Image quality adjusting device which detects the grade of an env

Details Image quality adjusting device which detects the grade of an env Image quality adjusting device which detects the grade of an env

1993-07-22

1996-08-06

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 25, 360 65, 360 67, 348712, H04N 578

Patent

active

055439748

ABSTRACT:
An automatic image quality adjusting device for use in a video signal recording/reproducing apparatus includes a reproducing an head for reproducing FM signal from a magnetic recording medium, an envelop detecting unit for detecting an envelop of the FM signal, and grade detecting unit for detecting a grade of the envelop in accordance with an amplitude of the envelop. A frequency characteristics changing unit is provided for changing the frequency characteristics of a processing signal processed in stages between the reproducing head and a display unit in accordance with to the detected grade. Thus, the image quality is automatically adjusted by changing the frequency characteristics of processing signals in response to the detected grade of the envelope.

REFERENCES:
patent: 4075661 (1978-02-01), Heffron
patent: 4396953 (1983-08-01), Fujita et al.
patent: 4700239 (1987-10-01), Yoshinaka et al.
patent: 4807056 (1989-02-01), Sasaki et al.
patent: 5068718 (1991-11-01), Iwabe et al.
patent: 5191421 (1993-03-01), Hwang
patent: 5196937 (1993-03-01), Kageyama
patent: 5220427 (1993-06-01), Mikami
patent: 5272533 (1993-12-01), Akiyama et al.
patent: 5299002 (1994-03-01), Funayama

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