Special reproducing system in an apparatus for reproducing video signals from a rotary recording medium

摘要

A special reproducing system is applied to apparatus for reproducing a video signal from a grooveless rotary recording medium. Video signals are recorded along a spiral track with a plural number of fields recorded on every revolution of the medium. The special reproducing system comprises a reproducing element for tracing the track of the rotary recording medium and picking up the recorded signal, a tracking control mechanism for operating in response to skip pulses applied thereto to cause the reproducing element to shift to an adjacent track turn of the spiral track thereby to undergo skipping, and a skip pulse generating circuit for generating skip pulses with timings corresponding to the vertical blanking period positions of the recorded video signal, the skip pulses being of a number corresponding to an operational mode for carrying out a special reproduction differing from normal reproduction at every rotational period of the rotary recording medium, and supplying the skip pulses to the tracking control mechanism. The reproducing element is caused by the tracking control mechanism responsive to the skip pulses to skip to an adjacent track turn within the vertical blanking period of the recorded video signal.