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1. WO1986006863 - EDGE GUIDED MAGNETIC TAPE TRACKING

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Publication Number WO/1986/006863
Publication Date 20.11.1986
International Application No. PCT/US1986/000797
International Filing Date 21.04.1986
IPC
G11B 15/60 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
15Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
60Guiding record carriers
G11B 5/48 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads relative to record carriers
G11B 5/584 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads relative to record carriers
58with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
584for track following on tapes
CPC
G11B 15/602
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
15Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
60Guiding record carrier
602for track selection, acquisition or following
G11B 5/4893
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads ; or head supports; relative to record carriers
488Disposition of heads
4893relative to moving tape
G11B 5/584
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads ; or head supports; relative to record carriers
58with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
584for track following on tapes
Applicants
  • EASTMAN KODAK COMPANY [US]/[US]
Inventors
  • McCLURE, Richard, John
Agents
  • CODY, Robert, F.
Priority Data
730,13803.05.1985US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EDGE GUIDED MAGNETIC TAPE TRACKING
(FR) GUIDAGE DE BANDES MAGNETIQUES GUIDEES PAR LE BORD
Abstract
(EN)
Drawing on the observation that a signal which is magnetically recorded near the edge of a magnetic tape (12) not only projects a magnetic field that is above (and below) the plane of the tape, but also projects a field that extends away from the edge thereof, the invention calls for (tracking-) control of relative head-to-tape positioning in response to the edge-projected field of a pre-recorded edge-positioned tracking control signal (26), whereby the tightness of such control is governed directly by the spacing loss equation.
(FR)
Puisqu'on a pu observer qu'un signal enregistré magnétiquement près du bord d'une bande magnétique (12) projette non seulement un champ magnétique se situant au-dessus (et au-dessous) du plan de la bande mais également un champ qui s'étend en s'éloignant dudit bord, la présente invention propose une commande (de guidage) de la position relative tête-bande en réponse au champ projeté par le bord d'un signal de commande de guidage par le bord (26) d'une bande pré-enregistrée, la précision d'une telle commande étant régie directement par l'équation de la perte d'espace.
Also published as
US4670800
EP0220240
JP1987502785
Latest bibliographic data on file with the International Bureau
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