Patents by Inventor John W. Nieto

John W. Nieto 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: 10506388
    Abstract: A method for compressing a short message includes receiving a short message that includes a plurality of text strings for compression, dividing the short message into one or more sub-blocks, where a number of text strings in each of the one or more sub-blocks is less than or equal to a predetermined number. The method also includes compressing each of the one or more sub-blocks by identifying a type of a first text string, identifying a code representing the type, determining whether the first text string exists in a library, upon determining that the first text string exists in the library, determining an index corresponding to the first text string, extracting a predetermined number of least significant digits of the index, and replacing the first text string in that sub-block with the code and the extracted predetermined number of least significant digits of the index.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 10, 2019
    Assignee: Harris Global Communications, Inc.
    Inventors: William N. Furman, John W. Nieto, Michael A. Wadsworth
  • Patent number: 10432445
    Abstract: Systems (400) and methods for reducing a number of cyclostationary features in a transmitted signal. The methods comprise: obtaining by a transmitter a discrete-time IF signal comprising a sequence of samples all having a same sample duration; performing operations by a sub-sample dithering processing device of the transmitter to modify a sample timing of the discrete-time IF signal by decreasing or increasing a duration of at least one first sample of the sequence using a digital signal processing technique in a digital domain; converting the discrete-time IF signal to an RF signal; and transmitting the RF signal having a reduced number of cyclo stationary features.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: October 1, 2019
    Assignee: Harris Global Communications, Inc.
    Inventors: James A. Norris, John W. Nieto, Michael A. Wadsworth, William N. Furman
  • Patent number: 10250232
    Abstract: Systems (400) and methods for removing dither introduced into a transmitted RF signal. The method comprising: receiving, by a receiver, the transmitted RF signal; converting, by the receiver, the transmitted RF signal into a discrete-time IF signal comprising a sequence of samples, where at least a first sample of said samples has a first sample duration different than a second sample duration of at least a second sample of said samples; and performing operations by a sub-sample dither removal device of the receiver to modify a sample timing of the discrete-time IF signal by decreasing or increasing the first sample duration of the first sample using a digital signal processing technique in a digital domain.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: April 2, 2019
    Assignee: Harris Global Communications, Inc.
    Inventors: James A. Norris, John W. Nieto, Michael A. Wadsworth, William N. Furman
  • Publication number: 20180059211
    Abstract: Determining a signal emitter location involves receiving a signal of interest (SOI) at detection devices, generating a time stamp corresponding to the arrival of the SOI at each detection device, and communicating digital data samples and the time stamp to a time-difference of arrival (TDOA) computer system. The TDOA computer system determines a TDOA of the SOI at the detection devices relative to an arrival time at a first one of the detection devices having an earliest time stamp. It determines a first solution to identify the emitter location in accordance with a first TDOA solution method. It evaluates the reliability of the first solution and selectively uses a second solution if the first solution is insufficiently reliable.
    Type: Application
    Filed: August 31, 2016
    Publication date: March 1, 2018
    Inventors: William N. Furman, John W. Nieto, Paul E. Voglewede
  • Patent number: 9313061
    Abstract: A wireless communication system may include a first wireless communications device, and a second wireless communications device. The first wireless communications device may include a wireless transmitter, and a modulator coupled to the wireless transmitter for modulating input data to generate a Gaussian phase shift keyed signal having a selected data symbol mapping. The second wireless communications device may include a wireless receiver, and a demodulator coupled to the wireless receiver for demodulating the Gaussian phase shift keyed signal using memory-less symbol decisions based upon the selected data symbol mapping.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 12, 2016
    Assignee: HARRIS CORPORATION
    Inventor: John W. Nieto
  • Patent number: 9118401
    Abstract: A filter for a radio receiving device doubles a sample size of a digital baseband signal to form an enhanced data set and after widowing performs a Fast Fourier Transform (FFT) to facilitate calculation of instantaneous magnitude values and average magnitude values for each of a plurality of frequency bins. A noise floor is calculated based on the average magnitude values of a plurality of the frequency bins, and the noise floor is then used to identify frequency bins which contain an interfering signal. If it is determined that a frequency bin contains spectral energy associated with an interfering signal, then the instantaneous magnitude value of the frequency bin is selectively reduced, after which an inverse FFT operation and inverse window operation is performed.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: August 25, 2015
    Assignee: Harris Corporation
    Inventors: John W. Nieto, Carl Petruzelli, Brian C. Padalino
  • Patent number: 8787432
    Abstract: An HF communication system includes a first device, and a second device. The first device sends a message to the second device, the message including a preamble portion, a variable length data portion after the preamble portion having a given ending point selected from among potential ending points, and a check portion after the variable length data portion indicating an end of the message. The second device performs a decoding operation on the message at a potential ending point, and performs a check operation on a potential check portion of the decoded message, and when the check operation is successful, recovers the variable length data portion from the decoded message. Otherwise, the second device performs another decoding operation on the message at a next potential ending point, and performs another check operation on another potential check portion of the respective decoded message.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 22, 2014
    Assignee: Harris Corporation
    Inventors: William N. Furman, John W. Nieto, Eric N. Koski
  • Patent number: 8731074
    Abstract: The communications device includes a phase and frequency tracking loop having a signal input and an adjustable loop filter that establishes a predetermined tracking loop bandwidth for samples of communication signals received at the signal input and processed within the tracking loop. A tracking loop update circuit updates loop filter operating parameters and is operative with the loop filter for increasing or decreasing the tracking loop bandwidth of the phase and frequency tracking loop based on the dynamics of the frequency offset of measured samples from the output of the loop filter over time.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: May 20, 2014
    Assignee: Harris Corporation
    Inventors: William N. Furman, John W. Nieto, William L. Tyler
  • Patent number: 8644425
    Abstract: A wireless communications device includes a receiver, and a demodulator coupled downstream from the receiver and configured to use a continuous phase modulation (CPM) waveform to non-coherently demodulate a received signal. The demodulator is configured to generate waveform banks, each waveform bank having a respective different frequency offset associated therewith, determine a correlation output metric for each waveform bank, select a waveform bank for demodulating the received signal based upon the correlation output metrics of the waveform banks, and demodulate the received signal using the selected waveform bank and the associated frequency offset.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: February 4, 2014
    Assignee: Harris Corporation
    Inventors: James A. Norris, John W. Nieto
  • Patent number: 8583431
    Abstract: A communications system includes a first communications device cooperating with a second communications device. The first communications device multiplexes a digital speech message and a corresponding text message into a multiplexed signal, and wirelessly transmits the multiplexed signal. The second communications device wirelessly receives the multiplexed signal, de-multiplexes the multiplexed signal digital into the speech message and the corresponding text message, decodes the speech message for an audio output transducer, and operates a text processor on the corresponding text message for display. The corresponding text message is displayed in synchronization with the speech message output by the audio output transducer. A memory is coupled to the text processor for storing the text message, and the text processor is configured to display the stored text message.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: November 12, 2013
    Assignee: Harris Corporation
    Inventors: William N. Furman, John W. Nieto, Marcelo De Risio
  • Patent number: 8571004
    Abstract: A mobile ad-hoc network includes a plurality of N mobile nodes and wireless communication links connecting the mobile nodes, which each include a communications device for transmitting and routing data packets wirelessly to other mobile nodes via the wireless communication links in accordance with a time division multiple access (TDMA) data transmission protocol using a TDMA epoch that is divided into a beacon interval, digital voice interval and digital data interval. The mobile nodes monitor channel conditions using the beacon, digital voice and digital data intervals and provide a network conductivity performance as valid receptions occur within mobile nodes. A data rate is calculated and set for other N?1 mobile nodes using monitored channel conditions for the beacon, digital voice and digital data intervals.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: October 29, 2013
    Assignee: Harris Corporation
    Inventors: Mark W. Chamberlain, David A. Clark, Joseph Shaver, John W. Nieto
  • Patent number: 8565324
    Abstract: A communications device includes a phase and frequency tracking loop having a signal input and adjustable loop filter that establishes a predetermined tracking loop bandwidth for samples of communication signals received at the signal input and processed within the tracking loop. A tracking loop update circuit updates the loop filter operating parameters. It is operative with the loop filter for increasing or decreasing the tracking loop bandwidth of the phase and frequency tracking loop based on the measured signal-to-noise ratio in the received samples of communication signals at the signal output by the tracking loop and on the known or measured apriori tracking capabilities of demodulator based on the symbol rate of communication signal.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: October 22, 2013
    Assignee: Harris Corporation
    Inventors: William N. Furman, John W. Nieto, William L. Tyler
  • Patent number: 8488719
    Abstract: A wireless communications device may be configured to perform a first demodulation based upon a first sampling rate of a received signal to generate a first demodulated signal and determine therefrom whether a first error value is not greater than a first threshold, and, if so then decode the first demodulated signal. If the first error value is greater than the first threshold, a second demodulation is performed based upon a second sampling rate of the received signal greater than or equal to the first sampling rate to generate a second demodulated signal and determine therefrom whether a second error value is not greater than a second threshold, and, if so, then decode the second demodulated signal. If the second error value is greater than the second threshold, the second demodulation is performed at least one additional time with at least one change thereto.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: July 16, 2013
    Assignee: Harris Corporation
    Inventors: John W. Nieto, William N. Furman
  • Publication number: 20130142286
    Abstract: A wireless communications device includes a receiver, and a demodulator coupled downstream from the receiver and configured to use a continuous phase modulation (CPM) waveform to non-coherently demodulate a received signal. The demodulator is configured to generate waveform banks, each waveform bank having a respective different frequency offset associated therewith, determine a correlation output metric for each waveform bank, select a waveform bank for demodulating the received signal based upon the correlation output metrics of the waveform banks, and demodulate the received signal using the selected waveform bank and the associated frequency offset.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 6, 2013
    Applicant: Harris Corporation, Corporation of the State of Delaware
    Inventors: James A. Norris, John W. Nieto
  • Patent number: 8447337
    Abstract: A mobile wireless communications device may include an antenna, a transceiver coupled to the antenna, and a controller coupled to the transceiver. The controller may be configured to determine a received signal characteristic, and to configure parameters of a waveform for adjacent forward transmission blocks to be transmitted as sequential forward transmission blocks and based upon the received signal characteristic. Each forward transmission block may have a preamble portion and an associated body portion. The controller may be further configured to set the preamble portion of each forward transmission block to communicate the parameters of the configured waveform.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: May 21, 2013
    Assignee: Harris Corporation
    Inventors: John W. Nieto, William Nelson Furman
  • Patent number: 8391342
    Abstract: A mobile wireless communications device may include an antenna, and a transceiver coupled to the antenna. The transceiver may use a modulation having memory for a message in a frame structure including a data portion and a termination portion based upon the data portion. The termination portion may drive the modulation to a desired known ending state. The modulation may include a spread spectrum modulation or a non-spread modulation.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: March 5, 2013
    Assignee: Harris Corporation
    Inventors: John W. Nieto, James A. Norris
  • Publication number: 20130054237
    Abstract: A communications system includes a first communications device cooperating with a second communications device. The first communications device multiplexes a digital speech message and a corresponding text message into a multiplexed signal, and wirelessly transmits the multiplexed signal. The second communications device wirelessly receives the multiplexed signal, de-multiplexes the multiplexed signal digital into the speech message and the corresponding text message, decodes the speech message for an audio output transducer, and operates a text processor on the corresponding text message for display. The corresponding text message is displayed in synchronization with the speech message output by the audio output transducer. A memory is coupled to the text processor for storing the text message, and the text processor is configured to display the stored text message.
    Type: Application
    Filed: August 25, 2011
    Publication date: February 28, 2013
    Applicant: Harris Corporation of the State of Delaware
    Inventors: William N. Furman, John W. Nieto, Marcelo De Risio
  • Patent number: 8315244
    Abstract: A wireless communications device may include a transceiver, a memory configured to store a predetermined set of preamble synchronization portions, each preamble synchronization portion having a different length, and a controller cooperating with the transceiver and the memory. The controller may be configured to receive forward transmission blocks, each forward transmission block having a preamble synchronization portion and a body portion associated therewith. The preamble synchronization portion may include a desired preamble synchronization portion from among the predetermined set of preamble synchronization portions. The controller may be configured to determine and use, for each received forward transmission block, the corresponding preamble synchronization portion from among the predetermined set of preamble synchronization portions.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: November 20, 2012
    Assignee: Harris Corporation
    Inventors: John W. Nieto, William N. Furman
  • Patent number: 8311488
    Abstract: An HF radio ALE communication system may include a first HF radio communications device including a first HF radio transceiver and a first controller coupled thereto, and a second HF radio communications device including a second HF radio transceiver and a second controller coupled thereto. The first controller may cooperate with the first HF radio transceiver and may be configured to use ALE to establish a narrowband communication link with the second HF radio communications device, and to communicate a wideband message probe to the second HF radio communications device. The second controller may cooperate with the second HF radio transceiver and may be configured to determine at least one channel characteristic based upon the wideband message probe. The first controller may cooperate with the first HF radio transceiver and may be configured to update the narrowband communication link based upon the at least one channel characteristic.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: November 13, 2012
    Assignee: Harris Corporation
    Inventors: William Nelson Furman, John W. Nieto, Eric N. Koski
  • Patent number: 8213402
    Abstract: A communication system includes a plurality of nodes forming a wireless mesh network. A plurality of wireless communication links connect the nodes together. Each node is formed as a communications device having a physical layer and a media access control (MAC) layer in accordance with the Open System Interconnect (OSI) model and operative for transmitting and receiving communications packets to and from other nodes via the wireless communication links in an Automatic Repeat Request (ARQ) mode. The physical layer monitors channel parameters of the wireless communications link when in an ARQ mode and, based on the channel parameters, communicates to the MAC layer over-the-air (OTA) parameters used for transmitting packets.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 3, 2012
    Assignee: Harris Corporation
    Inventors: John W. Nieto, William N. Furman, Michael A. Wadsworth