Granted Patent
Utility
US 4,500,972 · App. 06/269,015
Apparatus for converting digital chrominance signals of a cartesian color coordinate system into digital color signals and saturation signals of a polar color coordinate system and a transformation circuit
Inventors:
Franz Kuhn, Wilfried Lippek, Klaus Mollgaard, Friedrich Redecker
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jun 5, 1981
Inventors
Franz Kuhn
Wilfried Lippek
Klaus Mollgaard
Friedrich Redecker
Assignee (at issue)
Dr. Ing. Rudolf Hell GmbH
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.