Data Recording and Transmission: Part 25 - Encryption Strategies November 4^th 2020 - 09:00 AM

As in all systems where there are opposed ideologies, there is a kind of cold war in which advances on one side need to be balanced by advances on the other. In encryption, the availability of increased computing power at low cost made it easier to break codes, but it…

Data Recording and Transmission: Part 24 - Message Integrity October 5^th 2020 - 09:00 AM

Once upon a time, the cause of data corruption would be accidental. A dropout on a tape or interference picked up on a cable would damage a few bits. Error correction was designed to deal with that.

The Sponsors Perspective: SpycerNode Harnesses High Performance Computing September 29^th 2020 - 09:00 AM

In 2018, Rohde & Schwarz announced a new multi-user shared access storage system called SpycerNode. It offers a radically different approach to coping with broadcast & media storage requirements. In this article, we take a closer look to see how its approach differs and where this might add value to broadcasters, con…

The Sponsors Perspective: Storage - How To Solve 5G’s Biggest Challenge September 22^nd 2020 - 09:00 AM

The arrival of 5G brings both opportunities and challenges to communications, media and entertainment companies, as well as the original equipment manufacturers (OEMs) working to support them.

Data Recording and Transmission: Part 23 - Delivering Data September 2^nd 2020 - 09:00 AM

The requirements for data transmission have changed out of all recognition since the early days of computing where the goal was simply to make something that worked. Today that’s the easy part.

Data Recording and Transmission: Part 22 - Reed Solomon Codes August 5^th 2020 - 09:00 AM

The Reed Solomon codes are defined by what the decoder expects to see and the encoder has to be configured to suit that.

Data Recording and Transmission: Part 21 - Reed-Solomon Error Correcting Codes July 8^th 2020 - 09:00 AM

The explosion in digital technology that led to Compact Discs, DVD, personal computers, digital cameras, the Internet and digital television broadcasting relies heavily on a small number of enabling technologies, one of which is the use of Reed-Solomon error correcting codes.

Data Recording and Transmission: Part 20 - Burst Errors June 2^nd 2020 - 09:00 AM

The first burst error correcting code was the Fire Code, which was once widely used on hard disk drives. Here we look at how it works and how it was used.

Data Recording and Transmission: Part 19 - Cyclic Redundancy Checks May 5^th 2020 - 09:30 AM

The CRC (cyclic redundancy check) was primarily an error detector, but it did allow some early error correction systems to be implemented. There are many different CRCs but they all work in much the same way, which is that the data to be protected are divided by the CRC polynomial.…

Data Recording and Transmission: Part 18 - Modulo Counting April 6^th 2020 - 09:00 AM

The mathematics of finite fields and sequences seems to be a long way from everyday life, but it happens in the background every time we use a computer and without it, an explanation of modern error correction cannot be given.

Protected Transport Bolsters Signal Monitoring For Live Broadcasts Over IP November 25^th 2020 - 09:00 AM

Any experienced master control operator or quality control manager will tell you that monitoring hundreds of feeds requires that each individual channel is delivered reliably, on time and to the exact location it was meant to go. When these signals are distributed over the public internet, strict protocols must be…

100GbE Switching And Transport Moves To The Forefront Of Contribution Landscape November 24^th 2020 - 09:00 AM

There was a time, not too long ago, when 100 Gigabit Ethernet (100GbE) IP switching was only considered for IT data centers moving large amounts of financial and military data. With the growth of media and the urgent need for remotely controlled production infrastructures, 100 Gb/s is no longer a far…

Computer Security: Part 1 - What Is Computer Security? November 12^th 2020 - 09:00 AM

Computer security is always a hot topic, but what do we mean by security and why do systems seem to be ever vulnerable. Comparing hardware to software helps understand vulnerabilities in software security.

The Sponsors Perspective: Capturing Immersive Audio November 10^th 2020 - 09:00 AM

Strategies for capturing immersive audio for scene and object-based audio.

Agile Monitoring Supports Growth Of OTT November 5^th 2020 - 09:30 AM

To maintain high quality of experience for their customers, content providers need a way to monitor hundreds—sometimes thousands—of channels without compromising real-time error detection. In most cases, the immense scale of their service offerings makes continual visual monitoring of all streams physically impossible and error prone. To meet thi…

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