Granted Patent
Utility
US 5,617,475 · App. 08/342,301
Scrambling and descrambling of video signals using horizontal line combinations
Inventor:
Daniel Marz
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Nov 18, 1994
Inventor
Daniel Marz
Assignee (at issue)
General Instrument Corporation, G.I. Communications Division
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.