1、 Copyright 2011 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Approved March 30, 2011 Table of Contents Page Foreword . 2 Intellectual Property 2 1 Scope . 3 2 Conformance Notation . 3 3 Normative References . 3 4 General. 4 5 Source
2、 Image Formats . 5 5.1 4:2:2 (YCBCR)/10-bit Signals at 60, 60/1.001, 50, 48 and 48/1.001 Progressive Frame Rates . 5 5.2 4:4:4 (RGB) and 4:4:4:4 (RGB+A)/10-bit Signals at 30, 30/1.001, 25, 24 and 24/1.001 Frame Rates, PsF and at 60, 60/1.001 and 50 Field Rates 8 5.3 4:4:4 (RGB or XYZ)/12-bit Signals
3、 at 30, 30/1.001, 25, 24 and 24/1.001 Frame Rates, PsF and 4:4:4 (RGB)/12-bit Signals at 60, 60/1.001 and 50 Field Rates . 10 5.4 4:4:4 (YCBCR), 4:4:4:4 (YCBCR A)/10-bit and 4:4:4 (YCBCR)/12-bit Signals at 30, 30/1.001, 25, 24 and 24/1.001 Frame Rates, PsF and at 60, 60/1.001 and 50 Field Rates . 13
4、 5.5 4:2:2:4 (YCBCRA)/12-bit Signals at 30, 30/1.001, 25, 24, 24/1.001 Frame Rates, PsF and at 60, 60/1.001 and 50 Field Rates 14 6 Interface . 17 6.1 Signal Timing Considerations . 17 6.2 Ancillary Data-Optional . 17 6.3 Progressive Formats . 17 6.4 Audio Data 17 6.5 Time Code . 17 7 Payload Identi
5、fication . 17 7.1 Ancillary Data Packet Specifications 18 7.2 Placement of Payload Identifier Ancillary Data Packet 20 Annex A Bibliography (Informative) . 21 Annex B Document Road Map (Informative) . 22 Page 1 of 22 pages SMPTE ST 372:2011 Revision of SMPTE 372-2009 SMPTE STANDARD Dual Link 1.5 Gb/
6、s Digital Interface for 1920 1080 and 2048 1080 Picture Formats SMPTE ST 372:2011 Page 2 of 22 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 Amer
7、ica, 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.
8、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 ST 372 was prepared by Technology Committee 32NF. Intellectual Property A
9、t the time of publication no notice had been received by SMPTE claiming patent rights essential to the implementation of this Standard. However, attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. SMPTE shall not be held responsible f
10、or identifying any or all such patent rights. SMPTE ST 372:2011 Page 3 of 22 pages 1 Scope This standard specifies the mapping of the source image data defined in Table 1 onto a dual-link 1.5 Gb/s HD-SDI (Link A and Link B) in conformance with SMPTE ST 292-1. The total data rate of the dual link con
11、nection is 2.970 Gb/s or 2.970/1.001 Gb/s. This dual link also specifies carriage of the embedded audio, ancillary data and the payload ID of the stream in conformance with SMPTE ST 291, SMPTE ST 299-1 and SMPTE ST 352. The image source digital representations are defined in SMPTE ST 274, SMPTE ST 4
12、28-9, SMPTE ST 428-19 and SMPTE ST 2048-2. 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, but not
13、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 individua
14、l 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 recommended
15、 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“ indicate cours
16、es 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 be defi
17、ned 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 implement
18、 them as described. 3 Normative References Note: All references in this document to other SMPTE documents use the current numbering style (e.g. SMPTE ST 12-2:2008) although, during a transitional phase, the document as published (printed or PDF) may bear an older designation (such as SMPTE 12M-2-200
19、8). Documents with the same root number (e.g. 12-2) and publication year (e.g. 2008) are functionally identical. 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. Al
20、l standards are subject to revision, and parties to agreements based on this recommended practice are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. SMPTE ST 12-2:2008, Television Transmission of Time Code in the Ancillary Data Space S
21、MPTE ST 372:2011 Page 4 of 22 pages SMPTE ST 274:2008, Television 1920 1080 Image Sample Structure, Digital Representation and Digital Timing Reference Sequences for Multiple Picture Rates SMPTE ST 291:2010, Ancillary Data Packet and Space Formatting SMPTE ST 292-1:2011, 1.5 Gb/s Signal/Data Serial
22、Interface SMPTE ST 299-1:2010, 24-Bit Digital Audio Format for SMPTE ST 292-1 Bit-Serial Interface SMPTE ST 352:2011, Payload Identification Codes for Serial Digital Interfaces SMPTE ST 428-9:2008, D-Cinema Distribution Master Image Pixel Structure Level 3 Serial Digital Interface Signal Formatting
23、SMPTE ST 428-19:2010, D-Cinema Distribution Master Additional Frame Rates Level AFR2 and Level AFR4 Serial Digital Interface Signal Formatting SMPTE ST 2048-2:2011, 2048 1080 Digital Cinematography Production Image FS/709 Formatting for Serial Digital Interface 4 General This dual link standard is i
24、ntended to extend SMPTE ST 292-1 applications to include RGB, XYZ and RFSGFSBFS(hereafter RGB indicates either RGB or RFSGFSBFS) and 10-bit and 12-bit source signals, as well as to provide for the carriage of an optional Alpha channel. See Table 1. In addition, support for frame rates greater than 3
25、0 Frames per second are documented. 4.1 When 60P,59.94P,50P,48P,47.95P/4:2:2/10-bit signals are present, data in the 4:2:2 (YCBCR) format shall be divided line sequentially into two data streams, 4.2 When 4:4:4:4 (RGB+A)/10-bit signals are present, Link A shall carry all the G samples plus B and R e
26、ven-numbered samples. Link B shall carry the B and R odd-numbered samples,and, if present, the samples of the alpha channel. 4.3 When 4:4:4 (RGB) or XYZ 12-bit signals are present, Link A shall carry the most significant 10 bits of all the G or Y samples plus the most significant 10 bits of B or Z a
27、nd R or X even-numbered samples. Link B shall carry the most significant 10 bits of the B or Z and R or X odd-numbered samples, plus the least significant 2 bits of the RGB or XYZ samples which are mapped to the alpha channel. 4.4 When 4:4:4 (YCBCR), 4:4:4:4 (YCBCRA)/10-bit or 4:4:4 (YCBCR)/12-bit s
28、ignals are present, the data structure of Link A and Link B shall be identical to that used for RGB, RGB+A/10-bit or RGB/12-bit respectively. 4.5 When 4:2:2:4 (YCBCR A) 12-bit signals are present, Link A shall carry the most significant 10 bits of all the Y samples plus the most significant 10 bits
29、of CBand CR even-numbered samples. Link B shall carry the least significant 2 bits of the Y, CBand CReven-numbered samples, plus the least significant 2 bits of the Y (only) odd-numbered samples plus the alpha channel. 4.6 Link A and Link B shall carry SAV, EAV as defined in SMPTE ST 274, Line Numbe
30、r data (LN) and CRC as defined in SMPTE ST 292-1. SMPTE ST 372:2011 Page 5 of 22 pages 5 Source Image Formats The source image formats used in this standard shall be as defined in Table 1. Table 1 Source signal formats Reference SMPTE Standard Image Format Signal Format Sampling Structure/Pixel Dept
31、h Frame Rates Document Section Number ST 274 1920 1080 4:2:2 (YCBCR)/10-bit 60, 60/1.001 and 50 Progressive 5.1 4:4:4 (RGB), 4:4:4:4 (RGB +A see note)/10-bit 30, 30/1.001, 25, 24 and 24/1.001 Progressive, PsF 60, 60/1.001 and 50 Fields Interlaced 5.2 4:4:4 (RGB)/12-bit 5.3 4:4:4 (YCBCR), 4:4:4:4 (YC
32、BCR+A see note) /10-bit 5.4 4:4:4 (YCBCR)/12-bit 5.4 4:2:2 (YCBCR)/12-bit, 4:2:2:4 (YCBCRA)/12-bit 5.5 ST 2048-212048 1080 4:2:2 (YCBCR)/10-bi t 60, 60/1.001, 50, 48 and 48/1.001 Progressive 5.1 4:4:4 (RGB), 4:4:4:4 (RGB +A see note)/10-bit 30, 30/1.001, 25, 24 and 24/1.001 Progressive, PsF 5.2 4:4:
33、4 (RGB)/12-bit 5.3 4:4:4 (YCBCR), 4:4:4:4 (YCBCR+A see note) /10-bit 5.4 4:4:4 (YCBCR)/12-bit 5.4 4:2:2 (YCBCR)/12-bit, 4:2:2:4 (YCBCRA)/12-bit 5.5 ST 428-9 2048 1080 4:4:4 (XYZ)/12-bit 24 Progressive, PsF 5.3 ST 428-19 2048 1080 4:4:4 (XYZ)/12-bit 25 and 30 Progressive, PsF 5.3 Note: Definition of
34、the A channel is application-dependent. In the cases when the A channel is used for non- picture data, the payload is constrained to 8-bit words maximum 5.1 4:2:2 (YCBCR)/10-bit Signals at 60, 60/1.001, 50, 48 and 48/1.001 Progressive Frame Rates 5.1.1 Data Stream Mapping Mapping of the data created
35、 by the 4:2:2 picture sampling structure shall be as shown in Figures 1 and 2. Each line of the source picture raster shall be alternately mapped between Link A and Link B. 1 RGB indicates either RGB or RFSGFSBFS. SMPTE ST 372:2011 Page 6 of 22 pages 5.1.2 Timing Reference Signals and Line Numbers T
36、he F (field/frame), V (vertical), H (horizontal), P3, P2, P1, P0 (parity) bits and the line numbers of Link A and Link B shall be as shown in Figures 1 and 2 and shall be as defined in SMPTE ST 274 and SMPTE ST 292-1. 5.1.2.1 The Line Number data carried in Link A and Link B shall be the digital int
37、erface Line Number defined in SMPTE ST 292-1 and shall not be the picture source line numbers. The relation between the digital interface line number and the picture source line number shall be as shown in Figure 2. 5.1.2.2 Buffering having a minimum duration of one horizontal line shall be required
38、 by this process at each interface, making a minimum transmission delay of two horizontal lines. 5.1.2.3 Figure 1 defines luma and color-difference signals multiplexing within a transmission package. EAV EAV EAV EAV SAV SAV SAV SAV YD0YD2047EAVa b c d aY streamEAV EAV EAV EAV SAV SAV SAV SAV CBD0CRD
39、1023EAVa b c d aCB/CRstreamTransmission package (length 2H, see Note)Note: H denotes one line period of the original 60, 60/1.001, 50 progressive signals as specified by SMPTE ST 274 or 60, 60/1.001, 50, 48, 48/1.001 progressive signals as specified by SMPTE ST 2048-2. Reference SMPTE Standard Frame
40、 Rate Total words per transmission package Total words of active image data per transmission package Word number a b c d ST 274 60 or 60/1.001 2200 1920 1920 2196 0 1919 ST 2048-2 60 or 60/1.001 2200 2048 2048 2196 0 2047 ST 274 50 2640 1920 1920 2636 0 1919 ST 2048-2 50 2640 2048 2048 2636 0 2047 S
41、T 2048-2 48 or 48/1.001 2750 2048 2048 2746 0 2047 Figure 1 Multiplexed horizontal data stream SMPTE ST 372:2011 Page 7 of 22 pages 2 340 4142 431120 11211122 11231124 11251 23 441 4243 441121 11221123 11241125 1Link A Link BDigital Field Blanking(V=1)Digital Active Field(V=0)Digital Field Blanking(
42、V=1)Digital Active Field(V=0)Digital Field Blanking (V=1)Digital Field #1(F=0)(total lines: 563 x 2)Digital Field #2(F=1)(total lines: 562 x 2)12021560561562563564583584112311241125Original Picture Source Line NumberDigital Interface Line NumberFigure 2 1080P Link A/B line interleaving and line numb
43、ering 5.1.2.4 Line 42 of the source active picture and line 1122 of the source vertical blanking interval, when transported in Digital Field #2 of Link B shall be mapped on to the interface line 583 and line 1123 respectively. Interface line 583 of Link B carries active video data however V bit shal
44、l be set to 1, and interface line1123 of Link B does not carry active video data however the V bit shall be set to 0. 5.1.2.5 Link B Interface line number 583, samples number 0-1919 shall not be used to carry ancillary data packets. Note: Some early implementations do not adhere to this requirement.
45、 SMPTE ST 372:2011 Page 8 of 22 pages 5.2 4:4:4 (RGB) and 4:4:4:4 (RGB+A)/10-bit Signals at 30, 30/1.001, 25, 24 and 24/1.001 Frame Rates, PsF and at 60, 60/1.001 and 50 Field Rates 5.2.1 Source Sample Numbering Each line of the RGB and A channel shall consist of 2750, 2640 or 2200 total samples. Th
46、e samples are designated 0-2749, 0-2639 or 0-2199 and the individual samples are designated by suffixes such as “sample G135 or sample B429. See Figure 4. 5.2.2 Data Stream Mapping Link A data stream shall contain all the G channel samples plus the even-numbered (0, 2, 4, etc.) samples from the B an
47、d R channels. Link B data stream shall contain the odd-numbered (1, 3, 5, etc.) samples from the B and R channels plus all the A-channel samples (see Figure 3). SAV, EAV, LN and CRC shall be mapped onto Link A and Link B in conformance with SMPTE ST 274 and SMPTE ST 292-1. SOURCE SAMPLE NUMBER20 1 2
48、 3 4 5 G G G G G G LINK A B B B B B B R R R R R R LINK B A A A A A A Figure 3 4:4:4:4 (RGB+A)/10-bit Link A/B word interleaving 5.2.3 Multiplex Structure The video data words shall be conveyed in the following order: Link A data stream: B0, G0, R0, G1, B2, G2, R2, G3 Link B data stream: B1, A0, R1, A1, B3, A2, R3, A3 See Figures 3 and 4. 2This figure does not convey timing information, it represents data carried by link A and Link B; timing information is conveyed in multiplex structure section and 6.1 on interface. SMPTE ST 372:2011 Page 9 of
