Magnetic recording apparatus

Details Magnetic recording apparatus Magnetic recording apparatus

H - Electricity

04

N

H04N 5/91 (2006.01) G11B 15/473 (2006.01) H04N 5/78 (2006.01) H04N 9/82 (2006.01) H04N 9/83 (2006.01)

Patent

CA 2060550

A video signal is recorded in successive tracks on a recording medium together with a pilot signal, the latter having a frequency that changes cyclically with a different one of at least four frequencies in successive tracks. A field detector detects sequential fields in the frames of the video signal, and rotation of the usual rotary transducers is servo-controlled in response to the detected sequence of fields and a pulse that is generated as the transducers rotate to represent the rotational phase of those transducers. A pilot signal generator generates the pilot signal with an initial frequency determined by an initial field in the detected field sequence, and with this frequency changing as a function of the detected sequential fields.

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