Granted Patent
Utility
US 6,426,979 · App. 09/301,848
Adaptation control algorithm for echo cancellation using signal-value based analysis
Inventors:
Xun Yang, Yan Zhou
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: Apr 29, 1999
Inventors
Xun Yang
Yan Zhou
Assignee (at issue)
Legerity, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.