Patents by Inventor Christopher S. Tsang

Christopher S. Tsang 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).

  • Speaker assembly
    Patent number: 11950036
    Abstract: An electronic device can include a housing defining an aperture and a display positioned in the aperture. The display and the housing can define an internal volume in which a speaker assembly is positioned. The speaker assembly can include a speaker module and a speaker enclosure in fluid communication, with the speaker enclosure at least partially defining a speaker volume.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: April 2, 2024
    Assignee: APPLE INC.
    Inventors: Paul X. Wang, Chanjuan Feng, Christopher Wilk, Dinesh C. Mathew, Keith J. Hendren, Stuart M. Nevill, Daniel K. Boothe, Nicholas A Rundle, Simon S. Lee, Xiang Zhang, Thomas H. Tsang, Rebecca J. Mikolajczyk
  • Threshold estimation using bit flip counts and minimums
    Patent number: 9812193
    Abstract: A bit flip count is determined for each bin in a plurality of bins, including by: (1) performing a first read on a group of solid state storage cells at a first threshold that corresponds to a lower bound for a given bin and (2) performing a second read on the group of solid state storage cells at a second threshold that corresponds to an upper bound for the given bin. A minimum is determined using the bit flip counts corresponding to the plurality of bins and the minimum is used to estimate an optimal threshold.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: November 7, 2017
    Assignee: SK Hynix Inc.
    Inventors: Christopher S. Tsang, Frederick K. H. Lee, Xiangyu Tang, Zheng Wu, Jason Bellorado
  • Optimal read threshold estimation
    Patent number: 9741431
    Abstract: An optimal read threshold estimation method includes determining a flip difference corresponding to an optimal step size ?opt, estimating a first slope m1 at a first read point and a second slope m2 at a second read point, and obtaining an optimal read threshold (XLPopt) as the intersection of a first line with the first slope m1 and a second line with the second slope m2.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 22, 2017
    Assignee: SK hynix memory solutions Inc.
    Inventors: Naveen Kumar, Frederick K. H. Lee, Christopher S. Tsang, Lingqi Zeng
  • OPTIMAL READ THRESHOLD ESTIMATION
    Publication number: 20160133333
    Abstract: An optimal read threshold estimation method includes determining a flip difference corresponding to an optimal step size ?opt, estimating a first slope m1 at a first read point and a second slope m2 at a second read point, and obtaining an optimal read threshold (XLPopt) as the intersection of a first line with the first slope m1 and a second line with the second slope m2.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 12, 2016
    Inventors: Naveen KUMAR, Frederick K. H. LEE, Christopher S. TSANG, Lingqi ZENG
  • THRESHOLD ESTIMATION USING BIT FLIP COUNTS AND MINIMUMS
    Publication number: 20150131376
    Abstract: A bit flip count is determined for each bin in a plurality of bins, including by: (1) performing a first read on a group of solid state storage cells at a first threshold that corresponds to a lower bound for a given bin and (2) performing a second read on the group of solid state storage cells at a second threshold that corresponds to an upper bound for the given bin. A minimum is determined using the bit flip counts corresponding to the plurality of bins and the minimum is used to estimate an optimal threshold.
    Type: Application
    Filed: September 9, 2014
    Publication date: May 14, 2015
    Inventors: Christopher S. Tsang, Frederick K.H. Lee, Xiangyu Tang, Zheng Wu, Jason Bellorado