Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Reexamination Certificate
2007-07-03
2007-07-03
Wellington, Andrea (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
C360S055000
Reexamination Certificate
active
11170500
ABSTRACT:
The present invention provides a magnetic head device for recording magnetic signals simultaneously through a plurality of recording heads into recording tracks laid oblique to a running direction of a magnetic tape, which includes first group to m-th group of multi-heads, each group having “q” recording heads disposed side by side as being shifted in a recording direction into the recording tracks to form (q×m) recording tracks with an identical recording width Tp. Every adjacent groups of the multi-head being disposed as being shifted from each other on the same straight line by a distance D determined by the equation to simultaneously form the recording tracks of first group to m-th group:in-line-formulae description="In-line Formulae" end="lead"?D=Tp×q×(m×n+1)in-line-formulae description="In-line Formulae" end="tail"?where, Tp>0, q and m are integers of 2 or larger, and n is an integer of 0 or lager.
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patent: 6141166 (2000-10-01), Ozue
patent: 6801379 (2004-10-01), Ozue et al.
patent: 7092187 (2006-08-01), Tsuchiya et al.
patent: 2002/0135918 (2002-09-01), Ozue et al.
patent: 2002-216313 (2002-08-01), None
Bell, Boyd & Loyd LLP
Kapadia Varsha A.
Sony Corporation
Wellington Andrea
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