Patents by Inventor Takaaki Sato
Takaaki Sato 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: 7236787Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: GrantFiled: April 24, 1998Date of Patent: June 26, 2007Assignee: NTT Mobile Communications Network, Inc.Inventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20070127556Abstract: A RAKE reception device capable of allocating an appropriate number of fingers to a channel. In this device, a selection control section (301) sets a finger (304) allocated to the channel from the channel communication state and a control signal based on this setting is output to a synchronization processing section (302) and to a selection switch (303). According to the control signal, the synchronization processing section (302) detects a path and a spread code phase in a reception signal and allocates the detected path to the finger (304) which has been set. The finger (304) which has been set de-spreads the signal of the path allocated and performs coherent detection. According to the control signal, the selection switch (303) switches the connection between the finger (304) and a maximum ratio combining section (307) so that the output from the finger (304) is output to the maximum ratio combining section (307).Type: ApplicationFiled: February 3, 2004Publication date: June 7, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventor: Takaaki Sato
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Patent number: 7193978Abstract: A radio channel setting control method for communications between a base-station apparatus and a mobile-station apparatus in a mobile communications system employing a CDMA scheme comprising the steps of: a) determining whether or not a spread code used for the communications can be allocated; b) determining whether or not a predetermined hardware device can be allocated; c) determining whether or not a radio resource can be allocated; d) setting the radio channel between the base-station apparatus and mobile-station apparatus when it is determined that the spread code, predetermined hardware device and radio resource can be allocated.Type: GrantFiled: February 12, 2002Date of Patent: March 20, 2007Assignee: NTT DoCoMo, Inc.Inventors: Yoshihiro Ishikawa, Seizo Onoe, Takaaki Sato, Yoshitaka Hiramoto, Takehiro Nakamura
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Publication number: 20070058589Abstract: A branch candidate selecting method by a mobile station and a diversity handover control method on a network side in DHO performance are provided which consider a maximum cable branch number and maximum radio branch number of the mobile station, when the mobile station detects the plurality of addition branch candidates and deletion branch candidates. The mobile station inserts a plurality of addition branch candidates and deletion branch candidates, that is, all the DHO candidates into one handover trigger signal, and notifies the network. The addition branch candidates are put into addition information parameters in the handover trigger signal, and the deletion branch candidates are put into deletion information parameters. To simplify processing on the network side, the network side separates the addition branch candidates from the deletion branch candidates, and carries out sequential processing of them independently.Type: ApplicationFiled: October 31, 2006Publication date: March 15, 2007Applicant: NTT DoCoMo, Inc.Inventors: Tomoyuki Ohtani, Motoshi Tamura, Takaaki Sato
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Publication number: 20070054266Abstract: A chemical sensor utilizing a chemical receptor (for example, one stimulating the sense of taste or smell) is provided. More specifically speaking, such a receptor is introduced into cells and the cells are immobilized on a support to form a chip. This chip is then employed as a component of a sensor. This sensor shows a reaction almost the same as the body's perception of the taste or smell or sense, thereby enabling analysis. Thus, it is also usable as an artificial sensory organ. Moreover, this sensor is usable in diagnosis, which imparts a high industrial usefulness to it.Type: ApplicationFiled: May 28, 2003Publication date: March 8, 2007Applicant: NATIONAL INSTITUTE of ADVANCED INDUSTRIAL SCIENCE and TECHNOLOGYInventors: Takaaki Sato, Junzo Hirono, Hiroshi Hamana, Masato Miyake, Tomohiro Yoshikawa, Jun Miyake
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Patent number: 7187929Abstract: A radio link controlling apparatus configured to maintain communication quality at the time of setting a communication line. The radio link controlling apparatus includes a communication request receiving device for receiving a communication request including information about a service type, transmitted from a mobile terminal; a communication start timing determining device for determining communication start timing by the communication channel based on the information about the service type in the communication request received by the communication request receiving device; a control signal generating device for generating a control signal including the information of the communication start timing determined by the communication start timing determining device; and a control signal transmitting device for transmitting the control signal generated by the control signal generating device, to the mobile terminal by the control channel.Type: GrantFiled: January 16, 2003Date of Patent: March 6, 2007Assignee: NTT DoCoMo, Inc.Inventors: Kazunori Obata, Takaaki Sato
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Publication number: 20060293054Abstract: A radio control apparatus 10 is provided with a call management system 18 configured so that, when a mobile station in communication with a first base station by a first communication link requests diversity handover with a second base station, the call management system 18 retrieves a potential information rate that is not higher than an information rate of the first communication link and that is highest, from an information rate table 31 storing information about information rates of communication links securable in the second base station under other radio control apparatus; and a link management system 20 configured so that, when the potential information rate is lower than that of the first communication link, the link management system 20 instructs the first base station to change the first communication link to a second communication link communicable at the potential information rate; the call management system 18 requests the other radio control apparatus to secure a third communication link communiType: ApplicationFiled: November 21, 2005Publication date: December 28, 2006Applicant: NTT DoCoMo, IncInventors: Kazunori Obata, Takaaki Sato
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Publication number: 20060264207Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: ApplicationFiled: April 5, 2006Publication date: November 23, 2006Applicant: NTT Mobile Communications Network, Inc.Inventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20060251038Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: ApplicationFiled: April 6, 2006Publication date: November 9, 2006Applicant: NTT Mobile Communications Network, IncInventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20060199578Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: ApplicationFiled: March 28, 2006Publication date: September 7, 2006Applicant: NTT Mobile Communications Network, Inc.Inventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20060194583Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: ApplicationFiled: March 30, 2006Publication date: August 31, 2006Applicant: NTT Mobile Communications Network, Inc.Inventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20060178167Abstract: When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover.Type: ApplicationFiled: April 4, 2006Publication date: August 10, 2006Applicant: NTT Mobile Communications Network, Inc.Inventors: Motoshi Tamura, Mutsumaru Miki, Akiko Okamoto, Kenya Kusunose, Akihiro Uchikoshi, Daisuke Igarashi, Katsuhiko Yamagata, Takaaki Sato, Junichiro Hagiwara, Yasuyuki Watanabe, Takuya Hamajima, Masafumi Hata, Nobutaka Ishikawa, Yoshiyuki Yasuda, Kazufumi Yunoki, Nobuhide Uchiyama
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Publication number: 20060128386Abstract: A branch candidate selecting method by a mobile station and a diversity handover control method on a network side in DHO performance are provided which consider a maximum cable branch number and maximum radio branch number of the mobile station, when the mobile station detects the plurality of addition branch candidates and deletion branch candidates. The mobile station inserts a plurality of addition branch candidates and deletion branch candidates, that is, all the DHO candidates into one handover trigger signal, and notifies the network. The addition branch candidates are put into addition information parameters in the handover trigger signal, and the deletion branch candidates are put into deletion information parameters. To simplify processing on the network side, the network side separates the addition branch candidates from the deletion branch candidates, and carries out sequential processing of them independently.Type: ApplicationFiled: February 2, 2006Publication date: June 15, 2006Inventors: Tomoyuki Ohtani, Motoshi Tamura, Takaaki Sato
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Patent number: 7035639Abstract: A radio control apparatus 10 is provided with a call management system 18 configured so that, when a mobile station in communication with a first base station by a first communication link requests diversity handover with a second base station, the call management system 18 retrieves a potential information rate that is not higher than an information rate of the first communication link and that is highest, from an information rate table 31 storing information about information rates of communication links securable in the second base station under other radio control apparatus; and a link management system 20 configured so that, when the potential information rate is lower than that of the first communication link, the link management system 20 instructs the first base station to change the first communication link to a second communication link communicable at the potential information rate; the call management system 18 requests the other radio control apparatus to secure a third communication link communiType: GrantFiled: January 17, 2003Date of Patent: April 25, 2006Assignee: NTT DoCoMo, Inc.Inventors: Kazunori Obata, Takaaki Sato
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Publication number: 20050255807Abstract: A base station apparatus which transmits packets always using a modulation and coding scheme suitable for channel quality, and increases the throughput in the radio communication system. In the apparatus, radio reception section 104 receives a radio transmission signal including channel quality information transmitted from a communication terminal apparatus via reception antenna 102, and performs predetermined radio reception processing. Demodulation section 106 demodulates the radio transmission signal subjected to the radio reception processing, and extracts the channel quality information. A setting unit is comprised of channel quality information storage section 108, judgment section 110 and MCS determination section 112, and sets a modulation and coding scheme based on a plurality of received pieces of channel quality information.Type: ApplicationFiled: March 8, 2004Publication date: November 17, 2005Inventors: Katsuhiko Araki, Takaaki Sato
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Publication number: 20050246963Abstract: A weather strip includes a trim body having a generally U-shaped cross section, a hollow seal portion that protrudes from an outside surface of the trim body, and a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body. The weather strip is mounted on the vehicle body such that the trim body is held by a flange provided at a periphery of a door opening of a motor vehicle. The weather strip is formed by extrusion molding such that the length of the holding lip is changed in a plurality of steps in accordance with the thickness of the flange.Type: ApplicationFiled: July 12, 2005Publication date: November 10, 2005Inventors: Harumi Kogiso, Kiminori Mine, Masaki Ohashi, Takaaki Sato, Tomofumi Nishikawa, Masahiro Nozaki, Toshihiro Nahara
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Patent number: 6950423Abstract: When packet sending and receiving apparatus 21 sets a connection, timing control apparatus 22 generates a timing information Tf as the packet is dispersed equivalently. Timing control apparatus 22 notices the timing information Tf to packet sending and receiving apparatus 21 and base station 3. Packet sending and receiving apparatus 21 carries out a packet generating processing in accordance with a frame offset value which is indicated by the timing information Tf. Therefore, the packets in which a packet transmission timing is averaged in a packet transmission period arrives to packet multiplex apparatus 23. Consequently, it is possible to decrease a waiting time of the packet multiplex transmission. Therefore, it is possible to use efficiency a transmission link L1, while being satisfied the required service quality.Type: GrantFiled: September 11, 1998Date of Patent: September 27, 2005Assignee: NTT Mobile Communications Newtork, Inc.Inventors: Hiroshi Kawakami, Motoshi Tamura, Takaaki Sato
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Publication number: 20050194574Abstract: There are provided aluminum elements covered on their surfaces with a coating film free from harmful hexavalent chromium compounds and fluorine compounds. Particularly, aluminum dicast and aluminum cast materials having excellent paint adherence and corrosion resistance are provided. The coating film for aluminum elements comprises (i) chromium, (ii) zinc and (iii) cobalt and/or titanium with 95% by mass or more of said chromium being a trivalent chromium.Type: ApplicationFiled: February 24, 2005Publication date: September 8, 2005Inventors: Masaaki Yamamuro, Takaaki Sato, Atsushi Kaneko
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Patent number: 6939679Abstract: Agents for use in screening of medicaments for treatment, prevention and/or diagnosis of apoptosis associated diseases are provided which comprise an apoptosis related protein binding to NADE (p76NTR-associated cell death executor) or a DNA encoding said protein.Type: GrantFiled: September 13, 2000Date of Patent: September 6, 2005Assignee: RikenInventors: Takaaki Sato, Shinji Irie
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Patent number: 6935072Abstract: A weather strip includes a trim body having a generally U-shaped cross section, a hollow seal portion that protrudes from an outside surface of the trim body, and a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body. The weather strip is mounted on the vehicle body such that the trim body is held by a flange provided at a periphery of a door opening of a motor vehicle. The weather strip is formed by extrusion molding such that the length of the holding lip is changed in a stepped manner in accordance with the thickness of the flange.Type: GrantFiled: July 12, 2002Date of Patent: August 30, 2005Assignee: Toyoda Gosei Co., Ltd.Inventors: Harumi Kogiso, Kiminori Mine, Masaki Ohashi, Takaaki Sato, Tomofumi Nishikawa, Masahiro Nozaki, Toshihiro Nahara