METHOD AND APPARATUS FOR DETECTING TRACK JUMPING POINT IN MAGNETIC RECORDING AND REPRODUCING SYSTEM

摘要

In a helical scan type VTR provided with at least two magnetic heads (A, B) having different azimuth angles, a pilot signal including four different frequencies f1, f2, f3, and f4 are recorded in multiple on record tracks (Ai, Bi) in a predetermined sequence upon recording. The pilot frequency signals sequentially read out in special reproduction operations are so processed that track jumping points (8b) are detected at which the magnetic head is shifted to an immediately adjacent track or a next adjacent track located by one track away.