Noise canceller for use in a magnetic reproducing apparatus

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358328, 358 36, 358167, 358340, 358336, H04N 521

Patent

active

052490645

ABSTRACT:
A magnetic recording/reproducing apparatus, which includes: a reproduced level detector for detecting the level of a reproduced signal and a memory for storing the reproduced level detected by the detector; and when recording a video signal, the signal is recorded and reproduced in advance, and this reproduced level is stored in the memory, so that an amount of emphasis of a detail emphasis circuit in a reproducing system and an amount of equalization of an FM equalizer in the recording system can be controlled in accordance with the stored reproduced level; while when reproducing the video signal, the level of a reproduced FM luminance signal is detected by the reproduced level detector, so that an amount of equalization of an FM equalizer, an amount of cancellation of a line noise canceler, and an amount of cancellation of a noise canceler in a reproducing system can respectively be controlled in accordance with the detected reproduced level; whereby the characteristic of a video tape can be controlled in accordance with the type thereof on an apparatus-wide and integrated basis.

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T. Bannai, et al, "Wide Band Video Signal Recorder Having Level and Linearity Corrector," IEEE Transactions on Consumer Electronics, vol. CE-32, No. 3, pp. 268-273, Aug. 1986.

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