Marked recorded signals

Details Marked recorded signals Marked recorded signals

1989-04-20

1992-01-07

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 60, G11B 2736, G11B 1504

Patent

active

050796488

ABSTRACT:
An apparatus for monitoring the marking of a recorded signal includes a data store containing marking information and a code selector for selecting any one of three orthogonal codes for marking the recorded signal and a demodulator for demodulating the marked signal and comparing this with the orthogonal codes. The demodulated marked signals are then fed to matched filters and accumulators wherein the marking process may be repeated dependent upon the value of the accumulation.

REFERENCES:
patent: 4172963 (1979-10-01), Belcher et al.
patent: 4779265 (1988-10-01), O'Connor et al.
patent: 4876617 (1989-10-01), Best et al.

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