Inventor
BLACKWELL STEVEN R
US27 patents
⚠️ This page may combine multiple inventors who share the name “BLACKWELL STEVEN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ADTRAN INC
8 patentsUS6259680B1Jul 10, 2001
Method and apparatus for echo cancellation
ADTRAN INC66 citations96
US6680978B1Jan 20, 2004
Method and apparatus for nonlinear filtering and controlling the peak-to-average ratio
ADTRAN INC25 citations91
US6876696B1Apr 5, 2005
Timing device and method using a timing equalizer filter for a digital communications systems
ADTRAN INC22 citations90
US6975676B1Dec 13, 2005
Timing loop and method filter for a digital communications system
ADTRAN INC12 citations82
US6597479B1Jul 22, 2003
Fiber quadrupler device method for providing full duplex communications to a synchronous optical network over a single optical fiber
ADTRAN INC16 citations81
US6631178B1Oct 7, 2003
System and method for transmitting data over loaded and unloaded twisted pairs
ADTRAN INC7 citations73
US6438156B1Aug 20, 2002
Stepwise adaptive finite impulse response filter for spread spectrum radio
ADTRAN INC8 citations71
US6940830B2Sep 6, 2005
Method and apparatus for echo cancellation
ADTRAN INC2 citations63
MOTOROLA INC
8 patentsUS5434884AJul 18, 1995
Apparatus and method for equalizing for amplitude jitter
MOTOROLA INC43 citations92
US5671251ASep 23, 1997
Apparatus and method for a data communications device to selectively operate as an analog modem, as a digital modem, and as a terminal adapter
MOTOROLA INC74 citations90
US5598401AJan 28, 1997
Apparatus and method for a digital data communications device to operate in an analog mode
MOTOROLA INC87 citations89
US4965641AOct 23, 1990
Processor modem
MOTOROLA INC66 citations88
US5717692AFeb 10, 1998
Apparatus and method for generalized digital network signaling
MOTOROLA INC10 citations74
US5805925ASep 8, 1998
Apparatus and method for controlling and varying multiple data rates among multiple communications devices in a communications system
MOTOROLA INC8 citations71
US5661726AAug 26, 1997
Advanced communication system architecture
MOTOROLA INC7 citations68
US5751974AMay 12, 1998
Contention resolution for a shared access bus
MOTOROLA INC2 citations56
UNIVERSAL DATA SYSTEMS INC
4 patentsUS5490169AFeb 6, 1996
Decision feedback equalizer method and apparatus
UNIVERSAL DATA SYSTEMS INC58 citations96
US5280473AJan 18, 1994
Modem with echo cancellation
UNIVERSAL DATA SYSTEMS INC16 citations73
US4969144ANov 6, 1990
Adaptive passband echo canceller
UNIVERSAL DATA SYSTEMS INC16 citations71
US5365545ANov 15, 1994
MODEM-channel bank converter
UNIVERSAL DATA SYSTEMS INC17 citations67