Patents by Inventor Norio Shuji

Norio Shuji 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).

  • Apparatus for switching channels within a multi-channel read/write preamplifier circuit
    Patent number: 5760635
    Abstract: A switching apparatus for switching between channels within a read/write pre-amplifier circuit in a multi-channel magnetic media storage system switches between the channels and couples an active magnetoresistive sensor to receive biasing current and to a pre-amplifier circuit. When a read operation is requested from a specific channel within the magnetic media storage system, a control signal line corresponding to an appropriate magnetoresistive sensor is activated. Each channel includes a first corresponding transistor which is enabled by an appropriate control signal line, allowing current to flow through the first transistor to enable a second corresponding transistor that is coupled to the magnetoresistive sensor. Once enabled the second transistor couples the magnetoresistive sensor to a pre-amplifier stage and to receive biasing current.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: June 2, 1998
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventors: Mehrdad Nayebi, Mahmud Musbah, Norio Shuji