发明名称 TRACKING DEVICE
摘要 PURPOSE:To reduce a crosstalk, by recording the tracking signals of adjacent tracks by time-deviating mutually, and performing tracking by comparing the levels of both signals in which the time deviation is corrected at the time of reproduction. CONSTITUTION:Three tracks N-1, N, and N+1 are provided adjacently on a recording medium 1, and the tracking signal (f) is recorded on an area shown as oblique line in figure, and a video signal V on a vacant part. In other words, no neighboring of the signals (f) occurs between adjacent tracks, and also, the video signal V is arranged between adjacent track parts. A medium 1 is constituted in such way, and a reproducing video signal generated at a head 2 is sent to a video processing circuit passing an HPF3, and the reproducing tracking signal (f), passing through an LPF4, is added on first and second gate circuits 5 and 6. Afterwards, the circuits 5 and 6 are turned OFF by a timing signal from a timing circuit 7, and the head 2 is traveled in the center of the track N whose signal level which coincides with those of the tracks (N-1) and (N+1).
申请公布号 JPS63200372(A) 申请公布日期 1988.08.18
申请号 JP19870032188 申请日期 1987.02.14
申请人 OLYMPUS OPTICAL CO LTD 发明人 IMAMURA TATSUO;YOSHIMORI HIROYUKI;ABE HIROYUKI;WATABE HIROYUKI;FUKUDA JIRO
分类号 G11B21/10;G11B5/58 主分类号 G11B21/10
代理机构 代理人
主权项
地址