Patents by Inventor Robert F. Lay

Robert F. Lay 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).

  • Patent number: 5758275
    Abstract: EMI spur interference is reduced in a system where the desired signal has periodically repeating components without destructively interfering with the repeating components. The frequency of the spur interference is determined (203) and fed to a notch filter (201) so as to center the notch at the frequency of the spur interference. Determination of the frequency is scheduled (601) to avoid cancellation of desired periodically repeating components of the signal.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 26, 1998
    Assignee: Motorola, Inc.
    Inventors: Gregory W. Cox, Robert F. Lay, Douglas M. Hamilton, Mark Gannon, Steven C. Jasper, Manuel P. Gabato
  • Patent number: 5227991
    Abstract: A monitor (102) is suitable for monitoring the data integrity of a comb filter (101). Generally, the filter will include at least one differencer stage, at least one buffer stage, and at least one integrator stage, including an output integrator stage (500). The output integrator stage will include a most-significant input bit (150) ("I"), a most-significant output bit (130) ("O"), and a carry bit (140) ("C"). In one embodiment, the monitor includes a detector (600) for detecting an overflow condition in the filter based on the equation (inverse C) * (O) * (I)+(C) * (inverse O) * (inverse I). The monitor also includes a waveform generator (700) that, in response to the occurrence of an overflow condition, generates a resetting waveform (170) of a predetermined shape and time duration, that is then coupled to the resetting terminals of all stages in the filter.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: July 13, 1993
    Assignee: Motorola, Inc.
    Inventor: Robert F. Lay