Patents by Inventor Brian W. Kroeger
Brian W. Kroeger 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).
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Publication number: 20230361915Abstract: A method comprises partitioning a data object into a sequence of nested data objects each including fragments having K symbols per fragment. The method further comprises processing the nested data objects to produce sequences of coded payloads corresponding to the nested data objects. The processing includes, for each nested data object: using (n, K) coding for which n>K, individually coding the fragments of the nested data object into codewords with n codeword symbols per codeword; and generating, from the codewords, a sequence of coded payloads that are unique for the nested data object. The method further comprises transmitting coded payloads of the sequences of coded payloads.Type: ApplicationFiled: July 19, 2023Publication date: November 9, 2023Applicant: iBiquity Digital CorporationInventors: Paul Peyla, Brian W. Kroeger, Gadiel Seroussi
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Patent number: 11190334Abstract: A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.Type: GrantFiled: May 21, 2020Date of Patent: November 30, 2021Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Publication number: 20200287703Abstract: A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.Type: ApplicationFiled: May 21, 2020Publication date: September 10, 2020Inventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: 10727980Abstract: A radio transmitter comprises transmitting circuitry and processing circuitry. The transmitting circuitry broadcasts a frequency modulation (FM) in-band on-channel (IBOC) radio signal, wherein the FM IBOC radio signal includes multiple subcarriers grouped into multiple frequency partitions. The processing circuitry is configured to receive input bits for transmitting; encode and puncture the input bits using forward error correction (FEC) encoding; distribute encoded input bits between a main encoded component and a backup encoded component, wherein encoded bits of the backup encoded component are delayed for a specified duration relative to encoded bits of the main encoded component; allocate the encoded input bits of the main and backup encoded components into frequency diverse sidebands of the FM IBOC radio signal; and modulate the encoded input bits for transmitting using the frequency diverse sidebands of the FM IBOC radio signal, wherein the modulation is a type of quadrature amplitude modulation (QAM).Type: GrantFiled: May 18, 2018Date of Patent: July 28, 2020Assignee: Ibiquity Digital CorporationInventors: Paul J. Peyla, Brian W. Kroeger, Jeffrey S. Baird
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Patent number: 10666416Abstract: A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.Type: GrantFiled: February 25, 2019Date of Patent: May 26, 2020Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Publication number: 20190349132Abstract: A radio transmitter comprises transmitting circuitry and processing circuitry. The transmitting circuitry broadcasts a frequency modulation (FM) in-band on-channel (IBOC) radio signal, wherein the FM IBOC radio signal includes multiple subcarriers grouped into multiple frequency partitions. The processing circuitry is configured to receive input bits for transmitting; encode and puncture the input bits using forward error correction (FEC) encoding; distribute encoded input bits between a main encoded component and a backup encoded component, wherein encoded bits of the backup encoded component are delayed for a specified duration relative to encoded bits of the main encoded component; allocate the encoded input bits of the main and backup encoded components into frequency diverse sidebands of the FM IBOC radio signal; and modulate the encoded input bits for transmitting using the frequency diverse sidebands of the FM IBOC radio signal, wherein the modulation is a type of quadrature amplitude modulation (QAM).Type: ApplicationFiled: May 18, 2018Publication date: November 14, 2019Inventors: Paul J. Peyla, Brian W. Kroeger, Jeffrey S. Baird
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Patent number: 10355908Abstract: A radio receiver comprises physical layer circuitry and processor circuitry. The physical layer circuitry receives quadrature amplitude modulation (QAM) symbols via a plurality of subcarriers included in a broadcast radio signal. Each received QAM symbol is a complex symbol comprising multiple bits of encoded source information. The processing circuitry demodulates the received data symbols, generates a constellation sample for each received QAM symbol, generates a soft metric for each bit of encoded information of the received QAM symbols using the constellation sample, and multiplies the soft metric by a channel state information (CSI) weight to produce a Log-likelihood Ratio (LLR) approximation for each bit of encoded information of the received QAM symbols.Type: GrantFiled: March 6, 2018Date of Patent: July 16, 2019Assignee: Ibiquity Digital CorporationInventors: Paul J. Peyla, Brian W. Kroeger
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Publication number: 20190190691Abstract: A method for processing audio signals in a radio transmitter, includes: receiving an analog audio sample stream and a digital audio sample stream; determining offsets in time between the analog audio stream and the digital audio stream using a normalized cross-correlation of audio envelopes of the analog audio sample stream and the digital audio sample stream; filtering the determined offsets in time to produce filtered offset values; determining an alignment slip adjustment value as a function of the filtered offset values; aligning the analog audio sample stream and the digital audio sample stream using the determined alignment slip adjustment value; and generating a hybrid radio signal for broadcast that includes time-aligned analog audio and digital audio.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Inventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: 10248496Abstract: A method for processing a digital signal includes: receiving a plurality of protocol data units, each having a header including a plurality of control word bits; and a plurality of audio frames, each including a cyclic redundancy check code; decoding the protocol data units using an iterative decoding technique, wherein the iterative decoding technique uses a soft output decoding algorithm for iterations after the first iteration; and using decoded cyclic redundancy check codes to flag the audio frames containing errors. A receiver that implements the method is also provided.Type: GrantFiled: May 1, 2014Date of Patent: April 2, 2019Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: 10225070Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.Type: GrantFiled: November 27, 2017Date of Patent: March 5, 2019Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Publication number: 20180139035Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.Type: ApplicationFiled: November 27, 2017Publication date: May 17, 2018Inventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: 9832007Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.Type: GrantFiled: April 14, 2016Date of Patent: November 28, 2017Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Publication number: 20170302432Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.Type: ApplicationFiled: April 14, 2016Publication date: October 19, 2017Inventors: Brian W. Kroeger, Paul J. Peyla
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Publication number: 20170272143Abstract: A method for processing a digital audio broadcast signal in a radio receiver includes: receiving a digital audio broadcast signal; demodulating the digital audio broadcast signal to produce an analog audio stream and a digital audio stream; determining a digital signal quality value for the digital audio stream; blending an output of the radio receiver from the analog audio stream to the digital audio stream when the digital signal quality value exceeds an adaptive analog-to-digital threshold value; and blending the output of the radio receiver from the digital audio stream to the analog audio stream when the digital signal quality value falls below an adaptive digital-to-analog threshold value, wherein the adaptive digital-to-analog threshold value is lower than the adaptive analog-to-digital threshold value.Type: ApplicationFiled: March 16, 2016Publication date: September 21, 2017Inventors: Brian W. Kroeger, Paul J. Peyla, Jeffrey S. Baird
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Patent number: 9768853Abstract: A method for processing a digital audio broadcast signal in a radio receiver includes: receiving a digital audio broadcast signal; demodulating the digital audio broadcast signal to produce an analog audio stream and a digital audio stream; determining a digital signal quality value for the digital audio stream; blending an output of the radio receiver from the analog audio stream to the digital audio stream when the digital signal quality value exceeds an adaptive analog-to-digital threshold value; and blending the output of the radio receiver from the digital audio stream to the analog audio stream when the digital signal quality value falls below an adaptive digital-to-analog threshold value, wherein the adaptive digital-to-analog threshold value is lower than the adaptive analog-to-digital threshold value.Type: GrantFiled: March 16, 2016Date of Patent: September 19, 2017Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla, Jeffrey S. Baird
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Publication number: 20170155413Abstract: A method is disclosed which comprises receiving a radio signal; sampling and filtering the radio signal to isolate the FM portion; demodulating the FM portion of the received signal; applying a sliding window to the first, second, and third samples; and, adjusting the value of the second sample if the product of the second sample times the sum of the first and third samples is less than a threshold value. In various embodiments, an apparatus may be provided which comprises an input for receiving a radio signal and processing circuitry for performing various methods described herein.Type: ApplicationFiled: February 13, 2017Publication date: June 1, 2017Inventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: 9634704Abstract: A method includes: receiving an FM radio signal including an analog-modulated portion; digitally sampling an analog-modulated portion of the radio signal to produce a plurality of samples; using a ratio between an average magnitude and an RMS magnitude of a block of the samples to compute a signal quality metric; detecting sum and difference components of the baseband multiplex signal content; using the baseband content to produce an output signal; and blending the output signal from stereo to monaural as the signal quality metric falls below a threshold value.Type: GrantFiled: October 22, 2015Date of Patent: April 25, 2017Assignee: iBiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Method and apparatus for implementing signal quality metrics and antenna diversity switching control
Patent number: 9544039Abstract: A method for detecting the digital quality of a radio signal includes: receiving a radio signal including an analog modulated portion; digitally sampling an analog modulated portion of the radio signal to produce a plurality of samples; using a ratio between an average magnitude and an RMS magnitude of a block of the samples to compute an analog signal quality metric. Receivers that implement the method are also provided.Type: GrantFiled: October 22, 2015Date of Patent: January 10, 2017Assignee: iBiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla -
Patent number: 9479197Abstract: A method includes: constructing complementary low density parity check codewords by generating a first codeword having a first code rate; and partitioning the first codeword by assigning groups of bits of the first codeword to four quarter-partitions, wherein each of the quarter partitions includes bits in one half of one of four independently decodable semi-codewords each having a second code rate that is larger than the first code rate. Receivers that receive signals produced by the method are also disclosed.Type: GrantFiled: August 4, 2015Date of Patent: October 25, 2016Assignee: iBiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla
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Patent number: RE48966Abstract: A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.Type: GrantFiled: November 13, 2019Date of Patent: March 8, 2022Assignee: Ibiquity Digital CorporationInventors: Brian W. Kroeger, Paul J. Peyla