[특허]In-band on-channel digital broadcasting

[미국특허] In-band on-channel digital broadcasting 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04K-001/10 H04L-027/28
출원번호	US-0453318 (1995-05-30)
발명자 / 주소	Hunsinger Billie J. Vigil A J. Solie Leland P.
출원인 / 주소	USA Digital Radio Partners, L.P.
대리인 / 주소	Townsend and Townsend and Crew LLPAllen
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

A system for combining AM and FM transmissions. In-band, On-channel, FM Digital Audio Broadcast (IBOC FM-DAB) allows simultaneous transmission of DAB and FM over existing FM allocations without interfering with conventional analog FM signals. The utility of existing FM spectrum allocations is theref

대표청구항 ▼

[ We claim:] [1.] A method for measuring and diminishing the adverse effects of spurious signals in a communications channel, comprising:a) generating a plurality of data subchannel waveforms, wherein each data subchannel waveform is centered at a corresponding distinct frequency and has a first spectral width; each data subchannel waveform carrying a modulation symbol during a band interval;b) generating a wideband pilot reference waveform having a second spectral width which overlaps all the data subchannel waveforms; said reference waveform carrying a reference symbol during said band interval;c) combining the data subchannel waveforms with the reference waveform to produce a channelized data transmitted reference signal;d) transmitting the channelized data transmitted reference signal through the communications channel;e) receiving the channelized data transmitted reference signal and generating a plurality of subchannel baseband signals and a reference sampler signal therefrom;f) generating from said subchannel baseband signals corresponding subchannel matched filter output signals;g) generating from said reference sampler signal a reference sampler matched filter output signal;h) producing, from each subchannel matched filter output signal and the reference sampler matched filter output signal, a subchannel polarity signal; andi) producing, from each subchannel polarity signal, a subchannel output signal.

이 특허를 인용한 특허 (52) 인용/피인용 타임라인 분석

Derek D. Kumar, AM- compatible digital broadcasting method and system.
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Kumar Derek D., AM-compatible digital broadcasting method and system.
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Norman, George I., Apparatus method and system for providing enhanced digital services using an analog broadcast license.
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Chen Brian ; Sundberg Carl-Erik Wilhelm, Band insertion and precancellation technique for simultaneous communication of analog frequency modulated and digitally modulated signals.
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Chen Brian ; Sundberg Carl-Erik Wilhelm, Band insertion and precancellation technique for simultaneous communications of analog frequency-modulated and digitally modulated signals.
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Kroeger Brian William ; Stehlik Roy Ronald ; Cammarata Denise Maureen, Digital audio broadcasting method using puncturable convolutional code.
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Dolman, Rodney A.; Dent, Paul W., Digital format U.S. commercial FM broadcast system.
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Hunsinger, Billie J.; Vigil, Armando J.; Solie, Leland P., In-band on-channel digital broadcasting.
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Mohan,Chandra; Zhang,Zhiming; Apraez,Manuel, In-band-on-channel broadcast system for digital data.
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Vojcic, Branimir R; Bajic, Ivan V; Haghighat, Javad, Joint source-channel decoding with source sequence augmentation.
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St. John James T. ; Janky William O., Message encoding technique for communication systems.
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Don Roy Goldston ; David Carl Hartup ; Marcus McLenn Matherne, Method and apparatus for AM compatible digital broadcasting.
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David Carl Hartup ; Don Roy Goldston, Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal.
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Hartup David Carl ; Goldston Don R., Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal.
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Pierre Andre Laurent FR, Method and device for transmitting mixed analog and digital signals by the same transmitter.
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Hunsinger Bill J. ; Kumar Derek D., Method and system for simultaneously broadcasting and receiving digital and analog signals.
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Hunsinger, Bill J.; Kumar, Derek D., Method and system for simultaneously broadcasting and receiving digital and analog signals.
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Goldston, Don Roy; Hartup, David Carl; Matherne, Marcus McLenn, Method for equalization of complementary carriers in an AM compatible digital audio broadcast system.
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Toporski,Todd Allen; Whikehart,J. William, Method to determine the presence of multi-carrier signals.
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Howard C. Huang, Methods and apparatus for coherent detection of signals with orthogonal data modulation.
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Dapper Mark J. ; Carlin Barry W. ; Geile Michael J., Receiver addressable AM compatible digital broadcast system.
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Englmeier,Martin H., Receiver and system calibration system and method.
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Sahlman Karl-Gosta,SEX, Signal generation in a communications transmitter.
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Isamu Sato JP; Mitsuhiko Sato JP, Spread spectrum communication apparatus.
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Tsujishita Masahiro,JPX ; Taura Kenichi,JPX ; Ohsuga Yoshiharu,JPX ; Ohkubo Tadatoshi,JPX, Synchronizing signal detecting apparatus.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for generating multimedia accompaniments to broadcast data.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for generating multimedia accompaniments to broadcast data.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for generating multimedia accompaniments to broadcast data.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for generating multimedia accompaniments to broadcast data.
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Kroeger Brian W. ; Stehlik Roy R., System and method for mitigating intermittent interruptions in an audio radio broadcast system.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for transmitting digital multimedia data with analog broadcast data.
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Corts, David; Wells, Bryce; Signorelli, Paul; Hunter, Lee; Snyder, Terrance, System and method for transmitting digital multimedia data with analog broadcast data.
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Kasslin Mika,FIX ; Rinne Mika,FIX ; Salomaki Ari,DEX, System for connecting a packet data network to a digital radio network.
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Vojcic, Branimir R; Dogan, Hakan, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Dogan, Hakan, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Dogan, Hakan, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Shayegh, Farnaz, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Shayegh, Farnaz, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Shayegh, Farnaz, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Shayegh, Farnaz; Dogan, Hakan; Lee, Wookwon, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Shayegh, Farnaz; Dogan, Hakan; Lee, Wookwon, Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems.
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Vojcic, Branimir R; Papaharalabos, Stylianos, Systems and methods for encoding and decoding of check-irregular non-systematic IRA codes.
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Vojcic, Branimir R; Papaharalabos, Stylianos, Systems and methods for encoding and decoding of check-irregular non-systematic IRA codes.
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Papadopoulos Haralabos C. ; Sundberg Carl-Erik Wilhelm, Technique for simultaneous communications of analog frequency-modulated and digitally modulated signals using precanceling scheme.
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Cabrera,George, Transmitting RF signals employing improved high-level combinations of analog FM and digital signals.
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Yang, Chao-Tung, Wireless audio frequency playing apparatus and wireless playing system using the same.
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[미국특허] In-band on-channel digital broadcasting 원문보기

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