標準號：IEC 62447-1-2007
中文標準名稱：用6.35mm磁帶的螺旋掃描壓縮數字視頻盒式錄象帶系統.格式D-12.第1部分:磁帶錄像機(VTR)規范
英文標準名稱：Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape - Format D-12 - Part 1: VTR specifications
標準類型：M73
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：M73
國際標準分類號：33.160.40
適用范圍：This part of IEC 62447 specifies the content, format, and recording method of the data blockscontaining video, audio, and associated data which form the helical records on 6,35-mm tapein cassettes as specified in SMPTE 307M.In addition, this standard specifies the content, format, and recording method for longitudinalcue and control tracks.One compressed video channel, eight independent audio channels and subcode data arerecorded on tape in the digital form. Each of these channels is capable of independent editing.On the following digital video formats, the helical recordings are synchronized to:– 1080 line/59,94 Hz field frequency;– 1080 line/50 Hz field frequency;– 720 line/59,94 Hz frame frequency.These are hereafter referred to as the 1080/60i, 1080/50i,and 720/60p systems, respectively.Similarly, in this standard, the 60 Hz system nomenclature refers to both 1080/60i and720/60p systems, whereas, the 50 Hz system refers only to the 1080/50i system.Nomenclature 1080 line system refers to both 1080/60i and 1080/50i systems, while the 720line system refers only to the 720/60p system.The recorded digital video signal shall be compressed according to the DV-based 100 Mb/sspecification.The recorded digital video signal, eight audio channels and subcode data shall be defined bythe data structure according to the DV-based 100 Mb/s specification.