Patents by Inventor Rintaro Imai

Rintaro Imai 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).

  • Memory control device and semiconductor processing apparatus
    Patent number: 8397036
    Abstract: The present invention provides a memory control device and a semiconductor processing apparatus which can be flexibly made adapted to a plurality of kinds of semiconductor memories. An SDRAM controller has: a register unit to which a command to be issued and a minimum interval (wait time) between issue of the command and issue of the next command are written by a CPU; and a command issuing unit that stops issue of the next command until the minimum interval written in the register elapses since issue of the command written in the register. Therefore, by changing software for the CPU, the SDRAM controller can be flexibly adapted to a plurality of kinds of SDRAMs.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: March 12, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Rintaro Imai, Satoshi Nakano
  • MEMORY CONTROL DEVICE AND SEMICONDUCTOR PROCESSING APPARATUS
    Publication number: 20120159002
    Abstract: The present invention provides a memory control device and a semiconductor processing apparatus which can be flexibly made adapted to a plurality of kinds of semiconductor memories. An SDRAM controller has: a register unit to which a command to be issued and a minimum interval (wait time) between issue of the command and issue of the next command are written by a CPU; and a command issuing unit that stops issue of the next command until the minimum interval written in the register elapses since issue of the command written in the register. Therefore, by changing software for the CPU, the SDRAM controller can be flexibly adapted to a plurality of kinds of SDRAMs.
    Type: Application
    Filed: February 27, 2012
    Publication date: June 21, 2012
    Inventors: Rintaro IMAI, Satoshi Nakano
  • Memory control device and semiconductor processing apparatus
    Patent number: 8151065
    Abstract: The present invention provides a memory control device and a semiconductor processing apparatus which can be flexibly made adapted to a plurality of kinds of semiconductor memories. An SDRAM controller has: a register unit to which a command to be issued and a minimum interval (wait time) between issue of the command and issue of the next command are written by a CPU; and a command issuing unit that stops issue of the next command until the minimum interval written in the register elapses since issue of the command written in the register. Therefore, by changing software for the CPU, the SDRAM controller can be flexibly adapted to a plurality of kinds of SDRAMs.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: April 3, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Rintaro Imai, Satoshi Nakano
  • MEMORY CONTROL DEVICE AND SEMICONDUCTOR PROCESSING APPARATUS
    Publication number: 20090089517
    Abstract: The present invention provides a memory control device and a semiconductor processing apparatus which can be flexibly made adapted to a plurality of kinds of semiconductor memories. An SDRAM controller has: a register unit to which a command to be issued and a minimum interval (wait time) between issue of the command and issue of the next command are written by a CPU; and a command issuing unit that stops issue of the next command until the minimum interval written in the register elapses since issue of the command written in the register. Therefore, by changing software for the CPU, the SDRAM controller can be flexibly adapted to a plurality of kinds of SDRAMs.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Inventors: Rintaro Imai, Satoshi Nakano