Apparatus for reproducing magnetically recorded signals with amp

Details Apparatus for reproducing magnetically recorded signals with amp Apparatus for reproducing magnetically recorded signals with amp

1989-11-29

1992-12-08

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 22, 360 67, 358315, 358335, H04N 578

Patent

active

051702967

ABSTRACT:
Data signals recorded in oblique tracks on a magnetic tape, after they are picked up, preamplified and prefiltered, are rectified and converted to digital values representative of amplitude in respective segments distributed over track lengths. For each segment position in a track, the values are averaged and inverted by a ROM and stored in a RAM at track segment addresses. The values thus stored are converted into analog form and then used as multipliers in a multiplication stage following the preamplification and prefiltering. The output of the multiplier can readily be shaped into unambiguous data signals for further processing.

REFERENCES:
patent: 4495529 (1985-01-01), Gustafson
patent: 4498111 (1985-02-01), Rijckaert et al.
patent: 4517612 (1985-05-01), Rijckaert et al.
patent: 4991034 (1991-02-01), Sato
patent: 5003413 (1991-03-01), Miyazaki
"The 4:2:2 Component Digital VTR", by T. Eguchi et al, International Broadcast Engineer, Sep. 1986, pp. 38-42.

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