Apparatus for detection of cue data carried by a recording mediu

Details Apparatus for detection of cue data carried by a recording mediu Apparatus for detection of cue data carried by a recording mediu

1980-07-18

1982-04-13

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360 20, 360 67, G11B 525, G11B 502

Patent

active

043250920

ABSTRACT:
An improved cue signal detector is provided for detecting on a magnetic tape which moves at greatly varying speeds a cue signal having a fixed wavelength longer than the wavelengths of other recorded information signals. The cue signal detector comprises a pick-up magnetic head for sensing a recorded cue signal, an integrator connected so that the signal output of the pick-up head is integrated with respect to time, and an amplitude level sensor for monitoring the integrator output with respect to a reference amplitude and generating a cue output signal indicative of the detection of the cue signal on the tape when the amplitude of the integrator output exceeds a predetermined level. The output of the level sensor is processed by a filter circuit to determine whether the cue signal is valid or was generated by noise.

REFERENCES:
patent: 3308449 (1967-03-01), Uemura
patent: 4149204 (1979-04-01), Marino et al.
patent: 4159493 (1979-06-01), Ohta et al.

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