Magnetic tape recording device which positions the beginning of

Details Magnetic tape recording device which positions the beginning of Magnetic tape recording device which positions the beginning of

1989-10-18

1992-05-26

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 72100, 360 15, G11B 1548

Patent

active

051173174

ABSTRACT:
A magnetic tape recording and playback device records or plays back a signal using a tape, in which a top portion thereof is connected to a leader tape which is non-magnetic substance. The device comprises a switch for setting an initial position, a detector provided on a tape running path for detecting that a tape portion at a point of detection is a boundary between a leader tape and a magnetic substance portion of the tape, a head provided on the tape running path to effect recording or playback on the tape, a mechanical portion for driving the tape to move along the tape running path, and a drive control circuit for controlling driving of the tape so as to drive the mechanical portion to rewind the tape when the switch has been operated and, upon detection of the boundary between the leader tape and the magnetic substance portion by the detector, stop driving of the tape in a state where the head is positioned in the vicinity of a top portion of the magnetic substance portion thereby to set the initial position.

REFERENCES:
patent: 3614453 (1971-10-01), Johnson
patent: 4553180 (1985-11-01), Hasegawa
patent: 4866547 (1989-09-01), Rodal et al.
IBM Technical Disclosure Bulletin vol. 23, No. 11, Apr. 1981, Self-Adjusting End of Tape/Beginning of Tape Optical Transducer Detection Circuit, Richards.

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