Granted Patent
Utility
US 6,144,412 · App. 08/950,666
Method and circuit for signal processing of format conversion of picture signal
Inventors:
Yasuhiro Hirano, Kazuo Ishikura, Masato Sugiyama, Mitsuo Nakajima, Shoji Kimura, Toshiyuki Kurita, Tsuguo Itagaki, Haruki Takata
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Oct 15, 1997
Inventors
Yasuhiro Hirano
Kazuo Ishikura
Masato Sugiyama
Mitsuo Nakajima
Shoji Kimura
Toshiyuki Kurita
Tsuguo Itagaki
Haruki Takata
Assignee (at issue)
HITACHI, LTD.
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.