Videotape time and control codes
ANSI/SMPTE 12M-1986 (amended 1993): American National Standard for television - time and control cycle - video and audio tape for 525 line/60 field systems.
ANSI/SMPTE 230M-1991: V2 in Type L - Electrical Parameters Control Code and Tracking Control.
EBU N12-1994: Time and Control Codes for Television Recording.
IEC 461:1986 (amended 1993) and BS 6865:1987 (amended 1993) British Standards Specification for Time and Control Codes for Videotape Recorders.
SMPTE 228M (Proposed): 19 mm type D-l Cue and Time and Control Code Records.
SMPTE 248M (Proposed): 19 mm type D-2 Cue Record and Time and Control Code Records.
SMPTE 262M: Storage and Transmission of Data in Binary Groups of Time and Control Codes. ...