Patents by Inventor Philip David Steiner

Philip David Steiner 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).

  • Method and apparatus for determining a loss of signal condition
    Patent number: 7254169
    Abstract: A loss-of-signal (LOS) condition is detected by sampling input data for a predetermined time period, comparing a magnitude of the sampled input data to a threshold signal strength level, and asserting a LOS indication if the number of samples that have signal strength less than the threshold signal strength level is less than a predetermined value.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: August 7, 2007
    Assignee: Silicon Laboratories Inc.
    Inventors: Philip David Steiner, Michael H. Perrott, Vadim Gutnik
  • Calibration of a loss of signal detection system
    Patent number: 6799131
    Abstract: An integrated circuit has a loss of signal (LOS) system for detecting a loss of signal condition for an input data stream according to a LOS threshold. The LOS threshold specifies a minimum signal magnitude indicating the loss of signal condition. The integrated circuit includes a sampling circuit to sample a LOS signal, which receives a sampling threshold specifying a signal magnitude for a sampled signal above which the sampling circuit samples the sampled signal as a first digital value and below which the sampling circuit samples the sampled signal as a second digital value. A digital control circuit coupled to an output of the sampling circuit generates a calibrated digital representation of the sampling threshold according to a plurality of samples of the LOS signal. The calibrated sampling threshold is then used during loss of signal evaluation.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: September 28, 2004
    Assignee: Silicon Laboratories Inc.
    Inventors: Philip David Steiner, Michael H. Perrott
  • Use of dual hysteresis modes in determining a loss of signal output indication
    Patent number: 6489803
    Abstract: A loss of signal condition is evaluated for an input data stream according to a signal strength threshold level. The signal strength threshold level is determined according to a supplied loss of signal (LOS) threshold level. Two hysteresis modes are used to ensure the hysteresis at low LOS threshold levels is sufficient. The first mode uses hysteresis for the signal strength threshold level that is proportional to the LOS threshold level when the LOS threshold level is above a predetermined level. The second mode employs fixed hysteresis for the signal strength threshold level when the LOS threshold level is below the predetermined level. The hysteresis provides a signal strength threshold level that has a greater magnitude on deassertion of a loss of signal indication than on assertion of the loss of signal indication.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: December 3, 2002
    Assignee: Silicon Laboratories, Inc.
    Inventors: Philip David Steiner, Gerard Pepenella