| 摘要 |
An apparatus for recording an electric signal (A) on a magnetic record carrier (1) includes at least one pair of write heads (K1, K2) having a mechanically rigid coupling to each other and arranged on a head drum (40). The record carrier (1) is wrapped around the head drum through a wrapping angle alpha . The pair of heads (K1, K2) writes pairs of tracks (T1, T2; T3, T4; . . . ) on the record carrier. The apparatus further includes a signal separator (4) for dividing the electric signal into consecutive blocks, after which the signal blocks having odd sequence number (B1, B3, . . . ) are applied to a first output (5) and the signal blocks having even sequence number (B2, B4 . . . ) are applied to a second output (6). In a time-base correction circuit (7) the signal blocks (A1, A2) are time expanded or compressed. alpha Differs from 180 DEG . Signal blocks having odd sequence numbers are delayed in time relative to signal blocks having even sequence numbers (16). Subsequently, the signal blocks thus processed are recorded. Time compression or expansion is effected by a factor of alpha *n/(180*(M+1), where n is the number of head pairs and M is the number of times within a specific time interval that a head pair which comes in contact with a record carrier during said time interval does not record a signal in the record carrier, this time interval being defined by those instants at which two consecutive track pairs are recorded by one or two head pairs.
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