Inventor
KOO DAVID
CA21 patents
⚠️ This page may combine multiple inventors who share the name “KOO DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PHILIPS CORP
10 patentsUS4665438AMay 12, 1987
Picture-in-picture color television receiver
PHILIPS CORP84 citations94
US5121211AJun 9, 1992
System for echo cancellation comprising an improved ghost cancellation reference signal
PHILIPS CORP39 citations92
US5111298AMay 5, 1992
Method and apparatus for communication channel identification and signal restoration
PHILIPS CORP27 citations92
US5047859ASep 10, 1991
Method and apparatus for communication channel identification and signal restoration
PHILIPS CORP26 citations92
US4791597ADec 13, 1988
Multiplierless FIR digital filter with two to the Nth power coefficients
PHILIPS CORP26 citations91
US5568202AOct 22, 1996
System for echo cancellation comprising an improved ghost cancellation reference signal
PHILIPS CORP14 citations82
US5179444AJan 12, 1993
System for echo cancellation comprising an improved ghost cancellation reference signal
PHILIPS CORP14 citations82
US4782458ANov 1, 1988
Architecture for power of two coefficient FIR filter
PHILIPS CORP20 citations80
US5172232ADec 15, 1992
Method and apparatus for communication channel identification and signal restoration
PHILIPS CORP12 citations73
US5283650AFeb 1, 1994
System for ghost cancellation comprising an improved GCR signal sequence
PHILIPS CORP5 citations62
KONINKL PHILIPS ELECTRONICS NV
4 patentsUS6952238B2Oct 4, 2005
Method and apparatus for echo cancellation in digital ATV systems using an echo cancellation reference signal
KONINKL PHILIPS ELECTRONICS NV14 citations84
US6806915B2Oct 19, 2004
Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal
KONINKL PHILIPS ELECTRONICS NV12 citations73
US7010269B2Mar 7, 2006
Pre-equalizer structure based on PN511 sequence for terrestrial DTV reception
KONINKL PHILIPS ELECTRONICS NV8 citations71
US6898614B2May 24, 2005
Round-off algorithm without bias for 2's complement data
KONINKL PHILIPS ELECTRONICS NV6 citations61
PRATT & WHITNEY CANADA
4 patentsUS11585269B1Feb 21, 2023
Apparatus for removing particulate matter from bleed gas
PRATT & WHITNEY CANADA0 citations58
US11821363B1Nov 21, 2023
Apparatus for removing particulate matter from bleed gas and gas turbine engine including same
PRATT & WHITNEY CANADA0 citations47
US11731778B1Aug 22, 2023
Apparatus for removing particulate matter from bleed gas
PRATT & WHITNEY CANADA0 citations47
US12352209B1Jul 8, 2025
Aircraft engine fluid separation system and method
PRATT & WHITNEY CANADA0 citations45