negative modulation meaning in Hindi

Examples

1. Both positive and negative modulation of endothelial cell adhesion, motility, and growth have been attributed to TSP1.
2. Impulsive noise in negative modulation systems appears as dark spots that are less visible, but picture synchronization was seriously degraded when using simple synchronization.
3. The introduction of negative modulation in later systems simplified the problem because peak carrier power represented sync pulses ( which were always guaranteed to be present ).
4. Another advantage of negative modulation is that, since the synchronizing pulses represent maximum carrier power, it is relatively easy to arrange the receiver automatic gain control to only operate during sync pulses and thus get a constant amplitude video signal to drive the rest of the TV set.