Granted Patent
Utility
US 6,671,409 · App. 09/518,430
Blockiness period detection of DCT-based codecs
Inventors:
Steven D. Maurer, Bozidar Janko
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Mar 3, 2000
Inventors
Steven D. Maurer
Bozidar Janko
Assignee (at issue)
Tektronix, Inc.
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.