1、Januar 2008DEUTSCHE NORM DKE Deutsche Kommission Elektrotechnik Elektronik Informationstechnik im DIN und VDEPreisgruppe 28DIN Deutsches Institut fr Normung e.V. Jede Art der Vervielfltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut fr Normung e.V., Berlin, gestattet.ICS 33.
2、160.40!$Jg9“1396822www.din.deDDIN IEC 62447-2Videokassettensystem mit komprimierter digitalerSchrgspuraufzeichnung auf Magnetband 6,35 mm Format D-12 Teil 2: Kompressionsformat (IEC 62447-2:2007); Text EnglischHelical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D
3、-12 Part 2: Compression format (IEC 62447-2:2007); Text in EnglishSystme de vidocassette enrigistrement hlicodal digital comprim en utilisant unebande magntique de 6,35 mm Format D-12 Partie 2: Format de compression (CEI 62447-2:2007); Texte en anglaisAlleinverkauf der Normen durch Beuth Verlag GmbH
4、, 10772 Berlin www.beuth.deGesamtumfang 69 SeitenNationales Vorwort Vorausgegangener Norm-Entwurf: E DIN IEC 62447-2:2006-07. Fr diese Norm ist das nationale Arbeitsgremium K 742 Audio-, Video- und Multimediasysteme, -gerte und -komponenten“ der DKE Deutsche Kommission Elektrotechnik Elektronik Info
5、rmationstechnik im DIN und VDE (http:/www.dke.de) zustndig. Die enthaltene IEC-Publikation wurde vom TC 100 Audio, video and multimedia systems and equipment“ erarbeitet. Das IEC-Komitee hat entschieden, dass der Inhalt dieser Publikation bis zu dem auf der IEC-Website unter http:/webstore.iec.ch“ m
6、it den Daten zu dieser Publikation angegebenen Datum (maintenance result date) unverndert bleiben soll. Zu diesem Zeitpunkt wird entsprechend der Entscheidung des Komitees die Publikation besttigt, zurckgezogen, durch eine Folgeausgabe ersetzt oder gendert. Da sich die Benutzer der vorliegenden Norm
7、 der englischen Sprache als Fachsprache bedienen, wird die Englische Fassung der IEC 62455 verffentlicht. Fr die meisten der verwendeten Begriffe existieren keine gebruchlichen deutschen Benennungen, da sich die deutschen Anwender in der Regel ebenfalls der englischen Benennungen bedienen. Diese Nor
8、m steht nicht in unmittelbarem Zusammenhang mit Rechtsvorschriften und ist nicht als Sicherheitsnorm anzusehen. Das Prsidium des DIN hat mit Prsidialbeschluss 1/2004 festgelegt, dass DIN-Normen, deren Inhalt sich auf internationale Arbeitsergebnisse der Informationsverarbeitung grndet, unter bestimm
9、ten Bedingungen allein in englischer Sprache verffentlicht werden drfen. Diese Bedingungen sind fr die vorliegende Norm erfllt. Fr den Fall einer undatierten Verweisung im normativen Text (Verweisung auf eine Norm ohne Angabe des Ausgabedatums und ohne Hinweis auf eine Abschnittsnummer, eine Tabelle
10、, ein Bild usw.) bezieht sich die Verweisung auf die jeweils neueste gltige Ausgabe der in Bezug genommenen Norm. Fr den Fall einer datierten Verweisung im normativen Text bezieht sich die Verweisung immer auf die in Bezug genommene Ausgabe der Norm. Der Zusammenhang der zitierten Normen mit den ent
11、sprechenden Deutschen Normen ergibt sich, soweit ein Zusammenhang besteht, grundstzlich ber die Nummer der entsprechenden IEC-Publikation. Beispiel: IEC 60068 ist als EN 60068 als Europische Norm durch CENELEC bernommen und als DIN EN 60068 ins Deutsche Normenwerk aufgenommen. DIN IEC 62447-2:2008-0
12、12CONTENTS CONTENTS3 1 Scope 6 2 Normative references .6 3 Abbreviations and acronyms .7 4 Data processing .7 4.1 General .7 4.1.1 Video encoding parameter8 4.1.2 Audio encoding parameter8 4.1.3 Subcode data.8 4.1.4 Frame structure .8 4.2 Data structure9 4.3 Header section 10 4.3.1 ID 10 4.3.2 Data
13、13 4.4 Subcode section14 4.4.1 ID 14 4.4.2 Data 14 4.5 VAUX section 18 4.5.1 ID 18 4.5.2 Data 18 4.6 Audio section.22 4.6.1 ID 22 4.6.2 Data 22 4.7 Video section.27 4.7.1 ID 27 4.7.2 Data 27 5 Video compression .31 5.1 Video structure 31 5.1.1 Video sampling structure31 5.1.2 DCT block36 5.1.3 Macro
14、 block .37 5.1.4 Super block .48 5.1.5 Definition of super block number, macro block number and value of the pixel.48 5.1.6 Definition of video segment and compressed macro block.52 5.2 DCT processing.53 5.2.1 DCT mode .53 5.2.2 Weighting 54 5.2.3 Output order 55 5.3 Quantization56 5.3.1 Introductio
15、n56 5.3.2 Bit assignment for quantization.56 5.3.3 Quantization step.56 5.4 Variable length coding (VLC) .57 5.5 Arrangement of a compressed macro block 60 5.6 Arrangement of a video segment62 DIN IEC 62447-2:2008-013Annex A (informative) Block diagram of D-12 recorder66 Annex B (normative) Digital
16、filter for sampling-rate conversion67 Annex C (informative) Relation to IEC 61834-3.68 Bibliography .69 Figure 1 Data processing block diagram .8 Figure 2 Data structure 9 Figure 3 Data structure of a DIF sequence .10 Figure 4 Data in the subcode section14 Figure 5 Pack in SSYB.15 Figure 6 Data in t
17、he VAUX section .19 Figure 7 Data in the audio section 22 Figure 8 Conversion of audio sample to audio data bytes24 Figure 9 Arrangement of AAUX packs in audio auxiliary data 24 Figure 10 Sampling structure for the 1080/60i system.34 Figure 11 Sampling structure for the 1080/50i system.35 Figure 12
18、Sampling structure for the 720/60p system36 Figure 13 DCT block and the pixel coordinates for the 1080-line system .40 Figure 14 DCT block and the pixel coordinates for the 720-line system .40 Figure 15 DCT block arrangement for the 1080/60i system .40 Figure 16 DCT block arrangement for the 1080/50
19、i system .40 Figure 17 DCT block arrangement for the 720/60p system 41 Figure 18 Macro block and DCT blocks for the 1080-line system.41 Figure 19 Macro block and DCT blocks for the 720-line system.41 Figure 20 Arrangement of macro blocks for the 1080/60i system.42 Figure 21 Arrangement of macro bloc
20、ks for the 1080/50i system.43 Figure 22 Arrangement of macro blocks for the 720/60p system44 Figure 23 Divided blocks for the 1080/60i system .45 Figure 24 Divided blocks for the 1080/50i system .46 Figure 25 Divided blocks for the 720/60p system 47 Figure 26 Super blocks and macro blocks in a divid
21、ed block for the 1080/60i system.49 Figure 27 Macro block order in a super block for the 1080/60i system .49 Figure 28 Super blocks and macro blocks for the 1080/50i system 50 Figure 29 Macro block order in a super block for the 1080/50i system .50 Figure 30 Super blocks and macro blocks in a divide
22、d block for the 720/60p system .51 Figure 31 Macro block order in a super block for the 720/60p system51 Figure 32 Rearrangement of pixels in the 8-8-field-DCT mode 54 Figure 33 Quantizer matrix for the 1080/60i system 55 Figure 34 Quantizer matrix for the 1080/50i system 55 Figure 35 Quantizer matr
23、ix for the 720/60p system .55 Figure 36 The output order of a weighted DCT block.56 Figure 37 Arrangement of a compressed macro block.60 Figure 38 Arrangement of a video segment after the bit rate reduction 64 DIN IEC 62447-2:2008-014Figure 39 Video error code.65 Figure A.1 Block diagram of D-12 rec
24、order .66 Figure B.1 Template for insertion-loss frequency characteristic.67 Figure B.2 Pass band ripple tolerance 67 Table 1 ID data of a DIF block11 Table 2 Section type 11 Table 3 DIF sequence number for the 60 Hz system .12 Table 4 DIF sequence number for the 50 Hz system .12 Table 5 DIF channel
25、 number 13 Table 6 DIF block number 13 Table 7 Data (payload) in the header section13 Table 8 SSYB ID15 Table 9 Pack header table .16 Table 10 Mapping of packets in SSYB data 16 Table 11 Mapping of time code pack 17 Table 12 Mapping of binary group pack 18 Table 13 Mapping of VAUX pack in a DIF sequ
26、ence .19 Table 14 Mapping of VAUX source pack.19 Table 15 Mapping of VAUX source control pack20 Table 16 FF/FS for the 1080-line system 21 Table 17 FF/FS for the 720-line system 21 Table 18 Mapping of AAUX pack in a DIF sequence .24 Table 19 Mapping of AAUX source pack.25 Table 20 Mapping of AAUX so
27、urce control pack26 Table 21 SPEED code definition.27 Table 22 Video DIF blocks and compressed macro blocks for the 60 Hz system29 Table 23 Video DIF blocks and compressed macro blocks for the 50 Hz system30 Table 24 Construction of input video 33 Table 25 Quantization step 57 Table 26 Length of cod
28、ewords58 Table 27 Codewords of variable length coding59 Table 28 Definition of STA .61 Table 29 Codewords of the QNO62 Table B.1 Parameter of digital filter 67 DIN IEC 62447-2:2008-015HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM USING 6,35 mm MAGNETIC TAPE FORMAT D-12 Part 2: Compression fo
29、rmat 1 Scope This part of IEC 62247 defines the data structure for the interface of DV-based digital audio, subcode data, and compressed video at 100 Mb/s. This standard defines the processes required to decode the DV-based data structure into eight channels of AES-3 digital audio at 48 kHz, subcode
30、 data, and high-definition video at 1080/60i, 1080/50i, and 720/60p. The following high-definition video parameters are used in this standard: 1080/60i system Input video format: 1920 1080 image sampling structure, 59,94 Hz field rate, interlace format. Compressed video data rate: 100 Mb/s. 1080/50i
31、 system Input video format: 1920 1080 image sampling structure, 50 Hz field rate, interlace format. Compressed video data rate: 100 Mb/s. 720/60p system Input video format: 1280 720 image sampling structure, 59,94 Hz frame rate, progressive format. Compressed video data rate: 100 Mb/s. In this stand
32、ard, the 60 Hz system nomenclature refers to both 1080/60i and 720/60p systems; whereas the 50 Hz system refers only to the 1080/50i system. The nomenclature 1080-line system refers to both 1080/60i and 1080/50i systems, while the 720-line system refers only to the 720/60p system. 2 Normative refere
33、nces The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. SMPTE 12M:1999, Television, Audio and Film T
34、ime and Control Code SMPTE 274M:1998, Television, 1920 1080 Scanning and Analog and Parallel Digital Interfaces for Multiple Picture Rates SMPTE 260M:1999, Television, 1125/60 High-Definition Production System Digital Representation and Bit Parallel Interface SMPTE 296M:1997, Television, 1280 720 Sc
35、anning, Analog and Digital Representation and Analog Interface DIN IEC 62447-2:2008-016AES3:1992, Serial Transmission Format for Two-Channel Linearly Represented Digital Audio Data 3 Abbreviations and acronyms AAUX Audio auxiliary data AP1 Audio application ID AP2 Video application ID AP3 Subcode ap
36、plication ID APT Track application ID Arb Arbitrary AS AAUX source pack ASC AAUX source control pack CGMS Copy generation management system CM Compressed macro block DBN DIF block number DCT Discrete cosine transform DIF Digital interface DRF Direction flag Dseq DIF sequence number DSF DIF sequence
37、flagEFC Emphasis audio channel flag EOB End of block LF Locked mode flag QNO Quantization number QU Quantization Res Reserved for future use SCT Section type SMP Sampling frequency SSYB Subcode sync block STA Status of the compressed macro block STYPE Signal type Syb Subcode sync block number TF Tra
38、nsmitting flag VAUX Video auxiliary data VLC Variable length coding VS VAUX source pack VSC VAUX source control pack 4 Data processing 4.1 General As shown in Figure 1, processed audio, video and subcode data are output for recording on a D-xx recorder. Additionally, these data are output in DIF for
39、mat data for a different application DIN IEC 62447-2:2008-017through a digital interface port. Details of this process are shown in Figure 1 and described in Clauses 3 and 4. Dotted lines are related to the data flow described in the VTR document. Annex A shows the block diagram of D-xx recorder. Fi
40、gure A.1 of this standard shows the part defined by this compression format document. 4.1.1 Video encoding parameter The source component signal to be processed shall comply with the video parameters as defined by SMPTE 274M and SMPTE 296M. 4.1.2 Audio encoding parameter The audio signal is sampled
41、at 48 kHz with 16-bit quantization defined by AES3. 4.1.3 Subcode data The time code format in the subcode area complies with SMPTE 12M. 4.1.4 Frame structure In 1080/60i and 1080/50i systems, video frame data, audio frame data, and subcode data are processed in each frame. The audio frame in this s
42、tandard is defined as an audio-processing unit. In the 720/60p system, data in two video frames are processed within one frame duration of the 1080/60i system. Consequently, audio data and subcode data are processed in the same way as the 1080/60i system. Each frame of time code shows a frame number
43、 that corresponds to each video frame in the 1080-line system, and two video frames each in 720/60p system. Therefore, time codes of the 1080/60i and 720/60p systems are the same. Sampling Conversion Blocking/ Shuffling DCT Weighting QuantizationVLC/FormatterRatecontrolShuffling DIF formatter Video
44、274M 296M Audio AES3 Subcode 12M DIF Recording8 bits or more8/10 bits Figure 1 Data processing block diagram IEC 898/07 DIN IEC 62447-2:2008-0184.2 Data structure The data structure of the compressed stream at the digital interface is shown in Figure 2. The data of each frame are divided into four D
45、IF channels. Each DIF channel is divided into 10 DIF sequences for the 60 Hz system and 12 DIF sequences for the 50 Hz system. Each DIF sequence consists of a header section, subcode section, VAUX section, audio section, and video section with the following DIF blocks respectively. Header section: 1
46、 DIF block Subcode section: 2 DIF blocks VAUX section: 3 DIF blocks Audio section: 9 DIF blocks Video section: 135 DIF blocks As shown in Figure 2, each DIF block consists of a 3-byte ID and 77 bytes of data. DIF data bytes are numbered 0 to 79. Figure 3 shows the data structure of a DIF sequence. B
47、yte position number0 1 2 3 - - - - - - - - - - - - - - - - - - - - - - - - 79Structure of a DIFsequenceDIF blocksStructure of a DIF blockDIF sequencesDIF block number DIF channel numberDIF sequence number DIF channel numberData in one frameFirst channel Second channel Third channel Fourth channelDIF
48、 sequence 0,0 DIF sequence 1,0 DIF sequence n-1,0 DIF sequence 0,1 DIF sequence n-1,3Header section Subcode section VAUX section Audio n = 12 for the 50 Hz system. Figure 2 Data structure IEC 899/07 DIN IEC 62447-2:2008-019H0,i SC0,i SC1,i VA0,i VA1,i VA2,iA0,i V0,i V1,i V2,i V3,i V4,i V5,i V6,i V7,
49、i V8,i V9,i V10,i V11,i V12,i V13,i V14,iA1,i V15,i V16,i V17,i V18,i V19,i V20,i V21,i V22,i V23,i V24,i V25,i V26,i V27,i V28,i V29,iA2,i V30,i V31,i V32,i V33,i V34,i V35,i V36,i V37,i V38,i V39,i V40,i V41,i V42,i V43,i V44,iA3,i V45,i V46,i V47,i V48,i V49,i V50,i V51,i V52,i V53,i V54,i V55,i V56,i V57,i V58,i V59,iA4,i V60,i V61,i
