ABSTRACT
The methods use signals pre-corrected for the assumed gamma of the crt display. Thus, the gamma-corrected colour separation signals are denoted R0, G0 and B0, with the prime (0) signifying that pre-correction has been applied. PAL and SECAM systems are generally matched to a display gamma of 2.8, while a gamma of 2.2 is assumed for the NTSC system. The 4:2:2 digital components system uses signals appropriate for the associated composite colour standard, hence generally 2.2 for the 525-line, 60 fields/second scanning standard and 2.8 for the 625-line, 50 fields/second standard.
