Table of Contents

FOREWORD
PREFACE
SECTION ONE - GENERAL
Clause
1 Scope
2 Object
3 Environment and test conditions
SECTION TWO - VIDEOTAPE CASSETTE
4 Mechanical parameters
   4.1 Cassette dimensions
   4.2 Identification of cassettes
   4.3 Tape lengths, thickness and play times
   4.4 Face of magnetic coating
   4.5 Datum planes
   4.6 Window and labels
   4.7 Identification holes
   4.8 Leader/trailer tape
   4.9 Reels
   4.10 Lid
5 Video tape specification
   5.1 Base
   5.2 Width
   5.3 Width fluctuation
   5.4 Reference edge deviation
   5.5 Tape thickness
   5.6 Transmissivity
   5.7 Offset yield strength
   5.8 Magnetic coating
   5.9 Coating coercivity
   5.10 Oxide orientation
SECTION THREE - HELICAL RECORDINGS
6 Tape speed
7 Record location and dimensions
8 Helical track record curvature
   8.1 Tolerance zones, centrelines
9 Relative positions of recorded signals
10 Gap azimuth
   10.1 Cue track, control track, time code track
   10.2 Helical track
SECTION FOUR - PROGRAM TRACK DATA ARRANGEMENT
11 Introduction
12 Labelling convention
13 Sector details
   13.1 Sync block
   13.2 Sync pattern
   13.3 Identification pattern
   13.4 Data field
   13.5 Sector preamble
   13.6 Sector postamble
14 Edit gaps
15 Channel code
16 Magnetization
SECTION FIVE - VIDEO PROCESSING
17 Recorded data
   17.1 Recorded lines
   17.2 Digital active lines
18 Source precoding
19 Sample labelling
20 Intersector distribution
21 Intrasector shuffling
   21.1 Intraline shuffle
22 Outer code error protection
SECTION SIX - AUDIO PROCESSING
23 Introduction
24 Source coding
25 Source processing
   25.1 Introduction
   25.2 Segment
   25.3 Audio data word processing
26 Interface control words
   26.1 Channel use (CHAN) - 4 bits
   26.2 Pre-emphasis (PREF) - 4 bits
   26.3 Audio data word mode (LNGH) - 4 bits
   26.4 Block sync location S MARK 0, S MARK 1-8 bits
27 Processing control words
   27.1 Word count (B.CNT) - 4 bits
   27.2 Overlap edit (E LAP) - 4 bits
   27.3 Sequence (SEQN) - 4 bits
28 User control words (UCW)
29 Outer error protection
30 Inner protection and channel coding
31 Order of transmission to inner coding
32 Sector usage
SECTION SEVEN - CONTROL, CUE AND TIME CODE TRACK
                RECORDING
33 Control track
   33.1 CT signal structure
   33.2 CT magnetic orientation
   33.3 CT flux level
   33.4 Relation CT/helical tracks
34 Cue track
   34.1 Method of recording
   34.2 Flux level
   34.3 Recorded flux characteristic
   34.4 Reproducer flux/frequency response
   34.5 Relative timing
35 Time code track
   35.1 Method of recording
   35.2 Flux level
36 Longitudinal time code recording
   36.1 Structure of the time code signal
   36.2 Recording characteristics
   36.3 Time relationship of time code and digital
        video
   36.4 Longitudinal position of the time code record

Abstract

Applies to magnetic recording of one digital video and four digital audio signals using 19mm tape cassettes. Is valid for TV signals in digital component form, generated according to the rules of the CCIR Recommendations 601 and 656 and for digital audio signals according to IEC 958. Also describes the digital recording of ancillary data and the analogue recording of one cue track and the control track. Defines the electrical and mechanical characteristics of equipment which will provide for the interchangeability of recorded cassettes. The requirements given relate to 525/60 and 625/50 TV systems.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	SC 100B