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 6: SDL FORMAT
International Electrotechnical Committee
FOREWORD
1 General
1.1 Scope
1.2 Normative references
1.3 Definitions, symbols and abbreviations
1.4 Environmental and test conditions
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 section
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
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 FR ID
8.3 Main area and optional area
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) Long play mode with narrow track pitch
A.1 - Helical recording
A.2 - Absolute track number
Annex B (normative) Definition of AUX positions on digital
interface in SDL mode
B.1 - Transmitting pattern
B.2 - Data structure for digital interface
Figure 1 - Frames and tracks (525-60 system)
Figure 2 - Frames and tracks (625-50 system)
Figure 3 - Transmission samples for 525-60 system
Figure 4 - Transmission samples for 625-50 system
Figure 5 - DCT block and the pixel coordinates
Figure 6 - Rightmost DCT block in the colour difference
signal
Figure 7 - DCT block arrangement
Figure 8 - Macro block and DCT blocks
Figure 9 - Super blocks and macro blocks in a frame on TV
screen for 525-60 system
Figure 10 - Super blocks and macro blocks in a frame on TV
screen for 625-50 system
Figure 11 - Macro block order in a super block
Figure 12 - Arrangement of video segment after bit rate
reduction
Figure 13 - The relationship between the compressed macro
block number and the data-sync block
Figure 14 - Data structure for transmission
Figure B.1 - Data in the header section
Figure B.2 - DFF and VAUX main area
Table 1 - Record location and dimensions
Table 2 - Sector location from SSA (525-60 system)
Table 3 - Sector location from SSA (625-50 system)
Table 4 - Scanner example
Table 6 - Track pair number (625-50 system)
Table 7 - Audio encoding mode in an audio block
Table 8 - The construction of an audio block
Table 9 - Basic channel allocation rule in SD-2ch audio
Table 10 - Number of audio samples per frame (unlocked mode)
Table 11 - Number of audio samples per frame (locked mode)
Table 12 - Subcode data in the main operational area and
recommended data for the optional area in the case
of no optional use (for user's tape)
Table 13 - Subcode data in the main operational area and
recommended data for the optional area in the case
of no optional use (for pre-recorded tape)
Table 14 - DIF sequence numbering (525-60 system)
Table 15 - DIF sequence numbering (625-50 system)
Table 16 - DIF blocks and subcode sync blocks
Table 17 - DIF blocks and VAUX data-sync blocks
Table 18 - DIF blocks and audio data-sync blocks
Table 19 - DIF blocks and compressed macro blocks
Table A.1 - Record location and dimensions
Table A.2 - Sector location from SSA (525-60 system)
Table A.3 - Sector location from SSA (625-50 system)
Table B.1 - Transmitting pattern
Table B.2 - DIF frame flag
Describes the format extension, using higher compression to increase recording time and reduce running costs. All DVCRs must have the capability of recording and/or playback in SD (SP) mode, this extension is optional.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 100 |
