Picture quality improving apparatus capable of reducing deterioration of interpolated signal

DETAILED DESCRIPTION Accordingly, it is an object of this invention to provide a picture quality improving apparatus capable of reducing deterioration of the picture quality caused in interpolation processing.
To achieve this object, a picture quality improving apparatus according to the present invention comprises: multiplexing means for multiplexing first and second digital video signals upon reception thereof and outputting a first multiplex signal containing a noise component; noise reducing means for reducing the noise component from the first multiplex signal from the multiplexing means and outputting a second multiplex signal; motion detecting means for receiving the first multiplex signal from the multiplexing means and detecting a picture movement signal included in the first multiplex signal; and interpolating means for interpolating the second multiplex signal from the noise reducing means in interpolation mode corresponding to the picture movement signal detected by the motion detecting means.