Patents by Inventor Dylan A. Hester

Dylan A. Hester 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).

  • Publication number: 20090292843
    Abstract: A demodulator can include first data and clock pads to couple the demodulator to a host device via a first bus, and second data and clock pads to couple the demodulator to a radio frequency (RF) tuner via a second bus. The device may further include passthrough logic to couple host data and a host clock from the first bus to the second bus and to couple tuner data from the second bus to the first bus during a passthrough mode. During this mode, however, the two buses may remain electrically decoupled. When the passthrough mode is disabled, the RF tuner is thus shielded from noise present on the first bus.
    Type: Application
    Filed: May 21, 2008
    Publication date: November 26, 2009
    Inventors: Scott Haban, Dylan Hester, Ruifeng Sun
  • Patent number: 7536164
    Abstract: A technique includes selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator. The technique includes repeating the selective coupling in a feedback loop to cause the first frequency to be near a second frequency.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: May 19, 2009
    Assignee: Silicon Laboratories Inc.
    Inventors: James P. Maligeorgos, Dylan A. Hester, Augusto M. Marques, G. Tyson Tuttle
  • Publication number: 20060068736
    Abstract: A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.
    Type: Application
    Filed: April 22, 2005
    Publication date: March 30, 2006
    Inventors: Donald Kerth, James Maligeorgos, Dylan Hester, Lysander Lim, Augusto Marques, G. Tuttle
  • Publication number: 20060068744
    Abstract: A technique includes selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator. The technique includes repeating the selective coupling in a feedback loop to cause the first frequency to be near a second frequency.
    Type: Application
    Filed: April 22, 2005
    Publication date: March 30, 2006
    Inventors: James Maligeorgos, Dylan Hester, Augusto Marques, G. Tuttle
  • Publication number: 20050212585
    Abstract: A bias system is disclosed including a calibration bus to which a controller, a reference bias source, a master bias source, and first and second slave bias sources are coupled. The controller varies a control code sent over the calibration bus to the master bias source until a particular control code is found that causes the bias signal of the master bias source to equal a desired bias value which is provided by the reference bias source. The controller then sends the particular control code to the first and second slave bias sources to cause the first and second slave bias sources to generate a bias signal having the same desired bias value as the master bias source.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 29, 2005
    Applicant: Silicon Laboratories Inc.
    Inventors: Donald Kerth, Augusto Marques, Dylan Hester, Russell Croman
  • Patent number: 6946898
    Abstract: A bias system is disclosed including a calibration bus to which a controller, a reference bias source, a master bias source, and first and second slave bias sources are coupled. The controller varies a control code sent over the calibration bus to the master bias source until a particular control code is found that causes the bias signal of the master bias source to equal a desired bias value which is provided by the reference bias source. The controller then sends the particular control code to the first and second slave bias sources to cause the first and second slave bias sources to generate a bias signal having the same desired bias value as the master bias source. Isolation between load circuits coupled to the first and second bias sources is thus enhanced while providing low noise, stable operation.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: September 20, 2005
    Assignee: Silicon Laboratories, Inc.
    Inventors: Donald A. Kerth, Augusto M. Marques, Dylan Hester, Russell Croman
  • Patent number: 6489901
    Abstract: A sample rate converter 210, 209 includes a filter 210 for processing digital data in response to a clock controlled by a clock enable signal, the filter 210 receiving the digital data at a first sampling rate and outputting digital data at a second sampling rate. Resampler circuitry 209 generates first selected periods of the clock enable signal having a first duty cycle approximating a ratio between the first sampling rate and the second sampling rate. Selectively, selected periods of the clock enable signal are generated having a second duty cycle for minimizing an error accumulated over the first selected periods of the clock enable signal.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: December 3, 2002
    Assignee: Cirrus Logic, Inc.
    Inventors: Anand Venkitachalam, Dylan Hester, Joe Welser, Rajendra Datar, Krishnan Subramoniam
  • Patent number: 6011501
    Abstract: Digital-to-analog conversion circuitry 100 is shown including a path for processing data in a 1-bit format. First portion of an analog finite impulse response filter 300 includes pre-selected number of delay elements 301 for receiving stream of data in the 1-bit format and outputting a plurality of signals in response. A switched capacitor digital-to-analog converter 106 forms a second portion of the finite impulse response filter 301 and has a plurality of elements each receiving one of the plurality of signals as selected to effectuate a set of filter coefficients, converter 106 summing the plurality of signals and outputting an analog data stream.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: January 4, 2000
    Assignee: Cirrus Logic, Inc.
    Inventors: Xue-Mei Gong, John James Paulos, Mark Alexander, Eric Gaalaas, Dylan Hester