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).
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Publication number: 20120011307Abstract: 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: ApplicationFiled: August 16, 2011Publication date: January 12, 2012Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
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Patent number: 8031536Abstract: 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: GrantFiled: March 29, 2010Date of Patent: October 4, 2011Assignee: S4, Inc.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 8001319Abstract: 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: GrantFiled: May 15, 2009Date of Patent: August 16, 2011Assignee: Solid State Storage Solutions, Inc.Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
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Publication number: 20100191902Abstract: 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: ApplicationFiled: March 29, 2010Publication date: July 29, 2010Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7715243Abstract: 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: GrantFiled: December 17, 2007Date of Patent: May 11, 2010Assignee: S4, Inc.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Publication number: 20090228643Abstract: 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: ApplicationFiled: May 15, 2009Publication date: September 10, 2009Inventors: Kenichi Kaki, Kunihiro Katayama, Takashi Tsunehiro
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Patent number: 7447072Abstract: 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: GrantFiled: November 15, 2006Date of Patent: November 4, 2008Assignee: Solid State Storage Solutions LLCInventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7379379Abstract: 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: GrantFiled: November 15, 2006Date of Patent: May 27, 2008Assignee: Solid State Storage Solutions LLCInventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Publication number: 20080106939Abstract: 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: ApplicationFiled: December 17, 2007Publication date: May 8, 2008Inventors: Hajim Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7327624Abstract: 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: GrantFiled: November 15, 2006Date of Patent: February 5, 2008Assignee: Solid State Storage Solutions, LLCInventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Publication number: 20070076507Abstract: 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: ApplicationFiled: November 15, 2006Publication date: April 5, 2007Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Publication number: 20070070694Abstract: 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: ApplicationFiled: November 15, 2006Publication date: March 29, 2007Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Publication number: 20070058475Abstract: 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: ApplicationFiled: November 15, 2006Publication date: March 15, 2007Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7184320Abstract: 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: GrantFiled: June 28, 2005Date of Patent: February 27, 2007Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7154805Abstract: 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: GrantFiled: March 22, 2005Date of Patent: December 26, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7123519Abstract: 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: GrantFiled: March 22, 2005Date of Patent: October 17, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7082510Abstract: 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: GrantFiled: March 22, 2005Date of Patent: July 25, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7064995Abstract: 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: GrantFiled: March 22, 2005Date of Patent: June 20, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7006386Abstract: 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: GrantFiled: March 22, 2005Date of Patent: February 28, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
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Patent number: 7002851Abstract: 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: GrantFiled: March 22, 2005Date of Patent: February 21, 2006Assignee: Renesas Technology Corp.Inventors: Hajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno