Patents by Inventor Kosuke Tatsumura

Kosuke Tatsumura 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: 9425801
    Abstract: A programmable logic circuit according to an embodiment includes: a first programmable device with a first and second terminals, a resistance of the first programmable device being changeable from a high resistance to a low resistance; a second programmable device with a third and fourth terminals, a resistance of the second programmable device being changeable from a high resistance to a low resistance; a first wiring line to which the first terminal is connected; a second wiring line to which the third terminal is connected; a third wiring line to which the second terminal and the fourth terminal are connected; and a fuse element of which one terminal is connected to the third wiring line.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: August 23, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinichi Yasuda, Kosuke Tatsumura, Mari Matsumoto, Masato Oda
  • Publication number: 20160203859
    Abstract: A semiconductor integrated circuit according to an embodiment includes: N (?1) input wiring lines; M (?1) output wiring lines; N first wiring lines corresponding to the N input wiring lines; K (>M) second wiring lines crossing the N first wiring lines; a plurality of first resistive change elements disposed at intersections of the first wiring lines and the second wiring lines, each of the first resistive change elements including a first electrode connecting to a corresponding one of the first wiring lines, a second electrode connecting to a corresponding one of the second wiring lines, and a first resistive change layer disposed between the first electrode and the second electrode; a first controller controlling a voltage applied to the first wiring lines; a second controller controlling a voltage applied to the second wiring lines; and a selection circuit selecting M second wiring lines from the K second wiring lines.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 14, 2016
    Inventors: Koichiro ZAITSU, Kosuke TATSUMURA, Masato ODA
  • Publication number: 20160203860
    Abstract: A look-up table circuit of an embodiment includes: first wiring lines; second wiring lines; resistive change elements disposed to intersection regions of the first and second wiring lines, each resistive change element including a first electrode connected to a corresponding one of the first wiring lines, a second electrode connected to a corresponding one of the second wiring lines; and a resistive change layer disposed between the first electrode and the second electrode; a first controller controlling voltages applied to the first wiring lines; a second controller controlling voltages applied to the second wiring lines; and a multiplexer including input terminals connected to the first wiring lines and an output terminal.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 14, 2016
    Inventors: Yinghao HO, Koichiro ZAITSU, Shinichi YASUDA, Kosuke TATSUMURA
  • Publication number: 20160203866
    Abstract: A semiconductor integrated circuit according to an embodiment includes: N (?1) input wiring lines; M (?1) output wiring lines; N first wiring lines corresponding to the N input wiring lines; K (>M) second wiring lines crossing the N first wiring lines; a plurality of first resistive change elements disposed at intersections of the first wiring lines and the second wiring lines, each of the first resistive change elements including a first electrode connecting to a corresponding one of the first wiring lines, a second electrode connecting to a corresponding one of the second wiring lines, and a first resistive change layer disposed between the first electrode and the second electrode; a first controller controlling a voltage applied to the first wiring lines; a second controller controlling a voltage applied to the second wiring lines; and a selection circuit selecting M second wiring lines from the K second wiring lines.
    Type: Application
    Filed: January 5, 2016
    Publication date: July 14, 2016
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura, Masato Oda
  • Patent number: 9361408
    Abstract: According to one embodiment, a memory system including a key-value store containing key-value data as a pair of a key and a value corresponding to the key, includes an interface, a memory block, an address acquisition circuit and a controller. The interface receives a data write/read request or a request based on the key-value store. The memory block has a data area for storing data and a metadata table containing the key-value data. The address acquisition circuit acquires an address in response to input of the key. The controller executes the data write/read request for the memory block, and outputs the address acquired to the memory block and executes the request based on the key-value store. The controller outputs the value corresponding to the key via the interface.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: June 7, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takao Marukame, Atsuhiro Kinoshita, Kosuke Tatsumura
  • Patent number: 9355740
    Abstract: A semiconductor nonvolatile memory device of an embodiment includes: a plurality of transistors arranged in a matrix, the transistors in the same row being connected in series to form a transistor string having a first terminal and a second terminal; a plurality of first wiring lines each corresponding to one of the columns, and being connected to the gates of the transistors of the corresponding column; a common first electrode connected to each semiconductor region in which each transistor is disposed; and a write unit that selects one of the first wiring lines and one of the transistor strings, and applies a first voltage to the first electrode, a first write voltage to the selected first wiring line, a second voltage to the other first wiring lines, and a second write voltage to the first terminal and the second terminal of the selected transistor string in a write operation.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: May 31, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura
  • Publication number: 20160149834
    Abstract: According to one embodiment, a storage device includes a plurality of memory nodes. Each of memory nodes includes a plurality of input ports, a plurality of output ports, a selector, a packet controller and a memory. The selector outputs a packet input to the input port to one of the output ports. The packet controller controls the selector. The memory stores data. The memory nodes are mutually connected at the input ports and the output ports. The memory node has an address that is determined by its physical position. The packet controller switches the output port that outputs the packet based on information including at least a destination address of the packet and an address of the memory node having the packet controller when receiving a packet that is not addressed to the memory node having the packet controller.
    Type: Application
    Filed: December 18, 2015
    Publication date: May 26, 2016
    Inventors: Kosuke TATSUMURA, Atsuhiro KINOSHITA, Hirotaka NISHINO, Masamichi SUZUKI, Yoshifumi NISHI, Takao MARUKAME, Takahiro KURITA
  • Patent number: 9350356
    Abstract: According to one embodiment, a reconfigurable circuit includes first, second, third and fourth circuit blocks arranged with a matrix, a first conductive line shared by the first and second circuit blocks, a second conductive line shared by the third and fourth circuit blocks, a third conductive line shared by the first and third circuit blocks, the third conductive line crossing the first and second conductive lines, a fourth conductive line shared by the second and fourth circuit blocks, the fourth conductive line crossing the first and second conductive lines, a first controller controlling voltages to be applied to the first and second conductive lines, and a second controller controlling voltages to be applied to the third and fourth conductive lines.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: May 24, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kosuke Tatsumura, Masato Oda, Koichiro Zaitsu, Shinichi Yasuda
  • Publication number: 20160112049
    Abstract: A programmable logic circuit includes: first to third wiring lines, the second wiring lines intersecting with the first wiring lines; and cells provided in intersecting areas, at least one of cells including a first transistor and a programmable device with a first and second terminals, the first terminal connecting to one of a source and a drain of the first transistor, the second terminal being connected to one of the second wiring lines, the other of the source and the drain being connected to one of the first wiring lines, and a gate of the first transistor being connected to one of the third wiring lines. One of source and drain of each of the first cut-off transistors is connected to the one of the second wiring lines, and an input terminal of each of first CMOS inverters is connected to the other of the source and the drain.
    Type: Application
    Filed: December 30, 2015
    Publication date: April 21, 2016
    Inventors: Shinichi Yasuda, Kosuke Tatsumura, Mari Matsumoto, Koichiro Zaitsu, Masato Oda
  • Publication number: 20160079983
    Abstract: According to one embodiment, a reconfigurable circuit includes first, second, third and fourth circuit blocks arranged with a matrix, a first conductive line shared by the first and second circuit blocks, a second conductive line shared by the third and fourth circuit blocks, a third conductive line shared by the first and third circuit blocks, the third conductive line crossing the first and second conductive lines, a fourth conductive line shared by the second and fourth circuit blocks, the fourth conductive line crossing the first and second conductive lines, a first controller controlling voltages to be applied to the first and second conductive lines, and a second controller controlling voltages to be applied to the third and fourth conductive lines.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 17, 2016
    Inventors: Kosuke TATSUMURA, Masato ODA, Koichiro ZAITSU, Shinichi YASUDA
  • Patent number: 9276581
    Abstract: A nonvolatile programmable logic switch of an embodiment includes: a cell including: a first memory including a first terminal connected to a first wiring line, and a second terminal; a second memory including a third terminal connected to a second wiring line, and a fourth terminal connected to the second terminal of the first memory; a first transistor, of which one of a source and a drain is connected to the second and fourth terminals, the other of the source and the drain is connected to a third wiring line, and a gate is connected to a fourth wiring line; and a second transistor, of which one of a source and a drain is connected to the second and fourth terminals, the other of the source and the drain is connected to a gate of a pass transistor, and a gate is connected to a fifth wiring line.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: March 1, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mari Matsumoto, Kosuke Tatsumura, Shinichi Yasuda, Koichiro Zaitsu
  • Patent number: 9262500
    Abstract: According to one embodiment, a memory system including a key-value store containing key-value data as a pair of a key and a value corresponding to the key, includes a first memory, a control circuit and a second memory. The first memory is configured to contain a data area for storing data, and a table area containing the key-value data. The control circuit is configured to perform write and read to the first memory by addressing, and execute a request based on the key-value store. The second memory is configured to store the key-value data in accordance with an instruction from the control circuit. The control circuit performs a set operation by using the key-value data stored in the first memory, and the key-value data stored in the second memory.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: February 16, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Atsuhiro Kinoshita, Takao Marukame, Kosuke Tatsumura
  • Patent number: 9263463
    Abstract: According to one embodiment, a semiconductor integrated circuit includes nonvolatile memory areas, each includes a first nonvolatile memory transistor, a second nonvolatile memory transistor and an output line, the first nonvolatile memory transistor includes a first source diffusion region, a first drain diffusion region and a first control gate electrode, the second nonvolatile memory transistor includes a second source diffusion region, a second drain diffusion region and a second control gate electrode, the output line connected the first drain diffusion region and the second drain diffusion region, and logic transistor areas, each includes a logic transistor, the logic transistor includes a third source diffusion region, a third drain diffusion region and a first gate electrode.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: February 16, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura, Mari Matsumoto
  • Patent number: 9264044
    Abstract: A programmable logic circuit includes: first to third wiring lines, the second wiring lines intersecting with the first wiring lines; and cells provided in intersecting areas, at least one of cells including a first transistor and a programmable device with a first and second terminals, the first terminal connecting to one of a source and a drain of the first transistor, the second terminal being connected to one of the second wiring lines, the other of the source and the drain being connected to one of the first wiring lines, and a gate of the first transistor being connected to one of the third wiring lines. One of source and drain of each of the first cut-off transistors is connected to the one of the second wiring lines, and an input terminal of each of first CMOS inverters is connected to the other of the source and the drain.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: February 16, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichi Yasuda, Kosuke Tatsumura, Mari Matsumoto, Koichiro Zaitsu, Masato Oda
  • Publication number: 20160035419
    Abstract: A reconfigurable circuit according to an embodiment includes: first wiring lines; second wiring lines crossing the first wiring lines; resistive change elements disposed in intersection regions of the first and second wiring lines, each of the resistive change elements including a first terminal connected to the one of the first wiring lines and a second terminal connected to the one of the second wiring lines, and being switchable between a low-resistance state and a high-resistance state; a first control circuit controlling a voltage to be applied to the first wiring lines; a second control circuit controlling a voltage to be applied to the second wiring lines; and current limiting elements corresponding to the second wiring lines, and controlling current flowing through the resistive change elements connected to the corresponding second wiring line.
    Type: Application
    Filed: October 15, 2015
    Publication date: February 4, 2016
    Inventors: Koichiro ZAITSU, Shinichi Yasuda, Kosuke Tatsumura, Mari Matsumoto, Masato Oda, Reika Ichihara
  • Patent number: 9246709
    Abstract: According to one embodiment, a storage device includes a plurality of memory nodes. Each of memory nodes includes a plurality of input ports, a plurality of output ports, a selector, a packet controller and a memory. The selector outputs a packet input to the input port to one of the output ports. The packet controller controls the selector. The memory stores data. The memory nodes are mutually connected at the input ports and the output ports. The memory node has an address that is determined by its physical position. The packet controller switches the output port that outputs the packet based on information including at least a destination address of the packet and an address of the memory node having the packet controller when receiving a packet that is not addressed to the memory node having the packet controller.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: January 26, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kosuke Tatsumura, Atsuhiro Kinoshita, Hirotaka Nishino, Masamichi Suzuki, Yoshifumi Nishi, Takao Marukame, Takahiro Kurita
  • Publication number: 20150357032
    Abstract: According to one embodiment, an integrated circuit includes first and second data lines, a first memory cell includes first and second resistance changing elements connected in series between the first and second data lines and a first selection transistor including a drain connected to a connection node of the first and second resistance changing elements, and a second memory cell includes third and fourth resistance changing elements connected in series between the first and second data lines and a second selection transistor including a drain connected to a connection node of the third and fourth resistance changing elements.
    Type: Application
    Filed: August 20, 2015
    Publication date: December 10, 2015
    Inventors: Kosuke TATSUMURA, MARI MATSUMOTO, MASATO ODA, KOICHIRO ZAITSU, SHINICHI YASUDA
  • Publication number: 20150348631
    Abstract: A nonvolatile memory according to an embodiment includes a memory cell, the memory cell including: a memory transistor including a source, a drain, a gate electrode disposed above a channel between the source and the drain, and a gate insulating film disposed between the channel and the gate electrode; and a fuse element disposed between the gate electrode and a wiring line to which the gate electrode of the memory transistor is connected.
    Type: Application
    Filed: June 1, 2015
    Publication date: December 3, 2015
    Inventors: Mari MATSUMOTO, Kosuke TATSUMURA, Koichiro ZAITSU, Shinichi YASUDA
  • Publication number: 20150311900
    Abstract: A programmable logic circuit according to an embodiment includes: a first programmable device with a first and second terminals, a resistance of the first programmable device being changeable from a high resistance to a low resistance; a second programmable device with a third and fourth terminals, a resistance of the second programmable device being changeable from a high resistance to a low resistance; a first wiring line to which the first terminal is connected; a second wiring line to which the third terminal is connected; a third wiring line to which the second terminal and the fourth terminal are connected; and a fuse element of which one terminal is connected to the third wiring line.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 29, 2015
    Inventors: Shinichi YASUDA, Kosuke TATSUMURA, Mari MATSUMOTO, Masato ODA
  • Publication number: 20150269972
    Abstract: According to one embodiment, a configuration memory includes memory cell including first and second MISFETs, each of the first and second MISFETs having a gate insulating layer, a source, a drain, and a gate, one of the source and the drain of the first MISFET being connected to a first bit line, the gate of the first MISFET being connected to a first word line, one of the source and the drain of the second MISFET being connected to a second bit line, the gate of the second MISFET being connected to the first word line, a sense amplifier having an output terminal and connected to the first and second bit lines, and a control circuit which is configured to write data in the memory cell by injecting carriers in the gate insulating layer of the first MISFET.
    Type: Application
    Filed: March 18, 2015
    Publication date: September 24, 2015
    Inventor: Kosuke TATSUMURA