Patents by Inventor Dongtian Lu

Dongtian Lu 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).

  • Multi-rate sigma delta digital-to-analog converter
    Patent number: 8952837
    Abstract: A multi-rate sigma delta digital-to-analog converter may include a signal input and a signal output, and multiple modulators. A first of the modulator may convert a digital input signal on the signal input to an analog output signal on the signal output. Subsequent of the multiple modulators may shape and cancel quantization noise received from a proceeding modulator. One of the modulators may operate at a higher frequency than does another of the multiple modulation loops.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: February 10, 2015
    Assignee: Broadcom Corporation
    Inventors: Min Gyu Kim, Dongtian Lu, Todd L. Brooks
  • MULTI-RATE SIGMA DELTA DIGITAL-TO-ANALOG CONVERTER
    Publication number: 20140240154
    Abstract: A multi-rate sigma delta digital-to-analog converter may include a signal input and a signal output, and multiple modulators. A first of the modulator may convert a digital input signal on the signal input to an analog output signal on the signal output. Subsequent of the multiple modulators may shape and cancel quantization noise received from a proceeding modulator. One of the modulators may operate at a higher frequency than does another of the multiple modulation loops.
    Type: Application
    Filed: September 5, 2013
    Publication date: August 28, 2014
    Applicant: Broadcom Corporation
    Inventors: Min Gyu Kim, Dongtian Lu, Todd L. Brooks