1、 Copyright 2017 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 445 Hamilton Avenue, White Plains, NY 10601 (914) 761-1100 Approved October 23, 2017 Table of Contents Page 1 Scope. 3 2 Conformance Notation 3 3 Normative References . 3 4 General 4 5 Source Image Formats 5 5.1 4:2:2 (YCBCR)
2、or (ICTCP)/10-bit Signals at 60, 60/1.001, 50, 48 and 48/1.001 Progressive Frame Rates . 6 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 Progressive or PsF Frame Rates, and at 60, 60/1.001 and 50 Field Rates 8 5.3 4:4:4 (RGB or XYZ)/12-bit Signals at 30, 30/
3、1.001, 25, 24 and 24/1.001 Progressive or PsF Frame Rates and 4:4:4 (RGB)/12-bit Signals at 60, 60/1.001 and 50 Field Rates 10 5.4 4:4:4 (YCBCR) or (ICTCP), 4:4:4:4 (YCBCR A) or (ICTCPA)/10-bit and 4:4:4 (YCBCR) or (ICTCP) /12-bit Signals at 30, 30/1.001, 25, 24 and 24/1.001 Progressive or PsF Frame
4、 Rates and 4:4:4 (YCBCR), 4:4:4:4 (YCBCR A)/10-bit and 4:4:4 (YCBCR)/12-bit Signals at 60, 60/1.001 and 50 Field Rates 13 5.5 4:2:2:4 (YCBCRA) or (ICTCPA)/12-bit Signals at 30, 30/1.001, 25, 24, 24/1.001 Progressive or PsF Frame Rates and at 60, 60/1.001 and 50 Field Rates . 14 6 Interface 18 6.1 Si
5、gnal Timing Considerations 18 6.2 Ancillary Data-Optional . 18 6.3 Progressive Formats . 18 6.4 Audio Data 18 7 Payload Identification 19 7.1 Ancillary Data Packet Specifications . 19 7.2 Placement of Payload Identifier Ancillary Data Packet 22 Annex A Document Road Map (Informative) . 23 Bibliograp
6、hy (Informative) 24 Page 1 of 24 pages SMPTE ST 372:2017 Revision of SMPTE ST 372:2011 SMPTE STANDARD Dual Link 1.5 Gb/s Digital Interface for 1920 1080 and 2048 1080 Picture Formats SMPTE ST 372:2017 Page 2 of 24 pages Foreword SMPTE (the Society of Motion Picture and Television Engineers) is an in
7、ternationally-recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents. SMPTEs Engineering Documents, including Standards, Recommended Practices and Engineering Guidelines, are prepared by S
8、MPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. 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 Par
9、t XIII of its Administrative Practices. SMPTE ST 372 was prepared by Technology Committee 32NF. Intellectual Property At 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 possibilit
10、y that some of the elements of this document may be the subject of patent rights. SMPTE shall not be held responsible for identifying any or all such patent rights. SMPTE ST 372:2017 Page 3 of 24 pages 1 Scope This standard specifies the mapping of the source image data defined in Table 1 onto a dua
11、l-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 connection 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
12、 291-1, SMPTE ST 299-1 and SMPTE ST 352. The image source digital representations are defined in SMPTE ST 274, SMPTE ST 428-9, SMPTE ST 428-19 SMPTE ST 2048-2 and Recommendation ITU-R BT.2100. 2 Conformance Notation Normative text is text that describes elements of the design that are indispensable
13、or contains the conformance language keywords: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, but not indispensable, and can be removed, changed, or added editorially without affecting interoperability. Informative text does not contain any conformance
14、 keywords. All text in this document is, by default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or individual paragraphs that start with “Note:” The keywords “shall“ and “shall not“ indicate requirements strictly to be followed in order to conform to the doc
15、ument and from which no deviation is permitted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required; or th
16、at (in the negative form) a certain possibility or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicate 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 b
17、e used, and may be defined in the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never be defined in the future. A conformant implementation according to this document is one that includes all mandatory provisions (“shall“) and, if implemented,
18、 all recommended provisions (“should“) as described. A conformant implementation need not implement optional provisions (“may“) and need not implement them as described. 3 Normative References The following engineering documents contain provisions which, through reference in this text, constitute pr
19、ovisions of this standard. At the time of publication, the editions indicated were valid. All 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 b
20、elow. SMPTE RP 2077:2013, Full Range Image Mapping SMPTE ST 12-2:2014, Television Transmission of Time Code in the Ancillary Data Space SMPTE ST 274:2008, Television 1920 1080 Image Sample Structure, Digital Representation and Digital Timing Reference Sequences for Multiple Picture Rates SMPTE ST 37
21、2:2017 Page 4 of 24 pages SMPTE ST 291-1:2011, Ancillary Data Packet and Space Formatting SMPTE ST 292-1:2012, 1.5 Gb/s Signal/Data Serial Interface SMPTE ST 299-1:2009, 24-Bit Digital Audio Format for SMPTE ST 292-1 Bit-Serial Interface SMPTE ST 352:2013, Payload Identification Codes for Serial Dig
22、ital Interfaces SMPTE ST 428-9:2008, D-Cinema Distribution Master Image Pixel Structure Level 3 Serial Digital Interface Signal Formatting SMPTE ST 428-19:2010, D-Cinema Distribution Master Additional Frame Rates Level AFR2 and Level AFR4 Serial Digital Interface Signal Formatting SMPTE ST 2048-2:20
23、11, 2048 1080 Digital Cinematography Production Image FS/709 Formatting for Serial Digital Interface Recommendation ITU-R BT.2100-1 (06/2017), Image parameter values for high dynamic range television for use in production and international programme exchange. 4 General This dual link standard is int
24、ended to extend SMPTE ST 292-1 applications to include ICTCP, 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
25、than 30 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) or (ICTCP), 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 samp
26、les plus B and R even-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
27、 bits of B or Z and 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) or (ICTCP), 4:4:4:4 (YCBCRA) or (
28、ICTCPA)/10-bit or 4:4:4 (YCBCR) or (ICTCP)/12-bit signals 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) or (ICTCPA), 12-bit signals are present, Link A shall carry the most significant
29、 10 bits of all the Y samples plus the most significant 10 bits of CB and CR even-numbered samples. Link B shall carry the least significant 2 bits of the Y, CB and CR even-numbered samples, plus the least significant 2 bits of the Y (only) odd-numbered samples plus the alpha channel. For ICTCP imag
30、e mapping, Y shall be replaced with I, CB shall be replaced with CT and CR shall be replaced with CP. 4.6 Link A and Link B shall carry SAV, EAV as defined in SMPTE ST 274, Line Number data (LN) and CRC as defined in SMPTE ST 292-1. SMPTE ST 372:2017 Page 5 of 24 pages 5 Source Image Formats The sou
31、rce image formats used in this standard shall be as defined in Table 1. Table 1 Source signal formats Reference Standard Image Format Signal Format Sampling Structure/Pixel Depth Frame / Field Rates Document Section Number ST 274 Recommendation ITU-R BT.2100 1920 1080 4:2:2 (YCBCR)/10-bit 4:2:2 (ICT
32、CP)/10-bit 60, 60/1.001 and 50 Frames Progressive 5.1 4:4:4 (RGB), 4:4:4:4 (RGB +A *1)/10-bit 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive or 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 (YCBCR+A *1) /10-bit 4:4:4 (ICTCP), 4:4:4:4 (ICTCP+A *1)/1
33、0-bit 5.4 4:4:4 (YCBCR)/12-bit 4:4:4 (ICTCP)/12-bit 5.4 4:2:2 (YCBCR)/12-bit, 4:2:2:4 (YCBCRA)/12-bit 5.5 ST 2048-2 *22048 1080 4:2:2 (YCBCR)/10-bit 60, 60/1.001, 50, 48 and 48/1.001 Frames Progressive 5.1 4:4:4 (RGB), 4:4:4:4 (RGB +A *1)/10-bit 30, 30/1.001, 25, 24 and 24/1.001 Frames Progressive o
34、r PsF 5.2 4:4:4 (RGB)/12-bit 5.3 4:4:4 (YCBCR), 4:4:4:4 (YCBCR+A *1) /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 Frames Progressive or PsF 5.3 ST 428-19 2048 1080 4:4:4 (XYZ)/12-bit 25 and 30 Frames Progressive or Ps
35、F 5.3 NOTE: In accordance with Recommendation ITU-R BT.2100, ICTCP sampling is only applied to High Dynamic Range (HDR) progressive image formats. *1Definition of the A channel is application-dependent. An auxiliary component signal designated A or Alpha may optionally accompany the RGB, RFSGFSBFS,
36、YCBCR or ICTCP video signal. If present it shall have the same characteristics as the Y, G or I channel. Interfaces containing the auxiliary component are denoted as RGB+A, YCBCR +A and ICTCP + A In the cases when the A channel is used for non- picture data, the payload is constrained to 8-bit words
37、 maximum *2RGB indicates either RGB or RFSGFSBFS SMPTE ST 372:2017 Page 6 of 24 pages 5.1 4:2:2 (YCBCR) or (ICTCP)/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 by the 4:2:2 picture sampling structure shall be as sho
38、wn in Figures 1 and 2. Each line of the source picture raster shall be alternately mapped between Link A and Link B. 5.1.2 Timing Reference Signals and Line Numbers The 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 s
39、hown 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 interface Line Number defined in SMPTE ST 292-1 and shall not be the picture source line numbers. The relation between the digital interf
40、ace 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 by this process at each interface, making a minimum transmission delay of two horizontal lines. 5.1.2.3 Figure 1 defines luma and col
41、or-difference signals multiplexing within a transmission package. Reference SMPTE Standard Frame 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
42、 2048 2196 0 2047 ST 274 50 2640 1920 1920 2636 0 1919 ST 2048-2 50 2640 2048 2048 2636 0 2047 ST 2048-2 48 or 48/1.001 2750 2048 2048 2746 0 2047 EAV EAV EAV EAV SAV SAV SAV SAV YnullD0YnullD2047EAVa b c d aYnull streamEAV EAV EAV EAV SAV SAV SAV SAV CnullBD0CnullRD1023EAVa b c d aCnullB/CnullRstre
43、amTransmission package (length 2H, see Note)SMPTE ST 372:2017 Page 7 of 24 pages Figure 1 Multiplexed horizontal data stream 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 spec
44、ified by SMPTE ST 2048-2. 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(V=1)Digital Active Field(V=0)Digital Field Blanking (V=1)Digital Field #1(F=0)(total lines: 563 x 2)Digita
45、l 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 numbering 5.1.2.4 Line 42 of the source active picture and line 1122 of the source vertical blanking interval,
46、 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 shall be set to 1, and interface line1123 of Link B does not carry active video data however the V bit shall b
47、e set to 0. SMPTE ST 372:2017 Page 8 of 24 pages 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. 5.2 4:4:4 (RGB) and 4:4:4:4 (RGB+A)/10-bit Signals at 30, 30/1.001,
48、25, 24 and 24/1.001 Progressive or PsF Frame Rates, 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. The samples are designated 0-2749, 0-2639 or 0-2199 and the individual samples are designated
49、 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 and R channels. Link B data stream shall contain the odd-numbered (1, 3, 5, etc.) samples fro
