Granted Patent
Utility
US 5,488,665 · App. 08/156,495
Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels
Inventors:
James David Johnston, Deepen Sinha
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Nov 23, 1993
Inventors
James David Johnston
Deepen Sinha
Assignee (at issue)
AT&T CORP.
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.