Granted Patent
Utility
US 4,989,090 · App. 07/334,004
Television scan line doubler including temporal median filter
Inventors:
Jack J. Campbell, Yves C. Faroudja, Thomas C. Lyon
Patented Case
View Patent ↗
Granted: Jan 29, 1991
Filed: Apr 5, 1989
Inventors
Jack J. Campbell
Yves C. Faroudja
Thomas C. Lyon
Assignee (at issue)
Yves C. Faroudja
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.