RECORDING - HELICAL-SCAN DIGITAL VIDEO CASSETTE RECORDING SYSTEM USING 6,35 MM MAGNETIC TAPE FOR CONSUMER USE (525-60, 625-50, 1125-60 AND 1250-50 SYSTEMS) - PART 3: HD FORMAT FOR 1125-60 AND 1250-50 SYSTEMS
International Electrotechnical Committee
Foreword
1 General
1.1 Scope
1.2 Normative References
1.3 Definitions, Symbols and Abbreviations
1.4 Environment and Test Conditions
1.5 Reference Tape
1.6 Calibration Tape
2 Helical Recordings
2.1 Tape Speed
2.2 Record Location and Dimensions
3 Programme Track Data Arrangement
3.1 Introduction
3.2 Labelling Convention
3.3 Audio Sector
3.4 Video Sector
3.5 Subcode Sector
4 Audio Interface
5 Video Interface
6 Audio Signal Processing
6.1 Introduction
6.2 Error Correction Code
6.3 Randomization Pattern
6.4 Audio Encoding
6.5 Audio Channel Allocation
6.6 Frame Structure
6.7 Shuffling Method
6.8 Audio Auxiliary Data (AAUX)
6.9 Invalid Recording
7 Video Signal Processing
7.1 Introduction
7.2 Error Correction Code
7.3 Randomization Pattern
7.4 Video Structure
7.5 DCT Processing
7.6 Quantization
7.7 Variable Length Coding (VLC)
7.8 Arrangement of a Compressed Macro Block
7.9 Arrangement of a Video Segment
7.10 Data-Sync Block and Compressed Macro Block
7.11 Video Auxiliary Data (VAUX)
7.12 Invalid Recording
8 Subcode Signal Processing
8.1 The Recording Periods of TAG ID
8.2 The Writing Method of the Optional Area
8.3 The Rewriting Periods of TAD ID
9 System Data
9.1 AAUX
9.2 VAUX
9.3 Subcode
9.4 MIC
10 Data Structure for Digital Interface
10.1 Introduction
10.2 Data Structure
10.3 DIF Sequence
10.4 DIF Block
10.5 Frame Period
10.6 Playback Speed
Annex A (normative) 20 Bits Audio for Professional Use
A.1 - Channel Allocation
A.2 - Encoding Mode
A.3 - Audio Error Code
A.4 - Shuffling Method
Annex B (informative) Manufacturers
B.1 - Reference Tape
B.2 - Calibration Tape
B.3 - Purchase
Figure 1 - Sector arrangement on helical track (1125-60 and
1250-50 systems)
Figure 2 - 1125-60 system
Figure 3 - 1250-50 system
Figure 4 - Transmitting samples for 1125-60 system
Figure 5 - Transmitting samples for 1250-50 system
Figure 6 - DCT block and the pixel co-ordinates
Figure 7 - DCT block arrangement
Figure 8 - Macro block and DCT block order
Figure 9 - Arrangement of macro blocks for 1125-60 system
Figure 10 - Super blocks and macro blocks in a frame on TV
screen for 1125-60 system
Figure 11 - Super blocks and macro blocks in a frame on TV
screen for 1250-50 system
Figure 12 - Macro block order in a super block
Figure 13 - Area number
Figure 14 - The arrangement of a compressed macro block
Figure 15 - The arrangement of a video segment after bit-rate
reduction
Figure 16 - The relation between the compressed macro block
number and the data-sync block
Figure 17 - Main area and optional area (1125-60 system)
Figure 18 - Main area and optional area (1250-50 system)
Figure 19 - Data structure for transmission
Figure 20 - Transmission order of DIF blocks in a DIF sequence
Figure 21 - ID data in a DIF block
Figure 22 - Data in the header section
Figure A.1 - Sample to data bytes conversion for 20 bits
Table 1 - Record location and dimensions (1125-60 system,
1250-50 system)
Table 2 - Sector location from SSA (1125-60 system,
1250-50 system)
Table 3 - Scanner example (1125-60 system, 1250-50 system)
Table 4 - Sequence number (1125-60 and 1250-50 systems)
Table 5 - Track pair number (1125-60 system)
Table 6 - Track pair number (1250-50 system)
Table 7 - Construction of an audio block
Table 8 - Basic channel allocation rule in multi-stereo audio
Table 9 - Channel allocation rule for lumped audio
Table 10 - The number of audio samples per frame
(unlocked mode)
Table 11 - The allowance range of the accumulated difference
value between the numbers of audio samples per
frame in synchronous channels
Table 12 - The number of audio samples per frame (locked mode)
Table 13 - The construction of video signal sampling (12:4:4)
Table 14 - An example of the classification for reference
Table 15 - Quantization step
Table 16 - AAUX data of the main area
Table 17 - VAUX data of the main area
Table 18 - TIA data in the header section
Table 19 - DIF blocks and subcode sync blocks
Table 20 - DIF blocks and VAUX data-sync blocks
Table 21 - DIF blocks and audio data-sync blocks
Table 22 - DIF blocks and compressed macro blocks
Table A.1 - Basic channel allocation rule
Identifies basic principles which apply to the next generation of digital video cassette recording systems for consumers, for the interest of manufacturers and users. The content, format and recording method of data blocks which form the helical records on the tape holding video, audio and system data are defined and specifications for the 1125-line system with frame frequency 30,00 Hz and the 1250-line system with frame frequency 25,00 Hz.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 100 |
