Patents by Inventor Mikio Hasegawa
Mikio Hasegawa 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: 11405072Abstract: A communication method includes generating at a first node, a message of a predetermined message temporal length that indicates an input value to be encoded and transmitting, at the first node, a signal including a pulse train corresponding to the generated message. The signal including the pulse train includes two pulses that define start and end of the message, respectively, and further two pulses that define within the message, a first time interval calculated from the input value in accordance with a first function and a second time interval calculated from the input value in accordance with a second function, respectively.Type: GrantFiled: July 16, 2019Date of Patent: August 2, 2022Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, TOKYO UNIVERSITY OF SCIENCE FOUNDATIONInventors: Ferdinand Peper, Kenji Leibnitz, Tetsuya Shimokawa, Mikio Hasegawa, Kaori Kuroda
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Publication number: 20210328623Abstract: A communication method includes generating at a first node, a message of a predetermined message temporal length that indicates an input value to be encoded and transmitting, at the first node, a signal including a pulse train corresponding to the generated message. The signal including the pulse train includes two pulses that define start and end of the message, respectively, and further two pulses that define within the message, a first time interval calculated from the input value in accordance with a first function and a second time interval calculated from the input value in accordance with a second function, respectively.Type: ApplicationFiled: July 16, 2019Publication date: October 21, 2021Inventors: Ferdinand Peper, Kenji Leibnitz, Tesuya Shimokawa, Mikio Hasegawa, Kaori Kuroda
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NETWORK SELECTION METHOD IN WIRELESS COMMUNICATION NETWORK AND WIRELESS COMMUNICATION NETWORK SYSTEM
Publication number: 20150032428Abstract: An object of the present invention is to optimize fairness of throughput in terminal devices in a wireless communication network, and to provide a technique for selecting combinations of the terminal devices and wireless network access. A method of selecting a destination network that optimizes throughput fairness of terminal devices in a wireless communication network system including a plurality of wireless access networks, and terminal devices that correspond to a plurality of types of wireless access networks, including: modeling a problem combining terminal devices to be optimized and a connection target network, as a minimum cost flow problem; calculating an exact solution of the minimum cost flow problem by computer operating means; and calculating the results of combining the terminal devices and the connection target network using network selection results operating means of a computer.Type: ApplicationFiled: February 28, 2013Publication date: January 29, 2015Inventors: Mikio Hasegawa, Takumi Matsui -
Patent number: 8239542Abstract: An analog signal input/output system in which an analog signal input terminal converts an input analog signal to a digital signal and transmits the digital signal to a host computer via a network, while a digital signal generated by the host computer is transmitted through the network to an analog signal output terminal and converted therein to an analog signal to be outputted. Two connections of upstream and downstream sockets between the host computer and the analog signal input/output device. These connections are selectively used to provide communication of control signals and data. Exemplary analog signals include input signals from a microphone, output signals to a speaker, and input/output data to/from a sensor, a measuring device and the like.Type: GrantFiled: November 19, 2004Date of Patent: August 7, 2012Assignee: National Institute of information and Communications TechnologyInventors: Mikio Hasegawa, Hiroyuki Morikawa, Udana Bandara, Masugi Inoue
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Patent number: 8055255Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. According to the system of the present invention, networks can be continuously switched by setting multicast for temporarily flowing data to the basic access network.Type: GrantFiled: November 19, 2003Date of Patent: November 8, 2011Assignee: National Institute of Information and Communications Technology, Incorporated Admistrative AgencyInventors: Masugi Inoue, Mikio Hasegawa, Khaled Mahmud, Homare Murakami
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Patent number: 7930387Abstract: A location information server system for acquiring the status of a user terminal in wireless communication network, comprising: a plurality of sensor means capable of communicating through a network; a priority database to location information from each sensor means; location information selecting means for selecting a location information having a high priority from overlapping location information with reference to the database; and a sensor information integration processing means which integrates acquisition information from at least two sensor means of the sensor means for acquiring the location information and the sensor means for acquiring identification information of a user terminal, and acquires the user terminal position wherein information from each means is accumulated in the location information server as terminal location information database and the location information server means includes a location information providing means capable of providing the sensor information to a predetermined nType: GrantFiled: March 7, 2005Date of Patent: April 19, 2011Assignee: National Institute of Information and Communications TechnologyInventors: Mikio Hasegawa, Masugi Inoue
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Patent number: 7756091Abstract: A gateway (GW) and a plurality of foreign agents (FA) are connected in a ring-like manner, and the procedures of (1) the GW receiving an IP packet, addressed from a corresponding node CN to a mobile node MNa; (2) the GW transferring the packet to a link L1 in one direction; (3) an FA1 transferring the received packet to a link L2 in the same direction; (4) FA1 furthermore transferring the received packet to a link L4, connected to MNa, if the destination address of the received packet is already registered in the visitor list; (5) an FA2 transferring the received packet to a link L3 in the same direction; (6) FA2 furthermore ending the process as it is if the destination address of the received packet is not registered; and (7) the GW discarding the received packet.Type: GrantFiled: March 17, 2004Date of Patent: July 13, 2010Assignee: National Institute of Information and Communications Technology, Incorporated Administrative AgencyInventors: Hidetoshi Yokota, Takeshi Kubo, Akira Idoue, Masugi Inoue, Mikio Hasegawa, Homare Murakami, Khaled Mahmud
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Patent number: 7725592Abstract: It is an object of the present invention to provide a communication system to provide a communication system which requires no special application for a correspondent node and has a service handoff function enabling a transfer destination terminal device to be freely used, and its configuration equipment. In order to realize this, the communication system includes a correspondent node delivering communication data which can be executed by a predetermined application, a proxy server device which receives the communication data from the node to execute the application, and transfers the service to a transfer destination terminal device, the transfer destination terminal device outputting the service, and a user terminal device, wherein the user terminal device transmits control information to the proxy server device, and thereby the proxy server device switches the transfer destination terminal device to perform service handoff.Type: GrantFiled: February 19, 2004Date of Patent: May 25, 2010Assignee: National Institute of Information and Communication TechnologyInventors: Mikio Hasegawa, Hiroyuki Morikawa, Masugi Inoue, Udana Bandara, Homare Murakami, Khaled Mahmud
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Patent number: 7706395Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. Then, a wireless communication terminal is provided with a position obtaining means and sends position information to a server, thereby it is possible to switch to an optimum network.Type: GrantFiled: November 19, 2003Date of Patent: April 27, 2010Assignee: National Institute of Information and Communications Technology, Incorporated Administrative AgencyInventors: Masugi Inoue, Mikio Hasegawa, Khaled Mahmud, Homare Murakami
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Patent number: 7603594Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. In the basic access network, there are executed signaling communication for obtaining available network information based on the position information of a terminal and communication by SIP (Session Initiation Protocol) for executing exchange of a subscribe request signal between terminals and negotiation of communication. This arrangement makes it possible to connect between terminals by a media application on peer to peer.Type: GrantFiled: November 19, 2003Date of Patent: October 13, 2009Assignee: National Institute of Information and Communications Technology, Incorporated Administrative AgencyInventors: Masugi Inoue, Mikio Hasegawa, Khaled Mahmud, Homare Murakami
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Publication number: 20080195730Abstract: A location information server system for acquiring the status of a user terminal in wireless communication network, comprising: a plurality of sensor means capable of communicating through a network; a priority database to location information from each sensor means; location information selecting means for selecting a location information having a high priority from overlapping location information with reference to the database; and a sensor information integration processing means which integrates acquisition information from at least two sensor means of the sensor means for acquiring the location information and the sensor means for acquiring identification information of a user terminal, and acquires the user terminal position wherein information from each means is accumulated in the location information server as terminal location information database and the location information server means includes a location information providing means capable of providing the sensor information to a predetermined nType: ApplicationFiled: March 7, 2005Publication date: August 14, 2008Inventors: Mikio Hasegawa, Masugi Inoue
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Publication number: 20080175214Abstract: Wireless communication system includes wireless communication terminal, basic access network terminal and network server and the basic access network terminal and wireless communication terminal have a communication path. This configuration provides simple, smooth hand over technology between different kinds of networks and hand off technology for hand off of service between terminals located nearby physically and further wireless communication system which integrates these.Type: ApplicationFiled: March 7, 2005Publication date: July 24, 2008Inventors: Mikio Hasegawa, Masugi Inoue
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Publication number: 20080016223Abstract: There is disclosed an arrangement wherein an analog signal input terminal converts an input analog signal to a digital signal and transmits the digital signal to a host computer via a network, while a digital signal generated by the host computer is transmitted through the network to an analog signal output terminal and converted therein to an analog signal to be outputted. There are provided two connections of upstream and downstream sockets between the host computer and the analog signal input/output device. These connections are selectively used to realize excellent communication of control signals and data. Particularly, such analog signals may include input signals from a microphone, output signals to a speaker, and input/output data to/from a sensor, a measuring device and the like.Type: ApplicationFiled: November 19, 2004Publication date: January 17, 2008Inventors: Mikio Hasegawa, Hiroyuki Morikawa, Udana Bandara, Masugi Inoue
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Patent number: 7246430Abstract: In an electronic component mounting apparatus, a vertical load and horizontal loads applied to an electronic component are detected by a load sensor that has piezoelectric elements provided in a stack in a mounting direction of the electronic component. Therefore, a size in a horizontal direction of the load sensor can be reduced, and a load applied to the electronic component can be detected at a neighborhood of a mounting position of the electronic component. Moreover, by comparing a position, in a two-dimensional space in which load values in an X-direction and Y-direction of the horizontal load serve as coordinate values, with a tolerance range in the two-dimensional space, a mounting failure can be detected from a deviation in the horizontal loads.Type: GrantFiled: June 2, 2004Date of Patent: July 24, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takahiro Yonezawa, Ken Kobayashi, Mikio Hasegawa, Hiroshi Nasu, Makoto Imanishi, Katsuhiko Watanabe
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Publication number: 20070118585Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. The basic access network executes signaling communication in which communication is controlled so as to be continuously switched, whereas the wireless access network executes data communications other than the signaling communication. Then, a wireless communication terminal is provided with a position obtaining means and sends position information to a server, thereby it is possible to switch to an optimum network.Type: ApplicationFiled: November 19, 2003Publication date: May 24, 2007Applicant: National Institute of Information and CommunicatioInventors: Masugi Inoue, Mikio Hasegawa, Khaled Mahmud, Homare Murakami
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Publication number: 20060268817Abstract: A gateway (GW) and a plurality of foreign agents (FA) are connected in a ring-like manner, and the procedures of (1) the GW receiving an IP packet, addressed from a corresponding node CN to a mobile node MNa; (2) the GW transferring the packet to a link L1 in one direction; (3) an FA1 transferring the received packet to a link L2 in the same direction; (4) FA1 furthermore transferring the received packet to a link L4, connected to MNa, if the destination address of the received packet is already registered in the visitor list; (5) an FA2 transferring the received packet to a link L3 in the same direction; (6) FA2 furthermore ending the process as it is if the destination address of the received packet is not registered; and (7) the GW discarding the received packet.Type: ApplicationFiled: March 17, 2004Publication date: November 30, 2006Inventors: Hidetoshi Yokota, Takeshi Kubo, Akira Idoue, Masugi Inoue, Mikio Hasegawa, Homare Murakami, Khaled Mahmud
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Publication number: 20050071991Abstract: In the electronic component mounting apparatus, a vertical load and horizontal loads applied to an electronic component are detected by a load sensor that have piezoelectric elements provided in a stack in the mounting direction of the electronic component. Therefore, the size in the horizontal direction of the load sensor can be reduced, and the load applied to the electronic component can be detected at the neighborhood of the mounting position of the electronic component. Moreover, by comparing a position in a two-dimensional space in which the load values in the X-direction and the Y-direction of the horizontal load are served as coordinate values with a tolerance range in the two-dimensional space, mounting failure can be detected from a deviation in the horizontal loads.Type: ApplicationFiled: June 2, 2004Publication date: April 7, 2005Inventors: Takahiro Yonezawa, Ken Kobayashi, Mikio Hasegawa, Hiroshi Nasu, Makoto Imanishi, Katsuhiko Watanabe
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Publication number: 20030048773Abstract: To create a network that can seamlessly integrate a plurality of wireless communication systems to provide more efficient and advanced service and, in particular, to provide a common platform for various radio communication networks A common core network has a mobility manger 47 that supports roaming mobile hosts and a resource manager 46 that coordinates traffic distribution. The common core network allows roaming within a homogeneous radio communication network and between heterogeneous radio communication networks while ensuring service quality. In one area, the common core network enables Internet 33 access via a gateway router 32. A plurality of common core network structures (31, 31′), each of which is the same as that residing in one area, are each arranged in corresponding areas via the Internet.Type: ApplicationFiled: March 7, 2002Publication date: March 13, 2003Inventors: Gang Wu, Mikio Hasegawa, Homare Murakami, Mitsuhiko Mizuno
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Patent number: 5354179Abstract: A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from atmospheric pressure by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control through mechanical contact thereof with a gear or the like. In addition, hydrostatic bearings are employed for supporting the rotary shaft to avoid mechanical abrasion and the use of lubricant oil.Type: GrantFiled: December 10, 1992Date of Patent: October 11, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Teruo Maruyama, Tatsuhisa Taguchi, Yoshikazu Abe, Mikio Hasegawa
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Patent number: 5341286Abstract: A current detecting method in a case of effecting the digital current control of a motor by a PWM switching system, wherein the current feedback control time and the PWM period are synchronized, and the current for each of the current taking in PWM periods at a time established with respect to the reference signal for determining the PWM period is detected, so that the influence of the pulsation of the current by the PWM switching system may be reduced, and the performance improvement in the digital current feedback control may be improved.Type: GrantFiled: July 23, 1992Date of Patent: August 23, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Inoue, Mikio Hasegawa