Dynamic magnetic information storage or retrieval – Recording or reproducing plural information signals on the...
Patent
1986-01-03
1987-02-10
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
Recording or reproducing plural information signals on the...
360 21, 360 48, 360 55, 358340, G11B 500
Patent
active
046427058
ABSTRACT:
A system and method for effecting high density magnetic recordings on magnetic record members such as tape, cards, discs and drums coated with magnetic recoding material. A plurality of different recordings may be provided as overlapping domains or arrays of domains along a single select magnetic record track, thus doubling or additionally multiplying the total amount of information which may be recorded along each record track of a multiple track record member. In one form, one or more magnetic transducers mounted on a common support, may be pivotally driven to variably align their pole pieces and recording or reproduction gaps with a select record track of a record member to provide respective recordings, the domains of each of which are differently aligned from the domains of the others, permitting such different recordings to overlap along the same length of the same track and to be discretely detected by suitably aligned pickups. In another form, a plurality of differently aligned magnetic transducers are fixedly supported on a common substrate or head, each having a respective recording and/or reproduction gap which is angulated or azimuthed differently than the others and is located to scan the same record track of a magnetic record member for performing overlapping recordings and/or reproducing respective of such overlapping recordings from the same track. In a third form, two or more magnetic transducers are staggered but operable to transduce with respect to substantially the same record track.
REFERENCES:
patent: 4101947 (1978-07-01), Lambeth
patent: 4131912 (1978-12-01), Hirai
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