Inventor · disambiguated record
Chris Heegard
Also filed as: HEEGARD CHRIS · HEEGARD CHRIS D
25 granted patents·1,127 citations·filing 1989–2009
97Inventor score
Files withTEXAS INSTRUMENTS INC10GEN INSTRUMENT CORP6ALANTRO COMMUNICATIONS INC2CORNELL RES FOUNDATION INC2AHMED NADEEM1
Top patents by PatentIndex Score
25 records- 0196US5321725AMethod and apparatus for communicating digital information such as compressed video using treillis coded QAMGEN INSTRUMENT CORP·Filed 1992·Granted Jun 14, 1994·190 cites·17 claims
- 0291US5511096AQuadrature amplitude modulated data for standard bandwidth television channelGI CORP·Filed 1994·Granted Apr 23, 1996·143 cites·25 claims
- 0390US5790570AConcatenated trellis coded modulation and linear block codesCORNELL RES FOUNDATION INC·Filed 1996·Granted Aug 4, 1998·74 cites·38 claims
- 0489US5511082APunctured convolutional encoderGEN INSTRUMENT CORP·Filed 1994·Granted Apr 23, 1996·162 cites·4 claims
- 0589US5233629AMethod and apparatus for communicating digital data using trellis coded qamGEN INSTRUMENT CORP·Filed 1991·Granted Aug 3, 1993·140 cites·19 claims
- 0686US7227949B2Separate self-synchronizing packet-based scrambler having replay variationTEXAS INSTRUMENTS INC·Filed 2003·Granted Jun 5, 2007·51 cites·21 claims
- 0777US7505526B2Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersionTEXAS INSTRUMENTS INC·Filed 2006·Granted Mar 17, 2009·5 cites·14 claims
- 0877US6160854AConcatenated trellis coded modulation and linear block codesCORNELL RES FOUNDATION INC·Filed 1998·Granted Dec 12, 2000·36 cites·19 claims
- 0975US5703887ASynchronization and error detection in a packetized data streamGEN INSTRUMENT CORP·Filed 1994·Granted Dec 30, 1997·82 cites·24 claims
- 1072US6701483B1Fast search-based decoding schemeALANTRO COMMUNICATIONS INC·Filed 2000·Granted Mar 2, 2004·19 cites·15 claims
- 1168US5745522ARandomizer for byte-wise scrambling of dataGEN INSTRUMENT CORP·Filed 1995·Granted Apr 28, 1998·63 cites·15 claims
- 1267US7113556B1Reliable decision directed adaptation in a communication system employing forward error controlTEXAS INSTRUMENTS INC·Filed 2000·Granted Sep 26, 2006·12 cites·32 claims
- 1366US6961392B2Joint equalization and decoding using a search-based decoding algorithmTEXAS INSTRUMENTS INC·Filed 2001·Granted Nov 1, 2005·10 cites·12 claims
- 1464US8396142B2System, method, and computer-readable medium for multilevel shaping for wireless communication systemsHEEGARD CHRIS·Filed 2008·Granted Mar 12, 2013·4 cites·28 claims
- 1564US5621761ARotationally invariant trellis coding incorporating transparent binary convolutional codesGEN INSTRUMENT CORP·Filed 1994·Granted Apr 15, 1997·43 cites·27 claims
- 1659US5162791ACollision detection using code rule violations of the manchester codeCODENOLL TECHNOLOGY CORP·Filed 1989·Granted Nov 10, 1992·22 cites·9 claims
- 1755US6993095B2Phase-locked loop initialization via curve-fittingTEXAS INSTRUMENTS INC·Filed 2001·Granted Jan 31, 2006·4 cites·14 claims
- 1851US7508877B2Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersionTEXAS INSTRUMENTS INC·Filed 2006·Granted Mar 24, 2009·0 cites·5 claims
- 1951US7505525B2Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersionTEXAS INSTRUMENTS INC·Filed 2006·Granted Mar 17, 2009·0 cites·14 claims
- 2049US7082168B2Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersionCOFFEY JOHN T·Filed 2003·Granted Jul 25, 2006·2 cites·5 claims
- 2147US6823488B1Packet binary convolutional codesTEXAS INSTRUMENTS INC·Filed 1999·Granted Nov 23, 2004·20 cites·15 claims
- 2247US6782046B1Decision-directed adaptation for coded modulationTEXAS INSTRUMENTS INC·Filed 1999·Granted Aug 24, 2004·25 cites·26 claims
- 2345US7184412B2Method of increasing data rate in a wireless data communication network via clock switchingTEXAS INSTRUMENTS INC·Filed 2002·Granted Feb 27, 2007·0 cites·10 claims
- 2445US6532267B1Variable rate constellation precodingALANTRO COMMUNICATIONS INC·Filed 1999·Granted Mar 11, 2003·20 cites·11 claims
- 2544US8548073B2Method, apparatus and system for using guard tones in OFDM systems for increasing data rates and improving robustnessAHMED NADEEM·Filed 2009·Granted Oct 1, 2013·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →