1、 Copyright 2008 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1100 Approved February 14, 2008 Table of Contents Page Foreword . 2 1 Scope . 3 2 Conformance Notation . 3 3 Normative References . 3 4 SDI Image Data Format Constraints
2、4 5 Virtual Interface Data Format. 5 Annex A Ancillary Data (Normative) 8 Annex B Progressive Segmented Frame System (Normative) 9 Annex C Bibliography (Informative) . 10 Annex D Document Road Map (Informative). 11 Page 1 of 11 pages SMPTE 428-9-2008SMPTE STANDARD D-Cinema Distribution Master Image
3、Pixel Structure Level 3 Serial Digital Interface Signal Formatting SMPTE 428-9-2008 Page 2 of 11 pages Foreword SMPTE (the Society of Motion Picture and Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in the United States of Am
4、erica, SMPTE has members in over 80 countries on six continents. SMPTEs Engineering Documents, including Standards, Recommended Practices and Engineering Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work
5、. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accordance with the rules given in Part XIII of its Administrative Practices. SMPTE Standard 428-9 was prepared by Technology Committee DC28. SMPTE 428-9-2
6、008 Page 3 of 11 pages 1 Scope This standard defines the formatting and constraints of the DCDM SMPTE 428-1 Level 3 image Pixel Structure for transmission over the 1.485Gb/s dual link serial digital interface SMPTE 372M or 3Gb/s interface SMPTE 424M. The Serial Digital Interface (SDI) container para
7、meters for DCDM level 3 are given in Table 1. Table 1 SDI container pixel array DCDM level System nomenclature X Y Z samples per active line (S/AL) Lines per container (AL/F) Frame rate (Hz) Interface sampling frequency fs (MHz) X Y Z sample periods per total line (S/TL) Interface total lines per fr
8、ame 3 2048 1080/24/P 2048 1080 24 74.25 2750 1125 2 Conformance Notation Normative text is text that describes elements of the design that are indispensable or contains the conformance language keywords: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, b
9、ut not indispensable, and can be removed, changed, or added editorially without affecting interoperability. Informative text does not contain any conformance keywords. All text in this document is, by default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or in
10、dividual paragraphs that start with “Note:” The keywords “shall“ and “shall not“ indicate requirements strictly to be followed in order to conform to the document and from which no deviation is permitted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is reco
11、mmended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required; or that (in the negative form) a certain possibility or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicat
12、e courses of action permissible within the limits of the document. The keyword “reserved” indicates a provision that is not defined at this time, shall not be used, and may be defined in the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never
13、be defined in the future. A conformant implementation according to this document is one that includes all mandatory provisions (“shall“) and, if implemented, all recommended provisions (“should“) as described. A conformant implementation need not implement optional provisions (“may“) and need not im
14、plement them as described. 3 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements
15、based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. SMPTE 291M-2006, Television Ancillary Data Packet and Space Formatting SMPTE 428-1-2006, D-Cinema Distribution Master (DCDM) Image Characteristics SMPTE 428-9-20
16、08 Page 4 of 11 pages 4 SDI Image Data Format Constraints 4.1 The serial digital container is a fixed container size with a 2048x1080 pixel array . See Figure 1. 4.2 Within the serial digital container not all pixels will form the image as defined by SMPTE 428-1, these pixels shall be called padding
17、 pixels and have a value of 010h. The center of the DCDM Image pixel array shall correspond to the center of the SDI container. SDI ContainerImage Container centre, Active image centreHorizontal Pixels,2048Vertical Pixels1080Pixel number 0.0DCDM level 3 pixel structure- (May fill the container)Paddi
18、ng Pixels- Set to 010hPadding Pixels- Set to 010hCenterofthecontainerANDcenteroftheimageFigure 1 Serial digital container 4.3 The DCDM level 3 pixel image structure shall employ X, Y, Zcoding as defined in DCDM image pixel structure format, SMPTE 428-1, 4.4 X Y Z code values shall be contained withi
19、n the range of FEFh O10h. Values that may exist in the source signal, beyond these defined limits shall be clipped. 4.5 Code values FFOh- FFFhand 000h 00Fhare prohibited in the payload. SMPTE 428-9-2008 Page 5 of 11 pages 5 Virtual Interface Data Format There shall be 3 data channels, X, Y, Z each w
20、ith identical data structures 5.1 The data format at the virtual interface of each channel shall consist of sychronizing signals ( EAV and SAV) , the serial digital interface container, and ancillary data space. See Figures 1 and 2. Figure 2 Data Format Interface horizontal line Notes: 1 Horizontal
21、axis not to scale. 2 A line of SDI container extends from the first word of EAV through the last word of container data. 3 The number of samples of the SDI container data (sample number o through p in Figure 2) is 2048. That is, the letter o denotes sample number 0 and the letter p denotes sample nu
22、mber 2047 in the SDI container container. Table 2 Values for SDI container array structure Sample numbering Durations in reference clock periods (T) a b c d e k l m n o p A B C SDI container 2048 2049 2050 2051 2052 2746 2747 2748 2749 0 2047 2048 694 2750 5.2 SAV (start of active video) and EAV (en
23、d of active video) digital synchronizing sequences shall define synchronization across the serial digital interface. Figures 1, 2, and 3 show the relationship of the SAV and EAV sequences to SDI container data. 5.3 An SAV or EAV sequence shall comprise four consecutive code words: a code word of all
24、 ones, a code word of all zeros, another code word of all zeros, and a code word including F (frame), V (vertical), H (horizontal), P3, P2, P1, and P0 (parity) bits. An SAV sequence shall be identified by having H = 0; EAV shall have H = 1 (tables 3 and 4 show details of the coding). SDI CONTAINER D
25、ATA ANCILLARY DATA or BLANKING CODEWORDS EAV SAVSample Numbering Digital Data StreamDurations in Reference Clock Periods (T) duration in ref. clock periods 4T4T (EAV) A (2048T)klmnopabcde pabcd C (2750T) B (694T). .SMPTE 428-9-2008 Page 6 of 11 pages 5.4 Interface line numbers The interface shall ha
26、ve 1125 total number of lines, 1 thru 1125 inclusive. See Annex B. 5.5 In a progressive system, the EAV and SAV of all lines shall have F = 0; The EAV and the SAV of lines 1 through 41 inclusive and lines 1122 through 1125 inclusive shall have V = 1; The EAV and SAV of lines 42 through 1121 inclusiv
27、e shall have V = 0. 5.6 In a PsF system: The EAV and SAV of lines 1 through 563 inclusive shall have F = 0. The EAV and SAV of lines 564 through 1125 inclusive shall have F = 1; The EAV and SAV of lines 1 through 20, lines 561 through 583, and lines 1124 and 1125 shall have V = 1; The EAV and the SA
28、V of lines 21 through 560 and lines 584 through 1123 shall have V = 0. Figure 3 Digital levels and timing X,Y,Z 010h(16) FEFh(4079) EAVSAV EAVa e k o Sample instants a e SMPTE 428-9-2008 Page 7 of 11 pages Table 3 Timing reference codes1Bit number 11 (MSB) 10 9 8 7 6 5 4 3 2 1 0 (LSB) Word Value 0 F
29、FFh (4095) 1 1 1 1 1 1 1 1 1 1 1 1 1 000h (0) 0 0 0 0 0 0 0 0 0 0 0 0 2 000h (0) 0 0 0 0 0 0 0 0 0 0 0 0 3 1 F V H P3 P2 P1 P0 0 0 0 0 Table 4 Protection bits for SAV and EAV Bit number 11 10 9 8 7 6 5 4 3 2 1 0 Function 1 Fixed F V H P3 P2 P1 P0 0 Fixed 0 Fixed 0 Fixed 0 Fixed 0 1 0 0 0 0 0 0 0 0 0
30、 0 0 1 1 0 0 1 1 1 0 1 0 0 0 0 2 1 0 1 0 1 0 1 1 0 0 0 0 3 1 0 1 1 0 1 1 0 0 0 0 0 4 1 1 0 0 0 1 1 1 0 0 0 0 5 1 1 0 1 1 0 1 0 0 0 0 0 6 1 1 1 0 1 1 0 0 0 0 0 0 7 1 1 1 1 0 0 0 1 0 0 0 0 5.4.4 The assignment of lines numbers within an interface frame shall be: VANC data area: Lines 1 though 41 inclu
31、sive and lines 1122 through 1125. SDI Image container: 1080 lines, 42 (top of container) through 1121 (bottom of the container) inclusive. 1Terminology used in Table 3 is consistent with terminology used for television signals SMPTE 428-9-2008 Page 8 of 11 pages Annex A (Normative) Ancillary Data A.
32、1 Ancillary data may optionally be included in the blanking intervals of the digital interface according to this standard. A.2 The interval between the end of EAV and the start of SAV may be employed to convey HANC data packets2. A.3 The interval between the end of SAV and the start of EAV of any li
33、ne that is outside the container boundary, as defined in 4.5, may be employed to convey VANC data packets. A.4 ANC data packets may be conveyed across each of the X, Y and Z channels. A.5 The ANC data is defined by the most significant 10 bits of the 12-bit data and the least significant 2 bits shal
34、l be set to zero. A.6 Intervals not used to convey SAV, image data, EAV, or ancillary data shall convey the code word 010h(16) (black) in the X, Y, Z, channels. A.7 The ANC data format is defined by, SMPTE 291M. 2Designers should be aware that when the serial interface is employed in accordance with
35、 the mapping structures defined in SMPTE 372M or SMPTE 425M, the first eleven samples after EAV of Line 10 are reserved for video payload identifier usage. SMPTE 428-9-2008 Page 9 of 11 pages Annex B (Normative) Progressive Segmented Frame System B.1 A Progressive segmented Frame system shall transm
36、it a progressive image as if it were an interlaced Image. This provides a means of carrying a progressive image as two equally divided segments mapped onto an interlace interface. B.2 In a Progressive segmented Frame system, the assignment of lines within a progressive image shall be the same as tha
37、t of an interlaced image. More specifically, the assignment of each even line of a progressive image shall correspond to lines 1 through 562 of a segmented frame system image, and each odd line of a progressive image shall correspond to lines 563 through 1125 of a segmented frame system image. The r
38、elationship of line N of a progressive system image nd line M of a segmented frame system image shall be as shown by the following equation and as shown in Figure B.1. M = N/2 where N= 2, 4, 6,1124 M = (N+1125)/2 where N= 1, 3, 5,1125 12411125112411221120120583584211123112456156011211123112556242434
39、0563Active videoAreaLines 42-1121Active videoareaFirst SegmentLines 21-560Active videoareaSecond SegmentLines 584-1123Vertical BlankingVertical BlankingVertical BlankingVertical BlankingProgressive Picture/ Interface Line numberVertical BlankingLine number Segmented FrameSDI Container areaContainerC
40、ontainer area/ Interface Line numberInterface Line number/Segmented FrameSDI ContainerSDI ContainerSDI ContainerSDI Contain rSDI ContainerFigure B.1 Progressive segmented Frame system SMPTE 428-9-2008 Page 10 of 11 pages Annex C (Informative) Bibliography SMPTE 292-2008, 1.5 Gb/s Signal/Data Serial
41、Interface SMPTE 372M-2002, Television Dual Link 292M Interface for 1920 1080 Picture Raster SMPTE 424M-2006, Television 3 Gb/s Signal/Data Serial Interface SMPTE 425M-2006, Television 3 Gb/s Signal/Data Serial Interface Source Image Format Mapping SMPTE 428-9-2008 Page 11 of 11 pages Annex D (Informative) Document Road Map SMPTE 428-12048*1080DCDM Level 3SMPTE 428-924fpsDCDM Payload428-9M Virtual InterfaceSMPTE 372M Dual Link Interface and MappingSMPTE 425M 3Gbps SDI MappingSMPTE 292 1.5Gbps SDISerial InterfacesMapping ConstraintsMapping Source FormatsSMPTE 424M 3Gbps SDI
