Television, Digital (for Studios)
Television, Digital (for Studios) – An extensive family of compatible digital coding standards for studio use with current television systems is defined by CCIR Red 601-2, equally applicable to component encoded 525/60 Hz and 625/50 Hz systems. The member of the family to be used for the standard digital interface between main digital studio equipment and for international program exchange (i.e., for the interface with video recording equipment and for the interface with the transmission system) should be that in which the luminance and color-difference sampling frequencies are related in the ratio 4:2:2. Specifications include: Coded Signals: luminance (Y) plus two color-difference signals (CR and CB), Sampling Frequency: luminance 13.5 MHz, color-difference 6.75 MHz (for each of the two signals), Samples (8-bit) per Digital Active Line: luminance 720, color-difference 360 (for each of CR and CB). Other more detailed specification details are included in CCIR Rec 601-2. Compressed and expanded derivations (4:1:1 and 4:4:4 specifically) are postulated variants with minimum or maximum color information.
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