Patents by Inventor Naoko Takemoto

Naoko Takemoto 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).

  • Resistivity sense bias circuits and methods of operating the same
    Patent number: 7961418
    Abstract: Resistivity sense bias circuits are described herein. An example resistivity sense bias circuit for use with a magnetoresistive read head includes a current biasing portion configured to provide a bias current across the magnetoresistive read head thereby establishing a bias voltage across the magnetoresistive read head, a resistivity sensing portion coupled to the current biasing portion and configured to sense a change in the bias current based on a resistivity change of the magnetoresistive read head, and a voltage source to provide the bias voltage and to adjust the bias voltage in response to the resistivity change of the magnetoresistive read head.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: June 14, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Naoko Takemoto, Motomu Hashizume
  • RESISTIVITY SENSE BIAS CIRCUITS AND METHODS OF OPERATING THE SAME
    Publication number: 20080278859
    Abstract: Resistivity sense bias circuits are described herein. An example resistivity sense bias circuit for use with a magnetoresistive read head includes a current biasing portion configured to provide a bias current across the magnetoresistive read head thereby establishing a bias voltage across the magnetoresistive read head, a resistivity sensing portion coupled to the current biasing portion and configured to sense a change in the bias current based on a resistivity change of the magnetoresistive read head, and a voltage source to provide the bias voltage and to adjust the bias voltage in response to the resistivity change of the magnetoresistive read head.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Naoko Takemoto, Motomu Hashizume