Patents by Inventor Kenichi Kaki

Kenichi Kaki 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: 20120011307
    Abstract: A semiconductor storage apparatus is coupled with a system bus to receive a write request accompanied with first and second blocks of data, which are stored in nonvolatile semiconductor memories. A control device sends a first erase command to one of the nonvolatile memories to initiate a first internal erase operation of data within the nonvolatile memories. After the first erase command has been sent, the control device sends a second erase command to another one of the nonvolatile memories, to initiate a second internal erase operation of data within the other nonvolatile memory.
    Type: Application
    Filed: August 16, 2011
    Publication date: January 12, 2012
    Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
  • Patent number: 8031536
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 4, 2011
    Assignee: S4, Inc.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 8001319
    Abstract: A semiconductor storage apparatus is coupled with a system bus to receive a write request accompanied with first and second blocks of data, which are stored in nonvolatile semiconductor memories. A control device sends a first erase command to one of the nonvolatile memories to initiate a first internal erase operation of data within the nonvolatile memories. After the first erase command has been sent, the control device sends a second erase command to another one of the nonvolatile memories, to initiate a second internal erase operation of data within the other nonvolatile memory.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: August 16, 2011
    Assignee: Solid State Storage Solutions, Inc.
    Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
  • Publication number: 20100191902
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Application
    Filed: March 29, 2010
    Publication date: July 29, 2010
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7715243
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: May 11, 2010
    Assignee: S4, Inc.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Publication number: 20090228643
    Abstract: A semiconductor storage apparatus is coupled with a system bus to receive a write request accompanied with first and second blocks of data, which are stored in nonvolatile semiconductor memories. A control device sends a first erase command to one of the nonvolatile memories to initiate a first internal erase operation of data within the nonvolatile memories. After the first erase command has been sent, the control device sends a second erase command to another one of the nonvolatile memories, to initiate a second internal erase operation of data within the other nonvolatile memory.
    Type: Application
    Filed: May 15, 2009
    Publication date: September 10, 2009
    Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
  • Patent number: 7447072
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 4, 2008
    Assignee: Solid State Storage Solutions LLC
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7379379
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: May 27, 2008
    Assignee: Solid State Storage Solutions LLC
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Publication number: 20080106939
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Application
    Filed: December 17, 2007
    Publication date: May 8, 2008
    Inventors: Hajim Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7327624
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: February 5, 2008
    Assignee: Solid State Storage Solutions, LLC
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Publication number: 20070076507
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Application
    Filed: November 15, 2006
    Publication date: April 5, 2007
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Publication number: 20070070694
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Application
    Filed: November 15, 2006
    Publication date: March 29, 2007
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Publication number: 20070058475
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Application
    Filed: November 15, 2006
    Publication date: March 15, 2007
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7184320
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: February 27, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7154805
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: December 26, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7123519
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 17, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7082510
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: July 25, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7064995
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: June 20, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7006386
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 28, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
  • Patent number: 7002851
    Abstract: A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 21, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno