that the following user requirements should govern the specification design and testing of systems for the secondary distribution and emission of Y, CB, CR-based SDTV, HDTV and hierarchical television signals.
ITU-R BT.1122-1-1995 history
2011ITU-R BT.1122-2011 User requirements for codecs for emission and secondary distribution systems for SDTV and HDTV
1995ITU-R BT.1122-1-1995 User Requirements for Emission and Secondary Distribution Systems for SDTV, HDTV and Hierarchical Coding Schemes
ITU-R BT.1122-1-1995 User Requirements for Emission and Secondary Distribution Systems for SDTV, HDTV and Hierarchical Coding Schemes was changed to ITU-R BT.1122-2011 User requirements for codecs for emission and secondary distribution systems for SDTV and HDTV.