Tracking control apparatus for use in apparatus for reproducing video signals from a rotary recording medium

摘要

A tracking control apparatus is employed in apparatus for reproducing video signals from a rotary recording medium. A reproducing transducer is used for reproducing recorded signals in which a main information signal has been recorded in a plurality of adjacent tracks and at least one reference signal has been recorded at an intermediate position between the longitudinal center lines of the adjacent tracks. The tracking control apparatus positions the reproducing transducer to follow a correct tracking along the main information signal track. The reference signal is separated from the signal reproduced by the reproducing transducer. A control signal is produced in response to the separated reference signal for application to the tracking control means. An automatic gain control operation fixes the level of the separated reference signal at a stage prior to the stage where the control signal is produced.