Drop-out compensation circuit

Details Drop-out compensation circuit Drop-out compensation circuit

1989-04-05

1991-07-23

Envall, Jr., Roy N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358336, 360 381, H04N 988

Patent

active

050348230

ABSTRACT:
A device for the compensation of a drop-out in a frequency-modulated video signal comprises an FM demodulator (4), a dropout detector (5), an A/D converter (6), and a code-word-insertion circuit (9). The code-word-insertion circuit (9) is constructed to insert a unique code-word instead of and at the location of a sample which is disturbed by a drop-out. After processing of the digitized video signal in a video-signal processing unit (12) the unique code-words are detected in a code-word detector (15) and compensation for these drop-outs is effected in a compensation unit (16).

REFERENCES:
patent: 4467368 (1984-08-01), Horstmann
patent: 4591925 (1986-05-01), Trytko
patent: 4628369 (1986-12-01), Ichinoi et al.
patent: 4689695 (1987-08-01), Urata
patent: 4812925 (1989-03-01), Opelt
patent: 4843485 (1989-06-01), Reitmeier

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