Granted Patent
Utility
US 5,239,582 · App. 07/790,733
Ramp generation for preventing transitions with infinite short rise time in a video scrambling system
Inventor:
K. Heinz Griesshaber
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Nov 8, 1991
Inventor
K. Heinz Griesshaber
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.