Reproducing apparatus and tracking method

Details Reproducing apparatus and tracking method Reproducing apparatus and tracking method

2008-05-06

2008-05-06

Tran, Thai Q. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C386S349000

Reexamination Certificate

active

07369748

ABSTRACT:
A reproducing apparatus comprises detecting means18and19for detecting levels of pilot signals recorded on tracks from reproduced signals reproduced by magnetic heads1A,1B, a calculating means24for calculating a ratio between levels detected by the detecting means18and19with respect to the pilot signals recorded on two tracks at both sides of the track traced by the magnetic heads1A,1B and a judging means25for judging an off-track amount of the magnetic head from the value of the ratio calculated by the calculating means24, wherein tracking can be effected on the magnetic heads1A,1B in response to the off-track amount judged by the judging means25. 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.

REFERENCES:
patent: 4658309 (1987-04-01), Yasuda et al.
patent: 5258879 (1993-11-01), Shimotashiro et al.
patent: 5365232 (1994-11-01), Ido et al.
patent: 5751890 (1998-05-01), Yamasaki et al.

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