Method for recording information signal and control signal

G - Physics – 11 – B

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352/20, 352/31.2

G11B 15/02 (2006.01) G11B 5/48 (2006.01) G11B 23/36 (2006.01) G11B 27/32 (2006.01)

Patent

CA 1152211

SO885 METHOD FOR RECORDING INFORMATION SIGNAL AND CONTROL SIGNAL ABSTRACT OF THE DISCLOSURE A first main information signal is recorded in a first track extending longitudinally along one side of a length of magnetic tape and a corresponding first secondary, or control, signal is recorded in a narrow parallel track spaced from the first main track. A second main signal is recorded in a third track within the other half of the tape, and a corresponding second secondary, or control, signal is re- corded between the first secondary signal and the first main signal, whereby the two main signals and the two secondary signals are interleaved with each other. The first and second main tracks are equal in width, and the first and second secondary tracks are also equal in width but are much narrower than the first and second main tracks. If desired, the first and second main tracks can each be divided into first and second sub-main tracks to permit two channel record- ing with a control track in each direction but with each con- trol, or secondary, track being separated from its own nearest subtrack by a distance equal to the width of the other second- ary track plus two guardbands, one on each side of the other secondary track.

269560

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