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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hausdorfer; Michael
Address:
Muhltal, DE
No. of patents:
4
Patents:












Patent Number Title Of Patent Date Issued
4947240 Method and circuit apparatus for combining two television signals August 7, 1990
A decision signal for switching or fading between foreground and background television signals in accordance with the chroma-key method is subjected to vertical scan delay filtering for line signal averaging in television signals to avoid disturbance of the decision signal by results of
4496966 Method for mixing two color television signals January 29, 1985
The invention concerns a method and apparatus for mixing a foreground signal and a background signal under the control of a switching signal which is derived as a function of the color of the foreground signal. In response to the switching signal selected parts of the foreground signal
4459552 Low-noise video preamplifier July 10, 1984
For reduction of the relative noise amplitude a modulator or chopper stage is provided in front of the input of a video preamplifier and at the preamplifier output balanced demodulators are provided with a subtraction circuit combining their outputs. Preferably the carrier wave used for
4374396 Chrominance sub-carrier modifier for PAL-color television signals February 15, 1983
The present invention relates to a chrominance sub-carrier modifier for PAL-color television signals, particularly for signals from a video storage medium operating in a still picture mode.










 
 
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