Data processor for recording and reading out check data and true

Details Data processor for recording and reading out check data and true Data processor for recording and reading out check data and true

1979-10-05

1982-02-23

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 65, G11B 1504, G11B 1545

Patent

active

043171419

ABSTRACT:
A data recorder for recording data in the form of audio or digital signals into a cassette tape comprises a first circuit for recording check signals and a second circuit for recording true signals. The first circuit allows the check signals to be recorded in a first section of the cassette tape to check the amplitude of a sound volume in which the check signals are sounded. The second circuit enables the true signals to be recorded in a second section of the cassette tape under the condition that the amplitude of the sound volume of the check signals is adequately adjusted. A data reader for reading out the thus recorded data includes a first detection circuit for determining whether the read-out signals have a sufficient level for reading out purposes, an announcing device for announcing the need to adjust a sound volume, and a read-out circuit for reading out true data from the cassette tape.

REFERENCES:
patent: 3660821 (1972-05-01), Weber et al.
patent: 3983577 (1976-09-01), Ito et al.

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