Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1980-06-05
1982-08-24
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 962, 242199, G11B 1529, G11B 554
Patent
active
043464157
ABSTRACT:
A cassette tape recorder used with a tape cassette loaded therein comprises a pair of capstans, a motor, a power transmission mechanism, a first and a second magnetic head assembly, a moving mechanism and a magnetic head assembly operation switching circuit. The motor rotates selectively in one or the other direction at the same constant speed and with the same characteristics. The transmission mechanism is coupled to the capstans and to the motor for transmitting the rotation of the motor to the capstans to cause simultaneous rotation of the capstans in one or the other direction at the same constant speed. The first and second assemblies move between a first position in contact with the tape in the loaded tape cassette and a second position spaced apart from the tape. In the first position, the first assembly can record magnetic signals in some track of the tape driven in one direction or reproduce magnetic signals from the track, and the second assembly can record magnetic signals in other track of the tape driven in the other direction or reproduce magnetic signals from the track. The moving mechanism moves the two assemblies simultaneously and in the same direction. The circuit electrically selects and renders operative the first assembly when the tape is driven in one direction and selects and renders operative the second assembly when the tape is driven in the other direction.
REFERENCES:
patent: 3869723 (1975-03-01), Yoshida
patent: 3881187 (1975-04-01), Nakamichi
patent: 3936877 (1976-02-01), Maruyama et al.
patent: 4046334 (1977-09-01), Kato et al.
patent: 4159492 (1979-06-01), Ban et al.
Osada Hazime
Osanai Akira
Tomabechi Hideo
Olympus Optical Co,. Ltd.
Wolff John H.
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