Patents by Inventor Mari Matsumoto

Mari Matsumoto 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: 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
  • 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: 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
  • 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: 20150244373
    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: Application
    Filed: February 18, 2015
    Publication date: August 27, 2015
    Inventors: Mari MATSUMOTO, Kosuke TATSUMURA, Shinichi YASUDA, Koichiro ZAITSU
  • Publication number: 20150214950
    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: January 22, 2015
    Publication date: July 30, 2015
    Inventors: Shinichi YASUDA, Kosuke Tatsumura, Mari Matsumoto, Koichiro Zaitsu, Masato Oda
  • Patent number: 9025373
    Abstract: According to one embodiment, a non-volatile programmable switch according to this embodiment includes first and second non-volatile memory transistors, and a common node that is connected to the output side terminals of the first and second non-volatile memory transistors, and a logic transistor unit that is connected to the common node. A length of a gate electrode of the first and second non-volatile memory transistors in a channel longitudinal direction is shorter than a length of the charge storage film in the channel longitudinal direction.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: May 5, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kosuke Tatsumura, Koichiro Zaitsu, Mari Matsumoto, Shinichi Yasuda
  • Publication number: 20150014748
    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: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Koichiro ZAITSU, Kosuke TATSUMURA, Mari MATSUMOTO
  • Patent number: 8908408
    Abstract: A circuit according to embodiments includes: a plurality of bit-string comparators each of which includes a plurality of single-bit comparators each of which includes first and second input terminals, first and second match-determination terminals, and a memory storing data and inverted data in a pair, the first input terminal being connected to a respective search line, the second input terminal being connected to an inverted search line being paired with the respective search line, and a matching line connecting the first and second match-determination terminals of the single-bit comparators; a pre-charge transistor of which source is connected to a supply voltage line; a common matching line connected to a drain of the pre-charge transistor and the matching lines of the bit-string comparators; and an output inverter of which input is connected to the common matching line.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: December 9, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kosuke Tatsumura, Masato Oda, Atsuhiro Kinoshita, Koichiro Zaitsu, Mari Matsumoto, Shinichi Yasuda
  • Patent number: 8884648
    Abstract: One embodiment provides a programmable logic switch in which a first nonvolatile memory and a second nonvolatile memory are formed in the same well, and in which to change the first nonvolatile memory from an erased state to a written state and leave the second nonvolatile memory being in the erased state, a first write voltage is applied to a first line connected with gate electrodes of the first and second nonvolatile memories, a second write voltage is applied to a second line connected to a source in the first nonvolatile memory, and a third write voltage lower than the second write voltage is applied to a fourth line connected to a source of the second nonvolatile memory.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura, Mari Matsumoto, Shinichi Yasuda, Masato Oda, Haruka Kusai, Kiwamu Sakuma
  • Patent number: 8873287
    Abstract: A nonvolatile programmable logic switch according to an embodiment includes first and second cells, each of the first and second cells including: a first memory having a first to third terminals, the third terminal being receiving a control signal; a first transistor connected at one of source/drain to the second terminal; and a second transistor connected at a gate to the other of the source/drain of the first transistor, the third terminal of the first memory in the first cell and the third terminal of the first memory in the second cell being connected in common. When conducting writing into the first memory in the first cell, the third terminal is connected to a write power supply generating a write voltage, the first terminals in the first and second cells are connected to a ground power supply and a write inhibit power supply generating a write inhibit voltage respectively.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 28, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura, Mari Matsumoto
  • Patent number: 8874631
    Abstract: A random number generation apparatus includes: a random noise generation element comprising a source region and a drain region, a tunnel insulation film, a gate electrode, and a charge trap portion provided between the tunnel insulation film and the gate electrode and being capable of trapping charges, random noise being generated in a drain current flowing between the source region and the drain region on the basis of charges trapped in the charge trap portion; a random number conversion circuit for converting random noise generated from the random noise generation element to a random number; a first test circuit for performing a random number test to test quality of the random number output from the random number conversion circuit; and an initialization circuit for pulling out charges in the charge trap portion of the random noise generation element to the semiconductor substrate through the tunnel insulation film and thereby initializing the charge trap portion.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: October 28, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mari Matsumoto, Tetsufumi Tanamoto, Shinichi Yasuda
  • Patent number: 8860459
    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 18, 2012
    Date of Patent: October 14, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichiro Zaitsu, Kosuke Tatsumura, Mari Matsumoto
  • Patent number: 8856199
    Abstract: A random number generator circuit includes: an element generating and outputting physical random numbers; a digitizing circuit digitizing the physical random numbers to output a random number sequence tested by a testing circuit; and an error correcting code circuit including a shift register having the random number sequence input thereto, a multiplier multiplying the stored random number sequence by an error-correcting-code generating matrix, and a selector switch outputting one of an output of the shift register and an output of the multiplier in accordance with a test result obtained by the testing circuit. The error correcting code circuit outputs the output of the multiplier as a corrected random number sequence from the selector switch when the result of a test conducted by the testing circuit indicates a rejection. The testing circuit tests the corrected random number sequence when the result of the test indicates a rejection.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: October 7, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsufumi Tanamoto, Mari Matsumoto, Shinobu Fujita, Kazutaka Ikegami
  • Patent number: 8842475
    Abstract: According to one embodiment, a configuration memory includes first and second data lines, a first memory string which comprises at least first and second nonvolatile memory transistors which are connected in series between a common node and the first data line, a second memory string which comprises at least third and fourth nonvolatile memory transistors which are connected in series between the common node and the second data line, and a flip-flop circuit which comprises a first data holding node connected to the common node and a second data holding node connected to a configuration data output node.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 23, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kosuke Tatsumura, Masato Oda, Koichiro Zaitsu, Atsushi Kawasumi, Mari Matsumoto, Shinichi Yasuda
  • Patent number: 8836007
    Abstract: According to one embodiment, a programmable logic switch includes first and second word lines above a first path transistor, a first pillar passing through the first and second word lines and connected to the first path transistor, a second pillar passing through the first and second word lines and connected to the first path transistor, a first memory device between the first pillar and the first word line, a second memory device between the first pillar and the second word line, a third memory device between the second pillar and the first word line, and a fourth memory device between the second pillar and the second word line.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 16, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mari Matsumoto, Shinichi Yasuda, Masato Oda, Kosuke Tatsumura, Koichiro Zaitsu, Shuou Nomura, Yoshihisa Iwata