发明名称 Reproducing apparatus and tracking method
摘要 A reproducing apparatus comprises detecting means 18 and 19 for detecting levels of pilot signals recorded on tracks from reproduced signals reproduced by magnetic heads 1 A, 1 B, a calculating means 24 for calculating a ratio between levels detected by the detecting means 18 and 19 with respect to the pilot signals recorded on two tracks at both sides of the track traced by the magnetic heads 1 A, 1 B and a judging means 25 for judging an off-track amount of the magnetic head from the value of the ratio calculated by the calculating means 24 , wherein tracking can be effected on the magnetic heads 1 A, 1 B in response to the off-track amount judged by the judging means 25 . In a reproducing apparatus like a VCR (video cassette recorder) in which a magnetic head traces tracks on a tape-like recording medium, tracking can be effected on the magnetic head quickly in a short period of time.
申请公布号 US7369748(B2) 申请公布日期 2008.05.06
申请号 US20040890600 申请日期 2004.07.14
申请人 SONY CORPORATION 发明人 MURAYAMA TOSHIYUKI
分类号 G11B15/467;H04N5/91;H04N5/7826 主分类号 G11B15/467
代理机构 代理人
主权项
地址