Patents by Inventor Hisao Nakano

Hisao Nakano 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).

  • Patent number: 10382096
    Abstract: A control unit (22) controls a filter (30) of a communication device (3a) by wired communication via a LCX (4a) to pass or cut off a signal in a wireless frequency band, to cause the LCX (4a) and LCX (4b) to function as a single antenna or a plurality of antennas.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 13, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiro Nakatsukasa, Yasunori Hoshihara, Hisao Nakano
  • Publication number: 20180351603
    Abstract: A control unit (22) controls a filter (30) of a communication device (3a) by wired communication via a LCX (4a) to pass or cut off a signal in a wireless frequency band, to cause the LCX (4a) and LCX (4b) to function as a single antenna or a plurality of antennas.
    Type: Application
    Filed: November 10, 2015
    Publication date: December 6, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiro NAKATSUKASA, Yasunori HOSHIHARA, Hisao NAKANO
  • Patent number: 10091742
    Abstract: The wireless communication device includes: a wireless communication unit issuing a request to increase or decrease transmission power to another device in such a way that a received signal strength of a radio wave transmitted from another device falls within a predetermined range, and performing a transmission power control of a wireless communication device in response to a request to increase or decrease transmission power from another device. Further, the wireless communication device includes: a control unit performing a control of decreasing the received signal strength of each of the wireless communication device and another device, when a communication state satisfies a condition for increasing the transmission power, to cause the wireless communication unit of the wireless communication device to issue the request to increase the transmission power to another device, and also cause another device to issue the request to increase the transmission power to the wireless communication device.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: October 2, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hisao Nakano
  • Publication number: 20180249425
    Abstract: The wireless communication device includes: a wireless communication unit issuing a request to increase or decrease transmission power to another device in such a way that a received signal strength of a radio wave transmitted from another device falls within a predetermined range, and performing a transmission power control of a wireless communication device in response to a request to increase or decrease transmission power from another device. Further, the wireless communication device includes: a control unit performing a control of decreasing the received signal strength of each of the wireless communication device and another device, when a communication state satisfies a condition for increasing the transmission power, to cause the wireless communication unit of the wireless communication device to issue the request to increase the transmission power to another device, and also cause another device to issue the request to increase the transmission power to the wireless communication device.
    Type: Application
    Filed: January 8, 2015
    Publication date: August 30, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hisao NAKANO
  • Publication number: 20180241420
    Abstract: A shield box unit installed inside a vehicle and storing a mobile wireless terminal blocks external radio waves.
    Type: Application
    Filed: November 11, 2015
    Publication date: August 23, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hisao NAKANO, Yasunori HOSHIHARA, Masahiro NAKATSUKASA
  • Patent number: 9756606
    Abstract: When a wireless communication device is performing wireless communications of real time data by using a wireless LAN method, and the degree of influence of paging a communications partner in an automatic connection operation for a Bluetooth method upon the wireless communications using the wireless LAN method is higher than a permissible upper limit, the wireless communication device changes the paging operation in such a that the degree of influence is reduced.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: September 5, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hisao Nakano
  • Patent number: 9642079
    Abstract: A wireless communication device 1 carries out wireless communications using different wireless communication schemes through antennas independent of each other. When it decides that a party on the other end is a wireless communication device using a single antenna system, it switches to a simultaneous operation that carries out wireless LAN and Bluetooth wireless communication in parallel, and when it does not decide that the party on the other end is a wireless communication device using a single antenna system, it switches to a time-division operation that carries out the wireless LAN and Bluetooth wireless communication in time division.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 2, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hisao Nakano
  • Publication number: 20170013592
    Abstract: When a wireless communication device is performing wireless communications of real time data by using a wireless LAN method, and the degree of influence of paging a communications partner in an automatic connection operation for a Bluetooth method upon the wireless communications using the wireless LAN method is higher than a permissible upper limit, the wireless communication device changes the paging operation in such a that the degree of influence is reduced.
    Type: Application
    Filed: May 15, 2014
    Publication date: January 12, 2017
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hisao NAKANO
  • Patent number: 9466162
    Abstract: An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: October 11, 2016
    Assignee: MITSUBISHI ELECTRIC COPORATION
    Inventors: Yoshihiro Nakai, Yasuaki Takimoto, Masahiro Abukawa, Takeshi Mitsui, Hisao Nakano
  • Patent number: 9451615
    Abstract: A wireless communication system includes APs 1 and 2 that perform communications using different frequency channels, and slave units 3 to 5 that connect with either one of the APs 1 and 2 to perform wireless communications. When detecting a radar wave which is a wireless signal of another wireless system, and stopping the communications which have been performed till then via a frequency channel, the AP1 commands the slave units 3 to 5 that have been performing wireless communications by using this frequency channel to switch their connection destinations to the AP 2 that performs communications using a different frequency channel, and the slave units 3 to 5 switch their connection destinations to the AP 2 according to the command from the AP 1.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: September 20, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hisao Nakano
  • Publication number: 20160081015
    Abstract: A wireless communication device 1 carries out wireless communications using different wireless communication schemes through antennas independent of each other. When it decides that a party on the other end is a wireless communication device using a single antenna system, it switches to a simultaneous operation that carries out wireless LAN and Bluetooth wireless communication in parallel, and when it does not decide that the party on the other end is a wireless communication device using a single antenna system, it switches to a time-division operation that carries out the wireless LAN and Bluetooth wireless communication in time division.
    Type: Application
    Filed: July 16, 2013
    Publication date: March 17, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hisao NAKANO
  • Patent number: 9253657
    Abstract: A wireless communication device includes first wireless communication unit 2 for performing wireless communication with information terminal 21 through wireless LAN, and for obtaining frequency channel of interference wave by detecting interference wave due to wireless communication through wireless LAN between information terminal 24 and portable information terminal 25; second wireless communication unit 3, third wireless communication unit 4, . . . , nth wireless communication unit 5 for performing wireless communication with mobile terminal 22 or wireless headphone 23 by Bluetooth or wireless audio; channel aggregation unit 10 for setting the frequency channel of first wireless communication unit 2 at the same frequency channel as the frequency channel of interference wave the first wireless communication unit 2 obtains; and assignment control unit 9 for allocating frequency channels of the second, third, . . .
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 2, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasunori Hoshihara, Hisao Nakano
  • Patent number: 9088340
    Abstract: A wireless communication apparatus includes: attenuators provided in wireless devices for attenuating an input level of a reception signal; a monitoring unit for monitoring communication states of the wireless devices; and a control unit that performs control to determine whether or not the input level of the reception signal of the wireless device to be controlled out of the wireless devices will be excessive because of a wireless communication to be performed by the second wireless device other than the wireless device to be controlled, based on the communication states of the wireless devices monitored by the monitoring unit and to attenuate the input level of the reception signal by operating the attenuator of the wireless device when determination is made that the input level of the reception signal will be excessive.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasunori Hoshihara, Hisao Nakano
  • Patent number: 9036501
    Abstract: A wireless communication device comprises: a detector configured to detect an interference wave and a frequency of the interference wave, the interference wave causing radio interference in the wireless communication; an interference avoidance controller configured to predict duration where the wireless communication is affected by radio interference due to the interference wave, and configured to issue a command for avoiding the radio interference due to the interference wave when the predicted duration exceeds a threshold time period; and a frequency controller configured to control frequencies used in the wireless communication to exclude the frequency of the interference wave in accordance with the command for avoiding the radio interference issued by the interference avoidance controller.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: May 19, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hisao Nakano, Yasunori Hoshihara
  • Publication number: 20150023271
    Abstract: A wireless communication system includes APs 1 and 2 that perform communications using different frequency channels, and slave units 3 to 5 that connect with either one of the APs 1 and 2 to perform wireless communications. When detecting a radar wave which is a wireless signal of another wireless system, and stopping the communications which have been performed till then via a frequency channel, the AP1 commands the slave units 3 to 5 that have been performing wireless communications by using this frequency channel to switch their connection destinations to the AP 2 that performs communications using a different frequency channel, and the slave units 3 to 5 switch their connection destinations to the AP 2 according to the command from the AP 1.
    Type: Application
    Filed: May 10, 2012
    Publication date: January 22, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventor: Hisao Nakano
  • Publication number: 20140349594
    Abstract: A wireless communication apparatus includes: attenuators provided in wireless devices for attenuating an input level of a reception signal; a monitoring unit for monitoring communication states of the wireless devices; and a control unit that performs control to determine whether or not the input level of the reception signal of the wireless device to be controlled out of the wireless devices will be excessive because of a wireless communication to be performed by the second wireless device other than the wireless device to be controlled, based on the communication states of the wireless devices monitored by the monitoring unit and to attenuate the input level of the reception signal by operating the attenuator of the wireless device when determination is made that the input level of the reception signal will be excessive.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 27, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasunori Hoshihara, Hisao Nakano
  • Publication number: 20140232524
    Abstract: An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.
    Type: Application
    Filed: November 22, 2011
    Publication date: August 21, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Nakai, Yasuaki Takimoto, Masahiro Abukawa, Takeshi Mitsui, Hisao Nakano
  • Patent number: 8649463
    Abstract: In UWB communication based on an MB-OFDM communication scheme, when a jamming interference is detected within a receiving frequency band, the frequency of a local signal LO is altered to a frequency that will cause the jamming to be converted to a frequency outside the pass band of an LPF.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: February 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hisao Nakano, Yasunori Hoshihara
  • Publication number: 20130208618
    Abstract: A wireless communication device comprises: a detector configured to detect an interference wave and a frequency of the interference wave, the interference wave causing radio interference in the wireless communication; an interference avoidance controller configured to predict duration where the wireless communication is affected by radio interference due to the interference wave, and configured to issue a command for avoiding the radio interference due to the interference wave when the predicted duration exceeds a threshold time period; and a frequency controller configured to control frequencies used in the wireless communication to exclude the frequency of the interference wave in accordance with the command for avoiding the radio interference issued by the interference avoidance controller.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 15, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hisao Nakano, Yasunori Hoshihara
  • Publication number: 20130184020
    Abstract: A wireless communication device includes first wireless communication unit 2 for performing wireless communication with information terminal 21 through wireless LAN, and for obtaining frequency channel of interference wave by detecting interference wave due to wireless communication through wireless LAN between information terminal 24 and portable information terminal 25; second wireless communication unit 3, third wireless communication unit 4, . . . , nth wireless communication unit 5 for performing wireless communication with mobile terminal 22 or wireless headphone 23 by Bluetooth or wireless audio; channel aggregation unit 10 for setting the frequency channel of first wireless communication unit 2 at the same frequency channel as the frequency channel of interference wave the first wireless communication unit 2 obtains; and assignment control unit 9 for allocating frequency channels of the second, third, . . .
    Type: Application
    Filed: January 28, 2011
    Publication date: July 18, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yasunori Hoshihara, Hisao Nakano