This standard specifies the encoding format, modulation method, and recording method and location of the time and control codes used in standard-definition radio and television tape recording. This standard applies to video recording systems (analog tapes, digital tapes) dedicated to radio and television that conform to my country's color TV system.
GB/T 14001-2012 Referenced Document
GB/T 2311-2000 Information technology--Character code structure and extension techniques
GB/T 14001-2012 history
2012GB/T 14001-2012 Time and control code for SDTV video tape recording
1992GB/T 14001-1992 Time and control code for video recording