Patents by Inventor Hiroki Fujita

Hiroki Fujita 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: 9155072
    Abstract: The present invention provides a wireless base station (eNB1-1) that sets a first SRS transmission frequency band as a transmission frequency band for SRS at a first SSF timing and sets the first SRS transmission frequency band as the transmission frequency band for SRS at a second SSF timing, within the time for one frame. In this way, all frequency bands (allocatable frequency bands) for usable downstream resource blocks in wireless communications between the wireless base station (eNB1-1) and a serving wireless terminal (UE2-1) are covered by the first SRS transmission frequency band and the second SRS transmission frequency band.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: October 6, 2015
    Assignee: KYOCERA Corporation
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita
  • Publication number: 20150268192
    Abstract: A method for setting a temperature rising profile of a sensor element in the activation of a gas sensor is capable of quickly increasing the temperature of the sensor element while reliably preventing or reducing the occurrence of a crack. The method includes Weibull plotting a failure rate that is a cumulative frequency at which a crack occurs as a result of the rapid temperature rising of the sensor element, identifying a temperature-rising-rate upper limit from the plotting results, determining, based on the temperature-rising-rate upper limit, a temperature-rise upper limit curve, and determining, as an appropriate function, a temperature rising profile in a range in which a temperature rising rate at an appropriate temperature does not exceed values on the temperature-rising-rate upper limit curve for the temperature.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 24, 2015
    Inventors: Naoya SAITO, Takayuki SEKIYA, Hiroki FUJITA
  • Publication number: 20150268188
    Abstract: A gas sensor includes a blocking portion 65 including an inner blocking layer 66 and outer blocking layer 67. The inner blocking layer 66 covers at least part of an exposed portion where solid-electrolyte layers are exposed as inner surfaces of a third internal cavity 61. The outer blocking layer 67 covers at least part of a nearest portion 6a that is at the shortest distance from the third internal cavity 61 among portions of outer surfaces of a multilayer structure where the solid-electrolyte layers are exposed. The inner blocking layer 66 and the outer blocking layer 67 do not each conduct one or more kinds of substances that contain oxygen.
    Type: Application
    Filed: June 4, 2015
    Publication date: September 24, 2015
    Inventors: Mika MURAKAMI, Sumiko HORISAKA, Hiroki FUJITA
  • Patent number: 9144073
    Abstract: Disclosed is a wireless base station (eNB1-1) that sets to each serving wireless terminal (UE2) different frequency bandwidths (SRS transmission frequency bandwidths) that are used when said serving wireless terminals (UE2) send SRS at a predetermined special sub-frame timing. In addition the wireless base station (eNB1-1) sends the set SRS transmission frequency bandwidth information to the serving wireless terminals (UE2).
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: September 22, 2015
    Assignee: KYOCERA Corporation
    Inventors: Masahiro Yagi, Masaaki Nakata, Nobuaki Takamatsu, Hiroki Fujita, Yoshizo Sato
  • Patent number: 9121819
    Abstract: A gas sensor including an internal space, a first electrode, a second electrode, a pumping cell, a third electrode, a fourth electrode, a measuring cell, and a porous diffusion layer. The first and third electrodes, and the second and fourth electrodes are formed inside and outside the internal space, respectively. The pumping cell includes the first and second electrodes, and the measuring cell includes the third and fourth electrodes. The pumping cell pumps oxygen from the internal space when a predetermined voltage is applied between the first and second electrodes. The third electrode reduces an oxide gas component in a predetermined gas component to which a predetermined diffusion resistance has been applied by the porous diffusion layer. The measuring cell measures current flow between the third and fourth electrodes when a voltage corresponding to the degree of reduction in the third electrode is applied between the third and fourth electrodes.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: September 1, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Hiroki Fujita, Sumiko Horisaka, Mika Murakami, Takashi Ito
  • Patent number: 9110012
    Abstract: A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: August 18, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Sumiko Horisaka, Hiroki Fujita, Mika Murakami, Takashi Ito
  • Patent number: 9091646
    Abstract: A NOx sensor 100 includes a sensor device 110 and a heater 70 capable of heating the sensor device 110. The sensor device 110 includes an inner pump electrode 22 and an outer pump electrode 23 disposed respectively on the inner side and the outer side of a solid electrolyte layer 6. The sensor device 110 detects the concentration of NOx by introducing a gas to be measured into a first inner vacancy 20, pumping out oxygen in the gas to be measured from the inner pump electrode 22 to the outer pump electrode 23, introducing the gas to be measured, from which the oxygen has been pumped out, into a second inner vacancy 40, reducing the NOx in the gas to be measured, to thereby generate oxygen, and detecting the generated oxygen. A characteristic stabilizing layer 24 covers the outer pump electrode 23 and is made of a porous body with a thickness of 10 to 200 ?m and a thickness variation of 20% or less.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: July 28, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Sumiko Horisaka, Hiroki Fujita, Mika Murakami, Takashi Ito
  • Patent number: 9025554
    Abstract: A transmission path state estimation unit estimates a state of a transmission path to a wireless terminal based on a DRS (Demodulation Reference Signal) included in uplink user data received from the wireless terminal when a re-sending request is received after transmission of an SRS is stopped. A transmission unit forms directivity of a plurality of antennas based on the estimated state of the transmission path and transmits downlink user data.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: May 5, 2015
    Assignee: KYOCERA Corporation
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita
  • Patent number: 8995408
    Abstract: A resource determination unit determines at least a part of an uplink part in a switch subframe as a second resource for a wireless terminal to transmit an SRS and determines at least a part within any uplink subframe as a third resource for the wireless terminal to transmit uplink user data including a DRS for a prescribed period. A transmission path state estimation unit estimates a state of a transmission path to the wireless terminal based on the DRS included in the uplink user data after the third resource is determined. A resource notification unit forms antenna directivity based on the estimated state of the transmission path and transmits a control message for notifying the wireless terminal of the determined second resource.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 31, 2015
    Assignee: KYOCERA Corporation
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita
  • Publication number: 20140356233
    Abstract: An automatic analyzer is capable of performing a preparation process on a reagent used to measure a highly urgent test item even during analysis operation, and is configured as follows. If there is no parameter for the analysis item regarding a new reagent, the parameters are downloaded. If the priority of reagent preparation is “high,” a sample pipetting scheduling process is temporarily stopped. If the priority of reagent preparation is not “high,” it is determined whether a waiting time limit has been exceeded, and if it has, the sample pipetting scheduling process is stopped temporarily, reagent preparation scheduling is performed, and the sample pipetting scheduling process is resumed. If it is determined that the waiting time limit has not been exceeded, if the priority of reagent preparation is “medium,” and if the reagent preparation mechanism is found available, then reagent preparation scheduling is performed.
    Type: Application
    Filed: December 26, 2012
    Publication date: December 4, 2014
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Takaaki Hagiwara, Kazunori Yamazawa, Hiroki Fujita
  • Publication number: 20140341142
    Abstract: Provided is, in wireless communication systems such as TD-LTE where there might be difference in frequency band allocated to a mobile station between uplink and downlink, a wireless communication system which is capable of ensuring desired antenna directivity by the mobile station controlling an adaptive array antenna, such a method for controlling a wireless communication system, such a base station, and such a mobile station. The mobile station transmits to the base station a message indicating that the self station includes an adaptive array antenna. Upon receiving the message, the base station assigns a downlink resource block and an uplink resource block following the downlink resource block allocated to the mobile station within the same frequency band. The mobile station 1 controls the adaptive array antenna based on a signal received using the allocated downlink resource block and transmits a signal using the allocated uplink resource block.
    Type: Application
    Filed: November 9, 2012
    Publication date: November 20, 2014
    Applicant: KYOCERA CORPORATION
    Inventor: Hiroki Fujita
  • Patent number: 8883366
    Abstract: A device includes a ceramic thin plate member including a fired ceramic sheet; and a metal thin plate member having an outer shape larger than that of the ceramic thin plate member. An outer circumferential portion of the ceramic thin plate member is joined to the metal thin plate member. The ceramic thin plate member has through holes and a plurality of crease portions. Each crease portion has a ridge portion whose crest continuously extends from a joint portion between the ceramic thin plate member and the metal thin plate member toward an outer circumferential portion of the metal thin plate member. Since thermal stress due to a difference in thermal expansion between the metal thin plate member and the ceramic thin plate member can be relaxed through expansion of the crease portions, the ceramic thin plate member does not deform.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: November 11, 2014
    Assignee: NGK Insulators, Ltd.
    Inventors: Makoto Ohmori, Natsumi Shimogawa, Tsutomu Nanataki, Hiroki Fujita
  • Publication number: 20140076725
    Abstract: A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.
    Type: Application
    Filed: November 19, 2013
    Publication date: March 20, 2014
    Applicant: NGK Insulators, Ltd.
    Inventors: Sumiko HORISAKA, Hiroki FUJITA, Mika MURAKAMI, Takashi ITO
  • Patent number: 8623187
    Abstract: A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: January 7, 2014
    Assignee: NGK Insulators, Ltd.
    Inventors: Sumiko Horisaka, Hiroki Fujita, Mika Murakami, Takashi Ito
  • Publication number: 20130308594
    Abstract: An eNB1-1 transmits an RRC Connection Reconfiguration message to UE2-1 to UE2-3, in which SRS parameters and an application timing parameter are set, the SRS parameters differ for each of the UE2-1 to the UE2-3 and the application timing parameter is common in the UE2-1 to the UE2-3. The UE2-1 to the UE2-3 receive the RRC Connection Reconfiguration message and recognize the SRS parameters and the application timing parameter set in the message. Furthermore, when an application timing of the SRS parameter arrives, the UE2-1 to the UE2-3 apply the SRS parameter to the SRS and transmit the SRS.
    Type: Application
    Filed: December 15, 2011
    Publication date: November 21, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Nobuaki Takamatsu, Masahiro Yagi, Yoshizo Sato, Masaaki Nakata, Hiroki Fujita
  • Publication number: 20130273973
    Abstract: If the frequency band of an SRS from a serving radio terminal (UE 2-1) is identical with the frequency band of an SRS from a serving radio terminal (UE 2-2), a radio base station (eNB 1-1) transmits, to one of the serving radio terminals (UE 2-1, UE 2-2), an RRC connection reconfiguration message in which transmission halt request information has been set.
    Type: Application
    Filed: August 26, 2011
    Publication date: October 17, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita
  • Publication number: 20130230018
    Abstract: Disclosed is a wireless base station (eNB1-1) that sets to each serving wireless terminal (UE2) different frequency bandwidths (SRS transmission frequency bandwidths) that are used when said serving wireless terminals (UE2) send SRS at a predetermined special sub-frame timing. In addition the wireless base station (eNB1-1) sends the set SRS transmission frequency bandwidth information to the serving wireless terminals (UE2).
    Type: Application
    Filed: July 15, 2011
    Publication date: September 5, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Masahiro Yagi, Masaaki Nakata, Nobuaki Takamatsu, Hiroki Fujita, Yoshizo Sato
  • Publication number: 20130225186
    Abstract: In a case where, although a radio base station (eNB 1-1) has established an SRS transmission frequency band, a serving radio terminal (UE 2-1) has transmitted, to the radio base station (eNB 1-1), an SRS by use of only a frequency band that is a part of the SRS transmission frequency band, the radio base station (eNB 1-1) allocates a downstream resource block the frequency band of which is included in the SRS transmission frequency band and further the frequency band of which is identical with the frequency band of the SRS received at the latest; then establishes, for the downstream resource block, a transmission weight based on the SRS received at the latest; and then uses the downstream resource block to transmit a radio signal.
    Type: Application
    Filed: August 26, 2011
    Publication date: August 29, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Yoshizo Sato, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita, Masaaki Nakata
  • Publication number: 20130215847
    Abstract: A transmission path state estimation unit estimates a state of a transmission path to a wireless terminal based on a DRS (Demodulation Reference Signal) included in uplink user data received from the wireless terminal when a re-sending request is received after transmission of an SRS is stopped. A transmission unit forms directivity of a plurality of antennas based on the estimated state of the transmission path and transmits downlink user data.
    Type: Application
    Filed: August 4, 2011
    Publication date: August 22, 2013
    Applicant: KYOCERA Corporation
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita
  • Publication number: 20130215851
    Abstract: A wireless base station (eNB1-1) uses in a differentiated manner, depending on the expected data amount of downlink transmission to the serving wireless terminal UE, the transmission of RRC Connection Reconfiguration messages in which SRS specific transmission request information is set, and the transmission of RRC Connection Reconfiguration messages in which SRS hopping transmission request information is set.
    Type: Application
    Filed: August 26, 2011
    Publication date: August 22, 2013
    Applicant: KYOCERA CORPORATION
    Inventors: Yoshizo Sato, Masaaki Nakata, Nobuaki Takamatsu, Masahiro Yagi, Hiroki Fujita