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Archive for February, 2010

MeeGo Linux

Monday, February 15th, 2010

According to news around Internet Intel and Nokia are combining their respective Linux operating environments to power future smartphones and tablets. The Intel-Nokia collaboration began in earnest in June when the two companies announced the beginning of a “long-term relationship,” focusing on developing new chip architectures, software, and a new class of Intel-based mobile computing devices. The goal for MeeGo is to put more flesh on the bones of last year’s announcement. The MeeGo software is expected to be released in the second quarter of this year and products are slated to emerge in the second half.

MeeGo project combine two disparate, unwieldy operating environments under one roof. The combined operating systems are Maemo from Nokia and Moblin from Intel. MeeGo will support both Intel and ARM processors. This means that Intel will be now sponsoring a mobile Linux distro which will have ARM as one of it’s main supported processors. The MeeGo will be hosted by the Linux Foundation as an open source project.

At today’s smartphones the biggest players are Symbian, Apple’s iPhone OS, Microsoft’s Windows Mobile, and Google’s Android. The market stress from iPhone OS and Android could have ben part of why Intel and Nokia felt it was necessary to team up. MeeGo is also targeted to devices beyond today’s mobile phones: netbooks, tablets, and televisions.

maemo_overview

Moblin

Both companies stressed that applications that run on Moblin and Maemo will run on top of MeeGo. MeeGo will use Nokia’s Qt application development environment. Using Qt, developers can write once to create applications for a variety of devices and platforms (including Symbian that Nokia also continues to use), and market them through Nokia’s Ovi Store and Intel’s AppUp Center.

MeeGo is supposed to be the result of merging Maemo and Moblin, bringing together the best pieces of those (already quite similar platforms). For example both Maemo and Moblin started off Gtk-based, using the Clutter toolkit on top of Gtk. Now both have switched over to Qt.

PCRE Cheat Sheet

Monday, February 15th, 2010

phpguru.org has a nice PCRE cheat sheet. Take a look at it if you work with PHP.

php_pcre

That cheat sheet is inspired by regex cheat sheet by ILoveJackDaniels.com that I used to use. Now that great site is known as and has a good collection of free Cheat Sheets, printable quick references for a variety of languages and web technologies.

High Speed Lightning Videos

Saturday, February 13th, 2010

Lightning Reveals Its Power in Slow Motion article on Wired has a series of videos that combines severe weather, electricity, and technology. The maker of those videos, Tom Warner, documents the powerful beauty of lightning with an array of optical and electromagnetic sensors. “Lightning is one of nature’s most spectacular phenomena,” says Warner. “I want to understand how lightning behaves.” Since 2007, Tom has used Vision Research ‘Phantom’ high-speed video cameras capable of recording lightning at up to 54,000 images per second. The camera continuously records in a looping memory buffer.

The first video and the picture below (from that video) shows a downward-propagating negatively charged, stepped leader. The lightning branches out in many different directions, causing one leader to make a connection with the ground, creating a bright return stroke.

lightning

After watching the videos it is a good idea to also read how to protect buildings and electronics against lightning damages. K1TTT on grounding and lightning protection highlights the need for single point grounding system. Check also surge suppression links and documents on ePanorama.net.

LackRack

Thursday, February 11th, 2010

This is a really neat trick I just read about. LackRack is the ultimate, low-cost, high shininess solution for your modular datacenter-in-the-living-room. Its low-cost and perfect fit are great for mounting up to 8 U of 19″ hardware, such as switches (see below), or perhaps other 19″ gear. Featuring the LACK (side table) from Ikea, the LackRack is an easy-to-implement, exact-fit datacenter building block. Installing hardware in your LackRack is easy! Screw all the screws that fit in the rack mount in the left and right leg. The table legs have just right dimensions for almost 9U of rack space for 19″ hardware.

Earlier some hifi people have built hi-fi stand made out of IKEA Lack side tables, but now the world is ready for 19″ networking equipment racks. Check LackRack home page for more information on how to build your own very cheap 19″ rack system. The page also tells that also Ikea LACK coffee table and Ikea ODDA night table have right dimensions and can be easily converted to cheap 19″ racks.

400px-LackRack

Image source: http://wiki.eth-0.nl/index.php/LackRack

Tour of the International Space Station

Thursday, February 11th, 2010

An HD Video Tour of the International Space Station is simple walkthrough of this incredible project and all its corners. This video tour of the International Space Station is an interesting video, but is has also some annoying things on it. It sometimes overuses picture in picture and superimposed images effects in the video. Just because something can be done with a video, doesn’t mean it should be done.

spacevideo2

Favicon generator

Tuesday, February 9th, 2010

I just found an useful web favicon generator on-line tool at http://www.favicon.cc/. You can paint your logo with the web tool and download when you are finished. Then just put the favicon.ico file into your webserver directory and you are ready. This on-line tools also support generating favicon from an exiting picture that you can upload to the editor (many picture formats supported). Very useful and easy to use tool. You see the icon you are editing in big size plus a preview how it will look at real size in browser address bar. Read also Wikipedia Favicon article to get the information on different ways you can use your favicon in your web pages.

favicon

High end vs. consumer electronics

Monday, February 8th, 2010

All the good ideas have been gone in high end AV industry? Why work hard for something original when you can just license it and use your brand to warrant charging huge extra for the same electronics? Are high-end brands just becoming marketing and no real engineering or quality benefits…

In earlier blog post there was information that Ayre DX-5 bluray player was a modified Oppo BDP-83 blueray player. The repackaged device with new power supply changed the price from $500 to $10000.

Now there is another similar case. Now it looks there is even less modifications.

AV Rant #163: Bacon Wrapped Vegan blog posting says that Lexicon BD-30 looks like Oppo. Audioholics article Oppo on the Inside, Lexicon on the Outside shows that inside Lexicon BD-30’s beautiful chassis there is Oppo BDP-83. The article says that according to the reps at the show, Lexicon had merely taken components of that player and tweaked them to make it their own – adding technology and making improvements to what was a good basic building block. What a load of hogwash. The article claims that Lexicon actually put a full Oppo BDP-83 INSIDE of a chassis, slapped a label on it and is shipping it for $3000 more. Don’t take our word for it, however, check out these pics. Where they went wrong, however, was when they simply lifted the Oppo BDP-83 player and threw it into their own chassis without making any performance enhancing modifications – despite claims to have done just that. What they’ve done doesn’t seem to even begin to justify the exorbitant price markup

We live in a world where everyone is building products with other peoples parts. It is just not possible to design and manufacture many electronics devices (even very possible) from “ground up”.
For most companies it’s simply not cost effective to produce their own DVD / BD players or other very complicated digital audio/video device. So the high-end manufacturers that make this kind of devices need to take some shortcuts and use ready made components. What they are now doing on those examples doesn’t seem to even begin to justify the exorbitant price markup. Has high end industry become to state where High End is just repackaged consumer electronics with huge price markup?

Universal identification is futile

Saturday, February 6th, 2010

Bruce Schneier blog post Anonymity and the Internet has interesting points on Internet security. I can agree many of them.

Universal identification is portrayed by some as the holy grail of Internet security and that anonymity is bad. According to the blog this is not the case. The problem is that universal identification won’t work. Any design of the Internet must allow for anonymity. Universal identification is impossible. Even attribution is impossible. Attempting to build such a system is futile, and will only give criminals and hackers new ways to hide.

Imagine a magic world in which every Internet packet could be traced to its origin. Even in this world, our Internet security problems wouldn’t be solved. Mandating universal identity and attribution is the wrong goal. Accept that there will always be anonymous speech on the Internet. Accept that you’ll never truly know where a packet came from. Work on the problems you can solve:  software.

The whole attribution problem is very similar to the copy-protection/digital-rights-management problem. It’s impossible to make specific bits not copyable, it’s impossible to know where specific bits came from. Bits are bits. They don’t naturally come with restrictions on their use attached to them, and they don’t naturally come with author information attached to them. Any attempts to circumvent this limitation will fail. Business model developers and law enforcement and others need to learn understand this.

Open Source Symbian

Friday, February 5th, 2010

When Nokia bought Symbian in 2008, nobody had any reason to believe their thoughts were anywhere near Open Source. Parts of the Symbian platform have been Open Source for quite some time and other portions have slowly been released.

Symbian, maker of the the world’s most popular mobile operating system, has just completed the transition to a completely open platform months ahead of schedule. While the kernel was opened up last year, the entire platform is now open source, primarily under the Eclipse Public License. By putting Symbian fully in the public domain, the Symbian Foundation is pitting it against Google’s Android.

symbian_logo

Sources:
Symbian Opens Up
Symbian Completes Transition To Open Source
Symbian.org

icbugs

Text message ripoff

Friday, February 5th, 2010

Everyone knows that movie popcorn is one of the biggest ripoffs, right? It turns out that movie popcorn carries a 600 percent markup. The biggest ripoff: text message beats movie popcorn article tells that the text messaging has a much bigger markup. Text messages themselves, are just tiny blips of data being transferred to and from mobile devices and don’t even cost the carriers a full penny to process. So with text message an operator gets a 6,500 percent markup from 20-cent message. This number only considered the text message delivery cost. It could be possible (and very probable) that charging for text message service costs considerably more than the service itself.

But don’t expect anything to change anytime soon because operators are making good money on this as people are buying the product well at the current pricing. Those of us who pay for flat-rate, all-you-can-text plans don’t worry about cost of single text message.


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