Patents by Inventor Nobuyuki Ohba

Nobuyuki Ohba 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: 20180004666
    Abstract: A method for identifying, in a system including two or more computing devices that are able to communicate with each other, with each computing device having with a cache and connected to a corresponding memory, a computing device accessing one of the memories, includes monitoring memory access to any of the memories; monitoring cache coherency commands between computing devices; and identifying the computing device accessing one of the memories by using information related to the memory access and cache coherency commands.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Inventors: Nobuyuki Ohba, Atsuya Okazaki
  • Publication number: 20170353059
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device comprises: a calculating unit for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device and a power receiving device; a power transmitting unit for transmitting power via a power supply link with the power receiving device at an output not exceeding the maximum value; an anomaly detecting unit for detecting an anomaly in the power supply link on the basis of communication with the power receiving device via the communication link; and an output control unit for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Publication number: 20170353058
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device comprises: a calculating unit for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device and a power receiving device; a power transmitting unit for transmitting power via a power supply link with the power receiving device at an output not exceeding the maximum value; an anomaly detecting unit for detecting an anomaly in the power supply link on the basis of communication with the power receiving device via the communication link; and an output control unit for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Publication number: 20170353057
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device comprises: a calculating unit for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device and a power receiving device; a power transmitting unit for transmitting power via a power supply link with the power receiving device at an output not exceeding the maximum value; an anomaly detecting unit for detecting an anomaly in the power supply link on the basis of communication with the power receiving device via the communication link; and an output control unit for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Publication number: 20170222487
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device comprises: a calculating unit for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device and a power receiving device; a power transmitting unit for transmitting power via a power supply link with the power receiving device at an output not exceeding the maximum value; an anomaly detecting unit for detecting an anomaly in the power supply link on the basis of communication with the power receiving device via the communication link; and an output control unit for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Patent number: 9711998
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device (110) comprises: a calculating unit (122) for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device (110) and a power receiving device (150); a power transmitting unit (128) for transmitting power via a power supply link with the power receiving device (150) at an output not exceeding the maximum value; an anomaly detecting unit (126) for detecting an anomaly in the power supply link on the basis of communication with the power receiving device (150) via the communication link; and an output control unit (124) for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: July 18, 2017
    Assignee: International Business Machines Corporation
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Publication number: 20170192697
    Abstract: A system and method of avoiding loss of memory trace data, including monitoring a first-in-first-out (FIFO) buffer to determine if the FIFO buffer has overflowed due to memory access, determining whether an overflow of the FIFO buffer is acceptable, changing an operating mode of a target system if overflow of the FIFO buffer is unacceptable to avoid FIFO buffer overflow, and collecting memory trace data on the memory accesses.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventors: Seiji Munetoh, Nobuyuki Ohba
  • Publication number: 20170185551
    Abstract: Described is a computer-implemented method for preventing time out during data transfer to an input/output device. Dummy data is generated and transferred to the input/output device at a time during data transfer, such as when a time out event may occur that would end the data transfer. The transfer of dummy data prevents a time out event from occurring.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: Nobuyuki Ohba, Seiji Munetoh
  • Publication number: 20170075618
    Abstract: A method for managing main memory including DRAM and NVRAM in a computer depending on the operation state of the computer is provided. The method includes: (a) upon start of the computer, loading a program and the like into the DRAM, and loading predetermined read-only data and the like into the NVRAM; (b) in a state transition from a normal operation to a suspend state, moving data in the DRAM to the NVRAM; (c) in a state transition from the suspend state to the normal operation, reading data from the NVRAM for program execution; (d) in the case where a data write to the NVRAM occurs, stopping the data write, and moving data in a data area of the NVRAM subjected to the data write, to the DRAM; and (e) performing the data write to the DRAM to which the data has been moved.
    Type: Application
    Filed: November 11, 2016
    Publication date: March 16, 2017
    Applicant: International Business Machines Corporation
    Inventors: Seiji Munetoh, Nobuyuki Ohba
  • Patent number: 9552291
    Abstract: A method for managing main memory including DRAM and NVRAM in a computer depending on the operation state of the computer is provided. The method includes: (a) upon start of the computer, loading a program and the like into the DRAM, and loading predetermined read-only data and the like into the NVRAM; (b) in a state transition from a normal operation to a suspend state, moving data in the DRAM to the NVRAM; (c) in a state transition from the suspend state to the normal operation, reading data from the NVRAM for program execution; (d) in the case where a data write to the NVRAM occurs, stopping the data write, and moving data in a data area of the NVRAM subjected to the data write, to the DRAM; and (e) performing the data write to the DRAM to which the data has been moved.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: January 24, 2017
    Assignee: International Business Machines Corporation
    Inventors: Seiji Munetoh, Nobuyuki Ohba
  • Publication number: 20160049831
    Abstract: Provided are a power transmitting device, a power receiving device, a power supply system, and a power supply method able to supply electric power by emitting electromagnetic waves. A power transmitting device (110) comprises: a calculating unit (122) for calculating the maximum value for the emitted output of electromagnetic waves meeting exposure standards on the basis of a response delay time measured by the communication link between the power transmitting device (110) and a power receiving device (150); a power transmitting unit (128) for transmitting power via a power supply link with the power receiving device (150) at an output not exceeding the maximum value; an anomaly detecting unit (126) for detecting an anomaly in the power supply link on the basis of communication with the power receiving device (150) via the communication link; and an output control unit (124) for controlling the output on the basis of the detection of an anomaly in the power supply link.
    Type: Application
    Filed: February 28, 2014
    Publication date: February 18, 2016
    Inventors: Daiju Nakano, Nobuyuki Ohba, Kohji Takano
  • Publication number: 20150363311
    Abstract: A method for managing main memory including DRAM and NVRAM in a computer depending on the operation state of the computer is provided. The method includes: (a) upon start of the computer, loading a program and the like into the DRAM, and loading predetermined read-only data and the like into the NVRAM; (b) in a state transition from a normal operation to a suspend state, moving data in the DRAM to the NVRAM; (c) in a state transition from the suspend state to the normal operation, reading data from the NVRAM for program execution; (d) in the case where a data write to the NVRAM occurs, stopping the data write, and moving data in a data area of the NVRAM subjected to the data write, to the DRAM; and (e) performing the data write to the DRAM to which the data has been moved.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 17, 2015
    Inventors: Seiji Munetoh, Nobuyuki Ohba
  • Publication number: 20150331795
    Abstract: A method for identifying, in a system including two or more computing devices that are able to communicate with each other, with each computing device having with a cache and connected to a corresponding memory, a computing device accessing one of the memories, includes monitoring memory access to any of the memories; monitoring cache coherency commands between computing devices; and identifying the computing device accessing one of the memories by using information related to the memory access and cache coherency commands.
    Type: Application
    Filed: June 23, 2015
    Publication date: November 19, 2015
    Inventors: Nobuyuki Ohba, Atsuya Okazaki
  • Publication number: 20150331797
    Abstract: A method for identifying, in a system including two or more computing devices that are able to communicate with each other, with each computing device having with a cache and connected to a corresponding memory, a computing device accessing one of the memories, includes monitoring memory access to any of the memories; monitoring cache coherency commands between computing devices; and identifying the computing device accessing one of the memories by using information related to the memory access and cache coherency commands.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 19, 2015
    Inventors: Nobuyuki Ohba, Atsuya Okazaki
  • Patent number: 9071306
    Abstract: A communication apparatus, method, and system that reduce adverse effects caused by coupling between a transmission apparatus and a reception apparatus. The transmission apparatus includes a monitoring section that monitors an index value for a total amount of bias of a signal level in signals, a symbol identifying section that identifies a target symbol to be changed in a transmission symbol sequence comprising the signals, based on the index value for the total amount of bias of the signal level, a symbol position changing section that changes a position of the target symbol to a position of a signal point serving to reduce the bias of the signal level, and a transmission section that transmits signals included in the changed transmission symbol sequence to a reception apparatus.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: June 30, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yasuteru Kohda, Nobuyuki Ohba, Kohji Takano
  • Patent number: 8949296
    Abstract: A mirror file number corresponding to a file being requested is transmitted to a host OS. A determination is made as to whether or not caching is performed in the host OS, and reading of the data of the mirror file number is requested to a block device if it is determined that the data of the mirror file number that was transmitted is not cached. The block device acquires the memory address where the corresponding actual contents are stored, corresponding to the sector number, acquires the sequence number corresponding to the contents, changes the acquired sequence number, and reads the data of the acquired memory address. The read data is converted to data with a modified sequence number attached, and the data is provided to the host OS. If it is determined that the data is cached in the host OS, the cached data is provided.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: February 3, 2015
    Assignee: International Business Machines Corporation
    Inventors: Yasunao Katayama, Nobuyuki Ohba, Kohji Takano
  • Patent number: 8943362
    Abstract: A method for fast and efficient data downloading in wireless communications. The method includes ways to download file data of a large size from a server (access point) to a user's client (mobile device) at high speed and efficiency by using both mmWave wireless communication and conventional wireless communication (WiFi, 3G, etc.). A server transmits packetized file data to a client. The file data is transmitted as data packets via mmWave. In parallel, the server transmits check packets (roll-call packets) corresponding to the data packets. As a test at the time of establishing links, the latency for each communication line is measured. The receiver side, upon completion of receiving the check packets, checks whether their corresponding mmWave packets have arrived. If any corresponding mmWave packet has not arrived, it is determined that the mmWave packet has been lost and a retransmission request is immediately returned to the server via WiFi.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 27, 2015
    Assignee: International Business Machines Corporation
    Inventors: Yasunao Katayama, Nobuyuki Ohba, Kohji Takano
  • Patent number: 8913458
    Abstract: A method of monitoring signals is disclosed, wherein a plurality of command signals and address signals are consecutively expressed, as a measurement target. The method includes setting a strobe timing that has a predetermined initial value; calculating an error rate by monitoring the plurality of command signals, in accordance with the strobe timing; monitoring the plurality of address signals, and calculating a burst rate from a difference between the consecutive plurality of address signals, in accordance with the strobe timing; identifying timing where the calculated error rate and calculated burst rate are both optimized; and in the event the timing where both the calculated error rate and calculated burst rate are optimized cannot be identified, altering a predetermined value of the set strobe timing, and repeating the calculating, monitoring, and identifying.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: December 16, 2014
    Assignee: Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
    Inventors: Yasunao Katayama, Seiji Munetoh, Nobuyuki Ohba, Tadayuki Okada, Atsuya Okazaki
  • Patent number: 8902694
    Abstract: A method of monitoring signals is disclosed, wherein a plurality of command signals and address signals are consecutively expressed, as a measurement target. The method includes setting a strobe timing that has a predetermined initial value; calculating an error rate by monitoring the plurality of command signals, in accordance with the strobe timing; monitoring the plurality of address signals, and calculating a burst rate from a difference between the consecutive plurality of address signals, in accordance with the strobe timing; identifying timing where the calculated error rate and calculated burst rate are both optimized; and in the event the timing where both the calculated error rate and calculated burst rate are optimized cannot be identified, altering a predetermined value of the set strobe timing, and repeating the calculating, monitoring, and identifying.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Yasunao Katayama, Seiji Munetoh, Nobuyuki Ohba, Tadayuki Okada, Atsuya Okazaki
  • Publication number: 20140301434
    Abstract: A communication apparatus, method, and system that reduce adverse effects caused by coupling between a transmission apparatus and a reception apparatus. The transmission apparatus includes a monitoring section that monitors an index value for a total amount of bias of a signal level in signals, a symbol identifying section that identifies a target symbol to be changed in a transmission symbol sequence comprising the signals, based on the index value for the total amount of bias of the signal level, a symbol position changing section that changes a position of the target symbol to a position of a signal point serving to reduce the bias of the signal level, and a transmission section that transmits signals included in the changed transmission symbol sequence to a reception apparatus.
    Type: Application
    Filed: March 5, 2014
    Publication date: October 9, 2014
    Applicant: International Business Machines Corporation
    Inventors: Yasuteru Kohda, Nobuyuki Ohba, Kohji Takano