Apparatus for reproducing a signal from a magnetic recording med

Details Apparatus for reproducing a signal from a magnetic recording med Apparatus for reproducing a signal from a magnetic recording med

1997-03-14

1999-05-11

Nguyen, Huy Thanh

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 39, 386104, 360 27, 360 64, H04N5/782

Patent

active

059036990

ABSTRACT:
A signal reproducing apparatus operates on a magnetic tape on which information is recorded according to one of first, second, and third predetermined recording formats. The signal reproducing apparatus includes first and second heads. The first head reproduces a signal from the magnetic tape, and has a first predetermined azimuth angle. The second head reproduces a signal from the magnetic tape, and has a second predetermined azimuth angle different from the first predetermined azimuth angle. A first detector detects a level of the signal reproduced by the first head. First components are separated from the signal reproduced by the second head. The first components have frequencies in a first predetermined band. A second detector detects a level of the first components. Second components are separated from the signal reproduced by the second head. The second components have frequencies in a second predetermined band separate from the first predetermined band. A third detector detects a level of the second components. A decision is made as to which of the first, second, and third predetermined recording formats the signals reproduced by the first and second heads correspond to in response to the levels detected by the first, second, and third detectors.

REFERENCES:
patent: 4656527 (1987-04-01), Uchimi
patent: 5359463 (1994-10-01), Shirochi et al.
patent: 5396372 (1995-03-01), Itoh et al.

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