Abstract: A video signal frame search apparatus for selecting a frame from a video signal recorded on a magnetic tape, e.g. for supplying the frame to a video printer, is based on a system controller which controls playback and rewind operations of a VTR during a frame search operation. When a desired frame is displayed during such a frame search operation, actuation of a switch by the user causes a plurality of frames adjcent to and including the desired frame to be stored in a memory and then displayed simultaneously, enabling the user to specify to the system controller the precise position of the desired frame.

Abstract: A light-emitting diode of a photo-coupler is energized and de-energized through a connection to a switching means. Radiation from the light-emitting diode directed toward a photosensitive means of the photocoupler, reduces the resistance of the photosensitive means to rendering a switching transistor conductive. The switching transistor is connected to and controlled by the photosensitive means. When the switching means is open, the switching transistor remains conductive for a predetermined time period due to a transient phenomena of a resistance change of the photosensitive resistor.