicate by using any of a plurality of frequency bands, each of which includes a plurality of unit bands, the apparatus includes a determiner that determines a unit band to which to assign data, according to a priority of the data, to a maximum data transfer rate of the data, to a distance between the base station apparatus and a mobile station apparatus to which to send the data, or to a number or tried receptions of a preamble signal that has been sent from the mobile station apparatus through a random access channel, and a transmitter that sends the data by using the determined unit band.Type: ApplicationFiled: March 13, 2013Publication date: October 3, 2013Applicant: FUJITSU LIMITEDInventor: Yoshiyuki OOTA
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Patent number: 8503406Abstract: Radio communication equipment performs radio communication with a first radio terminal group in a first period by using a frequency commonly for use by an adjacent base station, and with a second radio terminal group in a second period by using a frequency not commonly for use by the adjacent base station. The radio communication equipment includes a control unit to adjust time allocation of the first period and the second period; and a radio communication unit to perform radio communication with the first radio terminal group and the second radio terminal group according to the time allocation adjusted by the control unit.Type: GrantFiled: June 25, 2009Date of Patent: August 6, 2013Assignee: Fujitsu LimitedInventor: Yoshiyuki Oota
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Patent number: 8446853Abstract: Each mobile terminal apparatus measures receiving power or receiving quality of a signal received from a radio communication apparatus. If a plurality of mobile terminal apparatuses in which the receiving power or the receiving quality is lower than or equal to a determined threshold are detected, then a communication control apparatus selects a mobile terminal apparatus made to function as a relay station from the plurality of mobile terminal apparatuses detected on the basis of a result of measuring the receiving power or the receiving quality. The mobile terminal apparatus selected relays communication between the radio communication apparatus and a mobile terminal apparatus which does not function as a relay station.Type: GrantFiled: June 30, 2010Date of Patent: May 21, 2013Assignee: Fujitsu LimitedInventors: Masataka Umeda, Yoshiyuki Oota
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Patent number: 8406700Abstract: A mobile station includes a reception quality generating unit that generates the reception quality based on a reception quality measured for data transmitted after transmission of a preamble signal. The mobile station is in a mobile communication system in which, a radio base station transmits the data after transmission of the preamble signal and, after transmission of a signal and before transmission of a subsequent preamble signal from the radio base station, the mobile station transmits to the radio base station, reception quality of the signal transmitted from the radio base station, whereby a transmission parameter for data transmitted to the mobile station after transmission of the subsequent preamble signal can be changed.Type: GrantFiled: March 15, 2010Date of Patent: March 26, 2013Assignee: Fujitsu LimitedInventor: Yoshiyuki Oota
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Patent number: 8366870Abstract: The invention provides a plasma processing apparatus capable of minimizing the non-uniformity of potential distribution around wafer circumference, and providing a uniform process across the wafer surface. The apparatus is equipped with a focus ring formed of a dielectric, a conductor or a semiconductor and having RF applied thereto, the design of which is optimized for processing based on a design technique clarifying physical conditions for flattening a sheath-plasma interface above a wafer and the sheath-plasma interface above the focus ring. A surface voltage of the focus ring is determined to be not less than a minimum voltage for preventing reaction products caused by wafer processing from depositing thereon.Type: GrantFiled: May 9, 2011Date of Patent: February 5, 2013Assignee: Hitachi High-Technologies CorporationInventors: Ryoji Nishio, Tadamitsu Kanekiyo, Yoshiyuki Oota, Tsuyoshi Matsumoto
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Patent number: 8364096Abstract: For transmitting a common channel signal with characteristics with an approximated non-directivity, the common channel signal for all users is divided into sub-channel signals, corresponding to a number of antenna elements composing an array antenna, to be concurrently transmitted with non-directivity by using each antenna element. Individual channel signals, for each user, following the common channel signal with a desired directivity by using the antenna elements. Each sub-channel signal can be made a sub-channel signal obtained by dividing all sub-channel components composing the common channel signal for each sub-channel component by a predetermined number or dividing them depending on a receiving quality of each antenna element.Type: GrantFiled: September 23, 2009Date of Patent: January 29, 2013Assignee: Fujitsu LimitedInventors: Yoshiyuki Oota, Takanori Iwamatsu
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Publication number: 20120258671Abstract: A base station includes a first communication section configured to communicate a wireless signal with the mobile station and another base station, a second communication section configured to communicate a data signal with a core network being connected to the base station, a wireless relay function section configured to perform first control to relay the wireless signal to be communicated with the other base station between the other base station and the mobile station, a communication function section configured to perform second control to convert between a data signal and a wireless signal, and to transmit the converted data signal and the converted wireless signal, and a selection control section configured to select at least one of the first control and the second control to use for communication with the mobile station, based on a reception level of the wireless signal from the other base station.Type: ApplicationFiled: March 27, 2012Publication date: October 11, 2012Applicant: FUJITSU LIMITEDInventor: Yoshiyuki OOTA
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Patent number: 8249001Abstract: A base station assigns a subcarrier for downlink communications under Orthogonal Frequency Division Multiple Access. Before downlink communications with a mobile station, based on carrier sensing by the mobile station, the base station detects information concerning an available subcarrier from downlink signals using a modulating unit. The information concerning the available subcarrier is stored in a downlink-information sharing unit and is shared among the base station and the adjacent base stations. A downlink subcarrier setting unit sets the available subcarrier for downlink communications.Type: GrantFiled: September 11, 2008Date of Patent: August 21, 2012Assignee: Fujitsu LimitedInventors: Yoshiyuki Oota, Takanori Iwamatsu
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Publication number: 20110319108Abstract: A wireless communication device includes an antenna unit that transmits and receives wireless signals, and one or more processors configured to conduct communication with a base station and control displacement of a service area of the base station and a service area of the wireless communication device in response to throughput characteristics of a cell formed by the base station.Type: ApplicationFiled: June 16, 2011Publication date: December 29, 2011Applicant: FUJITSU LIMITEDInventor: Yoshiyuki OOTA
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Patent number: 8057634Abstract: The invention provides a plasma processing apparatus capable of minimizing the non-uniformity of potential distribution around wafer circumference, and providing a uniform process across the wafer surface. The apparatus is equipped with a focus ring formed of a dielectric, a conductor or a semiconductor and having RF applied thereto, the design of which is optimized for processing based on a design technique clarifying physical conditions for flattening a sheath-plasma interface above a wafer and the sheath-plasma interface above the focus ring. A surface voltage of the focus ring is determined to be not less than a minimum voltage for preventing reaction products caused by wafer processing from depositing thereon.Type: GrantFiled: July 30, 2004Date of Patent: November 15, 2011Assignee: Hitachi High-Technologies CorporationInventors: Ryoji Nishio, Tadamitsu Kanekiyo, Yoshiyuki Oota, Tsuyoshi Matsumoto
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Publication number: 20110209828Abstract: The invention provides a plasma processing apparatus capable of minimizing the non-uniformity of potential distribution around wafer circumference, and providing a uniform process across the wafer surface. The apparatus is equipped with a focus ring formed of a dielectric, a conductor or a semiconductor and having RF applied thereto, the design of which is optimized for processing based on a design technique clarifying physical conditions for flattening a sheath-plasma interface above a wafer and the sheath-plasma interface above the focus ring. A surface voltage of the focus ring is determined to be not less than a minimum voltage for preventing reaction products caused by wafer processing from depositing thereon.Type: ApplicationFiled: May 9, 2011Publication date: September 1, 2011Inventors: Ryoji NISHIO, Tadamitsu Kanekiyo, Yoshiyuki Oota, Tsuyoshi Matsumoto
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Publication number: 20110019606Abstract: Each mobile terminal apparatus measures receiving power or receiving quality of a signal received from a radio communication apparatus. If a plurality of mobile terminal apparatuses in which the receiving power or the receiving quality is lower than or equal to a determined threshold are detected, then a communication control apparatus selects a mobile terminal apparatus made to function as a relay station from the plurality of mobile terminal apparatuses detected on the basis of a result of measuring the receiving power or the receiving quality. The mobile terminal apparatus selected relays communication between the radio communication apparatus and a mobile terminal apparatus which does not function as a relay station.Type: ApplicationFiled: June 30, 2010Publication date: January 27, 2011Applicant: FUJITSU LIMITEDInventors: Masataka UMEDA, Yoshiyuki Oota
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Publication number: 20100302962Abstract: A wireless communication method for performing wireless communications between a wireless terminal and a wireless base station during a first time period or a second time period includes determining whether the first time period or the second time period is assigned to the wireless terminal, measuring a quality of a signal to be transmitted during the determined first or second time period, selecting either the first time period or the second time period according to the measured quality of the signal, and reporting selection data indicating the selected first or second time period or reporting measurement data indicating the measured quality of the signal to the wireless base station.Type: ApplicationFiled: April 28, 2010Publication date: December 2, 2010Applicant: FUJITSU LIMITEDInventor: Yoshiyuki OOTA
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Publication number: 20100167773Abstract: A mobile station includes a reception quality generating unit that generates the reception quality based on a reception quality measured for data transmitted after transmission of a preamble signal. The mobile station is in a mobile communication system in which, a radio base station transmits the data after transmission of the preamble signal and, after transmission of a signal and before transmission of a subsequent preamble signal from the radio base station, the mobile station transmits to the radio base station, reception quality of the signal transmitted from the radio base station, whereby a transmission parameter for data transmitted to the mobile station after transmission of the subsequent preamble signal can be changed.Type: ApplicationFiled: March 15, 2010Publication date: July 1, 2010Applicant: FUJITSU LIMITEDInventor: Yoshiyuki Oota