Magnetic recording/reproducing device

A magnetic recording/reproducing apparatus, in which recording is performed to diagonally form a track along a length of a magnetic tape, a modulated video signal is recorded on the track, the magnetic tape is reproduced to reproduce the track, and a vertical synchronous signal detecting unit is provided for detecting a vertical synchronous signal of a video signal from the reproduction signal, and information is reproduced and recorded by using a recording/reproducing head having a head width larger than a track width of the track, wherein

• the apparatus comprises:
• a tracking control unit for performing tracking so that a center of the recording/reproducing head and a center of the track coincide with each other in a width direction during reproduction;
• a vertical synchronous signal phase target setting unit for detecting a phase difference between a vertical synchronous signal obtained from the track and a switching signal of the recording/reproducing head, and setting a phase advanced by a predetermined amount from a phase of the vertical synchronous signal as a target value of a vertical synchronous signal control phase, while the tracking control unit causes the centers of the recording/reproducing head and the track to substantially coincide with each other in the width direction;
• a vertical synchronous signal control unit for performing tracking so that a phase of the vertical synchronous signal is equal to a phase target value set by the vertical synchronous signal phase target setting unit;
• and
• a switching unit for switching tracking of the track from the tracking control unit to the vertical synchronous signal control unit during pre-roll reproduction of consecutive recording.

A magnetic recording/reproducing apparatus, in which recording is performed to diagonally form a track along a length of a magnetic tape, and a recording/reproducing head having a head width larger than a track width of the track is used to reproduce and record information, wherein

• the apparatus comprises:
• a head output level detecting unit for detecting a head output level obtained when the track is reproduced by the recording/reproducing head;
• a head output level-down detecting unit for detecting a reduction in output of the recording/reproducing head, the output being detected by the head output level detecting unit;
• an offset tracking control unit for changing tracking to an advanced phase until the head output level-down detecting unit detects a reduction in reproduction output of the recording/reproducing head;
• and
• a switching unit for switching tracking of the track from the tracking control unit to the offset tracking control unit during pre-roll reproduction of consecutive recording.