Video recording apparatus

Dynamic magnetic information storage or retrieval – Manual input recording

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Details

360 24, 360 27, 360 32, 360 33, 360 36, 360 37, H04N 579, H04N 5795

Patent

active

041046838

ABSTRACT:
Apparatus for directly recording television signals on a magnetic medium strips out sync and blanking information. Low frequency components of the television signals are time-compressed, i.e., frequency shifted, and recorded as a substitute for the stripped-out sync and blanking information. Thus, high frequency components of each video line are recorded, followed by that line's low frequency components, thereby facilitating the playback of low frequency information. In a preferred form, the low frequency video information is time-compressed sufficiently to provide time, during the time slot which corresponds to sync and blanking information, for the recording of reference signal information. During playback, the reference signal information is employed to set the gain of the playback circuit.

REFERENCES:
patent: 3335218 (1967-08-01), Johnson
patent: 3392233 (1968-07-01), Houghton
patent: 3504352 (1970-03-01), Stromswold et al.
patent: 3506780 (1970-04-01), Camras
patent: 3723637 (1973-03-01), Fujio et al.
patent: 3723643 (1973-03-01), Suzuki et al.
patent: 3781463 (1973-12-01), VAN DEN Bussche
patent: 3821797 (1974-06-01), Suzuki et al.

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