Patents by Inventor Steven Granz

Steven Granz 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).

  • Shingled magnetic recording for writing tracks of variable track width
    Patent number: 10008231
    Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 26, 2018
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Steven Granz, Edward Gage, Alfredo Chu, Wenzhong Zhu
  • HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS
    Publication number: 20180047422
    Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.
    Type: Application
    Filed: October 26, 2017
    Publication date: February 15, 2018
    Inventors: Steven Granz, Edward Gage, Alfredo Chu, Wenzhong Zhu
  • Heat-assisted shingled magnetic recording with variable track widths
    Patent number: 9830940
    Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: November 28, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventor: Steven Granz
  • HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS
    Publication number: 20170330591
    Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    Inventors: Steven Granz, Edward Gage, Alfredo Chu, Wenzhong Zhu
  • Write current parameter selection for magnetic recording
    Patent number: 9805741
    Abstract: A storage device includes a storage medium and a storage device controller that selectively varies a value of at least one write current parameter to generate alternating data tracks of variable written track width. According to one implementation, the alternating data tracks of variable written track width are generated with a single writer.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: October 31, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Minjie Ma, Steven Granz, Kaizhong Gao
  • Single writer interlaced magnetic recording
    Patent number: 9672851
    Abstract: A storage device includes a storage medium, a magnetic recording head, and a controller configured to operate the magnetic recording head to write consecutive data tracks at a uniform written track width and further configured to write data to alternating data tracks of the consecutive data tracks prior to writing data to at least one track interlaced with the alternating data tracks.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 6, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Kaizhong Gao, Steven Granz, Gene Sandler
  • Enhanced capacity recording
    Patent number: 9607631
    Abstract: A storage device includes a storage controller configured to write a band of data tracks using a first recording method until criterion is met. The first method may be a conventional recording method. After the criterion is met, the storage controller is configured to write data to the band using a second recording method. The second recording method may be an enhanced capacity recording method such as interlaced magnetic recording (IMR) or shingled magnetic recording (SMR).
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 28, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Tim Rausch, Minjie Ma, Steven Granz, Kaizhong Gao, Wenzhong Zhu, Edward C. Gage
  • ENHANCED CAPACITY RECORDING
    Publication number: 20160148626
    Abstract: A storage device includes a storage controller configured to write a band of data tracks using a first recording method until criterion is met. The first method may be a conventional recording method. After the criterion is met, the storage controller is configured to write data to the band using a second recording method. The second recording method may be an enhanced capacity recording method such as interlaced magnetic recording (IMR) or shingled magnetic recording (SMR).
    Type: Application
    Filed: November 24, 2015
    Publication date: May 26, 2016
    Inventors: Tim Rausch, Minjie Ma, Steven Granz, Kaizhong Gao, Wenzhong Zhu, Edward C. Gage