An apparatus for compensating a deviation from a time base in a composite video signal

THE INVENTION CONCERNS A DEVICE FOR COMPENSATING DEVIATIONS SIGNAL COMPOSITE VIDEO IN RELATION TO THE TIME BASE, BASED DETECTION OF PHASE DEVIATIONS RESPECTIVELY COMPONENTS HORIZONTAL TIMING AND CHROMA REFERENCE OF THE SALVE VIDEO SIGNAL. DEVICE INCLUDES CIRCUIT ADDER 24 TO ADD A SIGNAL REPRESENTATIVE OF THE DIVERSION OF PHASE COMPONENT SYNC HORIZONTAL AND COMPONENT LOW FREQUENCY ISSUED BY COMPARISON PHASE 4 SENSING THE DEVIATIONS PHASE OF REFERENCE SALVE COMPONENT. SIGNAL ISSUED BY THE CIRCUIT ADDER 24 SERVES TO MANAGE THE VALUE OF DELAYS CAUSED BY DELAY LINE VARIABLE 1 IS CROSSING BY SIGNAL VIDEO A. AN OUTPUT SIGNAL PHASE COMPARATOR 4 ORDER BY MODULATION PHASE MODULATOR 12 RECEIVES VIDEO SIGNAL OF ISSUED BY THE DELAY LINE THAT 1. SIGNALS REFERENCE TO FIXED RATE, WHICH MAY BE ISSUED BY OSCILLATOR SINGLE sERVE TO COMPARE THE PHASES OF TIMING COMPONENTS AND REFERENCE SALVE, NOT rEQUIRE A CIRCUIT PHASE LOCK.