Patents by Inventor Daisuke Iwai

Daisuke Iwai 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: 20240274367
    Abstract: A ceramic electronic component includes: a ceramic body including main surfaces perpendicular to a first axis and end surfaces perpendicular to a second axis; and external electrodes covering the end surfaces and extending from the end surfaces to the main surfaces. The external electrode includes a surface layer portion including a Sn plating layer, and an inner layer portion including a Ni plating layer adjacent to the Sn plating layer and including rounded inner end portions on the main surfaces. In a cross-section perpendicular to a third axis, a ratio t2/t1 is 0.4 or more, where t2 is a thickness in the first axis direction of a portion where an inclination of a tangent line of an outer surface of the inner end portion to each main surface is 45°, and t1 is a maximum thickness in the first axis direction of the inner layer portion on each main surface.
    Type: Application
    Filed: April 22, 2024
    Publication date: August 15, 2024
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Eriko NUMATA, Daisuke IWAI, Shinichi SASAKI, Fumi MORI
  • Patent number: 11996245
    Abstract: A ceramic electronic component includes: a ceramic body including main surfaces perpendicular to a first axis and end surfaces perpendicular to a second axis; and external electrodes covering the end surfaces and extending from the end surfaces to the main surfaces. The external electrode includes a surface layer portion including a Sn plating layer, and an inner layer portion including a Ni plating layer adjacent to the Sn plating layer and including rounded inner end portions on the main surfaces. In a cross-section perpendicular to a third axis, a ratio t2/t1 is 0.4 or more, where t2 is a thickness in the first axis direction of a portion where an inclination of a tangent line of an outer surface of the inner end portion to each main surface is 45°, and t1 is a maximum thickness in the first axis direction of the inner layer portion on each main surface.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: May 28, 2024
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Eriko Numata, Daisuke Iwai, Shinichi Sasaki, Fumi Mori
  • Patent number: 11967467
    Abstract: A multi-layer ceramic electronic component includes a ceramic body and an external electrode. The ceramic body includes a plurality of internal electrodes laminated in one axial direction, and an end surface extending along a plane parallel to the axial direction, at least part of the plurality of internal electrode being drawn from the end surface. The external electrode covers the end surface of the ceramic body. In a thermal desorption spectrum of water of the multi-layer ceramic electronic component by thermal desorption spectroscopy, a ratio P1/P2 of a detection intensity P1 of a first peak in a range of 200° C. to 300° C. to a detection intensity P2 of a second peak in a range of 550° C. to 800° C. is equal to or lower than 11.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: April 23, 2024
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fumi Mori, Daisuke Iwai, Shinichi Sasaki
  • Publication number: 20240070062
    Abstract: According to one embodiment, a nonvolatile memory includes a memory chip and a command processing unit. The command processing unit stores data read from a first position of the memory chip in a memory when a first command for compaction is received from a controller, transmits validity determination information used for determining whether or not the data read from the first position is valid to the controller, and writes valid data of the data stored in the memory to a second position of the memory chip when a second command for the compaction and validity identification information that identifies the valid data are received from the controller.
    Type: Application
    Filed: November 6, 2023
    Publication date: February 29, 2024
    Inventors: Daisuke IWAI, Toshio FUJISAWA, Keigo HARA
  • Patent number: 11847050
    Abstract: According to one embodiment, a nonvolatile memory includes a memory chip and a command processing unit. The command processing unit stores data read from a first position of the memory chip in a memory when a first command for compaction is received from a controller, transmits validity determination information used for determining whether or not the data read from the first position is valid to the controller, and writes valid data of the data stored in the memory to a second position of the memory chip when a second command for the compaction and validity identification information that identifies the valid data are received from the controller.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: December 19, 2023
    Assignee: Kioxia Corporation
    Inventors: Daisuke Iwai, Toshio Fujisawa, Keigo Hara
  • Patent number: 11747979
    Abstract: According to one embodiment, an electronic device includes a nonvolatile memory that includes blocks and a controller. The controller transmits information to the host. The information indicates a first logical address range corresponding to cold data stored in the nonvolatile memory, and a processing amount for turning a cold block that comprises the cold data into a block to which data is writable. The controller reads the cold data from the nonvolatile memory in accordance with a read command that is received from the host and designates the first logical address range, and transmits the read cold data to the host. The controller writes, to the nonvolatile memory, the cold data that is received with a write command designating the first logical address range from the host.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 5, 2023
    Assignee: Kioxia Corporation
    Inventors: Tetsuya Sunata, Daisuke Iwai, Kenichiro Yoshii
  • Publication number: 20230104406
    Abstract: A ceramic electronic component includes: a ceramic body including main surfaces perpendicular to a first axis and end surfaces perpendicular to a second axis; and external electrodes covering the end surfaces and extending from the end surfaces to the main surfaces. The external electrode includes a surface layer portion including a Sn plating layer, and an inner layer portion including a Ni plating layer adjacent to the Sn plating layer and including rounded inner end portions on the main surfaces. In a cross-section perpendicular to a third axis, a ratio t2/t1 is 0.4 or more, where t2 is a thickness in the first axis direction of a portion where an inclination of a tangent line of an outer surface of the inner end portion to each main surface is 45°, and t1 is a maximum thickness in the first axis direction of the inner layer portion on each main surface.
    Type: Application
    Filed: August 12, 2022
    Publication date: April 6, 2023
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Eriko NUMATA, Daisuke IWAI, Shinichi SASAKI, Fumi MORI
  • Publication number: 20230086815
    Abstract: A multi-layer ceramic electronic component includes a ceramic body and an external electrode. The ceramic body includes a plurality of internal electrodes laminated in one axial direction, and an end surface extending along a plane parallel to the axial direction, at least part of the plurality of internal electrode being drawn from the end surface. The external electrode covers the end surface of the ceramic body. In a thermal desorption spectrum of water of the multi-layer ceramic electronic component by thermal desorption spectroscopy, a ratio P1/P2 of a detection intensity P1 of a first peak in a range of 200° C. to 300° C. to a detection intensity P2 of a second peak in a range of 550° C. to 800° C. is equal to or lower than 11.
    Type: Application
    Filed: August 24, 2022
    Publication date: March 23, 2023
    Inventors: Fumi MORI, Daisuke IWAI, Shinichi SASAKI
  • Patent number: 11609844
    Abstract: A memory system includes a first memory that is nonvolatile, a second memory that is volatile, and a memory controller. The memory controller is configured to store first information in the second memory. The first information includes management information. The memory controller is further configured to compress the first information. The compressed first information is second information. The memory controller is configured to store the second information in the first memory.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 21, 2023
    Assignee: KIOXIA CORPORATION
    Inventors: Keiri Nakanishi, Konosuke Watanabe, Kohei Oikawa, Daisuke Iwai
  • Patent number: 11520496
    Abstract: According to one embodiment, an electronic device connectable to a host via an interface includes a nonvolatile memory and a controller electrically connected to the nonvolatile memory and capable of processing commands issued by the host in parallel. When the electronic device is connected to the host, the controller determines, when one or more commands to be processed by one or more deadline times, respectively, are issued by the host, scheduling indicative of timings at which the one or more commands are processed, respectively, based on the one or more deadline times. The controller performs processing corresponding to the one or more commands in accordance with the scheduling.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: December 6, 2022
    Assignee: Kioxia Corporation
    Inventors: Daisuke Iwai, Kenichiro Yoshii, Tetsuya Sunata
  • Patent number: 11397675
    Abstract: According to one embodiment, a storage device includes a nonvolatile memory and a controller. The nonvolatile memory cannot overwrite data written in a memory area. The controller controls writing/reading of data to/from the nonvolatile memory in response to a request from a host device. The controller includes a garbage collection processor and a garbage collection controller. The garbage collection processor executes garbage collection to reuse a memory area on the nonvolatile memory in which unnecessary data remain. The garbage collection controller stops the garbage collection executed by the garbage collection processor when the storage device is in a loaded state equal to or less than a threshold value.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: July 26, 2022
    Assignee: Kioxia Corporation
    Inventors: Kenichiro Yoshii, Tetsuya Sunata, Daisuke Iwai
  • Patent number: 11368657
    Abstract: The present disclosure relates to a method for calibrating a projector. In one example, the method includes receiving by a processing element light field data corresponding to a calibration image projected by a projector and captured by a light field capturing device, and modeling by a processing element one or more intrinsic properties of the projector using the light field data and the calibration image. The calibration image may be projected by the projector directly into the light field capturing device.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 21, 2022
    Assignee: DISNEY ENTERPRISES, INC.
    Inventors: Anselm Grundhöfer, Daisuke Iwai
  • Patent number: 11307797
    Abstract: According to one embodiment, a storage device is accessible by an external device via an interface and includes a nonvolatile memory including one or more blocks, and a controller electrically connected to the nonvolatile memory. The controller receives from the external device a request and a notification indicating that a response performance of the request is to be lowered. In response to receiving the request and notification, the controller determines a response time longer than a processing time of the request, and executes a first performance lowering process that executes a block managing process of the nonvolatile memory by using an idle time which is a difference between the response time and the processing time of the request or executes a second performance lowering process that lowers the response performance so as to process the request by spending the response time.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 19, 2022
    Assignee: KIOXIA CORPORATION
    Inventors: Tetsuya Sunata, Daisuke Iwai, Kenichiro Yoshii
  • Publication number: 20220066921
    Abstract: According to one embodiment, a nonvolatile memory includes a memory chip and a command processing unit. The command processing unit stores data read from a first position of the memory chip in a memory when a first command for compaction is received from a controller, transmits validity determination information used for determining whether or not the data read from the first position is valid to the controller, and writes valid data of the data stored in the memory to a second position of the memory chip when a second command for the compaction and validity identification information that identifies the valid data are received from the controller.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 3, 2022
    Inventors: Daisuke IWAI, Toshio FUJISAWA, Keigo HARA
  • Publication number: 20220020534
    Abstract: A ceramic electronic component includes a multilayer chip including a multilayer structure having ceramic dielectric layers and internal electrode layers alternately stacked, and cover layers respectively disposed on top and bottom faces of the multilayer structure in a first direction in which the dielectric layers and the internal electrode layers are stacked, and a pair of external electrodes formed from respective edge faces to at least one side face of the multilayer chip, wherein a ratio of a thickness of the multilayer chip in the first direction to a width of the multilayer chip in a shorter side direction is 0.7 or less, wherein a thickness of a capacitance section where adjacent internal electrode layers connected to different external electrodes are opposite to each other in the first direction is equal to or greater than 2.2 times at least one of thicknesses of the cover layers in the first direction.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 20, 2022
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shunya FUKUDA, Fukio KINOSHITA, Daisuke IWAI
  • Publication number: 20210240352
    Abstract: According to one embodiment, an electronic device includes a nonvolatile memory that includes blocks and a controller. The controller transmits information to the host. The information indicates a first logical address range corresponding to cold data stored in the nonvolatile memory, and a processing amount for turning a cold block that comprises the cold data into a block to which data is writable. The controller reads the cold data from the nonvolatile memory in accordance with a read command that is received from the host and designates the first logical address range, and transmits the read cold data to the host. The controller writes, to the nonvolatile memory, the cold data that is received with a write command designating the first logical address range from the host.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: Toshiba Memory Corporation
    Inventors: Tetsuya SUNATA, Daisuke Iwai, Kenichiro Yoshii
  • Patent number: 11023132
    Abstract: According to one embodiment, an electronic device includes a nonvolatile memory that includes blocks and a controller. The controller transmits information to the host. The information indicates a first logical address range corresponding to cold data stored in the nonvolatile memory, and a processing amount for turning a cold block that comprises the cold data into a block to which data is writable. The controller reads the cold data from the nonvolatile memory in accordance with a read command that is received from the host and designates the first logical address range, and transmits the read cold data to the host. The controller writes, to the nonvolatile memory, the cold data that is received with a write command designating the first logical address range from the host.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: June 1, 2021
    Assignee: Toshiba Memory Corporation
    Inventors: Tetsuya Sunata, Daisuke Iwai, Kenichiro Yoshii
  • Patent number: 11011312
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip in which each of dielectric layers and each of internal electrode layers are alternately stacked and the internal electrode layers are alternately exposed to two end faces; and external electrodes formed on the two end faces; wherein: the external electrodes have a structure in which a plated layer is formed on a ground layer including Mo; and “M?0.003185×(Ew×Et)?0.5921 is satisfied when “Et” is a height from a bottom one of the internal electrode layers to a top one of the internal electrode layers, “Ew” is a width of the internal electrode layers in a direction in which side faces of the multilayer chip face with each other, and “M” is a Mo concentration (atm %) with respect to a main component ceramic of a total of the multilayer chip and the pair of external electrodes.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: May 18, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Daisuke Iwai, Atsuhiro Yanagisawa, Yoshinori Shibata, Masumi Ishii, Takeshi Nosaki, Hiroyuki Moteki
  • Patent number: 11004605
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having a structure in which each of ceramic dielectric layers and each of internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the ceramic multilayer structure, a main phase of the plurality of ceramic dielectric layers having a perovskite structure that includes Ca and Zr and is expressed by a general formula ABO3; and a pair of external electrodes that are formed on the two edge faces, wherein 300×TE/TA?12?30 is satisfied when a volume TA is a length CL×a width CW×a thickness CT of the ceramic multilayer structure and a volume TE is a length EL×a width EW×a thickness ET×a stacked number of the plurality of internal electrode layers in a capacity region.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: May 11, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Michio Oshima, Atsuhiro Yanagisawa, Yoshinori Shibata, Daisuke Iwai, Hiroyuki Moteki
  • Patent number: D952692
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 24, 2022
    Assignee: YAMADA CORPORATION
    Inventors: Daisuke Iwai, Kotaro Yamada