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Ask the experts on cable

Digital, server-based systems in production, post-production, news gathering and playout bring increased efficiencies and productivity. Nonlinear editing and news gathering allow users to access the same material across a data network. Digits are here and are now dictating the form of cables and connectors, from camera through to playout. What qual...

Submitted by Bob Pank#

Published 01 May 2010

Eye to Eye: Whats even newer in test and measurement 2010

A year is a long time in broadcast test & measurement, which is just as well because that is when this column previously focused on it. Given the current push to establish 3D as a permanent feature of the broadcast landscape, one might reasonably expect T&M kit designers to be heading along the same road. Hamlet and Omnitek certainly are but it see...

Submitted by Bob Pank#

Published 01 April 2010

A Guide to Testing IPTV: Technologies and Challenges Par...

Throughout this article series we have seen that IPTV network operators face many challenges and explained that effective test and measurement is key to overcoming these challenges. The majority of IPTV networks are still in the early stages of development and operators are therefore primarily concerned with optimising QoS parameters in order to ge...

Submitted by Dennis Lennie

Published 01 December 2009

A Guide to Testing IPTV: Technologies and Challenges Par...

Testing IPTV NetworksThe Technology LifecycleThe deployment of new technologies tends to follow a similar lifecycle that begins with early research, development and standardisation and ends with full deployment and service management. The lifecycle diagram illustrated in Figure 5 shows a number of different technologies moving through the design an...

Submitted by Dennis Lennie

Published 01 November 2009

Eye to Eye New post-production kit at IBC 2009

This alphabetical overview of new video and film post-production kit at IBC 2009 was going to start with Apple but the company pulled out of both NAB and IBC in 2008. I begin instead with Avid which has certified its Media Composer, NewsCutter, Symphony and DS software to run on the new HP Z series Workstations – the HP Z800 and HP Z400. Avid custo...

Submitted by Dennis Lennie

Published 01 October 2009

A Guide to Testing IPTV: Technologies and Challenges Par...

Before we can go on to look at testing IPTV systems, it would be useful to provide an overview of the technologies involved. Network ArchitecturesFigure 3 shows an example of a typical IP network structure. Content is first delivered into the video headend; this can be done in a variety of formats over a number of different delivery mechanisms (e.g...

Submitted by Dennis Lennie

Published 01 October 2009

Converting for displays

Behind every great display there’s a great converter. Ever since television started to go digital in studios and post production, the number of digital formats has grown. For a while the television standards bodies got a grip and succeeded in pulling nearly everyone along the ‘SDI’ track; now itself expanded to HD-SDI and 3G-SDI – carrying a multit...

Submitted by Dennis Lennie

Published 01 September 2009

Ask the experts. Eye & Jitter

Why should TV broadcast engineers be interested in adding Eye and Jitter measurement to their T & M facilities?The call for Eye and Jitter as part of overall video test and measurement lies in the widespread adoption of serial digital interface (SDI) standards for broadcast. Unlike analog transmission in which the image quality gradually degrades a...

Submitted by Dennis Lennie

Published 01 September 2009

Tv-bay Digital Signage Special Report IBC2009

Sign of the times at IBCDigital signage – the use of video screens or projectors to create dynamic information and advertising displays – has moved on rapidly from technological showcase and niche market to become a mainstream media. Recent research by Multimedia Intelligence predicts a doubling of the market by 2012, with 2.3 million displays in u...

Submitted by Dennis Lennie

Published 01 September 2009

Guide to Testing IPTV Technologies and Challenges Part 2

In Part 1 of this series we gave a background to IPTV and explained that the two-way nature of IPTV networks offers many advantages over traditional broadcast technologies, but also presents a number of technical challenges. In this part we will begin to examine some of the challenges faced by IPTV service providers, and the importance of Quality o...

Submitted by Dennis Lennie

Published 01 September 2009

Modern multiviewers

The monitoring of multiple video sources has been simplified and costs greatly reduced by the use of multiviewers. These make use of two principle technologies: large high-resolution video screens and the real-time resizing of video. The market is now well developed and provides a wide choice of specifications such as the number of inputs and their...

Submitted by Dennis Lennie

Published 01 September 2009

OLED vs LCD

There was a rapid change in image display technology within the last few years. Nowadays CRTs are history, flatpanels substitute them everywhere. Even in the broadcast industry. Different technologies dominate the market;Plasma - a self-lighting principle - mostly used for large screens;TFT-LCDs - a concept that always needs a backlight - most comm...

Submitted by Dennis Lennie

Published 01 September 2009

Ask the Experts on the Topic of Distribution and Delivery

NAB 2009 was fascinating with respect to how many customers were looking for solutions and insisting that manufacturers work together to provide solutions, as opposed to just supplying products. File-based workflows were the talk of the town (well, at least the talk of NAB) and there certainly continues to be significant discussion and implementati...

Submitted by Dennis Lennie

Published 01 August 2009

Eye to eye on Broadcast content management 2009

Content asset management is one of the fastest developing areas of the entire broadcast business. Its advantages over old-style film and videotape libraries are so widely recognised that they hardly need repeating. NAB provided an opportunity to look at new advances from some of the key players. AP introduced a new module for its ENPS 6.0 and 7.0....

Submitted by Dennis Lennie

Published 01 August 2009

SRW-5800 Training

“Hi Dave, how was the course?” This is the sort of greeting you come to expect from fellow engineers when you have recently attended a training course. Engineers are notorious for having no “small talk”, probably because our minds are usually concerned with things like volts, amps and ohms… and why that VTR always works on the bench, but fails as s...

Submitted by Dennis Lennie

Published 01 July 2009