Digital cassette tape reproducing device including novel drive c

Details Digital cassette tape reproducing device including novel drive c Digital cassette tape reproducing device including novel drive c

1992-10-14

1994-05-03

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 61, 381107, G11B 502, G11B 1512, H03G 500

Patent

active

053092970

ABSTRACT:
A power amplifier of a digital cassette tape reproducing device is set to a value suitable to amplify an amplitude level of an audio signal from an analog signal reproducing system thereof and, when a digital signal reproducing system is selected, an audio signal therefrom is supplied to the power amplifier circuit without attenuation while increasing an amount of negative feedback of the power amplifier circuit, hence reducing amplification thereof to match an output level of the power amplifier circuit with that of the analog signal reproducing system to thereby improve S/N ratio and maintain high tone quality of the digital source.

REFERENCES:
patent: 4223273 (1980-09-01), Yokogama
patent: 4363001 (1982-12-01), Suzuki et al.
patent: 4773096 (1988-09-01), Kirn
patent: 5218643 (1993-06-01), Nagashima

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