Assignee
IBIQUITY DIGITAL CORP
US·128 granted patents·28 pending applications·2,460 citations·filing 1997–2025
Top patents by PatentIndex Score
156 records- 0195US9832007B2Time-alignment measurement for hybrid HD radio™ technologyIBIQUITY DIGITAL CORP·Filed 2016·Granted Nov 28, 2017·8 cites·16 claims
- 0294US7933368B2Method and apparatus for implementing a digital signal quality metricIBIQUITY DIGITAL CORP·Filed 2007·Granted Apr 26, 2011·26 cites·32 claims
- 0392US6523147B1Method and apparatus for forward error correction coding for an AM in-band on-channel digital audio broadcasting systemIBIQUITY DIGITAL CORP·Filed 1999·Granted Feb 18, 2003·106 cites·32 claims
- 0491US9768853B1Method and apparatus for blending an audio signal in an in-band on-channel radio systemIBIQUITY DIGITAL CORP·Filed 2016·Granted Sep 19, 2017·6 cites·20 claims
- 0591US6345377B1Digital audio broadcasting method using puncturable convolutional codeIBIQUITY DIGITAL CORP·Filed 2000·Granted Feb 5, 2002·66 cites·23 claims
- 0690US9876592B2Systems and methods for detection of signal quality in digital radio broadcast signalsIBIQUITY DIGITAL CORP·Filed 2016·Granted Jan 23, 2018·7 cites·34 claims
- 0790US6671340B1Method and apparatus for reduction of interference in FM in-band on-channel digital audio broadcasting receiversIBIQUITY DIGITAL CORP·Filed 2000·Granted Dec 30, 2003·57 cites·29 claims
- 0889US10868621B1Connected Radio local, isolated, and hybrid implementationIBIQUITY DIGITAL CORP·Filed 2019·Granted Dec 15, 2020·7 cites·19 claims
- 0989US10355908B1CSI estimation and LLR approximation for QAM demodulation in FM HD radio receiversIBIQUITY DIGITAL CORP·Filed 2018·Granted Jul 16, 2019·7 cites·20 claims
- 1089US9986401B2Systems and methods for emergency vehicle proximity warnings using digital radio broadcastIBIQUITY DIGITAL CORP·Filed 2015·Granted May 29, 2018·7 cites·18 claims
- 1189US9379918B1System and method for increasing throughput in digital radio broadcast receiverIBIQUITY DIGITAL CORP·Filed 2015·Granted Jun 28, 2016·9 cites·29 claims
- 1289US8014446B2Method and apparatus for store and replay functions in a digital radio broadcasting receiverIBIQUITY DIGITAL CORP·Filed 2006·Granted Sep 6, 2011·18 cites·53 claims
- 1389US7733983B2Symbol tracking for AM in-band on-channel radio receiversIBIQUITY DIGITAL CORP·Filed 2005·Granted Jun 8, 2010·19 cites·20 claims
- 1489US7043681B2Digital audio broadcasting method and apparatus using complementary pattern-mapped convolutional codesIBIQUITY DIGITAL CORP·Filed 2002·Granted May 9, 2006·61 cites·25 claims
- 1589US6901242B2System and method for mitigating intermittent interruptions in an audio radio broadcast systemIBIQUITY DIGITAL CORP·Filed 2000·Granted May 31, 2005·48 cites·13 claims
- 1688US7873120B2Forward error correction coding for AM 9kHz and 10kHz in-band on-channel digital audio broadcasting systemsIBIQUITY DIGITAL CORP·Filed 2010·Granted Jan 18, 2011·10 cites·14 claims
- 1788US7546088B2Method and apparatus for blending an audio signal in an in-band on-channel radio systemIBIQUITY DIGITAL CORP·Filed 2004·Granted Jun 9, 2009·42 cites·29 claims
- 1888US6735257B2Audio blend method and apparatus for AM and FM in-band on-channel digital audio broadcastingIBIQUITY DIGITAL CORP·Filed 2003·Granted May 11, 2004·38 cites·16 claims
- 1987US11025354B2Targeted fingerprinting of radio broadcast audioIBIQUITY DIGITAL CORP·Filed 2019·Granted Jun 1, 2021·4 cites·20 claims
- 2087US8351843B2Digital radio broadcast receiver, broadcasting methods and methods for tagging content of interestIBIQUITY DIGITAL CORP·Filed 2007·Granted Jan 8, 2013·13 cites·26 claims
- 2187US8027419B2Method for alignment of analog and digital audio in a hybrid radio waveformIBIQUITY DIGITAL CORP·Filed 2005·Granted Sep 27, 2011·12 cites·15 claims
- 2287US7512175B2Method for synchronizing exporter and exciter clocksIBIQUITY DIGITAL CORP·Filed 2005·Granted Mar 31, 2009·11 cites·15 claims
- 2386US9755598B2Method and apparatus for level control in blending an audio signal in an in-band on-channel radio systemIBIQUITY DIGITAL CORP·Filed 2015·Granted Sep 5, 2017·5 cites·20 claims
- 2486US7191136B2Efficient coding of high frequency signal information in a signal using a linear/non-linear prediction model based on a low pass basebandIBIQUITY DIGITAL CORP·Filed 2002·Granted Mar 13, 2007·90 cites·32 claims
- 2585US9407383B2Apparatus and method for distributing content from an HD radio systemIBIQUITY DIGITAL CORP·Filed 2014·Granted Aug 2, 2016·7 cites·20 claims
- 2685US7680201B2Forward error correction coding for AM 9kHz and 10kHz in-band on-channel digital audio broadcasting systemsIBIQUITY DIGITAL CORP·Filed 2008·Granted Mar 16, 2010·10 cites·14 claims
- 2785US7551675B2Method and apparatus for synchronized transmission and reception of data in a digital audio broadcasting systemIBIQUITY DIGITAL CORP·Filed 2003·Granted Jun 23, 2009·33 cites·13 claims
- 2885US6563880B1Method and system for simultaneously broadcasting and receiving digital and analog signalsIBIQUITY DIGITAL CORP·Filed 1999·Granted May 13, 2003·122 cites·31 claims
- 2984US10727980B2Lumb service modes for FM HD radio broadcastsIBIQUITY DIGITAL CORP·Filed 2018·Granted Jul 28, 2020·4 cites·30 claims
- 3084US10666416B2Time-alignment measurement for hybrid HD radio technologyIBIQUITY DIGITAL CORP·Filed 2019·Granted May 26, 2020·2 cites·20 claims
- 3184US10582363B2Systems and methods for emergency vehicle proximity warnings using digital radio broadcastIBIQUITY DIGITAL CORP·Filed 2018·Granted Mar 3, 2020·3 cites·17 claims
- 3284US9106472B1Channel state information (CSI) estimation and applications for in-band on-channel radio receiversIBIQUITY DIGITAL CORP·Filed 2014·Granted Aug 11, 2015·7 cites·20 claims
- 3384US7982683B2Antenna design for FM radio receiversIBIQUITY DIGITAL CORP·Filed 2007·Granted Jul 19, 2011·14 cites·32 claims
- 3484US7305043B2Method and apparatus for formatting signals for digital audio broadcasting transmission and receptionIBIQUITY DIGITAL CORP·Filed 2003·Granted Dec 4, 2007·36 cites·48 claims
- 3584US7221917B2Adjacent channel interference mitigation for FM digital audio broadcasting receiversIBIQUITY DIGITAL CORP·Filed 2002·Granted May 22, 2007·27 cites·19 claims
- 3684US7127008B2Coherent AM demodulator using a weighted LSB/USB sum for interference mitigationIBIQUITY DIGITAL CORP·Filed 2003·Granted Oct 24, 2006·23 cites·38 claims
- 3783US10225070B2Time-alignment measurment for hybrid HD radio technologyIBIQUITY DIGITAL CORP·Filed 2017·Granted Mar 5, 2019·3 cites·24 claims
- 3883US10177729B1Auto level in digital radio systemsIBIQUITY DIGITAL CORP·Filed 2018·Granted Jan 8, 2019·5 cites·20 claims
- 3983US9596044B2Method and apparatus for analog and digital audio blend for HD radio receiversIBIQUITY DIGITAL CORP·Filed 2015·Granted Mar 14, 2017·9 cites·20 claims
- 4083US7697620B2Equalizer for AM in-band on-channel radio receiversIBIQUITY DIGITAL CORP·Filed 2005·Granted Apr 13, 2010·9 cites·15 claims
- 4182US9634704B2FM analog demodulator compatible with IBOC signalsIBIQUITY DIGITAL CORP·Filed 2015·Granted Apr 25, 2017·3 cites·12 claims
- 4282US8676114B2Digital radio broadcast receiver, broadcasting methods and methods for tagging content of interestIBIQUITY DIGITAL CORP·Filed 2012·Granted Mar 18, 2014·5 cites·15 claims
- 4382US7724850B2Coherent track for FM IBOC receiver using a switch diversity antenna systemIBIQUITY DIGITAL CORP·Filed 2004·Granted May 25, 2010·29 cites·15 claims
- 4482US7305056B2Coherent tracking for FM in-band on-channel receiversIBIQUITY DIGITAL CORP·Filed 2003·Granted Dec 4, 2007·27 cites·25 claims
- 4582US6982948B2Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcastingIBIQUITY DIGITAL CORP·Filed 2003·Granted Jan 3, 2006·29 cites·30 claims
- 4682US6845230B2System and method for a push-pull gateway-directed digital receiverIBIQUITY DIGITAL CORP·Filed 2001·Granted Jan 18, 2005·53 cites·26 claims
- 4781US6895060B2Adaptive weighting method for orthogonal frequency division multiplexed soft symbols using channel state information estimatesIBIQUITY DIGITAL CORP·Filed 2001·Granted May 17, 2005·20 cites·9 claims
- 4881US6891898B2System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast systemIBIQUITY DIGITAL CORP·Filed 2002·Granted May 10, 2005·29 cites·56 claims
- 4981US6178317B1System and method for mitigating intermittent interruptions in an audio radio broadcast systemIBIQUITY DIGITAL CORP·Filed 1997·Granted Jan 23, 2001·114 cites·34 claims
- 5080US7352817B2Method and apparatus for interleaving signal bits in a digital audio broadcasting systemIBIQUITY DIGITAL CORP·Filed 2003·Granted Apr 1, 2008·26 cites·46 claims
Showing the top 50 of 156 patent records by PatentIndex Score.
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