Patents by Inventor Terence Karanink

Terence Karanink 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).

  • Systems and methods for memory efficient repeatable run out processing
    Patent number: 9305581
    Abstract: Various embodiments of the present invention provide systems and methods for low overhead disk wobble compensation. As an example, a method for performing synchronous wobble compensation processing is disclosed. The method includes providing a medium that includes a servo data region and a user data region. The servo data region includes a clock recovery pattern and a location pattern. A detectable pattern is written to the user data region a known number of bit periods from the location pattern. The detectable pattern is read back, and a fractional processing delay is calculated. Based at least on the fractional processing delay and a known number of bit periods from the location pattern to the end of the servo data region, a wobble compensation pattern is written an integral number of bit periods from the location pattern.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: April 5, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Viswanath Annampedu, Terence Karanink, Xun Zhang, Jeffrey P. Grundvig
  • Systems and Methods for Memory Efficient Repeatable Run Out Processing
    Publication number: 20100142078
    Abstract: Various embodiments of the present invention provide systems and methods for low overhead disk wobble compensation. As an example, a method for performing synchronous wobble compensation processing is disclosed. The method includes providing a medium that includes a servo data region and a user data region. The servo data region includes a clock recovery pattern and a location pattern. A detectable pattern is written to the user data region a known number of bit periods from the location pattern. The detectable pattern is read back, and a fractional processing delay is calculated. Based at least on the fractional processing delay and a known number of bit periods from the location pattern to the end of the servo data region, a wobble compensation pattern is written an integral number of bit periods from the location pattern.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 10, 2010
    Inventors: Viswanath Annampedu, Terence Karanink, Xun Zhang, Jeffrey P. Grundvig