Patent ID: 7116720

Claim:
An apparatus for correcting picture instabilities in a video signal, having a device for deriving a correction signal in a manner dependent on deviations in successive pictures of the video signal to be corrected, having an actuator, which has an input for receiving the video signal to be corrected, a control input for feeding in the derived correction signal and an output for outputting the corrected video signal, having a filter, which receives, at art input a motion vector signal describing the vector of a motion between successive pictures, which derives a correction signal from the received motion vector signal and outputs it at an output, wherein in that in each case at least one motion vector of the successive pictures is fed to the filter, in that the filter contains a plurality of registers to which at least one motion, vector can be fed and which are assigned a state variable if the respective register content is valid, in that the contents of the registers with a set state variable are accumulated by a new motion vector when the latter arrives, in that the state variable is reset it the state variable was set before the arrival of the new motion vector and the content of the respective register exceeds a predetermined threshold, in that the content of one of the registers with a reset state variable is set to zero and the state variable is set to one, and in that an average value is formed from the contents of the registers with a set state variable, said average value being fed to the actuator with an opposite sign.