Abstract: A video signal processing circuit particularly suited for eliminating undesirable picture vibration in the stop-motion, or slow-motion mode of a video reproducing apparatus includes a source of a video signal, a delay line for delaying the video signal one line interval and thereby providing a delayed version of the video signal, a switching circuit connected with the source of the video signal and with the delay line for alternately applying the video signal and the delay version thereof to an output, and a control circuit connected to the switching circuit for causing the switching circuit to switch over at a sampling rate which is sufficient to sample the video signal a plurality of times during each line interval.

Abstract: A tuning apparatus includes a dial plate marked with broadcast frequencies thereon, a guide shaft provided in parallel with the dial plate, a substrate having a resistive layer thereon, the resistive layer having varying resistance values distributed therealong which correspond to the broadcast frequencies on the dial plate, the resistive layer being supplied with a DC voltage at opposite ends thereof, a plurality of markers, each slidably disposed with respect to the dial plate to indicate a predetermined broadcast frequency, and each having a first engaging portion and a first electrically conductive slide element for slidably contacting the resistive layer to detect a predetermined DC voltage in response to the location of the markers, a mounting member slidably disposed on the guide shaft in parallel with the dial plate, and including a display member extending therefrom toward the dial plate to indicate a manually selected broadcast frequency, a second electrically conductive slide element for slidably c