Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record
Patent
1994-10-11
1998-11-10
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Record transport with head moving during transducing
Tape record
360 15, 36013023, 360 7305, 360 75, 360 70, G11B 5027
Patent
active
058353011
ABSTRACT:
A head drum, as a first embodiment, for scanning a magnetic tape guided at an angle (.theta..sub.D) to the head drum assembly includes 2N number of video heads being divided into a first and a second groups, each group having N video heads being positioned closely adjacent one another at a predetermined space and the N video heads in the first group being positioned symmetrically opposite the N video heads in the second group along the rotating direction of the drum assembly, N being a positive integer. A second embodiment of a head drum for scanning a magnetic tape guided at an angle (.theta..sub.D) to the head drum assembly includes N pairs of video heads thereon, the N pairs of video heads being arranged in such a manner that each pair of video heads is angularly separated from one another by 360.degree./N. The angle (.theta..sub.D) of the first and the second embodiments to the head drum assembly is defined as: ##EQU1## wherein .theta..sub.T is the track angle inclined with respect to a longitudinal direction of the magnetic tape, W is an effective tape width and L is the distance of the tape movement per track.
REFERENCES:
patent: 4167023 (1979-09-01), Bessette
patent: 4517609 (1985-05-01), Yoshihika
patent: 4703370 (1987-10-01), Inoue
patent: 4888653 (1989-12-01), Cullum
patent: 5311375 (1994-05-01), Ikushima
"Design Method for a Tape Scanning System", Design and Estimation of a VTR Tape Scanning System, by N. Katsushi, pp. 11-14, published by Katsushita Electronics, Apr. 1990.
Daewoo Electronics Co. Ltd.
Faber Alan
Psitos Aristotelis M.
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