Patents by Inventor Shuichiro Azuma

Shuichiro Azuma 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).

  • Patent number: 8291149
    Abstract: A storage device includes a drive selection section (1), a hard disk drive (HDD) (2), and a non-volatile memory drive (3). When an instruction such as a data I/O instruction is issued from a host such as a CPU (5) and an ATA controller (6) to the hard disk drive (HDD) (2), the drive selection section (1) receives the address value. If the address value is included in the address space predefined, the non-volatile memory drive (3) is made to execute the instruction. Otherwise, the hard disk drive (HDD) (2) is made to execute the instruction.
    Type: Grant
    Filed: July 5, 2004
    Date of Patent: October 16, 2012
    Assignee: Hitachi ULSI Systems Co., Ltd.
    Inventors: Shuichiro Azuma, Masahiro Matsumoto, Takayuki Okinaga, Shigeru Takemura, Yoshiyuki Kimata, Takayuki Kishimoto
  • Publication number: 20120239865
    Abstract: A storage device realizing an improvement in rewrite endurance of a nonvolatile memory and an improvement in data transfer rate of write and read operations is provided including a nonvolatile memory; a volatile memory for storing file management information of the nonvolatile memory; a controller for controlling the nonvolatile memory and the volatile memory; and a power supply maintaining unit for supplying power to the nonvolatile memory, the volatile memory, or the controller upon power shutdown. The controller reads the file management information in the nonvolatile memory upon power-on and writes the same in the volatile memory, and read and write operations are performed based on the file management information in the volatile memory, and the file management information in the volatile memory is written in the nonvolatile memory upon power shutdown.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Applicant: HITACHI ULSI SYSTEMS CO., LTD.
    Inventors: Masahiro Matsumoto, Takayuki Okinaga, Shuichiro Azuma, Shigeru Takemura, Yasuyuki Koike, Kazuki Makuni
  • Patent number: 8205034
    Abstract: A storage device realizing an improvement in rewrite endurance of a nonvolatile memory and an improvement in data transfer rate of write and read operations is provided including a nonvolatile memory; a volatile memory for storing file management information of the nonvolatile memory; a controller for controlling the nonvolatile memory and the volatile memory; and a power supply maintaining unit for supplying power to the nonvolatile memory, the volatile memory, or the controller upon power shutdown. The controller reads the file management information in the nonvolatile memory upon power-on and writes the same in the volatile memory, and read and write operations are performed based on the file management information in the volatile memory, and the file management information in the volatile memory is written in the nonvolatile memory upon power shutdown.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: June 19, 2012
    Assignee: Hitachi ULSI Systems Co., Ltd.
    Inventors: Masahiro Matsumoto, Takayuki Okinaga, Shuichiro Azuma, Shigeru Takemura, Yasuyuki Koike, Kazuki Makuni
  • Publication number: 20100180068
    Abstract: A storage device realizing an improvement in rewrite endurance of a nonvolatile memory and an improvement in data transfer rate of write and read is provided including a nonvolatile memory 101; a volatile memory 106 for storing file management information of the nonvolatile memory 101; a controller 103 for controlling the nonvolatile memory 101 and the volatile memory 106; and a power supply maintaining unit 105 for supplying power to the nonvolatile memory 101, the volatile memory 106, or the controller 103 upon power shutdown. The controller 103 reads the file management information in the nonvolatile memory 101 upon power-on and writes the same in the volatile memory 106, and read and write operations are performed based on the file management information in the volatile memory 106, and the file management information in the volatile memory 106 is written in the nonvolatile memory 101 upon power shutdown.
    Type: Application
    Filed: July 4, 2007
    Publication date: July 15, 2010
    Inventors: Masahiro Matsumoto, Takayuki Okinaga, Shuichiro Azuma, Shigeru Takemura, Yasuyuki Koike, Kazuki Makuni
  • Publication number: 20080117548
    Abstract: A storage device includes a drive selection section (1), a hard disk drive (HDD) (2), and a non-volatile memory drive (3). When an instruction such as a data I/O instruction is issued from a host such as a CPU (5) and an ATA controller (6) to the hard disk drive (HDD) (2), the drive selection section (1) receives the address value. If the address value is included in the address space predefined, the non-volatile memory drive (3) is made to execute the instruction. Otherwise, the hard disk drive (HDD) (2) is made to execute the instruction.
    Type: Application
    Filed: July 5, 2004
    Publication date: May 22, 2008
    Inventors: Shuichiro Azuma, Masahiro Matsumoto, Takayuki Okinaga, Shigeru Takemura, Yoshiyuki Kimata, Takayuki Kishimoto
  • Patent number: 6169325
    Abstract: To realize low-profile electronic apparatus (a memory module and a memory card) of a large storage size by mounting tape carrier packages (TCPs) with a memory chip encapsulated onto a wiring board in high density. To be more specific, a TCP is composed of an insulating tape, leads formed on one side thereof, a potting resin with a semiconductor chip encapsulated, and a pair of support leads arranged on two opposite short sides. The pair of support leads function to hold the TCP at a constant tilt angle relative to the mounting surface of the wiring board. By varying the length vertical to the mounting surface, the TCP can be mounted to a desired tilt angle.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: January 2, 2001
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Shuichiro Azuma, Takayuki Okinaga, Takashi Emata, Tomoaki Kudaishi, Tamaki Wada, Kunihiko Nishi, Masachika Masuda, Toshio Sugano