Nonrecorded section detection in a tape recorder apparatus

Details Nonrecorded section detection in a tape recorder apparatus Nonrecorded section detection in a tape recorder apparatus

1978-03-30

1980-04-15

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

G11B 1552

Patent

active

041986644

ABSTRACT:
A nonrecorded section detection switch is provided through which a power supply voltage is applied to an amplifier associated with a reproduction head at a desired time. A switching transistor is connected to receive the output signal of the amplifier and turns ON only when the amplifier develops the signal. A charge/discharge loop is formed through the base and the emitter of the switching transistor, and a level detector is provided to control a tape feed mechanism in accordance with a charge level of the charge/discharge loop.

REFERENCES:
patent: 3505485 (1970-04-01), Andrews
patent: 3984869 (1976-10-01), Fujii et al.
patent: 4027336 (1977-05-01), Jordan
patent: 4118743 (1978-10-01), Ban et al.

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