Method and apparatus for identifying sound recordings

Details Method and apparatus for identifying sound recordings Method and apparatus for identifying sound recordings

1982-10-25

1985-01-22

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Record copying

360 60, G11B 586, G11B 1504

Patent

active

044955260

ABSTRACT:
In an installation comprising a master assembly for reading the sound information signals and the end-of-program sequence signals recorded on a master tape, and at least one slave assembly to record a second time the read out signals, the slave assembly comprises circuits for detecting and regenerating end-of-sequence signals, which circuits are connected to the output of the said recording amplifier, digital coding circuits by derivation from a pilot frequency for producing a coded auxiliary digital signal, means to modify the digital coding at each new detection of end-of-sequence signals and an adder circuit to add the coded auxiliary digital signal with the sound information signal before re-recording the latter.

REFERENCES:
patent: 4086634 (1978-04-01), Cook

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