Bibliothèque d'articles


Environmental Considerations and Human Factors for Videowall Design

Environmental Considerations and Human Factors for Videowall Design The ability to present clear, high quality imagery from multiple sources and at large sizes makes videowalls valuable for maintaining situational awareness, as mission-critical information is presented in a working environment such as a control center...  En savoir plus

Font Size and Legibility for Videowall Content

Legibility is very important for any videowall application with sources that include alphanumeric text. Viewers should be able to easily read text at all intended viewing distances without eyestrain. Delivering adequately sized text can be accomplished by scaling up or enlarging the source to make fonts legible, or...  En savoir plus

Vidéo numérique : êtes-vous conforme 4:2:2 ?

Dans l'industrie télévisuelle, le maintien de la qualité originale d'un événement analogique est primordial. Cet enjeu a suffi pour entraîner le développement et l'adoption d'un format d'enregistrement numérique répandu, désigné par diverses appellations : la vidéo composante numérique 4:2:2, le CCIR 601,le...  En savoir plus

Plenum-Rated — More Than Just Cables and Speakers

Many of us automatically think of cable or speakers when we hear the word "plenum". It is generally known that Extron has offered plenum-rated cable for years; however, many are unaware that we offer other types of plenum-rated products as well. These products are designed to provide convenience and installation flexibility...  En savoir plus

AV Pro : l'importance de la qualité du câble HDMI

S'il y a bien une idée reçue particulièrement répandue sur le net, c'est que tous les câbles HDMI sont identiques. En regardant les extrémités de deux câbles placés côte à côte, comment distinguer un câble bon marché d'un câble coûtant deux, trois, voire dix fois plus cher ? Je pense qu'il est juste... (Connexion requise: ) En savoir plus

Understanding the Control Project Timeline

This control project timeline presents a best-case scenario for a well-organized AV installation. It proposes a systematic, logical workflow that integrators and project managers can reference during a project, or, ideally, prior to a project’s start. Proposal The proposal phase of the project encompasses the initial...  En savoir plus

HD-SDI, HDMI, and Tempus Fugit

HD-SDI (high definition serial digital interface) and HDMI (high definition multimedia interface) version 1.3 are receiving considerable attention these days. "These days" really moved ahead rapidly now that I recall writing in this column on HD-SDI just one year ago. And, exactly two years ago the topic was DVI and HDMI...  En savoir plus

VoIP

DMP 128 Plus C V and DMP 128 Plus C V AT models include up to eight VoIP lines, with wideband codec support, that can be configured as individual extensions or with multiple call appearance channels to support local conferencing applications. Compatible with select VoIP systems, any V model of the DMP 128 Plus Series can...  En savoir plus

Choisir les scalers les mieux adaptés

Les systèmes audiovisuels intègrent généralement plusieurs sources d'entrée, telles que des ordinateurs, des équipements de vidéoconférence, des caméras, et des appareils mobiles, offrant des résolutions et des formats de signaux vidéo variés. Il est cependant fréquent qu'un appareil d'affichage ne soit pas en mesure...  En savoir plus

Choisir les processeurs de signaux les mieux adaptés

Les processeurs de signaux altèrent et gèrent un signal de diverses manières. Il peut s'agir de la conversion de signaux vidéo composite en signaux S-Video, de l'amplification ou du réglage d'un signal, ou du reformatage intégral d'un signal. Les processeurs de signaux peuvent améliorer la qualité de l'image,...  En savoir plus

Calculateur de débit de données 4K

Le calculateur de débit de données 4K est un outil en ligne qui vous assiste durant les phases de conception, d'installation, et de configuration d'un système. Ce calculateur simple vous permet d'identifier rapidement le débit de données numériques maximal devant être supporté par des câbles, des scalers, ou d'autres...  En savoir plus

AV Pro : l'importance de la qualité du câble HDMI

S'il y a bien une idée reçue particulièrement répandue sur le net, c'est que tous les câbles HDMI sont identiques. En regardant les extrémités de deux câbles placés côte à côte, comment distinguer un câble bon marché d'un câble coûtant deux, trois, voire dix fois plus cher ? Je pense qu'il est juste... (Connexion requise: ) En savoir plus

Pratiques recommandées en conception numérique - Intégrité du signal

Cet article porte essentiellement sur l'intégrité du signal, l'un des trois composants essentiels dans l'architecture d'un système numérique. Les deux autres composants, d'égale importance, sont la protection des contenus et la gestion de la résolution. L'intégrité du signal est liée au maintien des formes d'onde...  En savoir plus

HDMI: The Short and the Long of It

HDMI, or High Definition Multimedia Interface, is a digital AV interface that supports high resolution computer-video and HDTV as well as multiple channels of audio on a single cable. It is prevalent in flat-panel displays and projectors as well as DVD players, Blu-ray Disc players, and even some laptops and PC graphics...  En savoir plus

Le DVI et l'HDMI en long, en large et en travers

La majorité des câbles d'entrée DVI adaptés aux écrans d'ordinateurs mesurent deux mètres, comme le câble d'entrée VGA analogique standard. Cette longueur est pourtant bien trop courte pour la conception de systèmes. Pour que des interfaces numériques audiovisuelles deviennent courantes, il ne sera plus question d'effectuer...  En savoir plus

Utiliser l'EDID Manager Extron pour identifier et résoudre les problèmes de connectivité des displays

L'échange de données EDID (Extended Display Identification Data) est un moyen standardisé permettant à un display de communiquer ses capacités, telles que sa résolution native, à un appareil source connecté, qui génère par la suite les caractéristiques vidéo nécessaires pour répondre aux besoins du display. Lorsqu'il...  En savoir plus

HD-SDI, HDMI, and Tempus Fugit

HD-SDI (high definition serial digital interface) and HDMI (high definition multimedia interface) version 1.3 are receiving considerable attention these days. "These days" really moved ahead rapidly now that I recall writing in this column on HD-SDI just one year ago. And, exactly two years ago the topic was DVI and HDMI...  En savoir plus

L'HD-SDI dépasse les frontières du petit écran

Il semble que le concept populaire de vidéo numérique, au sein du grand public, soit apparu avec la connexion du DVI à un moniteur informatique. Bien évidemment, le format DV pour les caméras vidéo grand public est plus ancien, même si pour beaucoup, il ne ressemblait pas à de la vidéo numérique. Pourquoi ? Je...  En savoir plus

Vidéo numérique : êtes-vous conforme 4:2:2 ?

Dans l'industrie télévisuelle, le maintien de la qualité originale d'un événement analogique est primordial. Cet enjeu a suffi pour entraîner le développement et l'adoption d'un format d'enregistrement numérique répandu, désigné par diverses appellations : la vidéo composante numérique 4:2:2, le CCIR 601,le...  En savoir plus

HDMI 2.0 : vue d'ensemble de la spécification et questions/réponses

L'HDMI 2.0 a été développé par l'HDMI Forum afin d'inclure de nouvelles capacités à cette technologie largement utilisée. Publiée en septembre 2013, la spécification inclut le support d'une bande passante plus importante atteignant 18 Gb/s, de résolutions atteignant le 4K à 60 Hz, de la diffusion...  En savoir plus

Calculating ROI

One of the key factors used in determining whether or not to purchase new classroom technology is a calculation of Return on Investment, or ROI. While there are many factors to consider, ROI generally falls into two main categories: hard returns, which can be demonstrated in financial terms, and soft returns that are less...  En savoir plus

Choisir les bonnes méthodes de contrôle

Les exigences de contrôle d'un appareil sont communément déterminées par le fabricant de l'appareil. Les appareils audiovisuels proviennent de divers fabricants et l'accès aux fonctions respectives de contrôle peut varier considérablement.  En savoir plus

College Achieves New Level of Student Service with Extron TouchLink-Based Control Systems

Montgomery County Community College in Blue Bell, Pennsylvania, recently upgraded its primary student services building, College Hall. School officials wanted to use AV technology to streamline student services for all students. With help from Fitch Electronics, the school selected Extron equipment for key functions and...  En savoir plus

Making Choices: Control System Size and Scope

Proper design is a balancing act. Designers must evaluate the goals and needs of the client and weigh them against the client’s budgetary constraints.  En savoir plus

Signaux et infrastructure de communication

Après avoir identifié l'équipement à contrôler et les méthodes de contrôle, il convient maintenant de regarder de plus près les signaux et l'infrastructure de contrôle, nécessaires pour transmettre ces signaux depuis le processeur de contrôle vers l'appareil contrôlé.  En savoir plus

TouchLink GUI Templates and Beyond

Infocomm 2009 brought the introduction of Extron’s TouchLink® product line, the first fully configurable touchscreen interface for the professional AV market. TouchLink was designed from the ground up to enable development and deployment of the most typical AV control installations including room types such as a single...  En savoir plus

Understanding the Control Project Timeline

This control project timeline presents a best-case scenario for a well-organized AV installation. It proposes a systematic, logical workflow that integrators and project managers can reference during a project, or, ideally, prior to a project’s start. Proposal The proposal phase of the project encompasses the initial...  En savoir plus

VoIP

DMP 128 Plus C V and DMP 128 Plus C V AT models include up to eight VoIP lines, with wideband codec support, that can be configured as individual extensions or with multiple call appearance channels to support local conferencing applications. Compatible with select VoIP systems, any V model of the DMP 128 Plus Series can...  En savoir plus

Ceiling Speaker Calculator

The Ceiling Speaker Calculator is a convenient online tool and a valuable resource for estimating the number of ceiling speakers needed for a sound reinforcement system in a room or listening area. Simply enter some basic information including room dimensions, the Extron ceiling speaker model, the type of...  En savoir plus

Class D Amplifiers – Not 'Just Audio'

Yes, I'm a video guy. You've probably heard one of us (not me) disrespectfully downplay the ubiquitous field of aural engineering as "it's just audio". This article is about audio, but don't energize your shields just yet. I'm on your side... veteran project manager of an audio system having CD quality signal-to-noise...  En savoir plus

Design Mecca Overcomes AV Hurdles

The American Institute of Architects, headquartered in Washington, DC, was founded in 1857, and today has nearly 300 state and local chapters in the U.S. and around the world. The AIA strives to meet the needs and interests of the nation’s architects and the public they serve by developing public awareness of the value of architecture and the importance of good design. (Connexion requise: ) En savoir plus

Extron's Patented Ripple Steering Class D Audio Amplifier Technology

Class D Audio Power Amplifiers offer the highest efficiency possible, resulting in cooler running, longer lasting products. They are not without their drawbacks, however, one of these typically being increased EMI - Electromagnetic Interference. Extron's proprietary Ripple Steering technology greatly improves the EMI performance...  En savoir plus

Plenum-Rated — More Than Just Cables and Speakers

Many of us automatically think of cable or speakers when we hear the word "plenum". It is generally known that Extron has offered plenum-rated cable for years; however, many are unaware that we offer other types of plenum-rated products as well. These products are designed to provide convenience and installation flexibility...  En savoir plus

The Mysterious Loudness Control: What Does It Do?

The first really decent stereo audio system I owned had a pushbutton on the front panel called "loudness." I pushed it. I decided the audio sounded better so I left it pushed in; never changed it. OK, occasionally I would push it to the off position; nope, sounded better on. Thinking back, I really didn't care what it...  En savoir plus

Choisir la solution H.264 la mieux adaptée

Choisir la solution H.264 la mieux adaptée Qu'est-ce que l'H.264 ? L'H.264 est un standard de compression vidéo, également connu sous le nom de MPEG-4 Part 10 ou MPEG-4 AVC. Il a été développé par le Video Coding Experts Group (VCEG) de l'UIT-T en association avec le Moving Picture Experts...  En savoir plus

Intégration de produits audiovisuels sur les réseaux IP : déjouer les pièges les plus fréquents

Les avancées technologiques dans l'audiovisuel ont fait évolué la manière dont l'audio, la vidéo, et les données « coexistent » entre des sources, des écrans, et des systèmes de contrôle. L'industrie audiovisuelle transite aujourd'hui vers une nouvelle infrastructure de transmission numérique basée sur le DVI,... (Connexion requise: ) En savoir plus

Selecting a Streaming Codec

Every day, video over IP technology reaches farther into our professional and personal lives. As networks expand and streaming technologies mature, we find ourselves with greater access to information and an improved ability to communicate using video... (Connexion requise: ) En savoir plus

VN-Matrix Combines Real and Virtual Training Cross Country for AFRL

The Air Force Research Laboratory - AFRL faced several significant technical and operational challenges when it set out to produce a real-time, real-world demonstration of a training simulation system....  En savoir plus

Eyes on the Roads

The Borough Councils of Greater London have a duty to maintain safe roadways that will support efficient transportation and the economic well-being of the metropolitan area. Residents of Greater London are all too familiar with seeing road work projects that extend longer than their timeframe expectations... (Connexion requise: ) En savoir plus

Training the Future Doctors of British Columbia

Early in 2002, British Columbia was faced with a critical shortage of doctors to serve its approximately 4.6 million citizens. Additionally, the northern, southern, and island regions had a difficult time enticing new doctors to set up practices beyond Vancouver’s metropolitan area. Two primary factors contributed to this... (Connexion requise: ) En savoir plus

A Fiber Optic Connector Primer

Optical fiber transmission of AV signals has come of age and it's time to take another step along this new, adventurous road. A fiber solution may sound like a great idea for those challenging long-haul or highly secure applications, and then reality sets in. The fiber transmission solution is still a serious investment...  En savoir plus

Campus Technology

Universities are centers of research as well as institutions for higher learning. Campuses feature multiple buildings with classrooms, offices, ....  En savoir plus

Courtroom of the Future

The Courtroom of the Future relies on a fiber infrastructure to ensure that future upgrades to the AV system can use the existing cabling. It provides a...  En savoir plus

Digital Signage

This pharmaceutical building has public lobbies for customer access and general admittance to the site. Employee lounges and cafeterias are ...  En savoir plus

Fiber Optic Cables in AV Systems

The combination of light and glass presents some unique properties that give AV professionals powerful tools in common AV applications. A fiber optic cable can be used to send high resolution video, audio, and control signals on a single fiber over 30 km (18.75 miles), and avoids the risk of signal loss or degradation,...  En savoir plus

Fiber Optic Frequently Asked Questions

The following provides you with questions and answers about Extron Fiber Optic products: What is optical fiber? What is multimode fiber? What is singlemode fiber? How is an AV signal transmitted down a fiber? What is a light-emitting diode? What is a laser diode? What is a VCSEL? What is a photodetector? What...  En savoir plus

Fiber Optic Transmission in AV Comes of Age

Folks, the good ol' days are here right now. More technical solutions are available for audiovisual systems designers in both analog and digital equipment than ever before. One of the most exciting new toys for signal distribution is RGBHV digital fiber optic transmission. Most currently installed fiber transmission...  En savoir plus

Knowledge Wall

A knowledge wall is the center of aggregated information used for monitoring and analyzing to make critical decisions related to security, emergency services...  En savoir plus

Multiplexing AV Signals in Fiber Optic Systems

Multiplexing Signals in Fiber Optic Systems TDM combines multiple digital signals into a single serial digital bit stream. A specialized circuit, called a serializer, allocates parallel input streams into time slots in the serial output. In a fiber optic system, the serial bit stream is transmitted as a single wavelength...  En savoir plus

USB Switching in AV Environments

USB is a popular standard that has been around since 1995. Its evolution has extended to the point where each of us utilizes this interface on a daily basis. USB ports are standard fixtures on computers and laptops with further extension recently onto other peripheral devices ....  En savoir plus

Pratiques recommandées en conception numérique - Intégrité du signal

Cet article porte essentiellement sur l'intégrité du signal, l'un des trois composants essentiels dans l'architecture d'un système numérique. Les deux autres composants, d'égale importance, sont la protection des contenus et la gestion de la résolution. L'intégrité du signal est liée au maintien des formes d'onde...  En savoir plus

HDMI 2.0 : vue d'ensemble de la spécification et questions/réponses

L'HDMI 2.0 a été développé par l'HDMI Forum afin d'inclure de nouvelles capacités à cette technologie largement utilisée. Publiée en septembre 2013, la spécification inclut le support d'une bande passante plus importante atteignant 18 Gb/s, de résolutions atteignant le 4K à 60 Hz, de la diffusion...  En savoir plus

Extron XTP Systems Streamline AV System Designs

Any successful system design requires careful consideration for managing and distributing video, audio, and control signals. It is also essential to plan for provisioning data and power, to ensure that AV devices can be integrated onto a LAN for system control or Internet access, and that the electrical infrastructure... (Connexion requise: ) En savoir plus

Integration Opportunities with 4K Displays

Displays with 4K, or roughly 4K×2K resolution provide a solution for applications requiring a greater number of pixels on large screens. In 2005, the first 4K projection displays were introduced and began to be integrated into digital cinema, simulation, defense, medical, entertainment, and other environments. Since then,... (Connexion requise: ) En savoir plus

Choisir les scalers les mieux adaptés

Les systèmes audiovisuels intègrent généralement plusieurs sources d'entrée, telles que des ordinateurs, des équipements de vidéoconférence, des caméras, et des appareils mobiles, offrant des résolutions et des formats de signaux vidéo variés. Il est cependant fréquent qu'un appareil d'affichage ne soit pas en mesure...  En savoir plus

Choisir les processeurs de signaux les mieux adaptés

Les processeurs de signaux altèrent et gèrent un signal de diverses manières. Il peut s'agir de la conversion de signaux vidéo composite en signaux S-Video, de l'amplification ou du réglage d'un signal, ou du reformatage intégral d'un signal. Les processeurs de signaux peuvent améliorer la qualité de l'image,...  En savoir plus

Setting Up a Scan Converter

Properly setting up a scan converter can make all the difference in the world in respect to image quality. A little fine-tuning can make the difference between a poor image and a good image. To obtain the best image, certain adjustments should be made each time a scan converter is used in a new application. The sequence...  En savoir plus

Courtroom of the Future - System Design Solution

The Courtroom of the Future relies on a fiber infrastructure to ensure that future upgrades to the AV system can use the existing cabling. It provides a model that can be readily adapted to various applications such as municipal, county, district, or superior courts. The AV system provides a modern means of presenting...  En savoir plus

Environmental Considerations and Human Factors for Videowall Design

Environmental Considerations and Human Factors for Videowall Design The ability to present clear, high quality imagery from multiple sources and at large sizes makes videowalls valuable for maintaining situational awareness, as mission-critical information is presented in a working environment such as a control center...  En savoir plus

Font Size and Legibility for Videowall Content

Legibility is very important for any videowall application with sources that include alphanumeric text. Viewers should be able to easily read text at all intended viewing distances without eyestrain. Delivering adequately sized text can be accomplished by scaling up or enlarging the source to make fonts legible, or...  En savoir plus

Videowall Processor Features

Videowall processors are available with a wide range of features and capabilities. Many of them relate to system performance, image quality, and reliability, while others can help streamline system design and integration needs targeted at specific vertical market applications. Support for these features will vary by...  En savoir plus

Videowall System Control

Videowalls are among the most complex types of AV systems to set up and configure. Most of the operational complexity is within the videowall processor and its many functions, features, and capabilities. Working with a videowall processor will be greatly simplified if an intuitive, user-friendly interface is available...  En savoir plus