Tracking control device in a magnetic reproducing apparatus with offsetting of a level of only one of two pilot-signal detection signals

摘要

A tracking control device comprises a tape driving device for driving a magnetic tap at a predetermined running speed; and a rotary head carrying a magnetic head, for rotating the magnetic head to trace a plurality of record tracks on a magnetic tape driven by the tape driving device, the magnetic head having two gaps which have different azimuth angles from each other, the respective gaps being adapted to be used to trace every other record track. A signal reproducing circuit is connected to the magnetic head, for reproducing as signal supplied from the magnetic head; and a pilot signal detector is connected to the signal reproducing circuit for detecting pilot signals included in the signal reproduced by the signal reproducing circuit, the pilot signals being recorded in record tracks on both sides of the record track which is traced by one of the gaps of the magnetic head, and for outputting pilot- signal detection signals each representing levels of the detected pilot signals. A level of only one of the pilot-signal detection signals is offset by a predetermined value; and the tape running speed of the magnetic tape is adjusted by controlling the tape driving device such that the offset level of one of the pilot-signal detection signals will coincide with the level of the other of the pilot-signal detection signals, whereby said magnetic head of the rotary head means is allowed to trace the record tracks at a tracing angle which is different by a certain angle from the predetermined lead angle of the record tracks.