Granted Patent
Utility
US 5,978,508 · App. 08/933,079
Two-dimensional inverse discrete cosine transformation circuit for MPEG2 video decoder
Inventor:
Eiji Tsuboi
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Sep 18, 1997
Inventor
Eiji Tsuboi
Assignee (at issue)
NEC 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.