Method and apparatus for monitoring the reproduction of recorded

Details Method and apparatus for monitoring the reproduction of recorded Method and apparatus for monitoring the reproduction of recorded

1980-06-16

1982-06-01

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording or reproducing an information signal and a control...

360 18, G11B 502

Patent

active

043331130

ABSTRACT:
The present invention relates to a method and device for associating auxiliary information with principal information, and to a device for monitoring the reproduction of principal information recorded on a track, whereby the auxiliary information is coded in an auxiliary signal of limited frequency and superposed on the principal signal, to be recorded in said track. The device comprises a detection circuit connected at the output of the reader head to detect an auxiliary signal associated with the principal information and occupying a limited range of frequencies and a recording device for recording the auxiliary information. The invention is more particularly applied to the monitoring of the public reproduction of recordings.

REFERENCES:
patent: 2807797 (1957-09-01), Shoemaker
patent: 3171902 (1965-03-01), Jones et al.
patent: 3188615 (1965-06-01), Wilcox, Jr.
patent: 4086634 (1978-04-01), Cook
patent: 4188646 (1980-02-01), Sordello et al.

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