High speed reproduction method and apparatus

Details High speed reproduction method and apparatus High speed reproduction method and apparatus

1985-12-26

1987-04-07

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 103, 360 70, G11B 5008, G11B 1544

Patent

active

046565370

ABSTRACT:
Signals are recorded on a magnetic tape in the standard or long time recording mode. A capstan drive system has a plurality of control elements and controls the reproduction drive state of the tape in accordance with a rotation detection signal of a capstan motor and a signal reproduced from a control track of the tape. A disk control system has a plurality of control elements and controls the reproduction state of the tape by a rotary head in accordance with rotation detection signals from a disk motor and a disk. A high speed reproduction mode specifying unit specifies the first or second high speed reproduction mode for reproduction at a speed Ns (Ns is a positive integer of 2 or more) or Ns.N (N is a ratio of the tape speeds in the standard and long time recording modes) times the tape speed in the recording mode. A recording mode detection unit detects if the tape is recorded in the standard or long time recording mode. In response to the detection results of the recording mode detection unit and the specifying of the high speed reproduction mode specifying unit, a high speed reproduction control unit supplies a predetermined control signal to the capstan and disk control systems. The predetermined control signal includes a control signal for commonly controlling a predetermined control element among the plurality of control elements in accordance with the first or second high speed reproduction mode.

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