| 摘要 |
An apparatus for reproducing video signals recorded in successive parallel tracks extending obliquely on a record tape, which apparatus includes a rotary head repeatedly scanning across the tape generally in a direction along the tracks for reproducing the signals recorded therein while the tape is advanced longitudinally at a selected reproducing speed which is any arbitrary ratio n of a normal reproducing speed for achieving various reproducing modes, and a transducer deflecting device responsive to a drive voltage for deflecting the head in a direction transverse to said direction along the tracks; a tracking control system is provided with a circuit for determining the value of said ratio n and for extracting, from said value of the ratio n, values m and l of an integer and a fraction, respectively, which aggregate said ratio n; a circuit for forming relatively large and small head jump voltages which respectively correspond to said value m and a value (m-1); a discriminating circuit for determining whether a reproduced phase of the output of said head in correspondence to a specific position along a track is in leading or lagging relation to a reference phase determined on the basis of said value l; and a selector responsive to the output of said discriminating circuit for selecting one of said large and small head jump voltages to be included, at the end of each said scanning, in said drive voltage applied to said transducer deflecting device for determining the next one of said tracks to be scanned.
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