Patents by Inventor Yasutaka Ogawa
Yasutaka Ogawa 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: 10149395Abstract: A water-based organic solderability preservative includes (A) an imidazole compound, (B) an organic acid, (C) a complex coating formation aid, (D) an organic solvent and (E) water. The component (D) (organic solvent) has a solubility to water of 10 g/100 g or more at 20 degrees C. and a boiling temperature in a range from 100 degrees C. to 300 degrees C.Type: GrantFiled: May 10, 2017Date of Patent: December 4, 2018Assignee: TAMURA CORPORATIONInventors: Yasutaka Ogawa, Kazutaka Nakanami
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Publication number: 20170327702Abstract: A water-based organic solderability preservative includes (A) an imidazole compound, (B) an organic acid, (C) a complex coating formation aid, (D) an organic solvent and (E) water. The component (D) (organic solvent) has a solubility to water of 10 g/100 g or more at 20 degrees C. and a boiling temperature in a range from 100 degrees C. to 300 degrees C.Type: ApplicationFiled: May 10, 2017Publication date: November 16, 2017Inventors: Yasutaka Ogawa, Kazutaka Nakanami
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Publication number: 20100067438Abstract: When a control unit receives an authentication request from a terminal apparatus, the control unit transmits an authentication response to the terminal apparatus. When it receives a connection request from the terminal apparatus to which the authentication response has been transmitted, the control unit transmits a connection response to the terminal apparatus. The control unit carries out data communication with the terminal apparatus to which the connection response has been transmitted. When it receives a notification indicating that a connection has already been granted by another base station apparatus, in substitution for the authentication request, the control unit carries out data communication with the terminal apparatus.Type: ApplicationFiled: March 19, 2008Publication date: March 18, 2010Applicant: SANYO ELECTRIC CO.,LTDInventors: Ken Nakaoka, Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura
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Patent number: 7565171Abstract: A radio unit (2000) separates a signal from a specific terminal among signals from array antennas (#1-#4) based on a reception weight vector calculated by a reception weight vector calculator (20). A reception response vector calculator (22) derives a reception response vector of a propagation path for the signal from the specific terminal. A transmission response vector estimator (40) regards an estimation result of the reception response vector calculator (22) as a composite waveform of a function of a plurality of frequencies, determined in accordance with a Doppler frequency, and predicts a transmission response vector at a time point of transmission by obtaining coefficients of respective function. A transmission weight vector calculator (30) controls antenna directivity in transmission, based on a prediction result of the transmission response vector estimator (40).Type: GrantFiled: July 11, 2002Date of Patent: July 21, 2009Assignees: Sanyo Electric Co., Ltd., Japan as represented by President of Hokkaido UniversityInventors: Yoshiharu Doi, Yasutaka Ogawa, Takeo Ohgane
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Patent number: 7474692Abstract: When once determined to be free of any demodulation error by an interference removing unit provided user by user, a replica signal calculated by the interference removing unit is subtracted from an input signal vector, and a calculated user signal is output as it is as a final user signal. When it is determined by the interference removing unit that there is a demodulation error, the user signal is again calculated by the interference removing unit of an interference canceller of a next stage. As subtraction of the replica signal corresponding to the user signal having a demodulation error from the input signal vector is inhibited, precision of the interference wave removal can be improved.Type: GrantFiled: November 13, 2006Date of Patent: January 6, 2009Assignees: National University Corporation Hokkaido University, Sanyo Electric Co., Ltd.Inventors: Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura, Masashi Iwami, Jun Kitakado, Yoshiharu Doi
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Patent number: 7443341Abstract: A plurality of antennas transmit multicarrier signals composed of a plurality of streams. An IF unit acquires, per carrier, a channel matrix having elements the number of which is determined by the number of a plurality of transmitting antennas and the number of a plurality of receiving antennas provided in a receiving apparatus. A baseband processing unit derives a common autocorrelation matrix for the channel matrix acquired per carrier. The baseband processing unit derives a steering matrix by eigenvalue-decomposing the derived common autocorrelation matrix. The baseband processing unit derives, per carrier, weight vectors for a plurality of streams in a manner such that an orthonormalization is performed respectively on matrices obtained by operating the derived steering matrix on the channel matrix per carrier.Type: GrantFiled: May 31, 2007Date of Patent: October 28, 2008Assignees: Sanyo Electric Co., Ltd., National University Corporation Hokkaido UniversityInventors: Seigo Nakao, Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura, Hiroshi Nishimoto
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Patent number: 7423961Abstract: A correlator detects arriving timings of a desired wave and an interfering wave from a signal transmitted by the OFDM scheme. A reception response vector estimator estimates a first response vector for a signal arriving within a guard interval section from the head arriving wave and a second response vector for a signal arriving after the guard interval section from the head arriving wave out of the desired wave, and also a third response vector for a signal arriving within the guard interval section from the head arriving wave and a fourth response vector for a signal arriving after the guard interval section from the head arriving wave out of the interfering wave. An adaptive array block provides a weight vector based on a result of Fourier transform on the first to fourth response vectors.Type: GrantFiled: October 11, 2002Date of Patent: September 9, 2008Assignees: Sanyo Electric O., Ltd., National University Corporation Hokkaido UniversityInventors: Yasutaka Ogawa, Takeo Ohgane, Yoshiharu Doi
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Publication number: 20070280367Abstract: A plurality of antennas transmit multicarrier signals composed of a plurality of streams. An IF unit acquires, per carrier, a channel matrix having elements the number of which is determined by the number of a plurality of transmitting antennas and the number of a plurality of receiving antennas provided in a receiving apparatus. A baseband processing unit includes a means which derives a common autocorrelation matrix for the channel matrix acquired per carrier and a means which derives a steering matrix by eigenvalue-decomposing the derived common autocorrelation matrix. The baseband processing unit derives, per carrier, weight vectors for a plurality of streams in a manner such that an orthonormalization is performed respectively on matrices obtained by operating the derived steering matrix on the channel matrix per carrier.Type: ApplicationFiled: May 31, 2007Publication date: December 6, 2007Inventors: Seigo Nakao, Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura, Hiroshi Nishimoto
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Publication number: 20070058698Abstract: When once determined to be free of any demodulation error by an interference removing unit provided user by user, a replica signal calculated by the interference removing unit is subtracted from an input signal vector, and a calculated user signal is output as it is as a final user signal. When it is determined by the interference removing unit that there is a demodulation error, the user signal is again calculated by the interference removing unit of an interference canceller of a next stage. As subtraction of the replica signal corresponding to the user signal having a demodulation error from the input signal vector is inhibited, precision of the interference wave removal can be improved.Type: ApplicationFiled: November 13, 2006Publication date: March 15, 2007Applicants: Japan as Represented by President of Hokkaido University, SANYO ELECTRIC CO., LTD.Inventors: Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura, Masashi Iwami, Jun Kitakado, Yoshiharu Doi
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Patent number: 7145942Abstract: When once determined to be free of any demodulation error by an interference removing unit provided user by user, a replica signal calculated by the interference removing unit is subtracted from an input signal vector, and a calculated user signal is output as it is as a final user signal. When it is determined by the interference removing unit that there is a demodulation error, the user signal is again calculated by the interference removing unit of an interference canceller of a next stage. As subtraction of the replica signal corresponding to the user signal having a demodulation error from the input signal vector is inhibited, precision of the interference wave removal can be improved.Type: GrantFiled: October 10, 2000Date of Patent: December 5, 2006Assignees: Japan as represented By President Of Hokkaido University, Sanyo Electric Co., Ltd.Inventors: Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura, Masashi Iwami, Jun Kitakado, Yoshiharu Doi
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Patent number: 7011483Abstract: A load port includes an adapter-detecting sensor arranged at an upper portion of an opener. When the opener opens a lid of a FOUP, the adapter-detecting sensor detects whether a wafer adapter is mounted in the FOUP, and notifies a control unit of a semiconductor manufacturing apparatus of the result of the detection. The control unit determines the size of semiconductor wafers based on the result of the detection and carries out processing operation dependent on the size of the wafers in a processing chamber.Type: GrantFiled: March 18, 2003Date of Patent: March 14, 2006Assignee: Fujitsu LimitedInventors: Yasutaka Ogawa, Shigenori Kawase
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Publication number: 20040246889Abstract: A correlator detects arriving timings of a desired wave and an interfering wave from a signal transmitted by the OFDM scheme. A reception response vector estimator estimates a first response vector for a signal arriving within a guard interval section from the head arriving wave and a second response vector for a signal arriving after the guard interval section from the head arriving wave out of the desired wave, and also a third response vector for a signal arriving within the guard interval section from the head arriving wave and a fourth response vector for a signal arriving after the guard interval section from the head arriving wave out of the interfering wave. An adaptive array block provides a weight vector based on a result of Fourier transform on the first to fourth response vectors.Type: ApplicationFiled: April 13, 2004Publication date: December 9, 2004Inventors: Yasutaka Ogawa, Takeo Ohgane, Yoshiharu Doi
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Publication number: 20040176136Abstract: A radio unit (2000) separates a signal from a specific terminal among signals from array antennas (#1-#4) based on a reception weight vector calculated by a reception weight vector calculator (20). A reception response vector calculator (22) derives a reception response vector of a propagation path for the signal from the specific terminal. A transmission response vector estimator (40) regards an estimation result of the reception response vector calculator (22) as a composite waveform of a function of a plurality of frequencies, determined in accordance with a Doppler frequency, and predicts a transmission response vector at a time point of transmission by obtaining coefficients of respective function. A transmission weight vector calculator (30) controls antenna directivity in transmission, based on a prediction result of the transmission response vector estimator (40).Type: ApplicationFiled: January 12, 2004Publication date: September 9, 2004Inventors: Yoshiharu Doi, Yasutaka Ogawa, Takeo Ohgane
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Publication number: 20040007292Abstract: A nitriding method includes the steps of nitriding an object held under a nitriding gas atmosphere in a sealed furnace and applying vibration energy to one or both of the nitriding gas and the object W to facilitate nitriding. A nitriding apparatus includes a nitriding furnace for holding an object W to be nitrided in a sealed manner, means 30 for supplying a nitriding gas to the furnace, and means 2 for applying vibration to the atmosphere gas in the furnace 1 to faciliate nitriding. According to the method or apparatus, nitriding-resistant or complex-shaped materials can be nitrided at high efficiency and a nitrided layer can be formed at a lower temperature for a shorter time as compared with conventional processes.Type: ApplicationFiled: March 21, 2003Publication date: January 15, 2004Inventors: Hideto Fujita, Yoshiyuki Fujita, Ryoji Fujino, Yasutaka Ogawa
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Publication number: 20030199173Abstract: A load port includes an adapter-detecting sensor arranged at an upper portion of an opener. When the opener opens a lid of a FOUP, the adapter-detecting sensor detects whether a wafer adapter is mounted in the FOUP, and notifies a control unit of a semiconductor manufacturing apparatus of the result of the detection. The control unit determines the size of semiconductor wafers based on the result of the detection and carries out processing operation dependent on the size of the wafers in a processing chamber.Type: ApplicationFiled: March 18, 2003Publication date: October 23, 2003Applicant: FUJITSU LIMITEDInventors: Yasutaka Ogawa, Shigenori Kawase
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Patent number: 6590532Abstract: A radio equipment 1000 separates a signal of a specific terminal from signals from adaptive array antennas #1 to #4, based on a reception weight vector calculated by a reception weight vector calculator 20. Reception coefficient vector calculator 22 provides an impulse response of a signal propagation path of the specific terminal. A transmission coefficient vector estimator 32 predicts a propagation path at the time of transmission, from the result of estimation by the reception coefficient vector calculator 22. The transmission weight vector calculator 30 controls, based on the result of prediction by the transmission coefficient vector estimator 32, the antenna directivity at the time of transmission. Thus, degradation of error rate of the down link generated by the time difference between up/down links can be suppressed.Type: GrantFiled: December 18, 2001Date of Patent: July 8, 2003Assignees: Japan as represented by President of Hokkaido University, Sanyo Electric Co., Ltd.Inventors: Yasutaka Ogawa, Takeo Ohgane, Yoshiharu Doi