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- Applications – Industries
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Category Archives: FAQ
Master your knowledge in video transport with all 5 white papers!
You will learn about:
- Live productions using IP networks
- Bridging gaps with 60 GHz wireless
- Video networking with smart devices
- “NEW” Wireless video alternatives
- Fiber optic video transmission
VidOvation is a Video Communications Company
Larry Jordan: Jim Jachetta is the Founder and President of VidOvation. For over 20 years, Jim’s been designing, integrating and delivering video, fiber optic and data communications systems and recently they’ve expanded into wireless video with some new technology being used by the NHL. Hello, Jim, welcome.
Jim Jachetta: Hi, thanks for having me. Pleasure to be here.
Larry Jordan: We are delighted to have you with us and let’s start with a really easy question. First, tell us about what VidOvation is.
Jim Jachetta: VidOvation is a video communications company. We manufacture solutions for wireless, solutions for fiber optic transmission, for webcasting, we make encoders to stream video over your corporate network or through the internet, but in a nutshell we help our clients move video from Point A to Point B and our tagline is ‘Moving video forward’, so we’re staying up to date with the latest technologies such as what we did for the National Hockey League, using 60 gigahertz transmission for uncompressed wireless video.
Larry Jordan: Let’s just take a second. We understand that you guys are in the business of moving video, but you’re one of the founders of the company. Why did you decide to start the company? What made that so intriguing to you?
Jim Jachetta: Well, I guess I have my dad to blame for that. My dad had an entrepreneurial spirit. My dad was an engineer at ABC, CBS and his longest and final stint was at NBC, so he worked at 30 Rock for about 12 years before starting a company called MultiDyne and, as kids, my brother and I, we always worked for our dad so junior high we helped stuff circuit boards and build a lot of his audio visual equipment, so it’s in our DNA and my dad was a great problem solver and my brother and I have inherited that work ethic of doing the never been done before and solving our clients’ problems or helping with their business workflow.
By Phil Hippensteel
We’re using IPTV at our school and have discovered a situation that we don’t understand. The video is delivered over a group of Ethernet switches. When we investigate the individual links, we find some links carry large amounts of traffic, while others transport no traffic at all. Can you offer a possible explanation?
Barry, Alexandria, VA
Barry, Alexandria, VA
A very likely explanation is that the switches have a loop circuit within them and the spanning tree process has automatically disabled a link. That’s not bad. In fact, it is a very necessary requirement.
The spanning tree algorithm is used with Ethernet switches to routinely remove loop circuits. If these loops weren’t removed, a single IP packet carrying video could loop endlessly while consuming valuable bandwidth. To understand essentially how spanning tree works, look at the diagram of a hypothetical network of switches. The simple hexagon with a diagonal has three loops in it: A-D-E-F-A, A-D-C-B-A, and A-B-C-D-E-F-A.
The spanning tree algorithm picks a switch, say B, to be the root of a tree that will be formed. A series of spanning tree messages is sent over the links starting from the root switch, B. These messages allow the switches to discover that a loop exists. For example, in our drawing, switch E received messages from both F and D. Therefore, E disables the link to one of them, say the one to D. In the same manner, C chooses to disable its link to D. After these two operations, the loops are eliminated and the entire structure forms a tree. Now every switch is connected to every other switch through exactly one path. Occasionally, technicians disable the spanning tree operation to reduce traffic, but that is almost always a bad idea.
Phil Hippensteel, Ph.D., has spent more than forty years in higher education and now teaches at Penn State Harrisburg.
Taking the Leap from Copper to the Network
Technology changes are inevitable, and you can easily get lost in options, wondering which new gadget or behavior is a trend and which is here to stay.
Dirac is versatile. It is difficult to think of an application that cannot be covered. We suggest you try Dirac for: Continue reading