Heegard; Chris

Patent Applications and Registrations

Patent applications and USPTO patent grants for Heegard; Chris.The latest application filed is for "method, apparatus and system for using guard tones in ofdm systems for increasing data rates and improving robustness".

Company Profile

0.23.10

Heegard; Chris - Sugarloaf FL US
Heegard; Chris - Key West FL
Heegard; Chris - Santa Rosa CA
Heegard; Chris - Ithaca NY

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method, apparatus and system for using guard tones in OFDM systems for increasing data rates and improving robustness Grant 8,548,073 - Ahmed , et al. October 1, 2	2013-10-01
System, method, and computer-readable medium for multilevel shaping for wireless communication systems Grant 8,396,142 - Heegard , et al. March 12, 2	2013-03-12
Method, Apparatus And System For Using Guard Tones In Ofdm Systems For Increasing Data Rates And Improving Robustness App 20090232238 - Ahmed; Nadeem ; et al.	2009-09-17
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion Grant 7,508,877 - Coffey , et al. March 24, 2	2009-03-24
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion Grant 7,505,526 - Coffey , et al. March 17, 2	2009-03-17
System, Method, And Computer-readable Medium For Multilevel Shaping For Wireless Communication Systems App 20080273614 - Heegard; Chris ; et al.	2008-11-06
Separate self-synchronizing packet-based scrambler having replay variation Grant 7,227,949 - Heegard , et al. June 5, 2	2007-06-05
Method of increasing data rate in a wireless data communication network via clock switching Grant 7,184,412 - Heegard February 27, 2	2007-02-27
Reliable decision directed adaptation in a communication system employing forward error control Grant 7,113,556 - Heegard , et al. September 26, 2	2006-09-26
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion App 20060198458 - Coffey; John T. ; et al.	2006-09-07
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion App 20060198457 - Coffey; John T. ; et al.	2006-09-07
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion App 20060198456 - Coffey; John T. ; et al.	2006-09-07
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion Grant 7,082,168 - Coffey , et al. July 25, 2	2006-07-25
Phase-locked loop initialization via curve-fitting Grant 6,993,095 - Heegard , et al. January 31, 2	2006-01-31
Joint equalization and decoding using a search-based decoding algorithm Grant 6,961,392 - Heegard , et al. November 1, 2	2005-11-01
Packet binary convolutional codes Grant 6,823,488 - Heegard , et al. November 23, 2	2004-11-23
Decision-directed adaptation for coded modulation Grant 6,782,046 - Ling , et al. August 24, 2	2004-08-24
Fast search-based decoding scheme Grant 6,701,483 - Heegard , et al. March 2, 2	2004-03-02
Methods and apparatus for self-inverting turbo code interleaving with high separation and dispersion App 20030219078 - Coffey, John T. ; et al.	2003-11-27
Separate self-synchronizing packet-based scrambler having replay variation App 20030145196 - Heegard, Chris ; et al.	2003-07-31
Method of increasing data rate in a wireless data communication network via clock switching App 20030021289 - Heegard, Chris	2003-01-30
Phase-locked loop initialization via curve-fitting App 20020176520 - Heegard, Chris ; et al.	2002-11-28
Joint equalization and decoding using a search-based decoding algorithm App 20020037059 - Heegard, Chris ; et al.	2002-03-28
Concatenated trellis coded modulation and linear block codes Grant 5,790,570 - Heegard , et al. August 4, 1	1998-08-04
Randomizer for byte-wise scrambling of data Grant 5,745,522 - Heegard April 28, 1	1998-04-28
Synchronization and error detection in a packetized data stream Grant 5,703,887 - Heegard , et al. December 30, 1	1997-12-30
Quadrature amplitude modulated data for standard bandwidth television channel Grant 5,511,096 - Huang , et al. April 23, 1	1996-04-23
Punctured convolutional encoder Grant 5,511,082 - How , et al. April 23, 1	1996-04-23
Method and apparatus for communicating digital information such as compressed video using treillis coded QAM Grant 5,321,725 - Paik , et al. June 14, 1	1994-06-14
Method and apparatus for communicating digital data using trellis coded QAM Grant 5,233,629 - Paik , et al. August 3, 1	1993-08-03
Collision detection using code rule violations of the Manchester code Grant 5,162,791 - Heegard November 10, 1	1992-11-10

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