3689689 is referenced by 11 patents and cites 2 patents.

Circuits for modifying either transmitted or received color signals feature at the transmitter, means for adding selected portions of the blue and red signals to the luminance signal before matrixing it to form the color difference signals. At the receiver, the blue and red color signals are applied to a generated green color difference signal. This enables certain colors to be varied without effecting other colors.

Title
Circuit arrangement for color point adjustment
Application Number
05/016,781
Publication Number
3689689
Application Date
March 5, 1970
Publication Date
September 5, 1972
Inventor
Fritz Weitzsch
Agent
Frank R Trifari
Assignee
US Philips Corporation New York NY
IPC
H04n 09/02
H04N 09/67
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