Patents by Inventor Timothy Ted Walker

Timothy Ted Walker 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: 6757118
    Abstract: A programmable controller and method for correcting operation of a read/write head in a disc drive having an embedded servo system in which the head is not reading correctly operates by applying a write current to the failed head only after the head is positioned over an area of a disc that does not have useful data thereon. Movement and position of the head that is not reading correctly is determined from a signal from an adjacent head. The adjacent head is used to read servo information. After the adjacent head has provided servo information and the controller repositions the adjacent head in a safe area, a write current is applied to the failed head to realign the head without the potential of adversely impacting data stored in adjacent tracks.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: June 29, 2004
    Assignee: Seagate Technology LLC
    Inventors: Timothy Ted Walker, Matthew Chad Burton
  • Patent number: 6643081
    Abstract: The present invention uses temperature readings obtained aperiodically, on demand. Rather than merely obtaining temperature readings on each expiration of a fixed timer, operating parameters are updated in response to a fault detected in the data path. Data handling systems of the present invention each include at least one data path having a thermal range within which it operates best. Applicant notes that some “key” operating parameters typically have a substantial effect on this thermal range. Temperature sensors positioned near the transducers provide a temperature reading to control circuits, which update “key” operating parameter values in response to indications of faults in a primary data path. This reduces the need for more frequent temperature monitoring and calculation-intensive recalibration.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: November 4, 2003
    Assignee: Seagate Technology LLC
    Inventors: Timothy Ted Walker, Shawn Alan Wakefield, Daniel Thomas Kiser
  • Patent number: 6266203
    Abstract: A method and apparatus are disclosed for optimizing operational performance of a disc drive. The disc drive is provided with an integrated temperature measurement circuit which provides a temperature measurement signal indicative of operational temperature of the disc drive. The integrated temperature measurement circuit is formed as part of an application specific integrated circuit (ASIC) housing additional circuitry used by the disc drive during operation. A parametric configuration circuit, operably coupled to the integrated temperature measurement circuit, identifies selected parameters for use by the disc drive to optimize disc drive performance, the parameters arranged as a plurality of parameter sets corresponding to a plurality of predefined operational temperature ranges.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: July 24, 2001
    Assignee: Seagate Technology LLC
    Inventors: David Ray Street, John Michael Baker, Karl Louis Enarson, Timothy Ted Walker, Ronald Duane Metzner, Anish A. Ukani