IEC 62156:2001

FOREWORD
1 Scope
2 Normative references
3 Abbreviations
4 Environment and test conditions
   4.1 Environment
   4.2 Reference tape
   4.3 Calibration tape
5 Video tape cassette
   5.1 General specifications
   5.2 Datum plane
   5.3 Window and labels
   5.4 Colour
   5.5 Accidental erasure prevention hole
   5.6 Video tape
   5.7 Leader/trailer tape
   5.8 Reels
   5.9 Lid
6 Helical recording - physical characteristics
   6.1 Tape speed
   6.2 Sectors
   6.3 Record location and dimensions
   6.4 Helical track record tolerance zones
   6.5 Relative positions of recorded information
   6.6 Gap azimuth
   6.7 Transport and scanner
7 Helical recording - electrical characteristics
   7.1 Track contents
   7.2 Signal processing
   7.3 Magnetization
8 Programme track data
   8.1 ITI sector
   8.2 Audio sector
   8.3 Video sector
   8.4 Subcode sector
   8.5 Edit gap
9 Longitudinal tracks
   9.1 Control track
   9.2 Cue track
10 Audio processing
   10.1 Introduction
   10.2 Encoding mode
   10.3 Audio channel allocation
   10.4 Frame structure
   10.5 Audio shuffling
   10.6 Audio auxiliary data (AAUX)
   10.7 Error correction code addition
11 Video processing
   11.1 Introduction
   11.2 Video structure
   11.3 DCT processing
   11.4 Quantization
   11.5 Variable length coding (VLC)
   11.6 The arrangement of a compressed macro block
   11.7 Arrangement of a video segment
   11.8 Relationship between compressed macro block
         and data-sync block
   11.9 Re-ordering of compressed macro blocks
   11.10 Video auxiliary data (VAUX)
   11.11 Error correction code addition
12 Subcode processing
   12.1 Introduction
   12.2 Subcode data
   12.3 Error correction code addition
13 Interface
   13.1 Introduction
   13.2 Data structure
   13.3 Transmission order
   13.4 Frame period
   13.5 Playback speed
Figures
Tables

Specifies the content, format and recording method of the data blocks containing video, audio, and associated data that form the helical records on 12,65 mm tape in cassettes. Also specifies the content, format and recording method of the longitudinal record containing tracking information for the rotating head associated with the helical records, and also cue audio, and control tracks.