BS EN 60461-2011 时间和控制代码

标准号：BS EN 60461-2011
中文标准名称：时间和控制代码
英文标准名称：Time and control code
标准类型：M71
发布日期：2011/7/31 12:00:00
实施日期：2011/7/31 12:00:00
中国标准分类号：M71
国际标准分类号：33.160.40;33.170
引用标准：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
适用范围：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.