Granted Patent
Utility
US 5,583,936 · App. 08/062,866
Video copy protection process enhancement to introduce horizontal and vertical picture distortions
Inventors:
Peter Wonfor, Alistair Knox, Jeremy Corcoran, John O. Ryan, Ronald Quan
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: May 17, 1993
Inventors
Peter Wonfor
Alistair Knox
Jeremy Corcoran
John O. Ryan
Ronald Quan
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.