Patents by Inventor Steve H. Hsu

Steve H. Hsu 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).

  • Frequency domain interference cancellation and equalization for downlink cellular systems
    Patent number: 9002311
    Abstract: Methods and apparatus are described for interference cancellation of interference components of a time domain signal in the frequency domain. A communications device receives a time domain sequence and generates overlapping time domain segments from the time domain sequence. The overlapping time domain segments are then converted to the frequency domain to generate frequency domain representations of the overlapping time domain segments. The frequency domain representations are stored in a residual memory, and interference components are directly removed from the frequency domain representations stored in the residual memory in the frequency domain.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Raheel Khan, Steve H. Hsu
  • Intercell frequency offset compensation for frequency domain interference cancellation and equalization for downlink cellular systems
    Patent number: 9002280
    Abstract: Methods and apparatus are described for interference cancellation of interference components of a time domain signal in the frequency domain. A time domain sequence is received, and a plurality of overlapping time domain segments is generated from the time domain sequence. Frequency offset compensation to compensate for frequency offset associated with a serving cell is performed in the time domain, and the overlapping time domain segments are then converted to the frequency domain. Additional frequency offset compensation may be performed to compensation for the frequency offset associated with interfering cells.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Steve H. Hsu, Raheel Khan
  • INTERCELL FREQUENCY OFFSET COMPENSATION FOR FREQUENCY DOMAIN INTERFERENCE CANCELLATION AND EQUALIZATION FOR DOWNLINK CELLULAR SYSTEMS
    Publication number: 20130184018
    Abstract: Methods and apparatus are described for interference cancellation of interference components of a time domain signal in the frequency domain. A time domain sequence is received, and a plurality of overlapping time domain segments is generated from the time domain sequence. Frequency offset compensation to compensate for frequency offset associated with a serving cell is performed in the time domain, and the overlapping time domain segments are then converted to the frequency domain. Additional frequency offset compensation may be performed to compensation for the frequency offset associated with interfering cells.
    Type: Application
    Filed: July 31, 2012
    Publication date: July 18, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Steve H. Hsu, Raheel Khan
  • FREQUENCY DOMAIN INTERFERENCE CANCELLATION AND EQUALIZATION FOR DOWNLINK CELLULAR SYSTEMS
    Publication number: 20130184019
    Abstract: Methods and apparatus are described for interference cancellation of interference components of a time domain signal in the frequency domain. A communications device receives a time domain sequence and generates overlapping time domain segments from the time domain sequence. The overlapping time domain segments are then converted to the frequency domain to generate frequency domain representations of the overlapping time domain segments. The frequency domain representations are stored in a residual memory, and interference components are directly removed from the frequency domain representations stored in the residual memory in the frequency domain.
    Type: Application
    Filed: July 31, 2012
    Publication date: July 18, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Raheel Khan, Steve H. Hsu
  • Single pass line scanning of an image with a color filter wheel having a plurality of filters
    Patent number: 5555106
    Abstract: A method and apparatus for digitizing color images on photographic and other media insures accurate registration between color planes and provides a digitization capability substantially equivalent to the dynamic range of photographic film.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: September 10, 1996
    Inventor: Steve H. Hsu