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Ibiquity Digital Corporation patents


Recent patent applications related to Ibiquity Digital Corporation. Ibiquity Digital Corporation is listed as an Agent/Assignee. Note: Ibiquity Digital Corporation may have other listings under different names/spellings. We're not affiliated with Ibiquity Digital Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "I" | Ibiquity Digital Corporation-related inventors


Systems and methods for emergency vehicle proximity warnings using digital radio broadcast

Systems and methods are disclosed for communicating an emergency alert message from a digital radio broadcast transmission system of a mobile vehicle to a digital radio broadcast receiver system. A digital radio broadcast signal including first and second data is broadcasted using the digital radio broadcast transmission system to end-user digital radio broadcast receivers. ... Ibiquity Digital Corporation

Systems and methods for detection of signal quality in digital radio broadcast signals

Systems, methods, and processor readable media are disclosed for detection of signal quality problems and errors in digital radio broadcast signals. First monitoring equipment is located in an over-the-air coverage area of a first radio station. ... Ibiquity Digital Corporation

Method for streaming through a data service over a radio link subsystem

An apparatus for controlling a data rate in a data client for a digital audio broadcasting system includes a buffer for storing data, a codec for coding data, and a control module for controlling a bit rate of the codec in response to a level of the data in the buffer. A method performed by the apparatus is also included.. ... Ibiquity Digital Corporation

Time-alignment measurment for hybrid hd radio technology

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.. ... Ibiquity Digital Corporation

Method and apparatus for blending an audio signal in an in-band on-channel radio system

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.. . ... Ibiquity Digital Corporation

Method and apparatus for level control in blending an audio signal in an in-band on-channel radio system

A method for processing a digital audio broadcast signal includes: separating an analog audio portion and a digital audio portion of the digital audio broadcast signal; determining the loudness of the analog audio portion and the digital audio portion over a first short time interval; using the loudness of the analog and digital audio portions to calculate a short term average gain; determining a long term average gain; converting one of the long term average gain or the short term average gain to db; if an output has been blended to digital, adjusting a digital gain parameter by a preselected increment to produce a digital gain parameter; if an output has not been blended to digital, setting the digital gain parameter to the short term average gain; providing the digital gain parameter to an audio processor; and repeating the above steps using a second short time interval.. . ... Ibiquity Digital Corporation

Method and apparatus for automatic audio alignment in a hybrid radio system

A method of processing a digital radio broadcast signal includes: (a) determining a plurality of current correlation sample values representative of a time delay between samples in an analog audio sample stream and samples in a digital audio sample stream; (b) determining a current inversion status; (c) updating a delay history and an inversion status history; (d) checking the current correlation sample values for consistency with a first confidence threshold; (e) if consistency is found in step (d), determining if each of a first plurality of values in the delay history is consistent within a predetermined range of the current correlation sample values; (f) if consistency is found in step (e), determining if a value in the inversion status history is consistent with the current inversion status; and (g) if the consistency is found in step (f), allowing blending of an output to the digital audio sample stream.. . ... Ibiquity Digital Corporation

Fm analog demodulator compatible with iboc signals

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.. ... Ibiquity Digital Corporation

Method and apparatus for time alignment of analog and digital pathways in a digital radio receiver

A method for processing a radio signal includes producing first and second streams of audio samples; decimating the first and second streams of audio samples to produce first and second streams of decimated streams of audio samples; estimating a first offset value between corresponding samples in the first and second streams of decimated streams of audio samples; shifting one of the first and second streams of audio samples by a first shift value; decimating the first and second streams of audio samples to produce third and fourth streams of decimated audio samples; estimating a second offset value; determining a final offset value based on an intersection of ranges of valid results of the first and second offset values; and shifting one of the first and second streams of audio samples by the final offset value to align the first and second streams of audio samples.. . ... Ibiquity Digital Corporation

System and method for synchronous processing of analog and digital pathways in a digital radio receiver

A method of processing a digital radio broadcast signal in a digital radio receiver includes: receiving baseband signal samples at a first sample rate; adjusting the sample rate of the baseband signals based on a difference between a receiver clock and a transmitter clock to produce adjusted baseband signal samples at a second sample rate; filtering the adjusted baseband signal samples to separate a digital component of the samples and an analog component of the samples, wherein the digital component and the analog component are synchronous; and separately demodulating the digital component and the analog component to produce a digital output signal and an analog output signal. A receiver that uses the method is also provided.. ... Ibiquity Digital Corporation

Systems and methods for digital radio broadcast with cross platform reception

Systems and methods are described for rendering content at a digital radio broadcast receiver system. A digital radio broadcast signal comprises data for rendering content at the digital radio broadcast receiver. ... Ibiquity Digital Corporation








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