Magnetic recording and reproduction device with fast feed/rewind

Details Magnetic recording and reproduction device with fast feed/rewind Magnetic recording and reproduction device with fast feed/rewind

1988-03-09

1990-10-23

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7309, G11B 552, G11B 1518

Patent

active

049658743

ABSTRACT:
A magnetic recording and reproducing device of a type recording and reproducing a signal on a magnetic recording medium such as a tape by using a rotary head and performing a tracking control by detecting crosstalk components of pilot signals on left and right adjacent tracks and comparing these components with each other comprises a pilot signal detection circuit for detecting a pilot signal during fast feeding or rewinding of the magnetic recording medium and speed control circuit for controlling at least one of rotation speed of the rotary head and running speed of the magnetic recording medium so that the pilot signal can be detected substantially at its predetermined frequency during the fast feeding or the rewinding. A speed control servo loop is formed during fast feeding or rewinding so as to detect a pilot signal substantially at its predetermined frequency so that a substantially predetermined relative speed between the magnetic recording medium and the rotary head is maintained and information recorded on the magnetic recording medium can be read in a stable manner.

REFERENCES:
patent: 4426668 (1981-06-01), Itoh
patent: 4630142 (1986-12-01), Tani et al.
patent: 4794473 (1988-12-01), Kawasaki
patent: 4829387 (1989-05-01), Kato

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