Tape recorder

Details Tape recorder Tape recorder

1978-07-25

1981-06-16

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 66, 360 68, G11B 545, G11B 502

Patent

active

042741165

ABSTRACT:
A tape recorder having a tape speed changing mechanism comprises a magnetic recording and reproducing head, an oscillation circuit connected to the head, an equalizing circuit connected to the oscillation circuit, means for changing an AC bias in response to a tape speed in accordance with a reference voltage which is switched by a speed changing switch of a motor and means for changing a circuit constant of the equalization circuit by a switch which is interlocked with the speed changing switch.

REFERENCES:
patent: 3465321 (1969-09-01), Reisfeld
patent: 3798673 (1974-03-01), Koinuma
patent: 4011585 (1977-03-01), Sunaga
patent: 4038692 (1977-07-01), Umeda et al.

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