Granted Patent
Utility
US 6,091,822 · App. 09/004,600
Method and apparatus for recording scrambled video audio signals and playing back said video signal, descrambled, within a secure environment
Inventors:
Andrew Mellows, John O. Ryan, William J. Wrobleski, Ronald Quan, Gerow D. Brill
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Jan 8, 1998
Inventors
Andrew Mellows
John O. Ryan
William J. Wrobleski
Ronald Quan
Gerow D. Brill
Assignee (at issue)
Macrovision Corporation
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.