Inventor
NORRELL ANDREW L
US40 patents
⚠️ This page may combine multiple inventors who share the name “NORRELL ANDREW L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3COM CORP
15 patentsUS6084883AJul 4, 2000
Efficient data transmission over digital telephone networks using multiple modulus conversion
3COM CORP176 citations99
US6853637B1Feb 8, 2005
Converged home gateway
3COM CORP135 citations96
US6034993AMar 7, 2000
Method and apparatus for adaptively equalizing a signal received from a remote transmitter
3COM CORP53 citations96
US5793821AAug 11, 1998
Timing Recovery using group delay compensation
3COM CORP50 citations93
US6690666B1Feb 10, 2004
Packet modulation for DSL
3COM CORP28 citations92
US6285709B1Sep 4, 2001
Error filtering in a hybrid equalizer system
3COM CORP39 citations92
US6115395ASep 5, 2000
Method of detecting network impairments for high speed data communication over conventional subscriber lines
3COM CORP38 citations92
US7529229B1May 5, 2009
Converged home gateway
3COM CORP16 citations90
US6111920AAug 29, 2000
Method and system for timing recovery in a baud-rate sampled data stream
3COM CORP8 citations74
US6094422AJul 25, 2000
Echo canceller touch-up period in an echo-cancelling modem
3COM CORP9 citations74
US5872836AFeb 16, 1999
Host computer digital signal processing system for communicating over voice-grade telephone channels
3COM CORP8 citations74
US6255967B1Jul 3, 2001
Frame-based spectral shaping method and apparatus
3COM CORP5 citations72
US5999109ADec 7, 1999
Frame-based spectral shaping method and apparatus
3COM CORP13 citations72
US7519168B2Apr 14, 2009
Host computer digital signal processing system for communicating over voice-grade telephone channels
3COM CORP4 citations63
US6693997B1Feb 17, 2004
Host computer digital signal processing system for communicating over voice-grade telephone channels
3COM CORP5 citations63
2WIRE INC
14 patentsUS7194023B2Mar 20, 2007
Loop extender with communications, control, and diagnostics
2WIRE INC114 citations98
US6507608B1Jan 14, 2003
Multi-line ADSL modulation
2WIRE INC98 citations98
US6965636B1Nov 15, 2005
System and method for block error correction in packet-based digital communications
2WIRE INC68 citations97
US7190716B2Mar 13, 2007
Line powered loop extender with communications, control, and diagnostics
2WIRE INC57 citations96
US7023910B1Apr 4, 2006
Dual-line DSL system and method
2WIRE INC31 citations93
US6529549B1Mar 4, 2003
System and method for an equalizer-based symbol timing loop
2WIRE INC95 citations93
US7068649B2Jun 27, 2006
Extended bandwidth homePNA system compatible with homePNA 2.0
2WIRE INC46 citations92
US6874096B1Mar 29, 2005
Apparatus and method for detecting packet arrival time
2WIRE INC19 citations92
US6542028B1Apr 1, 2003
System and method for efficient demodulation and filtering of a received signal
2WIRE INC19 citations92
US6977958B1Dec 20, 2005
Differentially-driven loop extender
2WIRE INC7 citations71
US7061857B2Jun 13, 2006
System and method for fault isolation for DSL loop extenders
2WIRE INC4 citations63
US7072385B1Jul 4, 2006
Load coil and DSL repeater including same
2WIRE INC5 citations60
US6947529B2Sep 20, 2005
DSL compatible load coil
2WIRE INC6 citations59
US7483528B2Jan 27, 2009
Loop extender with selectable line termination and equalization
2WIRE INC0 citations42
U S ROBOTICS ACCESS CORP
5 patentsUS5705949AJan 6, 1998
Compensation method for I/Q channel imbalance errors
U S ROBOTICS ACCESS CORP290 citations99
US5646983AJul 8, 1997
Host computer digital signal processing system for communicating over voice-grade telephone channels
U S ROBOTICS ACCESS CORP88 citations96
US5912888AJun 15, 1999
Digital network access server
U S ROBOTICS ACCESS CORP109 citations95
US6097794AAug 1, 2000
Host computer digital signal processing system for communicating over voice-grade telephone channels
U S ROBOTICS ACCESS CORP18 citations92
US5892757AApr 6, 1999
Asymmetric duplex modem utilizing narrow band echo cancellation
U S ROBOTICS ACCESS CORP19 citations92
US ROBOTICS INC
3 patentsUS5528595AJun 18, 1996
Modem input/output signal processing techniques
US ROBOTICS INC142 citations95
US5724413AMar 3, 1998
Host computer digital signal processing system for communicating over voice-grade telephone channels
US ROBOTICS INC23 citations92
US5579305ANov 26, 1996
Asymmetric duplex modem utilizing narrow band echo cancellation
US ROBOTICS INC23 citations92