| 摘要 |
PCT No. PCT/KR92/00069 Sec. 371 Date Apr. 5, 1994 Sec. 102(e) Date Apr. 5, 1994 PCT Filed Nov. 30, 1992 PCT Pub. No. WO94/12981 PCT Pub. Date Jun. 9, 1994A head-switching circuit for switching from a first head operating on a first recording medium to a second head operating on a second recording medium so as to read out data written on a recording medium according to a staggered servo mechanism, includes a selector for selecting one of the recording media, a classifier (20, 30, 31, 32, 33 and 34) for classifying the skew time of a recording medium selected by the selector and another recording medium selected by the selector, a sync signal generator (40, 41, 42, 50, 51), (60, 61, 62, 70, 71, 72 and 80) enabled by the output signal of the classifier for generating a sync signal when the skew time to is identical with a predetermined time, thereby generate a sync signal precisely during head-switching in staggered servo mechanism. |
