Patents by Inventor Norihiko Hakushi

Norihiko Hakushi 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).

  • Semiconductor memory device
    Patent number: 7427031
    Abstract: A semiconductor memory device including a flash memory and a RAM incorporating a pseudo-SRAM contained in an MCP, has an internal transfer control signal for controlling internal data transfer between the flash memory and pseudo-SRAM, and an external transfer control signal for controlling data transfer between an external CPU and pseudo-SRAM, as control signals for the pseudo-SRAM. A flash controller in the RAM controls the internal transfer control signal so as to suspend the internal data transfer between the flash memory and pseudo-SRAM when the external CPU requests access to the pseudo-SRAM during the internal data transfer.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: September 23, 2008
    Assignees: Renesas Technology Corp., Renesas Device Design Corp.
    Inventors: Norihiko Hakushi, Atsushi Ohba, Yoshimasa Yoshimura, Takeshi Nakayama
  • Semiconductor memory device
    Publication number: 20060065746
    Abstract: A semiconductor memory device including a flash memory and a RAM incorporating a pseudo-SRAM contained in an MCP, has an internal transfer control signal for controlling internal data transfer between the flash memory and pseudo-SRAM, and an external transfer control signal for controlling data transfer between an external CPU and pseudo-SRAM, as control signals for the pseudo-SRAM. A flash controller in the RAM controls the internal transfer control signal so as to suspend the internal data transfer between the flash memory and pseudo-SRAM when the external CPU requests access to the pseudo-SRAM during the internal data transfer.
    Type: Application
    Filed: October 19, 2005
    Publication date: March 30, 2006
    Applicants: Renesas Technology Corp., Renesas Device Design Corp.
    Inventors: Norihiko Hakushi, Atsushi Ohba, Yoshimasa Yoshimura, Takeshi Nakayama
  • Semiconductor memory device
    Patent number: 7000846
    Abstract: A semiconductor memory device including a flash memory and a RAM incorporating a pseudo-SRAM contained in an MCP, has an internal transfer control signal for controlling internal data transfer between the flash memory and pseudo-SRAM, and an external transfer control signal for controlling data transfer between an external CPU and pseudo-SRAM, as control signals for the pseudo-SRAM. A flash controller in the RAM controls the internal transfer control signal so as to suspend the internal data transfer between the flash memory and pseudo-SRAM when the external CPU requests access to the pseudo-SRAM during the internal data transfer.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 21, 2006
    Assignees: Renesas Technology Corp., Renesas Device Design Corp.
    Inventors: Norihiko Hakushi, Atsushi Ohba, Yoshimasa Yoshimura, Takeshi Nakayama
  • Semiconductor memory device
    Publication number: 20040148457
    Abstract: A semiconductor memory device including a flash memory and a RAM incorporating a pseudo-SRAM contained in an MCP, has an internal transfer control signal for controlling internal data transfer between the flash memory and pseudo-SRAM, and an external transfer control signal for controlling data transfer between an external CPU and pseudo-SRAM, as control signals for the pseudo-SRAM. A flash controller in the RAM controls the internal transfer control signal so as to suspend the internal data transfer between the flash memory and pseudo-SRAM when the external CPU requests access to the pseudo-SRAM during the internal data transfer.
    Type: Application
    Filed: September 5, 2003
    Publication date: July 29, 2004
    Inventors: Norihiko Hakushi, Atsushi Ohba, Yoshimasa Yoshimura, Takeshi Nakayama