Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1992-11-06
1994-08-30
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
2423344, 242340, 360 69, G11B 1518
Patent
active
053433394
ABSTRACT:
A tape loading device is for a cassette type magnetic recording/reproducing apparatus in which a tape is drawn out of a cassette for record or reproduction, and includes movable tape guides for defining a path for running of the tape, a pair of reel driving motors which independently drive two reels of the cassette to apply a back tension to the tape, and a control unit. The reel driving motors are activated to apply the same torque to both the reels, before the tape loading operation. In this state, a tape wind diameter ratio and/or an inertia ratio between the reels is computed based on the speeds and directions of rotations of the reels. The control unit selects a control pattern which would effectively suppress rotations of the reels due to inertia, out of a plurality of control patterns, in accordance with the computed value. In tape loading or unloading operation, the control unit controls operation of the movable tape guides and/or the reel driving motors in accordance with the selected pattern. Thus, any undesirable effect of inertia of the cassette reels is avoided, so that tape is loaded or unloaded in a short time without suffering from damage.
REFERENCES:
patent: 4341363 (1982-07-01), Inatome
patent: 4536806 (1985-08-01), Louth
patent: 4631605 (1986-12-01), O'Gwynn
patent: 4649441 (1987-03-01), Louth
patent: 5222684 (1993-06-01), Yoneda et al.
Inagaki Yasuo
Inoue Atsushi
Kaku Nobuyuki
Niguchi Yasuyuki
Sasaki Takashi
Hitachi , Ltd.
Sniezek Andrew L.
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