1、 CEA Bulletin Home Theater Video Design CEA/CEDIA-CEB23-A March 2012 NOTICE Consumer Electronics Association (CEA)/Custom Electronic Design and Installation Association (CEDIA) Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunde
2、rstandings between manufacturers and purchasers, 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
3、shall not in any respect preclude any member or nonmember of CEA/CEDIA 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 us
4、e by those other than CEA/CEDIA members, whether the standard is to be used either domestically or internationally. Standards, Bulletins and other technical publications are adopted by CEA/CEDIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, CEA/CE
5、DIA does not assume any liability to any patent owner, nor does it 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
6、. It is the responsibility of the user of this Standard to establish 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)/Custom Electronic Design and Installati
7、on Association (CEDIA) and may not be reproduced, in whole or part, without written permission. Federal copyright law prohibits unauthorized reproduction of this document by any means. Organizations may obtain permission to reproduce a limited number of copies by entering into a license agreement. R
8、equests to reproduce text, data, charts, figures or other material should be made to CEA/CEDIA. (Formulated under the cognizance of the CEA/CEDIA R10 Residential Systems Committee.) Published by CONSUMER ELECTRONICS ASSOCIATION/ CUSTOM ELECTRONIC DESIGN AND INSTALLATION ASSOCIATION 2012 www.CE.org w
9、ww.CEDIA.org All rights reserved CEA/CEDIA-CEB23-A 1 The following members of the CEA/CEDIA R10 WG3 Home Theater Video Design Working Group contributed to the development of this document: Aaron Rigg, Avical Australia Travis Misterek, Best Buy Co. Inc. Jon Richardson, EchoStar Ron Sabin, Electronics
10、 Design Group Dennis Erskine, Erskine Group LLC Andres Colpa, Home Box Office (HBO) Jeff Murray, Imaging Sciences Foundation Joel Silver, Imaging Sciences Foundation Bill Whitlock, Jensen Transformers Thomas Bause, NBC Universal Michael Braithwaite, NetStreams/ClearOne Roger Kaimo, Panasonic Corpora
11、tion John Meehan, Panasonic Corporation Mark Stockfisch, Quantum Data, Inc. Tameez Sunderji, Rovi Corporation Walt Zerbe, Russound Josh Kairoff, Sharp Electronics Corporation L Heberlein, SpectraSales, Inc. Derek Smith, SpectraSales, Inc. CEA/CEDIA-CEB23-A 2 Foreword This bulletin was created by CEA
12、/CEDIA R10 Residential Systems Committee. This guide provides a standardized approach to theater installation and performance objectives outlines with recommendations for the design of high performance home theaters that meet or exceed the commercial experience. To meet those objectives, this docume
13、nt describes: Optimized Room layout and environment/system design Image performance objectives/specifications Recommended practices for image evaluation and calibration CEDIA and its certified Electronic Systems Contractors (ESCs) follow these practices, where applicable, to deliver high value to de
14、dicated home theater environments, helping ensure full performance potential for the equipment and the room. A cinematic experience is at its simplest definition an experience causing participants to feel as if they were watching a 35mm analog film motion picture in a commercial movie theater. Comme
15、rcial movie theaters are designed as an environment that supports, without distraction, creative storytelling using motion cinema as its medium. Anything that introduces or creates visual distractions is likely to erode the feeling of being in a cinema. Unlike projection screens used in meeting room
16、s, schools or sports bars, home cinema screens should display a projected image without themselves becoming a noticeable part of the viewing environment. It should be noted that there is a significant difference between a dedicated theater and a multi-purpose media room. By definition, a dedicated t
17、heater is designed for only one purpose: watching movies and television. In contrast, a multi-purpose media room is designed not only for watching movies and television but also as a space used for entertainment. Although a properly completed home theater provides the best quality video experience,
18、many principles within this document are relevant to all levels of video. Thus, whether completing the ultimate home cinema or a setting up a simple flat panel on a wall, utilizing these principles can enhance the viewers experience. CEA/CEDIA-CEB23-A 3 Contents 1. Introduction . 4 2. References 4 2
19、.1 Informative Reference List 4 2.2 Informative Reference Acquisition . 4 3. Compliance Notation . 5 4. Acronyms . 6 5. Conversions . 6 6. Definitions . 7 7. Optimizing Room Layout Phone 800-854-7179; Fax 303-397-2740; Internet http:/; Email CEDIA standards, bulletins, and other documents: CEDIA He
20、adquarters, 7150 Winton Drive Suite 300, Indianapolis, IN 40268 Phone 800-669-5329; Fax 311-735-4012 Email:TechCouncilcedia.org; Internet Commission International De Leclairage (International Commission on Illumination) CIE Central Bureau Kegelgasse 27 A-1030 Vienna, Austria Phone +43 1 714 31 87 0
21、; Fax +43 714 31 87 18 Email ciecbcie.co.at Internet www.cie.co.at Digital Cinema Initiatives, LLC, 6834 Hollywood Blvd, Suite 500, Hollywood, CA 90028; Phone: 323-769-2881; Fax: 323-769-2895; Email: Internet: http:/ ITU standards: ITU, Sales and Marketing Division, Place des Nations, CH-1211 Geneva
22、 20, Switzerland. Phone +41 22 730 6141 Fax +41 22 730 5194 Email salesitu.in Internet: www.itu.int University of California, Department of Electrical Engineering and Computer Sciences Computer Sciences Division 571 Evans Hall Berkeley, CA 94720 Phone (510) 642-3773 Internet http:/www.eecs.berkeley.
23、edu/ 3. Compliance Notation “Shall” and “must” denote mandatory provisions and are not used in this bulletin. “Should” denotes a provision that is recommended but not mandatory. “May” denotes a feature whose presence does not preclude compliance, and implementation of which is optional. “Optional” d
24、enotes items that may or may not be present in a compliant device. CEA/CEDIA-CEB23-A 6 4. Acronyms ASID American Society of Interior Designers AVR Audio Video Receiver CEA Consumer Electronics Association CEDIA Custom Electronic Design low chroma are olive green, gray, and black. Sometimes the color
25、 elements are referred to as LCH, lightness, chroma, and hue or saturation. Contrast ratio Ratio between peak white level and the darkest black level produced by an imaging device. DVI (Digital Video Interface) A high-bandwidth video connection that carries digitized RGB picture information and can
26、support copy-protection methods. The DVI specification allows for the presentation device and display device to agree on an optimal picture size and resolution to ensure the highest quality picture automatically. An industry consortium, the Digital Display Working Group (DDWG), developed the copy pr
27、otection capability. DVI does not carry an audio signal. HDCP (High-bandwidth Digital Content Protection) A form of digital rights management developed by Intel Corporation to protect digital entertainment content across the DVI/HDMI interface. The HDCP specification provides a method for transmitti
28、ng and receiving digital entertainment content to DVI/HDMI-compliant digital displays. HDMI (High-Definition Multimedia Interface) The de facto worldwide all-digital interface standard for the consumer electronics and personal computer markets developed by Hitachi, Panasonic Corporation, Philips, Si
29、licon Image, Sony, Thomson and Toshiba. It combines uncompressed high-definition video, multi-channel audio and data in a digital interface to provide crystal-clear digital quality over a single cable. IRE A unit of measurement based on the voltage provided from the luminance and sync of a component
30、 video signal. 140 IRE is equal to the entire voltage of the signal where 100 IRE is for luminance and the remaining 40 IRE is used for video sync. Lumen International (SI) unit of luminous quantity of light that equals the amount of light spread over one square foot of surface by one candles power
31、when all parts of the surface are exactly one foot from the light source. Luminance The method that measures the amount of light being emitted or reflected off a particular surface. Gamma Power-law relationship between the electrical stimulus and the resulting light output from an imaging device. RG
32、BHV An analog video signal that uses additive color of Red, Blue, and Green with separate channels for both horizontal and vertical. RAID (Redundant Array of Inexpensive Disks) A disk configuration designed to reduce the probability of losing critical information due to a hard disk failure. There ar
33、e several RAID configurations such as RAID-0, RAID-1, and RAID-5. Screen Gain The amount of increased light reflected off a surface as compared to a piece of magnesium carbonate (lambertian diffuser). CEA/CEDIA-CEB23-A 8 7. Optimizing Room Layout compression style fittings are recommended. In order
34、to maintain signal integrity, the use of F-type to BNC adaptors is discouraged. CEA/CEDIA-CEB23-A 15 7.5.1 Cable Lengths For all cables there is a suggested maximum cable length in order to maintain maximum picture quality and resolution. For best results there should be less than 1dB of attenuation
35、 with a maximum acceptable signal loss of 3dB. For digital cable solutions, such as HDMI, the cable length should be of a length that is short enough to minimize the possibility of data collisions and drop of signal (cliff effect). On longer cable runs, be it analog or digital, extenders or baluns s
36、hould increase the acceptable distance before image degradation. Although these solutions work very well, one should always be sure to design a system that has the smallest impact on the noise floor as possible. 7.5.2 Digital Signal Path Interoperability Testing Digital interconnections should be te
37、sted for correct interoperability and performance using appropriate test equipment. Without proper testing, system failures, minor to major, have been noted. This compliance testing should include but not be limited to digital rights management and digital handshake, color space, resolution, ITU sig
38、nal levels, refresh rates, color bit depth, device control, 861 timing, loss of signal, lip synch errors, luma and chroma resolution. 7.5.3 Installation, Maintenance & upgrade considerations For all installations it is recommended that adequate strain relief is provided for all cable interconnects.
39、This is even more important for HDMI and DVI connections, especially due to the friction based HDMI interconnect. Within the installation, all wires should be neatly labeled and secured with Velcro when possible. The technician should avoid securing using zip-ties or other mechanical fasteners too t
40、ightly as this can alter the shape and degrade the performance of the cable. For installations where there is no access to the back of the equipment, a service loop is recommended for all equipment. When utilizing service loops, it is a very good idea to secure the cables of the same device to each
41、other using Velcro or another mechanical fastener to aide in removal of equipment during service. As with most electronics, it is recommended that the system have a periodic maintenance schedule. To do so the projector and other equipment should be designed with an ease of access in mind. Since curr
42、ent technology for front projectors relies on a lamp, it is a good idea for the client to always have a spare lamp available. If the clients lamp wears out, then an additional new back-up lamp should be ordered at the time of replacement. After installation of the new lamp, it is suggested to run th
43、e projector for 30 60 minutes before taking projector measurements. The new projector lamp should measure within 5% of the original lamp output. The image with a 100 IRE raster should be measured at the primary viewing position and deliver a minimum of 28 foot lamberts 3 foot lamberts with conventio
44、nal lamps, which should insure a minimum of 14 foot lamberts throughout the duration of the useful life of the lamp. Projectors with light sources that do not lose light output over time should measure at least 14 foot lamberts using the same method. Once the replacement lamp is in place and measure
45、d it is critical that the measurements are recorded onto the maintenance log. This should help track any potential trends if issues with the projector arise. 7.5.3 Future Uses To the extent possible, all components feeding signals to the theater should be installed with future growth in mind. In par
46、ticular, it is recommended that a minimum 1.5” flexible conduit is CEA/CEDIA-CEB23-A 16 run from the head-end to the projector without the existing cables inside. It is also advisable that an accessible Ethernet connection is located near the head-end or equipment location to allow the ease of firmw
47、are upgrades. (Be sure to check state and local codes about codes and statutes running conduit). Be sure to know and understand National Electric Code conduit fill requirements (typically 40%). Any upgrades or changes to the system should be notated on an “as-built” document. 7.5.4 Media Servers For
48、 clients using hard-drive based media servers for storage of their movies, a redundant back-up, such as a RAID-5 storage appliance, is advisable. Offsite backup is preferred. Media servers should have the same performance capabilities and meet all standards consistent with source components. 7.5.5 R
49、ack/Cabinet As with cables and connectors, the rack or cabinet should be designed with future growth in mind when possible. This space can also provide a convenient location for storage of all system documentation, including original manuals, as well as replacement lamps, original system remote controls, replacement filters, cleaning supplies, and extra batteries. 8. Image Performance Objectives & Specifications As noted, a high-performance theater should be at least as visually dynami
