Friday, May 29, 2009
Stephen Wolfram - creator of mathematica, and the man behind The New Kind Of Science.
Recently i was searching for something over the internet and but obvious the search engine was almighty google. I thrown a lot of keywords over it but i was not getting the desired result. After searching a while with google i become frustrated so i started to search other methods of web searching. Soon i landed up to www.wolframalpha.com which is recently launched as an alpha version. The team behind this product is describing this as a technology a Computational Knowledge Engine not as a search engine. To check this product's strength i decided to make my hands dirty with it. I messed with it and got very impressive and appreciable results. This product has all the potential to become a real google competitor.Actually this project is a futuristic vision of a very wise old man Mr. Stephen Wolfram. One can know more about him from www.stephenwolfram.com/about-sw/ . Building on Mathematica, A New Kind of Science, and the success of Wolfram Research, Wolfram in May 2009 launched WolframAlpha, the are calling it an ambitious, long-term project to make as much of the world's knowledge as possible computable, and accessible to everyone.WolframAlpha contains 10+ trillion of pieces of data, 50,000+ types of algorithms and models, and linguistic capabilities for 1000+ domains. Built with Mathematica—which is itself the result of more than 20 years of development at Wolfram Research—WolframAlpha's core code base now exceeds 5 million lines of symbolic Mathematica code. Running on supercomputer-class compute clusters, WolframAlpha makes extensive use of the latest generation of web and parallel computing technologies, including webMathematica and gridMathematica.
Tuesday, May 12, 2009
Autonomous line follower robot.
Below is the video of my autonomous line follower robot. This robot is somewhat different from other autonomous bots because this is not utilising the processing power of any PIC or microcontroller. I have used a few very basic electronics and physics concepts and it worked. Using my concept this type of robot can be build under 100 Rs.
Due to lack of time right now i am not going to explain the detail functioning of this machine but here you can see it working.
Due to lack of time right now i am not going to explain the detail functioning of this machine but here you can see it working.
Labels:
autonomous,
electronics,
microcontroller,
PIC,
robot,
video
Saturday, February 16, 2008
After DTH it is time for HITS to hit the indian television.
Here in India, television is treated as one of the most popular media. In past few years DTH, a new technology used for distribution of different channels has proved a great success. DTH is an end to end distribution method in which an end user gets encrypted feeds of various channels through a small satellite reciever further a STB ( set top box ) decrypts those feeds with the decryption key provided by service provider, finally STB sends signal to tv set where end user can watch a desired channel. Considering rural citizens, and to improve educational & cultural qualities the information & broadcasting department of government of India has provided a lot of FTA ( free to channel ) which requires no encryption/decryption for watching them.
Though this whole system has a lot of merits but usually it also have some demerits. We know that technologies never remain same, the problem arrives with DTH whenever there is a change in broadcasting system, encryption/decryption method or encoding/decoding of media stream. In all above mentioned cases there is only one option i.e. Either upgrade or replace the STB. In such a situation the customer pays the money to service provider. There is one more threat i.e. all these old STBs become just junk boxes in such a situation which contribute to growth of e-waste. But since evolution is a key nature of technology, so it is time for HITS to come into the frame.
HITS stand for "head end in the sky". It is a hybrid of existing cable tv network and satellite television. Recently information & broadcasting ministry of India has announced for starting of HITS in India, another upgrade from existing MPEG-2 to MPEG-4 media encoding method in STBs is proposed. Even a few new & existing players of this field has started planning for HITS. Reliance ADAG group and Dish Tv from essel group are roaring to grab the opportunities in this field. In HITS a satellite sends encrypted feeds which are downloded by cable tv network operators ( local distributor ) through STBs, further STB decrypt the feed and refeed them to the STBs of end user through cable network. In this technology there is no need of a satellite reciever at the user front; since the main encoding/decoding and encryption/decryption is done by STB of cable network operator so in case of any future modification in technology only local distributor's STB will have to be changed. HITS can be benefittiary In cities where a cable tv network already exist. It will be really interesting to see how HITS hit the indian market.
Though this whole system has a lot of merits but usually it also have some demerits. We know that technologies never remain same, the problem arrives with DTH whenever there is a change in broadcasting system, encryption/decryption method or encoding/decoding of media stream. In all above mentioned cases there is only one option i.e. Either upgrade or replace the STB. In such a situation the customer pays the money to service provider. There is one more threat i.e. all these old STBs become just junk boxes in such a situation which contribute to growth of e-waste. But since evolution is a key nature of technology, so it is time for HITS to come into the frame.
HITS stand for "head end in the sky". It is a hybrid of existing cable tv network and satellite television. Recently information & broadcasting ministry of India has announced for starting of HITS in India, another upgrade from existing MPEG-2 to MPEG-4 media encoding method in STBs is proposed. Even a few new & existing players of this field has started planning for HITS. Reliance ADAG group and Dish Tv from essel group are roaring to grab the opportunities in this field. In HITS a satellite sends encrypted feeds which are downloded by cable tv network operators ( local distributor ) through STBs, further STB decrypt the feed and refeed them to the STBs of end user through cable network. In this technology there is no need of a satellite reciever at the user front; since the main encoding/decoding and encryption/decryption is done by STB of cable network operator so in case of any future modification in technology only local distributor's STB will have to be changed. HITS can be benefittiary In cities where a cable tv network already exist. It will be really interesting to see how HITS hit the indian market.
Thursday, February 7, 2008
Ideas ahead. My convergence idea for VOIP.
Though we have celebrated the year 2007 as a year of Broadband here in India yet there are a million of internet users who are still connected to low bandwidth internet connection. There are a lot of reasons behind it, be it non availability of services to rural area or availability of only a limited connection in a specific area. There are a lot of internet services available who demands Broadband as a bare minimum requirement. The most interesting one of them is VOIP. Let me explain it in brief for those readers who don't know what it is. VOIP stands for "voice over internet protocol" i.e. You can talk to any computer or communicater connected to internet. By further expansion and applying convergence we can talk to a user of landline telefone or cellphone.
Now let i expose my vision for these services. We all know that convergence is everywhere so why cannot we add some more convergence to this service. I hope everyone will be familiar with text to speech programs, these are programs which can read selected text on your computer screen. Suppose if we can develop an IM client with implementation of text to speech engine, we can mimic a real voice chat session even on a very low bandwidth, as much low as 15 kb/ps will be suffice. People may say that they are not satisfied with the accuracy of text to speech programs, the voice is totally inhumane. Now i have one more idea. Have you ever heard an IVRS session, of course you have heard, remember the last time when you have checked your cellphone's prepaid balance, the female voice during an IVRS session was produced by adding/arranging prerecorded voice bits, using computer algorithm. We can steal this idea for our purpose, we can create a database of prerecorded voice of frequently used word or we can provide a facility to a user to pronounce a specific word and record it in his own way. Since all this process is offline it has nothing to do with internet bandwith.
Finally we have rendered a service through which we can do a voice chat even on a 15 kb/ps bandwidth, which is going to exchange only a few megabytes of data for an entire month.
Now let i expose my vision for these services. We all know that convergence is everywhere so why cannot we add some more convergence to this service. I hope everyone will be familiar with text to speech programs, these are programs which can read selected text on your computer screen. Suppose if we can develop an IM client with implementation of text to speech engine, we can mimic a real voice chat session even on a very low bandwidth, as much low as 15 kb/ps will be suffice. People may say that they are not satisfied with the accuracy of text to speech programs, the voice is totally inhumane. Now i have one more idea. Have you ever heard an IVRS session, of course you have heard, remember the last time when you have checked your cellphone's prepaid balance, the female voice during an IVRS session was produced by adding/arranging prerecorded voice bits, using computer algorithm. We can steal this idea for our purpose, we can create a database of prerecorded voice of frequently used word or we can provide a facility to a user to pronounce a specific word and record it in his own way. Since all this process is offline it has nothing to do with internet bandwith.
Finally we have rendered a service through which we can do a voice chat even on a 15 kb/ps bandwidth, which is going to exchange only a few megabytes of data for an entire month.
Friday, February 1, 2008
W3 School (The best things in life are free)
http://www.w3schools.com This website is treated as a mecca for web development among its visitors. With a library like highly managed interface it provide you in depth knowledge on every aspect of web development. Starting from basic HTML to AJAX & VBscript this website covers every topic. This website represent itself as an online university and provides certificates & diplomas to strengthen your career in web development. If you are not a professional web developer you can just learn some basics to enhance your daily web experience. This website provide an easy to practice online interface with examples, You need not to write down the whole code on your own, just modify the code provided in practice window according to your preferences and see your final output.Since I am a keen to web technologies, I also tried it and find it as a very usefull place to visit for everyone. I have made some implementation of the knowledge provided on this website on my blogs & website. You can check them out.
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