1、 INTERNATIONAL STANDARD IEC 62447-1First edition 2007-06Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-12 Part 1: VTR specifications Reference number IEC 62447-1:2007(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All ri
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8、First edition 2007-06Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-12 Part 1: VTR specifications XC For price, see current catalogue PRICE CODE Commission Electrotechnique Internationale International Electrotechnical Commission 2 62447-1 IEC:2007(E) CONT
9、ENTS FOREWORD.7 1 Scope.9 2 Normative references .9 3 Abbreviations and acronyms.10 4 Environment and test conditions.10 4.1 Environment10 4.2 Reference tape11 4.3 Calibration tapes .11 4.3.1 Tape11 4.3.2 Record locations and dimensions 11 4.3.3 Calibration signals.11 5 Tape.11 5.1 Base11 5.2 Width
10、11 5.3 Width fluctuation .11 5.4 Reference edge straightness.11 5.5 Tape thickness 12 5.6 Transmissivity .12 5.7 Offset yield strength 12 5.8 Magnetic coating .12 5.9 Coating coercivity12 6 Helical recordings.12 6.1 Tape speed .12 6.2 Sectors12 6.3 Record location and dimensions12 6.4 Helical track
11、record tolerance zones13 6.5 Relative positions of recorded information.13 6.5.1 Relative positions of longitudinal tracks .13 6.5.2 Programme area reference point .13 6.6 Gap azimuth18 6.6.1 Cue and control track 18 6.6.2 Helical track 18 6.7 Transport and scanner 18 7 Programme track data 22 7.1 G
12、eneral .22 7.1.1 Introduction .22 7.1.2 Labeling convention.22 7.1.3 Signal processing 23 7.1.4 Magnetization32 7.2 Insert and track information (ITI) sector.32 7.2.1 Structure .32 7.2.2 ITI preamble32 7.2.3 Start sync area (SSA)32 7.2.4 Track information area (TIA)39 7.2.5 ITI postamble 40 62447-1
13、IEC:2007(E) 3 7.3 Audio sector 41 7.3.1 Structure .41 7.3.2 Audio pre and post-amble41 7.3.3 Audio sync block .41 7.4 Video sector 45 7.4.1 Structure .45 7.4.2 Video pre and post-amble46 7.4.3 Video sync block .46 7.5 Subcode sector .48 7.5.1 Structure .48 7.5.2 Subcode preamble and postamble.49 7.5
14、.3 Subcode sync block.49 7.6 Edit gap.51 8 Audio processing51 8.1 Introduction .51 8.2 Encoding mode .52 8.2.1 Source coding .52 8.2.2 Emphasis 52 8.2.3 Audio error code52 8.2.4 Relative audio-video timing52 8.2.5 Audio frame processing .52 8.3 Audio shuffling 54 8.4 Audio auxiliary data (AAUX) 55 8
15、.4.1 AAUX source pack (AS).56 8.4.2 AAUX source control pack (ASC).57 8.5 Error correction code addition .58 8.5.1 Inner error correction code 58 8.5.2 Outer error correction code58 9 Video processing60 9.1 Introduction .60 9.2 Compressed macro block and data-sync block 60 9.3 Video auxiliary data (
16、VAUX) 62 9.3.1 VAUX source pack (VS).63 9.3.2 VAUX source control pack (VSC).64 9.4 Error correction code addition .66 9.4.1 Inner error correction code 66 9.4.2 Outer error correction code66 10 Subcode processing .67 10.1 Introduction .67 10.2 Subcode data 67 10.2.1 Time code pack ( TC ) .69 10.2.2
17、 Binary group pack ( BG ) .69 10.3 Error correction code addition .70 11 Longitudinal tracks .71 11.1 Control track .71 11.1.1 Method of recording.71 11.1.2 Servo reference pulse .71 11.1.3 Flux polarity.71 4 62447-1 IEC:2007(E) 11.1.4 Flux level.71 11.1.5 Pulse width71 11.1.6 Servo reference pulse
18、timing .71 11.1.7 Colour frame indication71 11.2 Cue track 72 11.2.1 Method of recording.72 11.2.2 Flux level.72 11.2.3 Relative timing.72 Annex A (normative) Tape tension .73 Annex B (normative) Track pattern during insert editing.74 Annex C (normative) Cross-tape track measurement technique .75 An
19、nex D (informative) Relationship between tape length and recording time78 Annex E (informative) Interface79 Bibliography81 Figure 1 Location and dimensions of recorded tracks.14 Figure 2 Location of recorded cue and control track.15 Figure 3 Location and dimensions of tolerance zone of recorded heli
20、cal tracks18 Figure 4 Possible scanner configuration and tape wrap for four-head construction.20 Figure 5 Possible scanner configuration and tape wrap for eight-head construction .21 Figure 6 Possible recording system configuration (informative)23 Figure 7 Sector arrangement on helical track .23 Fig
21、ure 8 Modulation for audio sector24 Figure 9 Modulation for video sector 25 Figure 10 Modulation for subcode sector .26 Figure 11 Possible block diagram for signal processing .27 Figure 12 Bit stream before interleaved NRZI modulation 29 Figure 13 Frequency characteristics of tracks 29 Figure 14 Fre
22、quency characteristics of tracks (detail) 30 Figure 15 Pre-coding .31 Figure 16 Structure of ITI sector 33 Figure 17 Structure of audio sector 41 Figure 18 Structure of sync blocks in audio sector .42 Figure 19 Structure of video sector 46 Figure 20 Structure of sync blocks in video sector .47 Figur
23、e 21 Structure of subcode sector .48 Figure 22 Structure of sync blocks in subcode sector.50 Figure 23 Video and audio frame for the 1080/60i system53 Figure 24 Video and audio frame for the 1080/50i system53 Figure 25 Video and audio frame for the 720/60p system.54 Figure 26 Sample to audio data by
24、tes conversion 55 Figure 27 Arrangement of AAUX packs in audio auxiliary data.55 62447-1 IEC:2007(E) 5 Figure 28 Data and inner parity of a data sync block59 Figure 29 Data and outer parity of a data sync block for audio sector 59 Figure 30 Arrangement 63 Figure 31 Data and outer parity of a data sy
25、nc block for video sector.67 Figure 32 Arrangement of subcode data 68 Figure 33 Bit assignment for subcode data and parity70 Figure 34 Recorded control code waveform timing for the 60-Hz system71 Figure 35 Recorded control code waveform timing for the 50 Hz system72 Figure B.1 Typical track pattern
26、during insert editing .74 Figure C.1 Correction factors (actual tape speed, tension).77 Figure C.2 Track location error plot (example) .77 Figure C.3 Cross-tape measurement technique77 Figure E.1 Block diagram of HD recorder.80 Table 1 Record location and dimensions for the 60-Hz system.16 Table 2 R
27、ecord location and dimensions for the 50-Hz system.17 Table 3 Parameters for a possible scanner design.19 Table 4 Servo information31 Table 5 Bit stream of ITI preamble for servo information F 0 .33 Table 6 Bit stream of ITI preamble for servo information F 1 .34 Table 7 Bit stream of ITI preamble f
28、or servo information F 2 .35 Table 8 Bit stream of SSA for servo information F 0 36 Table 9 Bit stream of SSA for servo information F 1 37 Table 10 Bit stream of SSA for servo information F 2 38 Table 11 Bit stream of TIA for servo information F 0 .39 Table 12 Bit stream of TIA for servo information
29、 F 1 .39 Table 13 Bit stream of TIA for servo information F 2 .39 Table 14 Bit stream of ITI post-amble for servo information F 0 40 Table 15 Bit stream of ITI post-amble for servo information F 1 40 Table 16 Bit stream of ITI post-amble for servo information F 2 40 Table 17 ID data in audio sector
30、43 Table 18 Audio application ID 43 Table 19 Track pair number .44 Table 20 Bit assignment of ID codewords 45 Table 21 ID data in video sector 47 Table 22 Video application ID 48 Table 23 ID data in subcode sector50 Table 24 Subcode application ID51 Table 25 AAUX data 56 Table 26 Mapping of AAUX sou
31、rce pack 56 Table 27 Mapping of AAUX source control pack57 Table 28 Relation between the compressed macro block number and the data-sync block for the 60 Hz system61 6 62447-1 IEC:2007(E) Table 29 Relation between the compressed macro block number and the data-sync block for the 50 Hz system62 Table
32、 30 VAUX data 63 Table 31 Mapping of VAUX source pack 63 Table 32 Mapping of VAUX source control pack.64 Table 33 FF/FS for the 1080-line system65 Table 34 FF/FS for the 720-line system .65 Table 35 Mapping of subcode pack68 Table 36 Mapping of time code pack69 Table 37 Mapping of a binary group pac
33、k.70 Table C.1 Nomenclature and calculation of track location error76 Table D.1 Tape length, thickness, and recording time78 62447-1 IEC:2007(E) 7 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM USING 6,35 mm MAGNETIC TAPE FORMAT D-12 Part 1: VTR spe
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43、n is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC s
44、hall not be held responsible for identifying any or all such patent rights. International Standard IEC 62447-1 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: CDV Report on voting 100/
45、1091/CDV 100/1186/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 8 62447-1 IEC:2007(E) The list of all the parts of the IEC 62
46、447-1 series, under the general title Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-12, can be found on the IEC website. This Part 1 describes the VTR specifications which are tape, magnetization, helical recording, modulation method and basic system data
47、 for video compressed data. Part 2 describes the specifications for encoding process and data format for 1080i, 1080p and 720p systems. Part 3 describes the specifications for transmission of DV-based compressed video and audio data stream over 360 Mb/s serial digital interface. The committee has de
48、cided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 62447-1 IEC:2007(E) 9 HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM USING 6,35 mm MAGNETIC TAPE FORMAT D-12 Part 1: VTR specifications 1 Scope This part of IEC 62447 specifies the content, format
