Patents by Inventor Koji Akita

Koji Akita 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: 9215004
    Abstract: A stationary proximity wireless communication apparatus has an electromagnetic-wave transmitting and receiving part comprising a first indicator that indicates a zone to place a portable proximity wireless communication apparatus and an antenna that is installed in the zone to emit electromagnetic waves having directivity in a direction of a recommended optimum position suitable to place the portable proximity wireless communication apparatus in the zone from a position different from the recommended optimum position, and a wireless communication part configured to perform modulation and demodulation processes of electromagnetic waves transmitted and received at the antenna.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: December 15, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Ogura, Koji Akita, Yukako Tsutsumi, Takayoshi Ito
  • Publication number: 20150357707
    Abstract: According to one embodiment, a wireless apparatus includes a first antenna and a second antenna. The first antenna is positioned on a first imaginary plane orthogonal to a rotation axis and includes a first main radiating element. The second antenna is positioned on a second imaginary plane orthogonal to the rotation axis and opposite to the first imaginary plane at a first space from the first imaginary plane and includes a second main radiating element. The second antenna is rotatable around the rotation axis and performs at least one of transmission and reception of electromagnetic wave to and from the first antenna, and at least one of the first main radiating element and the second main radiating element is displaced from the rotation axis.
    Type: Application
    Filed: June 10, 2015
    Publication date: December 10, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukako TSUTSUMI, Koji AKITA
  • Publication number: 20150350909
    Abstract: A card devices includes an authentication unit, a wireless communication unit, and a control unit. The authentication unit performs and authentication process with an external device via wired communication. The wireless communication unit performs wireless communication with the external device. The control unit controls the wireless communication unit to reduce radio waves radiated from the wireless communication unit when the control unit detects that the authentication process is being performed.
    Type: Application
    Filed: August 13, 2015
    Publication date: December 3, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji AKITA, Seiichiro HORIKAWA, Hideo KASAMI
  • Publication number: 20150349865
    Abstract: A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.
    Type: Application
    Filed: August 13, 2015
    Publication date: December 3, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ren SAKATA, Koji AKITA
  • Publication number: 20150351057
    Abstract: According to an embodiment, a signal conversion apparatus includes a control information generator and a selector. The control information generator generates first control information based on rate information indicating transmission rates of original signals. The first control information designates a first timing at which each of the original signals is sampled. The selector selects each of the sampled signals at a timing based on the first timing. The original signal group includes a first original signal at a first transmission rate and a second original signal at a second transmission rate. The first transmission rate is higher than the second transmission rate. The frequency of allocating the first timing to the first original signal is higher than a frequency of allocating the first timing to the second original signal.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji AKITA, Yukako TSUTSUMI, Hidenori OKUNI
  • Patent number: 9191188
    Abstract: According to one embodiment, a transmitting device includes a wireless transmitting unit which wirelessly transmits data. The transmitting device includes a wireless receiving unit which receives the data wirelessly transmitted by the wireless transmitting unit. The transmitting device includes a synchronization signal outputting unit which outputs a synchronization signal to a signal transmitting medium of an electric conductor. The transmitting device includes a synchronization outputting unit which receives the synchronization signal from the signal transmitting medium and outputs a signal including the data received by the wireless receiving unit according to the synchronization signal.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: November 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Akita, Takayoshi Ito, Koichiro Ban, Takeshi Tomizawa
  • Patent number: 9166298
    Abstract: According to one embodiment, a wireless device includes a circuit board, a semiconductor chip, a nonconductive layer, and a conductive film. The semiconductor chip includes a transmitting/receiving circuit and is mounted on the circuit board. The nonconductive layer is to seal the semiconductor chip. The conductive film is to cover a surface of the nonconductive layer, the conductive film being provided with a plurality of apertures serving as radiating elements. At least one aperture of the plurality of apertures is fed with power.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 20, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koh Hashimoto, Yukako Tsutsumi, Takayoshi Ito, Koji Akita
  • Patent number: 9160055
    Abstract: According to one embodiment, a wireless device is provided with a semiconductor chip, a substrate, an antenna, and a sealing material. The chip includes a wireless circuit. The substrate has a plurality of terminals arranged on a first surface and the chip arranged on a second surface. The antenna includes a radiation element and is electrically connected to the chip. The sealing material seals the chip and the antenna. A distance between a first wall of the sealing material substantially parallel to the second surface and the radiation element is equal to or more than a distance between a second wall of the sealing material substantially perpendicular to the second surface and the radiation element.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 13, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukako Tsutsumi, Koh Hashimoto, Takayoshi Ito, Koji Akita, Koji Ogura
  • Patent number: 9158360
    Abstract: In an embodiment, an electronic apparatus is mounted with a card unit including first and second devices driven with different driving voltages. The electronic apparatus includes: first and second voltage generating units, first and second control units. The first voltage generating unit generates a first driving voltage for driving the first device and a second driving voltage for driving the second device using electric power from the battery. The second voltage generating unit generates the first driving voltage and second driving voltage using electric power transmitted from the external device. The first control unit controls the first selection unit such that any one of the first driving voltage generated by the first voltage generating unit and the first driving voltage generated by the second voltage generating unit is selected depending on the electric power supply capability of the battery.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: October 13, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Seiichiro Horikawa, Koji Akita, Hideo Kasami
  • Patent number: 9141781
    Abstract: According to one embodiment, a card device includes an authentication unit, a wireless communication unit, and a control unit. The authentication unit performs an authentication process with an external device via wired communication. The wireless communication unit performs wireless communication with the external device. The control unit controls the wireless communication unit to reduce radio waves radiated from the wireless communication unit when the control unit detects that the authentication process is being performed.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: September 22, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji Akita, Seiichiro Horikawa, Hideo Kasami
  • Patent number: 9143214
    Abstract: A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: September 22, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ren Sakata, Koji Akita
  • Publication number: 20150253404
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a wireless communication unit, a radio frequency (RF) coil, and a specifying unit. The wireless communication unit includes an antenna and that transmits and receives a wireless signal through the antenna. The RF coil includes one or more antennas and that receives the wireless signal and to respond to the received wireless signal through the one or more antennas. The specifying unit that specifies the position and the orientation of the RF coil on the basis of a response result indicated by the response from the RF coil.
    Type: Application
    Filed: February 24, 2015
    Publication date: September 10, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Sadanori TOMIHA, Koji Akita, Hideo Kasami, Kazuya Okamoto
  • Publication number: 20150253394
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a radio frequency coil and a control signal transmitting unit. The radio frequency coil is that receives a magnetic resonance signal emitted from a patient as a result of an application of a radio frequency magnetic field thereto and to transmit the received magnetic resonance signal via a wireless communication. The control signal transmitting unit that transmits control information that collectively defines operations to be performed by the radio frequency coil during a predetermined repetition time period, to the radio frequency coil via a wireless communication, prior to the start of the operations performed during the predetermined repetition time period. Further, the radio frequency coil that receives the control information via a wireless communication and to perform the operations on the basis of the received control information.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 10, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Sadanori TOMIHA, Koji AKITA, Hideo KASAMI, Kazuya OKAMOTO
  • Publication number: 20150236811
    Abstract: According to an embodiment, a wireless communication device includes first and second wireless units. The first wireless unit includes a first reception antenna and a first transmission antenna in an enclosure, transmits a first wireless signal via the first transmission antenna, and receives a second wireless signal via the first reception antenna. The second wireless unit includes a second reception antenna and a second transmission antenna in the enclosure, transmits the second wireless signal via the second transmission antenna, and receives the first wireless signal via the second reception antenna. The first and second wireless units are disposed such that value of half distance between the first and second transmission antennas is smaller than value of a smaller one among a first shortest distance between the first transmission antenna and an inner wall of the enclosure, and a second shortest distance between the second transmission antenna and the inner wall.
    Type: Application
    Filed: January 20, 2015
    Publication date: August 20, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koji AKITA, Yukako TSUTSUMI, Koji OGURA
  • Patent number: 9105462
    Abstract: According to one embodiment, a semiconductor apparatus includes a substrate, a first semiconductor chip, a second semiconductor chip and a first converter. The first semiconductor chip includes a first surface and a second surface and is mounted on the substrate, the first surface is opposed to the substrate, the second surface is opposed to the first surface. The second semiconductor chip includes a first area and is stacked on the second surface. The first converter is arranged in the first area, the first converter is configured to perform at least one of analog-to-digital conversion and digital-to-analog conversion and arranged in the first area. A part of the first area does not overlap the first semiconductor chip when viewed from a direction perpendicular to the second surface.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: August 11, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukako Tsutsumi, Hidenori Okuni, Koji Akita
  • Patent number: 9052367
    Abstract: According to one embodiment, an apparatus includes a control unit and a coil unit. The control unit generates a first clock signal, generates a data signal to indicate an operating condition, modulates the first clock signal by the data signal to obtain a modulated signal, generates a clock transmission signal including the modulated signal, and emits the clock transmission signal. The coil unit converts the clock transmission signal into an electric signal, detects the modulated signal from the clock transmission signal, generates a second clock signal synchronous with the first clock signal from the modulated signal, detects an MR signal generated in a subject, digitizes, synchronously with the second clock signal, the MR signal, detects the data signal from the detected modulated signal by using of the second clock signal, controls the operating condition of the coil unit to be the operating condition indicated by the data signal.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: June 9, 2015
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Koji Akita, Takahiro Sekiguchi, Kazuya Okamoto, Sojuro Kato
  • Patent number: 8989659
    Abstract: A wireless communication device has a power receiving wireless communication unit configured to receive power and perform wireless communication utilizing the power, a storage unit configured to store a portion of the power, and a first wireless communication unit configured to perform wireless communication faster and more efficiently than the power receiving wireless communication unit by utilizing the power stored in the storage unit, when amount of the power stored in the storage unit exceeds a first reference level. The power receiving wireless communication unit includes a power receiver configured to receive power and supply a portion of the power to the storage unit, and a second wireless communication unit configured to perform wireless communication slower and less efficiently than the first wireless communication unit by utilizing the power received by the power receiver.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Akita, Takayoshi Ito, Masashi Suzuki, Hiroyasu Uchida
  • Publication number: 20150077289
    Abstract: According to one embodiment, a wireless communication device includes a first antenna. The wireless communication device includes a second antenna which performs at least one of transmission and reception of an electromagnetic wave to and from the first antenna while rotating at a predetermined position or revolving along a predetermined orbit. The first antenna is arranged such that an element of the first antenna is not to be parallel to a plane perpendicular to a polarization plane of the electromagnetic wave which is transmitted from one antenna toward the other antenna while the second antenna rotates or revolves.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 19, 2015
    Inventors: Takayoshi ITO, Koji AKITA
  • Publication number: 20150063492
    Abstract: A transmitter includes first generator to generate pilot source signal by modulating pilot sequence, second generator to generate data source signal with time length longer than that of pilot source signal by modulating data sequence, first cyclic shifter to perform cyclic shift of first shift amount to pilot source signal to generate first pilot signal, second cyclic shifter to performs cyclic shift of second shift amount to data source signal to generate first data signal, third cyclic shifter to perform cyclic shift of third shift amount to pilot source signal to generate second pilot signal, fourth cyclic shifter to perform cyclic shift of fourth shift amount to data source signal to generate second data signal, first transmit antenna to transmit first pilot signal and first data signal, and second transmit antenna to transmit second pilot signal and second data signal.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ren SAKATA, Koji Akita
  • Publication number: 20150065042
    Abstract: According to one embodiment, a communication apparatus includes a communication unit that establishes at least one proximity wireless connection with a communication partner apparatus. The communication apparatus includes a connection monitoring unit that monitors the communication unit and detect establishment of the wireless connection. The communication apparatus includes an execution control unit that identifies an establishment history of a plurality of the wireless connections based on a result of monitoring by the connection monitoring unit and, based on the establishment history, controls a process execution unit that executes at least one process.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 5, 2015
    Inventors: Koji AKITA, Hiroyasu UCHIDA, Takayoshi ITO