This Technical Specification specifies the relationship between the reference signal and Ancillary Time Code (ATC) for use in professional storage equipment operating at 50 framesper- second or 59@94 frames-per-second and handling progressive video signal under the system operation to maintain the frame pair which is composed of two frames.
TS 62644-2012 history
2012TS 62644-2012 Professional video storage equipment – Guideline of time code transmission (Edition 1.0)