Inventor · disambiguated record
Daozheng Lu
Also filed as: LU DAOZHENG
36 granted patents·9 pending applications·10,262 citations·filing 1984–2011
99Inventor score
Top patents by PatentIndex Score
45 records- 0199US5481294AAudience measurement system utilizing ancillary codes and passive signaturesNIELSEN A C CO·Filed 1993·Granted Jan 2, 1996·1.5k cites·37 claims
- 0299US5031228AImage recognition system and methodNIELSEN A C CO·Filed 1988·Granted Jul 9, 1991·390 cites·40 claims
- 0399US4677466ABroadcast program identification method and apparatusNIELSEN A C CO·Filed 1985·Granted Jun 30, 1987·1.2k cites·90 claims
- 0498US7941816B2Detection of media links in broadcast signalsNIELSEN CO US LLC·Filed 2010·Granted May 10, 2011·74 cites·8 claims
- 0598US7587728B2Methods and apparatus to monitor reception of programs and content by broadcast receiversNIELSEN CO US LLC·Filed 2006·Granted Sep 8, 2009·104 cites·40 claims
- 0698US7421723B2Detection of media links in broadcast signalsNIELSEN MEDIA RES INC·Filed 2001·Granted Sep 2, 2008·232 cites·9 claims
- 0798US4858000AImage recognition audience measurement system and methodNIELSEN A C CO·Filed 1988·Granted Aug 15, 1989·392 cites·27 claims
- 0898US4697209AMethods and apparatus for automatically identifying programs viewed or recordedNIELSEN A C CO·Filed 1984·Granted Sep 29, 1987·929 cites·108 claims
- 0997US7958526B2Source detection apparatus and method for audience measurementNIELSEN CO US LLC·Filed 2010·Granted Jun 7, 2011·34 cites·35 claims
- 1097US6675383B1Source detection apparatus and method for audience measurementNIELSEN MEDIA RES INC·Filed 1997·Granted Jan 6, 2004·249 cites·58 claims
- 1197US6513161B2Monitoring system for recording deviceNIELSEN MEDIA RES INC·Filed 2001·Granted Jan 28, 2003·106 cites·14 claims
- 1297US5550928AAudience measurement system and methodNIELSEN A C CO·Filed 1992·Granted Aug 27, 1996·615 cites·22 claims
- 1396US7757248B2Detection of media links in broadcast signalsNIELSEN CO US LLC·Filed 2008·Granted Jul 13, 2010·60 cites·11 claims
- 1496US5771307AAudience measurement system and methodNIELSEN MEDIA RES INC·Filed 1995·Granted Jun 23, 1998·556 cites·28 claims
- 1596US4644509AUltrasonic audience measurement system and methodNIELSEN A C CO·Filed 1986·Granted Feb 17, 1987·158 cites·22 claims
- 1695US5737025ACo-channel transmission of program signals and ancillary signalsNIELSEN MEDIA RES INC·Filed 1995·Granted Apr 7, 1998·261 cites·34 claims
- 1794US7672843B2Audio signature extraction and correlationNIELSEN CO US LLC·Filed 2005·Granted Mar 2, 2010·55 cites·21 claims
- 1894US6647548B1Coded/non-coded program audience measurement systemNIELSEN MEDIA RES INC·Filed 1996·Granted Nov 11, 2003·367 cites·37 claims
- 1994US5594934AReal time correlation meterNIELSEN A C CO·Filed 1994·Granted Jan 14, 1997·464 cites·55 claims
- 2094US5243423ASpread spectrum digital data transmission over TV videoNIELSEN A C CO·Filed 1991·Granted Sep 7, 1993·429 cites·17 claims
- 2193US6035177ASimultaneous transmission of ancillary and audio signals by means of perceptual codingMOSES DONALD W·Filed 1996·Granted Mar 7, 2000·437 cites·25 claims
- 2293US5432864AIdentification card verification systemLU DAOZHENG·Filed 1992·Granted Jul 11, 1995·496 cites·4 claims
- 2391US8776103B2Interactive service device metering systemsLU DAOZHENG·Filed 2009·Granted Jul 8, 2014·14 cites·75 claims
- 2491US7647605B2Coded/non-coded program audience measurement systemNIELSEN CO US LLC·Filed 2008·Granted Jan 12, 2010·15 cites·25 claims
- 2591US6467089B1Audience measurement system incorporating a mobile handsetNIELSEN MEDIA RES INC·Filed 1997·Granted Oct 15, 2002·373 cites·67 claims
- 2690US8732738B2Audience measurement systems and methods for digital televisionLU DAOZHENG·Filed 2011·Granted May 20, 2014·9 cites·27 claims
- 2788US8434100B2Source detection apparatus and method for audience measurementWHEELER HENRY B·Filed 2011·Granted Apr 30, 2013·9 cites·29 claims
- 2887US7742737B2Methods and apparatus for identifying a digital audio signalNIELSEN CO US LLC·Filed 2002·Granted Jun 22, 2010·26 cites·32 claims
- 2987US5737026AVideo and data co-channel communication systemNIELSEN MEDIA RES INC·Filed 1995·Granted Apr 7, 1998·118 cites·39 claims
- 3087US5165069AMethod and system for non-invasively identifying the operational status of a VCRNIELSEN A C CO·Filed 1990·Granted Nov 17, 1992·96 cites·17 claims
- 3186US5331544AMarket research method and system for collecting retail store and shopper market research dataNIELSEN A C CO·Filed 1992·Granted Jul 19, 1994·443 cites·22 claims
- 3285US8244527B2Audio signature extraction and correlationSRINIVASAN VENUGOPAL·Filed 2010·Granted Aug 14, 2012·13 cites·22 claims
- 3381US7644422B2Interactive service device metering systemsNIELSEN CO US LLC·Filed 2002·Granted Jan 5, 2010·21 cites·38 claims
- 3474US8548373B2Methods and apparatus for identifying a digital audio signalPEIFFER JOHN C·Filed 2010·Granted Oct 1, 2013·3 cites·20 claims
- 3571US7774807B2Source detection apparatus and method for audience measurementNIELSEN CO US LLC·Filed 2003·Granted Aug 10, 2010·6 cites·33 claims
- 3666US7607147B1Interactive service device metering systemsNIELSEN CO US LLC·Filed 1996·Granted Oct 20, 2009·41 cites·103 claims
- 3757US2007055987A1Audience measurement systems and methods for digital televisionLU DAOZHENG·Filed 2006·Application pending·0 cites
- 3853US2004058675A1Coded/non-coded program audience measurement systemNIELSEN MEDIA RES INC·Filed 2003·Application pending·0 cites
- 3952US2004181799A1Apparatus and method for measuring tuning of a digital broadcast receiverNIELSEN MEDIA RES INC·Filed 2004·Application pending·0 cites
- 4051US2011179447A1Detection of media links in broadcast signalsHARKNESS DAVID H·Filed 2011·Application pending·0 cites
- 4150US2002010919A1Audience measurement system for digital televisionNIELSEN MEDIA RES INC·Filed 2001·Application pending·0 cites
- 4250US2002059577A1Audience measurement system for digital televisionNIELSEN MEDIA RES INC·Filed 2001·Application pending·0 cites
- 4346US2003131350A1Method and apparatus for identifying a digital audio signalFiled 2002·Application pending·0 cites
- 4445US2002114299A1Apparatus and method for measuring tuning of a digital broadcast receiverFiled 2000·Application pending·0 cites
- 4543US2002059576A1Metering viewing of video displayed in windowsFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →