Write current control circuit for audio recording

Details Write current control circuit for audio recording Write current control circuit for audio recording

1993-12-10

1996-03-05

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358343, 358310, 360 191, H04N 5782

Patent

active

054972426

ABSTRACT:
A write control circuit for audio signals in a video tape recorder having an audio signal processor for signal processing in order to record a received audio signal and a video signal processor for signal processing in order to record a received video signal includes a mode setting device for setting an exclusive audio recording mode, under the control of a user, and a bias control circuit for adjusting an audio recording signal output from the audio signal processor to be at it's optimum level when recording according to the characteristic of a recording head in the exclusive audio recording mode. The write control circuit improves the signal-to-noise ratio during the exclusive audio recording mode of operation by muting and recording an applied video signal while using the optimum bias current for a recording head.

REFERENCES:
patent: 3571494 (1971-03-01), Law
patent: 4613912 (1986-09-01), Shibata et al.
patent: 4679097 (1989-07-01), Tomita
patent: 5053890 (1991-10-01), Namiki
patent: 5063452 (1991-11-01), Higurashi
patent: 5148329 (1992-09-01), Yamauchi et al.
patent: 5396372 (1995-03-01), Itoh et al.

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