Inventor
CHAPPELL DANIEL K
US35 patents
⚠️ This page may combine multiple inventors who share the name “CHAPPELL DANIEL K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VIAVI SOLUTIONS INC
15 patentsUS11239924B2Feb 1, 2022
Per-channel modulation error ratio (MER) calibration and determination on a multi channel receiver
VIAVI SOLUTIONS INC2 citations71
US9350986B2May 24, 2016
Dual-port testing of a cable network
VIAVI SOLUTIONS INC3 citations71
US10728595B2Jul 28, 2020
Upstream sweep test with sweep server signaling
VIAVI SOLUTIONS INC2 citations70
US10694177B2Jun 23, 2020
Distance to fault measurements in cable TV networks
VIAVI SOLUTIONS INC2 citations69
US12218710B2Feb 4, 2025
Per-channel modulation error ratio (MER) calibration and determination on a multi channel receiver
VIAVI SOLUTIONS INC0 citations60
US11677439B2Jun 13, 2023
Method and apparatus providing common path distortion (CPD) detection from a field instrument
VIAVI SOLUTIONS INC0 citations60
US11650266B2May 16, 2023
Systems and methods for detecting leakage in a cable network system
VIAVI SOLUTIONS INC0 citations60
US11218189B1Jan 4, 2022
Method and apparatus providing common path distortion (CPD) detection from a field instrument
VIAVI SOLUTIONS INC0 citations60
US11085973B2Aug 10, 2021
Systems and methods for detecting leakage in a cable network system
VIAVI SOLUTIONS INC0 citations60
US11595710B2Feb 28, 2023
Upstream sweep test with sweep server signaling
VIAVI SOLUTIONS INC0 citations59
US10986331B2Apr 20, 2021
Distance to fault measurements in cable TV networks
VIAVI SOLUTIONS INC0 citations59
US10594364B2Mar 17, 2020
Characterizing ingress noise
VIAVI SOLUTIONS INC0 citations51
US9893764B2Feb 13, 2018
Cable network spectral measurement during upstream packet transmission
VIAVI SOLUTIONS INC0 citations51
US9774847B2Sep 26, 2017
Dual-port testing of a cable network
VIAVI SOLUTIONS INC0 citations51
US12034619B2Jul 9, 2024
Upstream signal leakage detection in high-split cable network
VIAVI SOLUTIONS INC0 citations45
WAVETEK CORP
5 patentsUS6425132B1Jul 23, 2002
Ingress testing of CATV system utilizing remote selection of CATV node
WAVETEK CORP179 citations98
US5867206AFeb 2, 1999
CATV frequency sweep testing using RF transmitter to generate test signals
WAVETEK CORP43 citations94
US5585842ADec 17, 1996
CATV frequency sweep testing using RF transmitter to generate test signals
WAVETEK CORP55 citations94
US6313874B1Nov 6, 2001
Method and apparatus for direct detection of communication system leakage signals
WAVETEK CORP47 citations92
US6041076AMar 21, 2000
Digitally modulated CATV power measurement using undersampling
WAVETEK CORP23 citations91
JDS UNIPHASE CORP
3 patentsUS9634722B2Apr 25, 2017
Cable network spectral measurement during upstream packet transmission
JDS UNIPHASE CORP6 citations82
US9838679B2Dec 5, 2017
Distance to fault measurements in cable TV networks
JDS UNIPHASE CORP12 citations80
US9357163B2May 31, 2016
Characterizing ingress noise
JDS UNIPHASE CORP4 citations72