Change of the chrominance phase as function of luminance level. Synonyms: DP

Differential phase is how much the hue changes when the luma level changes (it isn't supposed to). For a video system, the better the differential phase -- that is, the smaller the number specified -- the better the system is at figuring out the correct color.

Variation in the phase of the chrominance subcarrier as the luminance signal on which it rides is varied from blanking to white level.

The variance in phase of the chroma signal measured as a function of the luminance level.

Variation in phase of the color subcarrier of a TV signal as the level of the luminance signal is varied from blanking to white.

A change in the sub-carrier phase of a video signal caused by a change in the luminance level of the signal. The hue of colors in a scene change with the brightness of the scene.

Use of phase, or time, differences instead of amplitude differences to provide a servo error signal.

Unwanted variations in a subcarrier's phase as a result of changes in the chrominance signal's DC level, usually specified between 10% and 90% of full scale. Expressed in degrees, or fractions or a degree.

Unwanted variations in a subcarrier's phase as a result of changes in the chrominance signal's DC level, usually specified in degrees over a frequency range.

Important measurement parameter for composite video signals. Not applicable in Y/C or component signals. Differential phase is the change in hue (phase of the color modulation) for a change in low-frequency luma (brightness) amplitude. Closely approximated by measuring the change in the phase of a sine wave for a change in its DC level.

(DP): A type of distortion in a video signal that causes the color information to be incorrectly interpreted.