Chroma

Color information of a signal, related to the tone and saturation but not with the brightness or luminance of the signal. The black, gray and white have no chrominance, but any colored signal has both chrominance and luminance. A video picture can be seen to be made up of two elements, the chroma made up of colour information and the luminance made up of colour intesity.

Chroma Corrector (chroma meter, widely used in the AV industry, and highly portable) is to correct problems with the chroma subsection of a video signal such as hue, saturation, noise (Chroma noise) and balance which is caused by a weak video signal or excessive colour information, causing over saturation.

Chroma & Luma Transition Enhancement –

Color video signals such as NTSC, PAL or SECAM types all have luminance (luma) and chrominance (chroma) components. As the chroma signal bandwidth is usually narrower than luma signal bandwidth, color edges changes occur much slower than luma edges changes. In other words, a chroma signal transition occurs fairly slower than a luma signal transition. Consequently, chroma signal edges/transitions usually appear degraded. With Chroma & Luma Transition Enhancement, the SP830 sharpen the chroma signal transitions to give you razor-sharp video signals with no distracting picture blur.