Overview of ARIB Standards (STD-B68)
|STD Number||ARIB STD-B68|
|Standard Name||Time Code Format in the Interface for UHDTV Production Systems|
This standard specifies data structure and multiplexing method for timecode transmission in the interface of studio equipment for the ultra-high definition television (UHDTV) signal.
Data structure is a packet structure of 64 bits which is called time information packet, and time code data is transmitted in progressive scanning system of which video frame frequency is 60Hz or 60/1.001Hz. There are user data words (UDW) in the structure of time information packet, and three kinds of data in UDW: time code data, time information data identification code 1 (DBB1) and time information data identification code 2 (DBB2) are specified.
As for multiplexing method, the multiplexing method for time information packet is provided, and multiplexing in case of transmitting by interface provided in STD-B58 is also specified.
2. Amendment History
|Ver.||Amendment or Enactment Date||Amendment summary|
|2.0||07.27.2017||By expanding the time code format based on SMPTE ST 12-3 that specifies the high frame rate time code, the time code format corresponding to the high frame rate video from 60 Hz to 120 Hz is defined.|