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A video wall consists of multiple computer monitors, video projectors, or television sets tiled together contiguously or overlapped in order to form one large screen. Typical display technologies include LCD panels, LED arrays, DLP tiles, and rear projection screens. Simple video walls can be driven from multi-monitor video cards, however more complex arrangements may require →

I just found out some interesting reverse-engineering hack related to Helsinki bus stop displays. Tapping Data From Radio-Controlled Bus Stop Displays tells that a couple of weeks ago hacker Oona Räisänen told about finding a 16 kbps data stream on FM broadcast frequencies, and her suspicion was that it’s being used by the public transit →

The Wolfram Language and Mathematica on Raspberry Pi, for free article tells that The Raspberry Pi Foundation has announced a partnership with Wolfram Research to bundle a free copy of Mathematica and the Wolfram Language into future Raspbian images. Future Raspbian images will ship with the Wolfram Language and Mathematica by default; existing users can →

Microsoft released the Xbox One today. Also a recent research says that Game Play Has No Negative Impact on Kids, UK Study Finds: A massive study of some 11,000 youngsters in Britain has found that playing video games, even as early as five years old, does not lead to later behavior problems. So there is →

The trend in professional audio systems seems to be that audio signals are move and more moving from balanced analogue interfaces and proprietary digital interfaces to Ethernet networking. There are many good reasons for that, which I am not going through in this post, for more information on reasons for transition look my earlier postings →

I have written earlier about problems in banking security and credit card security issues. But what about some other banking issues? Banking is Broken: A Financial Revolution is Coming article tells that a trio of startups are seeking to change the way we manage our money, by focusing on the customers traditional banks are ignoring. →

Linux Journal has published several interesting articles on Linux networking. Here are some of the most interesting of them. Queueing in the Linux Network Stack tells that packet queues are a core component of any network stack or device. They allow for asynchronous modules to communicate, increase performance and have the side effect of impacting →

Finnish Internet Users are Most Avid Consumers of Online News article says that news and information sites capture a large proportion of the European on-line audience with 8 in 10 Internet users accessing one of these sites in September 2013. 338 million people visited a news or information website via a desktop or laptop during →

At AudioVisual 13 there were some equipment teared down to point you can see what in inside them. Here are some. First picture shows what is inside a moving light. Here is a look inside a professional high power Barco HDX video projector. As you can see there are some similarities to what is inside →