標準號：BS EN 60461-2011
中文標準名稱：時間和控制代碼
英文標準名稱：Time and control code
標準類型：M71
發布日期：2011/7/31 12:00:00
實施日期：2011/7/31 12:00:00
中國標準分類號：M71
國際標準分類號：33.160.40;33.170
引用標準：ITU-R BT.1700-1(2005);SMPTE 170M-2004;SMPTE 258M-1993;SMPTE 262M-1995;ISO/IEC 646-1991;ISO/IEC 2022-1994;SMPTE 309M-1999
適用范圍：This International Standard specifies a digital time and control code for use in television, film,and accompanying audio systems operating at nominal rate of 60, 59,94, 50, 30, 29,97, 25, 24and 23,98 frames per second. This International Standard specifies a time address, binarygroups, and flag bit structure. In addition, the standard specifies a binary group flagassignment, a linear time code transport, and a vertical interval time code transport.This International Standard defines primary data transport structures for linear time code (LTC)and vertical interval time code (VITC). This standard specifies the LTC modulation and timingfor all video formats. This standard also defines the VITC modulation and location for525/59,94 and 625/50 analogue composite and component systems only.NOTE The digital representation of analogue VITC (D-VITC) is specified in SMPTE 266M and is defined for525/59,94 and 625/50 digital component systems only. High definition formats, such as those documented inSMPTE 274M and SMPTE 296M, should use ancillary time code (ATC) as specified in SMPTE 12M-2 (formerlySMPTE RP 188) for transport of time code in the digital video data stream. For future implementations of time codefor digital standard definition formats, the use of ATC rather than D-VITC is encouraged.