Control or modification of tonal gradation or of extreme levels, e.g. background level

Introduced: January 1995

Last revised: January 2006

Full Title

Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof > Picture signal circuits > Control or modification of tonal gradation or of extreme levels, e.g. background level

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: PICTORIAL COMMUNICATION, e.g. TELEVISION