1、SMPTE 349M-2001 CMPTE STANDARD for Television - Transport of Alternate Source Image Formats through SMPTE 292M Page 1 of 11 pages 1 Scope This standard specifies the transport of component 525-line interlaced, 525-line progressive, 625-line interlaced, and 625-line progressive scan source formats th
2、rough SMPTE 292M, the bit-serial digital interface for high-definition television systems. 2 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. A
3、ll standards are subject to revision, and patties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. 0 ANSVSMPTE 125M-1995, Television - Component Video Signal 4:2:2 - Bit-Parallel Digital Interface
4、 ANSVSMPTE 259M-1997, Television - 10-Bit 4:2:2 Component and 4fs Composite Digital Signals - Serial Digital Interface ANSVSMPTE 267M-1995, Television - Bit-Parallel Digital Interface - Component Video Signal 4:2:2 16x9 Aspect Ratio ANSVSMPTE 293M-1996, Television - 720 x 483 Active Line at 59.94-Hz
5、 Progressive Scan Production - Digital Representation ANSVSMPTE 294M-1997, Television - 720 x 483 Active Line at 59.94-Hz Progressive Scan Production - Bit-Serial Interfaces SMPTE 291 M-1998, Television - Ancillary Data Packet and Space Formatting SMPTE 292M-1998, Television - Bit-Serial Digital Int
6、erface for High-Definition Television Systems SMPTE 344M-2000, Television - 540-Mb/s Serial Digital Interface SMPTE 352M-2001, Television - Video Payload Identification for Digital Television Interfaces SMPTE RP 174-1 993, Bit-Parallel Digital Interface for 4:4:4:4 Component Video Signal (Single Lin
7、k) ITU-R BT.601-5 (10/95), Studio Encoding Parameters of Digital Television for Standard 4:3 and Wide-Screen 16:9 Aspect Ratios ITU-R BT.656-4 (02/98), Interfaces for Digital Component Video Signals in 525-Line and 625-Line Television Systems Operating at the 4:2:2 Level of Recommendation ITU-R BT.6
8、01 (Patt A) ITU-R BT.799-3 (02/98), Interfaces for Digital Compo- nent Video Signals in 525-Line and 625-Line Televi- sion Systems Operating at the 4:4:4 Level of Recommendation ITU-R BT.601 (Part A) - ITU-R BT.1358 (02/98), Studio Parameters of 625 and 525 Line Progressive Scan Television Systems I
9、TU-R BT.1362 (02/98), Interfaces for Digital Compo- nent Video Signals in 525- and 625-Line Progressive Scan Television Systems Copyright 82001 by ME SOCIElY OF MOTION PICNRE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1100 Approved June 25,2001 SMPTE 349M-2001 3
10、 Introduction High-definition television equipment and systems ca- pable of a variety of image formats use the 1.485 Gbls or 1.485/1 .O01 Gb/s serial digital interface. This high- definition equipment and these systems will, in many cases, be capable of processing other scanning for- mats, such as 5
11、25-line interlacedprogrescive and 625-line interlacedprogrescive. To allow the use of a single digital interface for these formats, in addition to the originally intended 11 25-line interlacedprogressive and 750-line Progressive scan formats, this standard defines the transport of alter- nate format
12、s through an SMPTE 292M serial digital interface. This specification is based on adjusting the number of lines to match those of the source formats while keeping a common clock rate. Each source format is mapped onto the interface format, as specified in clause 5. 4 Source formats Frame and line str
13、ucture, parallel and multiplexed word rate, and reference standards for the alternate source formats to be transmitted through a 1.485 Gb/s serial digital interface are shown in the top half of table 1. The meanings of the case and type values in table 1 are described in the next clause. Word count
14、values in the table are for either the Y, CdCr source format or the R, G, B, A source format. 5 Interface format 5.1 Serial data formatting The serial data format, channel coding, coaxial cable interface, and optical fiber interface shall be as speci- fied in SMPTE 292M. 5.2 Interface format paramet
15、ers The frame and line structure, parallel and serial word rate, and case and type of the interface format shall be as shown in the bottom half of table 1 and figure 1. Word count values in the table are for either the Y or C channel of the interface format. 5.3 Case value The case value of table 1
16、shall be used to define the number of lines per frame and whether the available data area is a standard (S) or ex- tended (E) length. The length value defines the horizontal line parameters including total line length, data area length, and H-ANC length. The specification of the available data area
17、is dependent on the interface line number rate and the values are defined in table 1. 5.4 Type value The type value of table 1 shall be used to define the method of source format data packing onto the inter- face. Source format data may be either interlaced (I) or progressive (P) and mapped onto the
18、 interface as defined later in this standard. 5.5 Interface word rate The interface parallel word rate shall be exactly 74.25 Mwordds. NOTE - The interface parallel word rate is exactly 74.25 Mworddc even for 525-line 29.97 frame rate source for- mats. 5.6 Interface frame rate In the case of 525-lin
19、e source formats, the frame rate of the interface format shall be 30/1 .O01 Hz 2:l inter- laced. In the case of 625-line source formats, the frame rate of the interface format shall be 25 Hz 2:l interlaced. 5.7 Lines per frame The total lines per frame of the interface format shall be the same as th
20、e total lines per frame of the source format. 5.8 Words per line In the case of 525-line interlaced and progressive sourceformats, the total words per line of the interface format shall be 4719. In the case of 625-line interlaced source formats, the total words per line of the interface format shall
21、 be 4752. NOTE - These numbers are derived from the following equation: 74.25 Mwordc = 525 x 471 9 x 3011 .O01 = 625 x 4752 x 25 Page 2 of 11 pages SMPTE 349M-2001 Total words per line 858 1144 Table 1 - Parameters of source and interface format Source format Frame Fields Parallel and rate per multi
22、plexed (Hz) frame word rate Signal type Reference standards 30lM 2 27 Mbls 4:2:2i SMPTE 125MlSMPTE 259M 301M 2 36 Mbls 4:2:2i SMPTE 267MlSMPTE 259M Total lines Per frame 858 858 525 301M 2 54 Mbls 4:4:4:4i SMPTE RP 174/SMPTE 344M 601M 1 27 Mbls x2 4:2:2p SMPTE 293MlSMPTE 294M 858 858 601M 1 54 Mbls
23、4:2:2p SMPTE 293MlSMPTE 344M 601M 1 36 Mbls 4:2:0p SMPTE 293MlSMPTE 294M 864 1152 25 2 27 Mbls 4:2:2i ITU-R BT.6OllITU-R BT.656 25 2 36 Mbls 4:2:2i ITU-R BT.6OllITU-R BT.656 2 54 Mbls 4:4:4:4i ITU-R BT.799lSMPTE 344M 1 27 Mbls x2 4:2:2p ITU-R BT.1358lITU-R BT.1362 864 50 12 Interface format 864 864
24、Total lines 50 1 54 Mbls 4:2:2p ITU-R BT.1358lSMPTE 344M 50 1 36 Mbls 4:2:0p ITU-R BT.1358lITU-R BT.1362 21 Per H -AN C 607 31 525 Case Length Type A S I 8/ 607 127 q 625 12 A S I B E I Total words Per line 471 9 4752 607 607 Frame rate (Hz) 301M 25 A S I A S I Fields Per frame 2 607 127 Words A S P
25、 B E I E 41 O0 640 1 C 41 O0 74.25 Mbls IT S I I 4100 640 I C I S I- I NOTE - M = l .001, S = standard, E = extended. 128 640 Words 1 I I I D E I C S I 640 640 C S I C S P , I , I 128 I D E I I 1 I I L I I 1 I I I l Page 3 of 11 pages SMPTE 349M-2001 4 I 607(case A), 127 (case B), 640 (case C), 4100
26、 (case A, C), 4580 (case B), Interface Y Interface C Case A, i3 (525-lines) F = O during field 1 F = 1 during field 2 V = O elsewhere V = 1 during field blanking Lines 4 to 265 Lines 266 to 3 Lines 20 to 263 Lines 283 to 525 Lines 1 to 19 Lines 264 to 282 F bit, V bit, C, D (625-lines) Lines 1 to 31
27、2 Lines 313 to 625 Lines 23 to 31 O Lines 336 to 623 Lines 624 to 22 Lines 31 1 to 335 L,I L ,- L-,L,I EAV LN CRC SAV Digital Line Blanking Figure 1 - interface format 5.9 Line description The data for each line shall be comprised of the following sequence of component parts: EAV (end of active vide
28、o), LN (line number), CRC (cyclic redundancy code), H-ANC (digital line blanking), SAV (start of active video), and data area. Each of these component parts is as shown in figure 1, including standard and extended length values defined for the different line rates. 5.10 EAV, SAV, LN and CRC The EAV
29、and SAV for each of the two parallel data streams (Y channel and C channel) including the F and V bits for cases A and B shall be as specified in ANSVSMPTE 125M and for cases C and D in ITU-R BT.656. Values of the F and V bits for cases A, B, C, and D shall be as shown in table 2. Line 1 of the sour
30、ce format shall be mapped onto line 1 of the interface format. The LN and CRC for each of the two parallel data streams shall be as specified in SMPTE 292M. 5.1 1 Anciliary data space Ancillary data space consists of H-ANC and V-ANC data space and each of two parallel data streams (Y channel and C c
31、hannel) of the interface format shall be available for ancillary data packets as specified in SMPTE 291M. Ancillary data space where no ancil- lary data exists shall be set to 040h for the Y channel and 200h for the C channel. Code words OOh, Olh, 02h, 03h, 3FCh, 3FDh, 3FEh, and 3FFh shall be prohib
32、ited from ancillary data words. Page 4 of 11 pages SMPTE 349M-2001 5.1 1.1 H-Ancillary data space The H-ANC space shall be in the digital line blanking area as shown in figure 1. extended length mode (case B), and 2304 words for 625 lines in the extended length mode (case D). 6.2.2 Source format and
33、 the channel 5.1 1.2 V-Ancillary data space The V-ANC space shall be in the data area where the V bits of EAV and SAV are 1 as shown in table 2. 5.12 Format identification H-ANC packet The format identification shall be provided by a 4-byte label encapsulated in an H-ANC data packet accord- ing to S
34、MPTE 352M. Each component of the source formats, V, CdCr, R, G, B, and A in table 1 are firstly word-multiplexed either as a Pair Of (y, cdcr), a Pair Of (R, G) Or a Pair Of (B, A), then mapped onto the channels of the data of the interface format either as a type I or type P. The mapped order shall
35、 be Chl, Ch2, Ch3, and Ch4. Source formats 1,2,6,7,8, and 12 in table 1 shall be mapped Onto Chl- Source formats 39 4, 51 9, 10, and l1 shall be formats on one interface (interface C or interface Y) are not permissible. Ch3 and Ch4 are optional. When the Onto Chl and Ch2- Mixed 6 Mapping data format
36、s The active video of the source format shall be mapped onto the data area of the interface format. The C and Y channels shall have the same mapping mode. This clause describes the normal mapping mode. An alternative whole-line mapping mode is defined in annex A. The normal mapping mode shall be sup
37、- ported by all equipment designed to this standard whereas whole-line mapping is provided as an option and may not be supported by all equipment. 6.1 Mapping mode The mapping mode bit shall be set to O as specified in SMPTE 352M. 6.2 Dataarea The data area consists of two portions of data and an an
38、tipathological (AP) sequence of four words as shown in figure 2. The active video data of the source format shall be mapped on this area. source format does not exist, the default value of each word of the associated channels shall be set to 0401,. NOTE - Link A of source formats 4 and 1 O shall be
39、mapped onto Chl of the interface format. 6.2.3 Types I and P Source formats are mapped onto the source data channels of the interface format as either type I or type P as shown in figures 2a and 2b. Column 11 of table 1 identifies whethera source format is mapped as type I or type P. Type I: Word-mu
40、ltiplexed pairs of the source format shall be diversely mapped onto Chl (and Ch2 if necessary) of the interface format as shown in figure 2a. All the source formats except 5 and 11 shall be mapped as this type. Type P: Word-multiplexed pairs of each odd line of the source format shall be consecutive
41、ly mapped onto Chl of the interface format, and those of each even line onto Ch2 as shown in figure 2b. 6.2.4 AP 6.2.1 Data size The total size of the two portions of the data in both the interface-C and interface-Y is 4096 words for the standard length mode (cases A and C), 4576 words for 525 lines
42、 in the extended length mode (case B), and 4608 words for 625 lines in the extended length mode (case D) as shown in figure 2. The two portions of the data consist of four channels: Chl and Ch2 in the interface-C and Ch3 and Ch4 in the interface-Y. Each channel has 2048 words for the standard length
43、 mode (cases A and C), 2288 words for 525 lines in the The AP (antipathological) signal shall consist of four words each set to 040h. The AP sequence provides the capability to prevent pathological sequences in one source channel from affecting another source channel. The AP signal shall not be put
44、on the V-ANC area. 6.2.5 Channel structure The source format on each channel consists of an inner EAV, vacant area, inner SAV, and video as shown in figure 3 and table 3. Page 5 of 11 pages SMPTE 349M-2001 4 t s Data area (o Data area li-ANC interface “ interiace $ y 4 3E 3 H-ANC C w -ru IIIIII II d
45、z:$5 $50 H-ANC o v) H-ANC Interface Y ch1 (line N of source format) 4. Interface C AP ch2 (une N+l of source format) LA L1 c1 - t - b. 4 b./ Data Data d Data Data 4 111111 II I1111I I1 IlIlIli I -1 I I I -1 -1 1 I I I I I LIA v LI 1 - r 4 2048 (case A, C), 2288 (case B), 2304 (case O) 4 2048 (case A
46、, C), 2288 (case e), 2304 (case D) 2-a - Type I 4100 (case A. C) t. 4 (Interface Y) (Interface C) / Data Data *. 9 1 1 Daia Data 5 * 4 : I I I I 2-b -Type P Figure 2 - Types I and P Page 6 of 11 pages SMPTE 349M-2001 L EAV H-ANC SAV Video No. Total word pairs per AV line SAV Word Mapping on the chan
47、nel I l I I I 1 2 3 1716 2288 1716 - - 600 1440 120 2160 8 2 A 1 B 600 1440 120 1920 600 1440 - 1 C 1 C 2 C - - 600 1440 600 1440 2 C 2 C Source format Interface format Inner I Vacantarea I Inner I Video I 1 Channel Figure 3 - Source format mapping onto the channel (normal mapping) Table 3 - Mapping
48、 onto the channel Source format I Interface format Word pairs Per H-ANC pairs Number 268 1440 I 607 I 2048 I 600 1440 1 1 IA 1x1 1920 I 1 IA I 360 268 Wl I 600 I 1440 I 2 1 A 268 268 8 2288 1728 2304 Wl 120 280 376 1920 1 640 I 2048 1 - - 1440 I 640 I 2048 280 280 280 12 1 2304 I 136 2160 I 128 1 23
49、04 I 1 136 I 2160 I 2 ID Page 7 of 11 pages SMPTE 349M-2001 6.2.6 Inner EAV and inner SAV When mapping the word-multiplexed pairs of the source format onto the channel, inner EAV and inner SAV shall be used to define the location of the video and vacant area in the channel as shown in figure 3 and table 3. shall be used as the reference timing for the source format of each channel. Inner EAV and inner SAV shall not be put on the V-ANC area. 6.2.7 Video The size of inner EAV and inner SAV in each channel shall be four words. Each value of the four words shall be 3FEh, OO
