Granted Patent
Utility
US 6,349,139 · App. 09/180,452
Method and apparatus for minimizing chroma subcarrier instability caused by a video line scrambling system
Inventor:
Ronald Quan
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Nov 6, 1998
Inventor
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.