Patents by Inventor Hamid Ghazvini

Hamid Ghazvini 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).

  • Method and system for optical calibration
    Patent number: 8964515
    Abstract: A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Seagate Technology LLC
    Inventors: Hamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
  • METHOD AND SYSTEM FOR OPTICAL CALIBRATION
    Publication number: 20140113064
    Abstract: A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 24, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Hamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
  • Method and system for optical calibration
    Patent number: 8619528
    Abstract: A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: December 31, 2013
    Assignee: Seagate Technology LLC
    Inventors: Hamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
  • METHOD AND SYSTEM FOR OPTICAL CALIBRATION
    Publication number: 20130051206
    Abstract: A system and method of calibrating optical measuring equipment includes optically measuring discrete objects of a first known predictable pattern from a calibration apparatus, wherein the first known predictable pattern is a bit pattern. A recording surface optical reader is calibrated based on the optically measuring. Using the first known predictable pattern, contamination is filtered from the results of the optically measuring.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: SEAGATE TECHNOLOGY, LLC
    Inventors: Hamid Ghazvini, David Kuo, Minh Huong Le, Kim Yang Lee, HongYing Wang, Nobuo Kurataka, Yautzong Hsu, Henry Hung Yang
  • Hybrid burnishing head design for improved burnishing of disk media
    Publication number: 20060286912
    Abstract: A hybrid burnishing head for processing of surfaces of hard disk media comprises a solid body including a first major surface and a second, opposed major surface comprising a burnishing surface including first and second surface portions, wherein the first surface portion is configured for providing air bearing stability and flyability of the head over the media surface, the second surface portion is configured for providing burnishing of a media surface, and the first and second surface portions are operatively decoupled for simultaneously providing optimized air bearing stability/flyability and burnishing aggressiveness for a particular application.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 21, 2006
    Inventors: Yong Hu, Pranesh Swamy, Eric Dahlin, Hamid Ghazvini
  • High speed glide test for screening magnetic disc micro-waviness and a system therefor
    Publication number: 20050022586
    Abstract: A system and a method for measuring micro-waviness of a magnetic recording disk using a high-speed glide test are disclosed. The HSG test is a viable production-level test methodology for high performance media that require well-controlled and low micro-waviness.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 3, 2005
    Inventors: Yong Hu, Eric Dahlin, Shih-Fu Lee, Hamid Ghazvini, Elias Johnson