Standard s conversion where the Line Rate of the output standard is significantly lower that of the input standard, e. g. 1125/59.94 to 525/59.94.
The reproduction of an image in high definition to a standard definition image.
The process of converting the frequency of a signal to a lower frequency. Downconversion is performed at the reception point to permit the recovery of the original signal. See also Upconversion and Frequency Conversion.