Granted Patent
Utility
US 5,852,661 · App. 08/390,320
Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes
Inventor:
Herbert Chen
Patented Case
View Patent ↗
Granted: Dec 22, 1998
Filed: Feb 17, 1995
Inventor
Herbert Chen
Assignee (at issue)
Advanced Micro Devices, 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.