Patents by Inventor Akira Ito

Akira Ito 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: 20170005093
    Abstract: A field effect transistor (FET) configuration is provided having a gate region with a split work function for the source-side and drain-side of the gate region. The work function of a material is defined as the minimum energy required to extract an electron from the surface of the material to free space. Accordingly, the source-side portion of the gate region has a first work function that less than a second work function of the drain-side portion, the result of which is increased breakdown voltage at the drain-gate interface, without significantly increasing the threshold voltage of the FET. The split work function is achieved by layering n-type gate material over p-type gate material in the drain-side portion of the gate region, while only the n-type gate material us used in the source-side portion of the gate region.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 5, 2017
    Applicant: Broadcom Corporation
    Inventors: Qintao ZHANG, Mei XUE, Wenwei YANG, Akira ITO
  • Publication number: 20170005103
    Abstract: A one-time programmable memory (OTP) is provided that includes a combined word line programming line (WL-PL). The OTP includes a programmable transistor having a first threshold voltage and a first breakdown voltage, and a pass transistor having a second threshold voltage and a second breakdown voltage. The combined WL-PL is electrically connected to respective gate electrodes of both the programmable transistor and the pass transistor so that both receive the same control voltage. The second gate electrode has a work function that is greater than that of the first gate electrode, so that the second gate breakdown voltage is greater than the first gate breakdown voltage, which enables the use of the combined WL-PL.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 5, 2017
    Applicant: Broadcom Corporation
    Inventors: Qintao ZHANG, Mei XUE, Wenwei YANG, Akira ITO
  • Patent number: 9538400
    Abstract: A radio communication system includes a base station and a mobile station communicating with the base station. The base station includes a selection unit and a first transmitting unit. The selection unit selects an item of identification information for identifying a data series from a plurality of data series corresponding to resources used to transmit a signal that the mobile station uses to measure reception quality. The first transmitting unit transmits the item of identification information. The mobile station includes a receiving unit, a measurement unit, and a second transmitting unit. The receiving unit receives the item of identification information that the first transmitting unit has transmitted. The measurement unit measures the reception quality using a signal of the data series identified by the item of identification information. The second transmitting unit transmits information indicating the reception quality that the measurement unit has measured to the base station.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: January 3, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Akira Ito
  • Publication number: 20160379979
    Abstract: A device includes a substrate, a deep well, a first well, and a second well. The deep well is formed in the substrate. The first well includes a first portion formed on the deep well and a second portion formed in the substrate. The second well is formed partially on the deep well. A first separator structure is formed on the deep well to isolate the first portion of the first well from the second well, and a second separator structure is formed on the substrate to isolate the second well and a second portion of the first well.
    Type: Application
    Filed: August 4, 2015
    Publication date: December 29, 2016
    Inventor: Akira ITO
  • Patent number: 9520398
    Abstract: A device includes a substrate, a deep well, a first well, and a second well. The deep well is formed in the substrate. The first well includes a first portion formed on the deep well and a second portion formed in the substrate. The second well is formed partially on the deep well. A first separator structure is formed on the deep well to isolate the first portion of the first well from the second well, and a second separator structure is formed on the substrate to isolate the second well and a second portion of the first well.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: December 13, 2016
    Assignee: Broadcom Corporation
    Inventor: Akira Ito
  • Patent number: 9516506
    Abstract: According to an aspect of an embodiment, a method of controlling radio resources includes calculating multiple sets of scaled load estimates based on a single set of initial load estimates associated with estimated radio resource loads of multiple base stations. Each of the sets of scaled load estimates includes the single set of initial load estimates scaled by one of multiple scale factors. The method further includes determining multiple objective function results. Each objective function result is based at least in part on a result of an objective function for an individual set of scaled load estimates of the multiple sets of scaled load estimates. The method further includes determining an operating set of radio resources for multiple base stations based at least in part on the multiple objective function results.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: December 6, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Ahmed Ragab Elsherif, Wei-Peng Chen, Akira Ito
  • Patent number: 9507368
    Abstract: A power control apparatus includes: a power supply device including multiple power supply elements; a power consumption device; a battery independently arranged from the power supply device and the power consumption device; a supply and consumption balance adjustment device for controlling the power supply device and the battery to supply the electric power to the power consumption device; a prediction device for predicting electric power supply from at least a part of multiple power supply elements and electric power consumption of the power consumption device; a guard value setting device for setting a guard value of a charging and discharging operation of the battery according to a prediction result of the prediction device; and an output device for outputting the guard value to the supply and consumption balance adjustment device.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: November 29, 2016
    Assignees: DENSO CORPORATION, AVAL NAGASAKI CORPORATION
    Inventors: Akira Ito, Hiroshi Muneishi
  • Patent number: 9478542
    Abstract: A semiconductor device includes a substrate having a well region implanted with a first dopant by a first well implantation and a non-doped section blocked from the first well implantation. The semiconductor device includes a semiconductor fin formed on the substrate, in which the semiconductor fin has a channel stop region and a channel region above the channel stop region. The channel stop region has a portion of the non-doped section and a portion of the well region. The semiconductor fin has a planar channel formed at an interface between the non-doped section and the channel region for additional current flow between source and drain regions of the semiconductor fin. The semiconductor device includes an isolation layer disposed adjacent to and in contact with the well region and the channel stop region. The semiconductor device also includes a gate structure disposed on the isolation layer and around the channel region.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: October 25, 2016
    Assignee: Broadcom Corporation
    Inventor: Akira Ito
  • Patent number: 9472615
    Abstract: A fin-shaped field-effect transistor (finFET) device is provided. The finFET device includes a substrate material with a top surface and a bottom surface. The finFET device also includes a well region formed in the substrate material. The well region may include a first type of dopant. The finFET device also includes a fin structure disposed on the top surface of the substrate material. A portion of the fin structure may include the first type of dopant. The finFET device also includes an oxide material disposed on the top surface of the substrate material and adjacent to the portion of the fin structure. The finFET device also includes a first epitaxial material disposed over a portion of the fin structure. The first epitaxial material may include a second type of dopant.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: October 18, 2016
    Assignee: Broadcom Corporation
    Inventors: Qintao Zhang, Akira Ito
  • Publication number: 20160276355
    Abstract: A programmable cell includes a split gate structure. The split gate structure includes a thin gate dielectric region and a thick gate dielectric region disposed below a gate conductor. A thickness of the thick oxide region is more than a thickness of the thin oxide region. The programmable cell can be fabricated using angle doping to dope an area associated with the thin dielectric region.
    Type: Application
    Filed: April 21, 2015
    Publication date: September 22, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Qintao Zhang, Akira Ito
  • Patent number: 9450536
    Abstract: An inspection apparatus includes an irradiation part that emits plural pieces of pulse light having different wavelengths to irradiate a multi-junction type solar cell; a wavelength setting part that sets the wavelengths of the plural pieces of pulse light with which the multi-junction type solar cell is irradiated by the irradiation part; and a detection part that detects an electric field intensity of an electromagnetic wave emitted from the multi-junction type solar cell in response to the plural pieces of pulse light with which the multi-junction type solar cell is irradiated by the irradiation part. The irradiation part includes a delay element that delays a time the multi-junction type solar cell is irradiated with the pulse light by a time ?t11 relative to the pulse light.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: September 20, 2016
    Assignees: SCREEN HOLDINGS CO., LTD., OSAKA UNIVERSITY
    Inventors: Hidetoshi Nakanishi, Akira Ito, Iwao Kawayama, Masayoshi Tonouchi
  • Patent number: 9451544
    Abstract: When completing radio communication with a radio terminal, a transmitting unit of a base station transmits to the radio terminal a validity period of control information on radio communication which has been used to communicate with the radio terminal. When starting radio communication with the radio terminal within the validity period, a communication unit of the base station performs radio communication with the radio terminal without performing a process of exchanging control information. When completing radio communication with the base station, a receiving unit of the radio terminal receives a validity period from the base station. When starting radio communication with the base station within the validity period, a communication unit of the radio terminal performs radio communication with the radio terminal without performing a process of exchanging control information.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 20, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiharu Tajima, Yoshiaki Ohta, Akira Ito, Katsumasa Sugiyama
  • Publication number: 20160255647
    Abstract: A method of communicating wireless communication resource scheduling may include determining a scheduling of a wireless communication resource associated with a device-to-device (D2D) data channel transmission over a D2D data channel. The method may also include transmitting the scheduled wireless communication resource associated with the D2D data channel transmission over a D2D control channel in a D2D control channel transmission. The D2D control channel transmission may be transmitted before transmitting the D2D data channel transmission. The D2D control channel may be separate from the D2D data channel.
    Type: Application
    Filed: May 12, 2014
    Publication date: September 1, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Chenxi ZHU, Akira ITO
  • Publication number: 20160233212
    Abstract: A capacitor structure in a semiconductor device includes a semiconductor substrate having a top surface and a bottom surface opposite the top surface, an isolation region having a top surface and a bottom surface, opposite the top surface, the bottom surface of the isolation region being disposed on the top surface of the semiconductor substrate. The capacitor structure also includes a gate terminal structure disposed on the top surface of the isolation region and a diffusion contact structure disposed on the top surface of the isolation region and arranged parallel to the gate terminal structure. In some aspects, the gate terminal structure is connected to a first contact node and the diffusion contact structure is connected to a second contact node, in which the first and second contact nodes form opposing nodes of the capacitor structure.
    Type: Application
    Filed: April 13, 2016
    Publication date: August 11, 2016
    Inventors: Shom Surendran PONOTH, Changyok PARK, Guang-Jye SHIAU, Akira ITO
  • Patent number: 9414379
    Abstract: According to an aspect of an embodiment, a method of determining a precoder for wireless communications may include acquiring first channel information associated with a first channel between a first node of a wireless communication network and a second node of the wireless communication network. The first node may be configured to transmit a first wireless signal in a wireless communication resource to the second node via the first channel. The method may further include acquiring second channel information associated with a second channel between the first node and a third node of the wireless communication network. The third node being may be configured to receive a second wireless signal transmitted in the wireless communication resource. Additionally, the method may include determining a precoder for transmission of the first wireless signal based on the first channel information and the second channel information.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: August 9, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Chenxi Zhu, Dorin Viorel, Huy Dung Han, Akira Ito
  • Patent number: 9404874
    Abstract: An inspection apparatus according to an aspect of the present invention inspects a solar cell that is of a photo device. The inspection apparatus includes: an irradiation part that irradiates the solar cell with pulse light emitted from a femtosecond laser that is of a light source; an electromagnetic wave detection part that detects an electromagnetic wave pulse emitted from the solar cell in response to the irradiation of the solar cell with the pulse light; and a PL light detection part that detects photoluminescence light generated in the solar cell in response to the irradiation of the solar cell with the pulse light.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 2, 2016
    Assignee: SCREEN HOLDINGS, CO., LTD.
    Inventors: Hidetoshi Nakanishi, Akira Ito, Iwao Kawayama, Masayoshi Tonouchi
  • Patent number: 9402262
    Abstract: A method of allocating a wireless communication resource to a device-to-device (D2D) pair of wireless devices may include determining an access-point interference threshold of an access point of a wireless communication network. The method may further include determining a device-to-device (D2D) signal power of a D2D signal at the access point. The D2D signal may be associated with D2D communications between a D2D pair of wireless devices. The method may also include assigning a wireless communication resource to the D2D pair based on a comparison of the access-point interference threshold with an access-point interference value where the access-point interference value is based on the determined D2D signal power at the access point.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: July 26, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Chenxi Zhu, Akira Ito, Huy-Dung Han
  • Publication number: 20160211367
    Abstract: A semiconductor device includes a first well that is disposed in a semiconductor substrate. The semiconductor device further includes a second well that is disposed in the semiconductor substrate. The semiconductor device further includes a source region, a drain region, and a gate structure between the source region and the drain region. The gate structure is disposed above the first well. The source region includes a first conducting contact above the first well and. The drain region includes a second conducting contact above the second well, the drain region being connected with the second well at least partially through a first epi region. The first epi region and the second well are configured to lower a first driving voltage applied on the source region and the drain region to a second voltage applied on the gate structure.
    Type: Application
    Filed: February 18, 2015
    Publication date: July 21, 2016
    Inventors: Akira Ito, Shom Ponoth
  • Publication number: 20160212686
    Abstract: A method may include detecting multiple system-information block (SIB) blocks and associated content. The associated content may be stored. The method may further include detecting multiple change flags associated with the multiple SIB blocks, each of the multiple change flags associated with one of the multiple SIB blocks. In response to detecting a change flag having a first change flag value, content of the SIB block associated with the first change flag may be reused. The first change flag value may represent an absence of a change to the content of the SIB block associated with the first change flag. In response to detecting the change flag having a second change flag value, the SIB block associated with the second change flag may be detected and the associated content stored. The second change flag value may represent a change to the content of the associated SIB blocks.
    Type: Application
    Filed: February 10, 2014
    Publication date: July 21, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Dorin G. VIOREL, Paul BUCKNELL, Akira ITO
  • Publication number: 20160198505
    Abstract: A method of performing a terminal-to-terminal communication includes performing a terminal-to-terminal transmission via a portion of a radio spectrum licensed for transmission of wireless data. The terminal-to-terminal transmission is transmitted without performing terminal-to-terminal discovery associated with the terminal-to-terminal transmission. The terminal-to-terminal transmission is configured to be received by a terminal without being routed through a base station. The method further includes checking for an acknowledgement sequence and checking for a negative acknowledgement sequence.
    Type: Application
    Filed: January 7, 2014
    Publication date: July 7, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Chenxi ZHU, Akira ITO