Patents by Inventor Kazunori Miyazawa

Kazunori Miyazawa 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).

  • Publication number: 20190305613
    Abstract: A wireless power reception device that can detect a position of a power receiving coil relative to a power transmitting coil irrespective of a connection state of a load is provided.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazunori OSHIMA, Ryo MIYAZAWA, Shinya OFUJI
  • Publication number: 20190305612
    Abstract: A wireless power reception device detects a power receiving coil position relative to a power transmitting coil while curbing an increase in power loss. The wireless power reception device includes: a power receiving coil magnetically coupled to the power transmitting coil; a first rectification and smoothing circuit rectifying an AC voltage supplied from the power receiving coil and outputs the rectified AC voltage to a load; first and second capacitors respectively connected to first and second transmission lines; a first resistor having one terminal connected to the first capacitor and the other terminal is supplied with a predetermined reference potential; a second resistor having one terminal connected to the second capacitor and the other terminal is supplied with the reference potential; and a position detecting circuit detecting the power receiving coil position relative to the power transmitting coil on the basis of first and second junction point potentials.
    Type: Application
    Filed: March 20, 2019
    Publication date: October 3, 2019
    Applicant: TDK CORPORATION
    Inventors: Kazunori OSHIMA, Ryo MIYAZAWA, Kenji FURUKAWA, Shinya OFUJI
  • Patent number: 10321492
    Abstract: A wireless communication apparatus for performing wireless communication between wireless devices via a wireless communication network, wherein the wireless communication apparatus comprises: a packet processor for generating a first packet including first control information and discrimination information for discriminating between the first control information for connecting to the wireless communication network a set wireless device, which is a wireless device for which the setting of instrument information required for accessing the wireless communication network has been performed, and second control information for connecting to the wireless communication network a setting-required wireless device, which is a wireless device for which there is a need to set instrument information, and a second packet including the discrimination information and the second control information; and a wireless communication unit for transmitting the first packet and the second packet generated by the packet processor to th
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: June 11, 2019
    Assignee: Yokogawa Electric Corporation
    Inventors: Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Patent number: 10305793
    Abstract: A communication device conforming with plural communication standards and having a storage storing a plurality of virtual stacks each having an application program and communication program that implements a protocol stack for communication by the application program. An executor executes the virtual stacks, and a switching controller switches the virtual stacks to be executed by performing a first processing in which at least one part of at least one of the virtual stacks is read from storage and stored into a memory of, and executed by, the executor. Then, in accordance with free capacity in the memory, at least one part of at least one of the virtual stacks executed in the first processing is deleted from memory. In a second processing at least one part of at least one of the virtual stacks is read from the storage and stored into the memory of, and executed by, the executor.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: May 28, 2019
    Assignee: Yokogawa Electric Corporation
    Inventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Patent number: 10110685
    Abstract: A position information authoring system according to one aspect of the present invention includes a plurality of position information devices in a plant and a position information authoring apparatus. Each of the plurality of position information devices is configured to input a position information into the position information authoring apparatus, the position information represents a three-dimensional absolute position of each of the plurality of position information devices. The position information authoring apparatus is configured to manage a physical position of each physical equipment in the plant and physical positions of the plurality of position information devices, based on a three-dimensional plant model which includes virtual equipments and marks a virtual position of each of the plurality of position information devices.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: October 23, 2018
    Assignee: Yokogawa Electric Corporation
    Inventors: Yosuke Ishii, Nobuo Okabe, Kazunori Miyazawa, Yukiyo Akisada
  • Patent number: 9997059
    Abstract: A data collection system includes a plurality of sensor modules each provided with a sensor unit, and a data collecting device. The data collecting device (200) is provided with: a clock output unit (201) which outputs a clock signal; an enable signal output unit (202) which outputs to a prescribed sensor module (100) an enable signal at intervals equal to or greater than the number of clock signals corresponding to the number of sensor modules (100); a counter (203) which counts the number of clock signals; and a sensor signal input unit (205) into which data output by the sensor modules (100) is input via a bus line, and which records said data in association with the count value.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: June 12, 2018
    Assignee: Yokogawa Electric Corporation
    Inventors: Tooru Katsurai, Kazunori Miyazawa
  • Publication number: 20170372598
    Abstract: A data collection system includes a plurality of sensor modules each provided with a sensor unit, and a data collecting device. The data collecting device (200) is provided with: a clock output unit (201) which outputs a clock signal; an enable signal output unit (202) which outputs to a prescribed sensor module (100) an enable signal at intervals equal to or greater than the number of clock signals corresponding to the number of sensor modules (100); a counter (203) which counts the number of clock signals; and a sensor signal input unit (205) into which data output by the sensor modules (100) is input via a bus line, and which records said data in association with the count value.
    Type: Application
    Filed: November 17, 2015
    Publication date: December 28, 2017
    Applicant: Yokogawa Electric Corporation
    Inventors: Tooru KATSURAI, Kazunori MIYAZAWA
  • Patent number: 9813109
    Abstract: A communication system constructs a communication network using a hopping pattern designated in a router advertisement between a wireless communication device that transmits the router advertisement designating the hopping pattern of channel hopping and an opposite party communication device that receives the router advertisement. The wireless communication device comprises a receiver configured to receive a router advertisement transmitted from another wireless communication device, a generator configured to generate the hopping pattern that does not use the same channel at the same time with respect to a hopping pattern that is designated by the router advertisement received by the receiver, and a transmitter configured to transmit the router advertisement that designates the hopping pattern generated by the generator.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: November 7, 2017
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yukiyo Akisada, Kazunori Miyazawa
  • Patent number: 9733979
    Abstract: A communication device communicating in conformance with a prescribed communication standard. The device includes a storage storing at least a first virtual program that includes a program implementing a first function of the communication device and a second virtual program that includes a program implementing a second function of the communication device. It also includes an executor configured to successively execute the first and second virtual programs, and a switching controller configured to read at least a part of either one of the first and second virtual programs from the storage, to store the part of either one of the first and second virtual programs into a memory of the executor, to execute the part of either one of the first and second virtual programs in the executor, thereby, to switch the first and second virtual programs to be executed in the executor.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: August 15, 2017
    Assignee: Yokogawa Electric Corporation
    Inventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Patent number: 9632062
    Abstract: An ultrasonic pipe measurement apparatus includes: a plurality of ultrasonic transceivers discretely disposed on a pipe wall of a pipe; and a control unit configured to control the plurality of ultrasonic transceivers and detect a generation point of damage caused in the pipe based on an ultrasonic signal exchanged between the ultrasonic transceivers.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 25, 2017
    Assignee: Yokogawa Electric Corporation
    Inventors: Yoshiaki Tanaka, Kazunori Miyazawa, Ken'ichi Kamada, Satoshi Kato, Yosuke Ishii, Sho Fujita, Yukiyo Akisada, Nobuo Okabe, Hiroaki Tanaka, Minako Terao
  • Publication number: 20170064016
    Abstract: A position information authoring system according to one aspect of the present invention includes a plurality of position information devices in a plant and a position information authoring apparatus. Each of the plurality of position information devices is configured to input a position information into the position information authoring apparatus, the position information represents a three-dimensional absolute position of each of the plurality of position information devices. The position information authoring apparatus is configured to manage a physical position of each physical equipment in the plant and physical positions of the plurality of position information devices, based on a three-dimensional plant model which includes virtual equipments and marks a virtual position of each of the plurality of position information devices.
    Type: Application
    Filed: August 24, 2016
    Publication date: March 2, 2017
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yosuke ISHII, Nobuo OKABE, Kazunori MIYAZAWA, Yukiyo AKISADA
  • Patent number: 9560637
    Abstract: A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: January 31, 2017
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Kazunori Miyazawa, Yukiyo Akisada, Yasuki Sakurai
  • Patent number: 9450816
    Abstract: A provisioning device connected to field devices, which are objects of provisioning, via a provisioning network separated from a target network may include a router advertisement unit that designates a field device, which is an object of provisioning, among the field devices located within a router advertisement zone of the provisioning device to transmit a router advertisement to the designated field device in a unicast mode, a connection control unit that controls a connection to the provisioning network of the field device that receives the router advertisement, and a parameter setting unit that performs setting of network parameters in the field device, the network parameters being managed by the field device.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: September 20, 2016
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yukiyo Akisada, Kazunori Miyazawa
  • Patent number: 9350651
    Abstract: A packet forwarding device performs forwarding of a packet between first and second wireless communication networks to which different identifiers are attached, and includes: a relay network that is interposed between the first and second wireless communication networks; a first processing unit that is connected to the first wireless communication network and performs first routing control by using first routing information in which the first wireless communication network and the relay network are defined as outgoing interfaces; and a second processing unit that is connected to the second wireless communication network and performs second route control by using second routing information in which the second wireless communication network and the relay network are defined as outgoing interfaces.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: May 24, 2016
    Assignee: Yokogawa Electric Corporation
    Inventors: Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Patent number: 9331849
    Abstract: An information setting method for a setting device includes the following processes. A first certificate and identification information are obtained from a wireless device to be caused to join a wireless network managed by a management device. The first certificate certifies that the wireless device is a formal wireless device and includes a first public key. The identification information is information that identifies the wireless device. A second certificate is obtained from the management device. The second certificate certifies that the management device is a formal management device and includes a second public key. Apparatus information required for the wireless device to join the wireless network is encoded using the first public key and is output to the wireless device. Management information including the apparatus information and the identification information associated with the apparatus information is encoded using the second public key and is output to the management device.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: May 3, 2016
    Assignee: Yokogawa Electric Corporation
    Inventors: Kazutoshi Kodama, Hirotsugu Gotou, Kazunori Miyazawa
  • Publication number: 20150172181
    Abstract: A communication device conforming with plural communication standards and having a storage storing a plurality of virtual stacks each having an application program and communication program that implements a protocol stack for communication by the application program. An executor executes the virtual stacks, and a switching controller switches the virtual stacks to be executed by performing a first processing in which at least one part of at least one of the virtual stacks is read from storage and stored into a memory of, and executed by, the executor. Then, in accordance with free capacity in the memory, at least one part of at least one of the virtual stacks executed in the first processing is deleted from memory. In a second processing at least one part of at least one of the virtual stacks is read from the storage and stored into the memory of, and executed by, the executor.
    Type: Application
    Filed: May 29, 2013
    Publication date: June 18, 2015
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Publication number: 20150089508
    Abstract: A communication device communicating in conformance with a prescribed communication standard includes a storage storing at least a first virtual program that includes a program implementing a first function of the communication device and a second virtual program that includes a program implementing a second function of the communication device, an executer configured to successively execute the first and second virtual programs, and a switching controller configured to read at least a part of either one of the first and second virtual programs from the storage, to store the part of either one of the first and second virtual programs into a memory of the executer, to execute the part of either one of the first and second virtual programs in the executer, after completion of the processing of the one virtual program, to delete at least a part of the one virtual program from the memory in accordance with free area in the memory, to read at least a part of the other virtual program of the first and second virtua
    Type: Application
    Filed: May 24, 2013
    Publication date: March 26, 2015
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa, Yasuki Sakurai
  • Publication number: 20150068311
    Abstract: An ultrasonic pipe measurement apparatus includes: a plurality of ultrasonic transceivers discretely disposed on a pipe wall of a pipe; and a control unit configured to control the plurality of ultrasonic transceivers and detect a generation point of damage caused in the pipe based on an ultrasonic signal exchanged between the ultrasonic transceivers.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 12, 2015
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Yoshiaki TANAKA, Kazunori MIYAZAWA, Ken'ichi KAMADA, Satoshi KATO, Yosuke ISHII, Sho FUJITA, Yukiyo AKISADA, Nobuo OKABE, Hiroaki TANAKA, Minako TERAO
  • Publication number: 20150055637
    Abstract: A management apparatus, which manages a wireless network constituted by a plurality of wireless communication devices each capable of performing a wireless communication using TDMA system, is characterized by comprising an extended link management unit that manages an extended link obtained by setting, to a link for which a channel and time slots to be used for wireless communications using the TDMA system are specified and for which a communication direction is determined, attribute information that characterizes the wireless communications performed by the wireless communication devices by use of the link.
    Type: Application
    Filed: April 10, 2013
    Publication date: February 26, 2015
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Kazunori Miyazawa, Yukiyo Akisada, Yasuki Sakurai
  • Patent number: 8913749
    Abstract: A wireless communication apparatus may include a first module that stores a first key used to encrypt and decrypt communication contents, a second module that stores a second key used to encrypt and decrypt the first key, the first key being encrypted in accordance with a public key encryption scheme, and a connection bus that connects the first module and the second module to each other Each of the first module and the second module may include an encryption processing unit that encrypts and decrypts information, which is transmitted and received via the connection bus, by using a third key that is different from the first key and the second key.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: December 16, 2014
    Assignee: Yokogawa Electric Corporation
    Inventor: Kazunori Miyazawa