Method and apparatus for equalizing FM video signals using varia

Details Method and apparatus for equalizing FM video signals using varia Method and apparatus for equalizing FM video signals using varia

1989-11-15

1992-06-23

McElheny, Jr., Donald D.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 65, 358335, 358177, H04N 591, H04N 552

Patent

active

051248506

ABSTRACT:
An equalization apparatus in which a variable equalizer is used to equalize the frequency response of an FM video signal obtained by frequency-modulating a carrier signal with a video signal in which a reference signal of a constant frequency is inserted during a predetermined interval. The equalization apparatus includes a comparator section for making a comparison in amplitude between first upper and lower sidebands in the FM video signal and a control section for controlling the variable equalizer in accordance with an output of the comparator section.

REFERENCES:
patent: 3643013 (1972-02-01), Lemoine
patent: 4509155 (1985-04-01), Masuda
Patent Abstracts of Japan, vol. 9, No. 148 (P-355)(1871) 22 Jun. 1985, & JP-A-60 025008 (Matsushita Denki Sangyo K.K.) 7 Feb. 1985.

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