APPARAT FOR ATERGIVNING AV EN VIDEOSIGNAL SOM ER UPPTECKNAD PA EN UPPTECKNINGSBERARE

摘要

An apparatus for reproducing a video signal which is recorded on a record carrier, which apparatus includes a dropout detection and compensation device. The carrier which is frequency modulated by the luminance signal is divided by two frequency dividers, the first divider supplying a lower frequency signal whose zero crossings correspond to the zero crossings of the rising edges of the modulated carrier and the second divider supplying a lower frequency signal whose zero crossings correspond to the zero crossings of the falling edges of the modulated carrier. The two lower frequency signals are FM-demodulated and comparison of said demodulated lower frequency signals enables dropout detection. During a dropout compensation is possible by inserting the undisturbed lower frequency signal with the aid of a selection device. A similar detection and substantially the same compensation is also possible for the chrominance information when coded in a specific manner.