1、 CEA Standard High Definition TV Analog Component Video Interface CEA-770.3-E June 2013 NOTICE Consumer Electronics Association (CEA) Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purcha
2、sers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards, Bulletins and other technical publications shall not in any respect preclude any membe
3、r or nonmember of CEA from manufacturing or selling products not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications preclude their voluntary use by those other than CEA members, whether the st
4、andard is to be used either domestically or internationally. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, CEA does not assume any liability to any patent owner, nor does it
5、assume any obligation whatever to parties adopting the Standard, Bulletin or other technical publication. This document does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this document to establis
6、h appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. This document is copyrighted by the Consumer Electronics Association (CEA) and may not be reproduced, in whole or part, without written permission. Federal copyright law prohibits u
7、nauthorized reproduction of this document by any means. Organizations may obtain permission to reproduce a limited number of copies by entering into a license agreement. Requests to reproduce text, data, charts, figures or other material should be made to CEA. (Formulated under the cognizance of the
8、 CEA R4.8 DTV Interface Subcommittee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2013 Technology Amendment 2 (60169-8-am2-1997-11), Annex A (informative): Information for interface dimensions of 75 ohm characteristic impedance connector with unspecified reflection factor ITU-R BT.709-2, Paramete
9、r Values for the HDTV Standard for Production and International Program Exchange ANSI/SMPTE Standard 274M (1995), Standard for Television - 1920 X 1080 Scanning and Analog and Parallel Digital Interfaces for Multiple-Picture Rates ANSI/SMPTE Standard 296M (1997), Standard for Television - 1280 X 720
10、 Scanning, Analog and Digital Representation and Analog Interface NOTEBy permission from the Society of Motion Picture and Television Engineers, sections of this standard are directly obtained from SMPTE Standard 274M (1995) and SMPTE Standard 296M. SMPTE RP 177 (1993), Derivation of Basic Televisio
11、n Color Equations 1 This document was formerly designated as IEC 169-8. CEA-770.3-E 2 2.1.2 Normative Reference Acquisition CIE Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way East, Englewood, CO USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Ema
12、il IEC Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way East, Englewood, CO USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email IEC Central Office, 3, rue de Varembe, PO Box 131, CH-1211 Geneva 20, Switzerland; Phone +41 22 919 02 11; Fax +41 2
13、2 919 03 00; Internet http:/www.iec.ch; Email pubinforiec.ch ITU Standards: International Telecommunications Union, Place des Nations, CH-1211 Geneva 20, Switzerland; Phone +41 22 730 5111; Fax +41 22 733 7256; Internet http:/www.itu.ch/publications/bookstore.html; Email itumailitu.int SMPTE Standar
14、ds: Society of Motion Picture Phone 914-761-1100; Fax 914-761-3115; Internet http:/www.smpte.org; Email engsmpte.org 2.2 Informative References 2.2.1 Informative References discussion The following references contain provisions, which, through reference in this text, constitute informative provision
15、s of this standard. At the time of publication, the edition indicated was valid. 2.2.2 Informative References List BS EN 60933-5:1993 Audio, video and audiovisual systems. Interconnections and matching values. Specification for Y/C connector for video systems. Electrical matching values and descript
16、ion of the connector CEI IEC 933-5: Y/C Connector for video systems electrical matching values and description of the connector. (Also known as: IEC 60933-5) 2.2.3 Informative Reference Acquisition CIE Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way East, Englewood, CO
17、USA 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email BS EN Standards: BSI British Standards, 389 Chiswick High Road, London, W4 4AL, United Kingdom; Phone +44 (0)20 8996 9001; Fax +44 (0)20 8996 7001; Internet http:/www.bsi-; Email: CEA-770.3-E 3 3 General Scanning systems
18、allowed in this standard shall conform to the parameters in Table 1. Scanning Nomenclature Samples per active line (S/AL) Active lines per frame Frame Rate (Hz) Scanning format Pixel Freq. (MHz) Samples per total line (S/TL) Total lines per frame 1 1280 x 720 1280 720 60 Progressive 74.25 1650 750 2
19、 1280 x 720 1280 720 60/1.001 Progressive 74.176 1650 750 3 1920 x 1080 1920 1080 30 2:1 Interlace 74.25 2200 1125 4 1920 x 1080 1920 1080 30/1.001 2:1 Interlace 74.176 2200 1125 Note-Scanning systems 1 systems 3 lines in a frame shall be uniformly scanned from top to bottom. Lines are numbered in t
20、ime sequence according to the raster structure described in Section 6. 4.3 Timing Instants Timing instants in each line shall be defined with respect to a horizontal datum denoted by 0H that is established by horizontal synchronizing (sync) information in Section 7. Each line shall be represented by
21、 a number of samples, equally spaced, as indicated by the column S/TL in Table 1. The time between any two adjacent sample instants is called the reference clock interval T. In each scanning system of Table 1, T shall be equal to the inverse of pixel frequency. 4.4 Progressive Systems A progressive
22、system shall convey all the active picture lines per frame in order from top to bottom. 4.5 Interlaced Systems An interlaced system shall scan a frame as a first field then as a second field, in which the scan lines of each field have twice the vertical spatial sampling pitch of the frame. Scanning
23、lines in the second field shall be displaced vertically by the vertical sampling pitch, and scanning timing shall be delayed temporally by half the frame time, from scanning lines in the first field. For the 1080i system, the first field shall convey 540 active picture lines, starting with the top p
24、icture line of the frame. The second field shall convey 540 active picture lines, ending with the bottom picture line of the frame. 5 System Colorimetry 5.1 Colorimetric Analysis and Optoelectronic Transfer Equipment should be designed in accordance with the colorimetric analysis and optoelectronic
25、transfer function defined in this section. This corresponds to ITU-R BT.709. Throughout this standard, references to signals, represented by a single primed letter such as R, G, B, refer to signals to which the following transfer characteristics have been applied. Such signals are commonly described
26、 as being gamma corrected. 5.2 Wide-Gamut Color Signals Digital representation and treatment of wide-gamut color signals are not specified in the current edition of the international standard for HDTV colorimetry, ITU-R BT.709-2. In particular, coding ranges for digital CEA-770.3-E 4 primary compone
27、nts R, G, and B are not specified. Designers of new equipment are urged to take into account the approach and current status of international agreement. 5.3 Linear Representation Picture information shall be linearly represented by red, green, and blue tristimulus values (RGB), lying in the range 0
28、(reference black) to 1 (reference white), whose colorimetric attributes are based upon reference primaries with the chromaticity coordinates in Table 2, in conformance with ITU-R BT.709-2, and whose reference white conforms to CIE D65 as defined by CIE 15.2. CIE x CIE y Red primary 0.640 0.330 Green
29、 primary 0.300 0.600 Blue primary 0.150 0.060 White reference 0.3127 0.3290 Table 2 Chromaticity Coordinates NOTE-Under some circumstances the colorimetry of the source video may not be ITU-R-BT 709-2 compliant. 5.4 Computing Nonlinear Primary Components From the red, green, and blue tristimulus val
30、ues, three nonlinear primary components R, G, and B shall be computed according to the optoelectronic transfer function of ITU-R BT.709, where L denotes a tristimulus value and V denotes a nonlinear primary signal: V = 4 .5 , 0 L 0 .0 1 8 1 .0 9 9 L - 0 .0 9 9 , 0 .0 18 L 1 0 . 4 5 5.5 Signal Level
31、Range To ensure the proper interchange of picture information between analog and digital representations, signal levels shall be completely contained in the range specified between reference black and reference white specified in Section 8, except for overshoots and under-shoots due to processing. 5
32、.6 Y Computation The Y component shall be computed as a weighted sum of nonlinear R G B primary components, using coefficients calculated from the reference primaries according to the method given in SMPTE RP 177: Y = 0.2126 R + 0.7152 G + 0.0722 B 5.7 Color-Difference Component Signals Color-differ
33、ence component signals PB and PR having the same excursion as the Y component shall be computed as follows: PB = 0.5 (B-Y) 1 - 0.0722 PR = 0.5 (R-Y) 1- 0.2126 CEA-770.3-E 5 6 Raster Structures 6.1 Vertical Timing Details for the vertical timing for each scanning system of Table 1 are presented in Fi
34、gure 1 and Figure 2. 6.2 Frame Lines In progressive systems of 720p, each frame shall comprise 750 lines including: a) vertical blanking, lines 1 through 25 inclusive (including vertical sync, lines 1 through 5 inclusive) and lines 746 through 750 lines inclusive; and b) picture, 720 lines, 26 throu
35、gh 745 inclusive. 6.3 Field Lines In interlaced systems of 1080i, the first field shall comprise 563 lines including: a) vertical blanking, lines 1 through 20 inclusive and lines 561 through 563; and b) picture, 540 lines, 21 through 560 inclusive. The second field shall comprise 562 lines, includin
36、g: c) vertical blanking: lines 564 through 583 inclusive and lines 1124 and 1125; and d) picture, 540 lines, 584 through 1123 inclusive. Interlaced analog vertical sync shall be located on lines 1 through 5 for the first field and from halfway through line 563 to halfway through line 568 for the sec
37、ond field. 6.4 Blanking Level During time intervals not otherwise used, the Y, PB, PR, shall have a blanking level corresponding to zero volts (reference black). 6.5 Clean Aperture The aspect ratio of the image for each system is represented by the production aperture, and the clean aperture shall b
38、e 16:9. The sample aspect ratio is 1:1, which defines square pixels. 6.6 Sample Encroachment An encroachment of six samples maximum on each of the left and right edges of the production aperture is allowed for horizontal blanking errors generated by analog processing. 7 Analog Synchronization 7.1 An
39、alog Sync for the 720p Systems 7.1.1 Analog Sync Timing Details of analog sync timing are shown in Figure 4, Figure 5, and Figure 6, and are summarized in Table 3. 7.1.2 0H Datum A positive zero-crossing of a tri-level sync pulse shall define the 0H datum for each line. A negative-going transition p
40、recedes this instant by 40 reference clock intervals, and another negative-going transition follows this instant by 40 reference clock intervals. 7.1.3 Tri-level Sync Positive Transition Positive transition of a tri-level sync pulse shall be skew symmetric with a rise time from 10% to 90% of 4 1.5 r
41、eference clock periods. The 50% point of each negative transition shall be coincident with its ideal time within a tolerance of 3 reference clock periods. 7.1.4 Tri-Level Sync Pulse Structure and Timing The tri-level sync pulse shall have structure and timing according to Figure 4 and Figure 6. The
42、positive peak of the sync shall have a level of +300 mV 6 mV; its negative peak shall have a level of -300 mV 6 mV. The amplitude difference between positive and negative sync pulses shall be less than 6 mV. CEA-770.3-E 6 Duration (T) Tolerance (T) a See Figure 6 40 3 b See Figure 6 1540 - 6, +0 c S
43、ee Figure 6 40 3 d See Figure 6 260 -0, +6 e See Figure 6 260 -0, +6 Sync rise time 4 1.5 Total lines 1650 Active lines 1280 - 12, +0 Table 3 Sync Timing for 720p System 7.1.5 Line Blanking Level Each line that includes a vertical sync pulse shall maintain blanking level, here denoted zero, except f
44、or the interval(s) occupied by sync pulses. During the horizontal blanking interval, areas not occupied by sync shall be maintained at blanking level, here denoted zero. 7.1.6 Frame Initiation Each frame shall commence with five vertical sync lines, each having a broad pulse. The leading 50% point o
45、f a broad pulse shall be 250T after the preceding tri-level zero-crossing. The trailing 50% point of a broad pulse shall be 1540T after the preceding tri-level zero-crossing. 7.2 Analog Sync for the 1080i Systems 7.2.1 Analog Sync Timing Details of analog sync timing are shown in Figure 1, Figure 2,
46、 and Figure 3, and are summarized in Table 4. The parameter not shown in these figures is the duration of the rising edge of horizontal sync pulse. 7.2.2 Positive Zero-Crossing A positive zero-crossing of a tri-level sync pulse shall define the 0H datum for each line. A negative-going transition pre
47、cedes this instant by 44 reference clock intervals, and another negative-going transition follows this instant by 44 reference clock intervals. 7.2.3 Positive Transition Positive transition of a tri-level sync pulse shall be skew symmetric with a rise time from 10% to 90% of 4 1.5 reference clock pe
48、riods. The midpoint of each negative transition shall be coincident with its ideal time within a tolerance of 3 reference clock periods. 7.2.4 Pulse Structure and Timing The tri-level sync pulse shall have structure and timing according to Figure 1 and Figure 3. The positive peak of sync shall have
49、a level of +300 mV 6 mV; its negative peak shall have a level of -300 mV 6 mV. The amplitude difference between positive and negative sync pulses shall be less than 6 mV. Duration (T) Tolerance (T) a See Figure 3 44 3 b See Figure 3 2112 - 6, + 0 c See Figure 3 44 3 d See Figure 3 132 3 e See Figure 3 192 - 0, + 6 Sy
