Patents by Inventor Kouji Shida

Kouji Shida 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).

  • Peripheral equipment control device
    Patent number: 5892958
    Abstract: A peripheral equipment control LSI interposed between an SCSI bus connected to a main CPU and peripheral equipment such as a file device. The LSI is divided into two major blocks. One block recognizes an SCSI protocol ID signal sent over the SCSI bus. The other block generates a signal that causes the other block to leave a sleep state (low power dissipation mode). In a state in which a command is awaited from the main CPU, the peripheral equipment control LSI allows the block containing the ID recognition part to remain active while the other block is kept in the sleep state. On receiving an ID-based selected (access) signal from the main CPU, the LSI detects the start of an access operation and causes the other block to leave its sleep state and to become active.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: April 6, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Yukari Nagashige, Shoichi Miyazawa, Kunio Watanabe, Kouji Shida, Shinichi Kojima
  • Peripheral equipment control device
    Patent number: 5675812
    Abstract: A peripheral equipment control LSI interposed between an SCSI bus connected to a main CPU and peripheral equipment such as a file device. The LSI is divided into two major blocks. One block recognizes an SCSI protocol ID signal sent over the SCSI bus. The other block generates a signal that causes the other block to leave a sleep state (low power dissipation mode). In a sate in which a command is awaited from the main CPU, the peripheral equipment control LSI allows the block containing the ID recognition part to remain active while the other block is kept in the sleep slate. On receiving an ID-based selected (access) signal from the main CPU, the LSI detects the start of an access operation and causes the other block to leave its sleep state and to become active.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: October 7, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Yukari Nagashige, Shoichi Miyazawa, Kunio Watanabe, Kouji Shida, Shinichi Kojima
  • Peripheral equipment control device
    Patent number: 5479619
    Abstract: A peripheral equipment control LSI interposed between an SCSI bus connected to a main CPU and peripheral equipment such as a file device. The LSI is divided into two major blocks. One block recognizes an SCSI protocol ID signal sent over the SCSI bus. The other block generates a signal that causes the other block to leave a sleep state (low power dissipation mode). In a sate in which a command is awaited from the main CPU, the peripheral equipment control LSI allows the block containing the ID recognition part to remain active while the other block is kept in the sleep state. On receiving an ID-based selected (access) signal from the main CPU, the LSI detects the start of an access operation and causes the other block to leave its sleep state and to become active.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: December 26, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Yukari Nagashige, Shoichi Miyazawa, Kunio Watanabe, Kouji Shida, Shinichi Kojima
  • Peripheral equipment control device
    Patent number: 5361364
    Abstract: A peripheral equipment control LSI interposed between an SCSI bus connected to a main CPU and peripheral equipment such as a file device. The LSI is divided into two major blocks. One block recognizes an SCSI protocol ID signal sent over the SCSI bus. The other block generates a signal that causes the other block to leave a sleep state (low power dissipation mode). In a state in which a command is awaited from the main CPU, the peripheral equipment control LSI allows the block containing the ID recognition part to remain active while the other block is kept in the sleep state. On receiving an ID-based selected (access) signal from the main CPU, the LSI detects the start of an access operation and causes the other block to leave its sleep state and to become active.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: November 1, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yukari Nagashige, Shoichi Miyazawa, Kunio Watanabe, Kouji Shida, Shinichi Kojima