Et si demain votre lampe de bureau chargeait un film en HD sur votre smartPhone en quelques minutes, sans wifi et donc sans fréquence radio ? Et si la voiture vous précédant informait instantanément votre voiture d’un freinage brutal ou d’une avarie ? Et si la surconsommation numérique et le besoin d’être connecté partout saturait la bande passante actuellement disponible ?
Le premier dossier d’Ubimind se focalise sur une technologie très prometteuse : le Li-Fi. Pour en savoir plus, direction la page du dossier.
Walter Kraus
déc 11, 2012 -
Malvin,
I forgot one comment. I saw in one of your articles your estimation about IR technology and why it is not an alternatively.
In fact, we have in our lab a functioning IR data link. It is eye-safe (Laser safety class 1) and transfers 3 Gbps. Early next year we will have a 5 Gbps proof of concept ready.
The times of slow remote controls for TVs were developed in the 80’s. The IrDA is already working on Gbps standards for quite some time.
Best regards
Walter
Walter Kraus
déc 11, 2012 -
Hello Melvin,
I just read your comment on the LinkedIn VLC group. I understand exactly your point. VLC has – unfortunately – a lot of problems, which I do not like to mention in the group discussion. Unfortunately, VLC is far away from being mature, fast and cheap enough to be implemented so you could communicate with your iPhone or from car to car.
However, there are Li-Fi technologies which are mature – only they are not limited to the visible light frequencies. We have been working for years quietly on these technologies within the Li-Fi Consortium. Have a look at our website.
Best regard
Walter Kraus
Melvin
déc 11, 2012 -
Hi Walter,
Many thanks for taking the time to write your detailed comments.
It seems like I have been too harsh on IR ! I am going to update my article and mention that. I will also add the Li-Fi consortium into my sources as I remember having read a lot of interesting things down there.
Now, going back to the « visible » domain, how would you define « mature » here ? I understand VLC is not ready to « ship » right now, as it certainly has difficulties to overcome; but : we do see some « beta » applications grow there and there, correct ? It seems like the tech has started to babble!
So when you are saying that this is « far away » from being mature, are you saying that the buzz around this technology is way too soon ? Meaning we should not expect to see VLC apps before….15, maybe 20 years or more from now ?
To be honest, when writing the article, I was more thinking about a range of 4-5 years.
When I was talking about 5G smartPhones, I was thinking about articles like the one here :
http://money.cnn.com/2012/03/08/technology/5G-wireless/index.htm . I noticed this very interesting fact from Tod Sizer, head of wireless research at Alcatel-Lucents : » 5G won’t be about more speed, necessarily, but it will be more about meeting the expectation of service quality. »
And VLC seems like the right answer to these expectations !
But what you are saying is that maybe we should 1st have a look at IR tech before getting too much enthusiastic on VLC ?
Best,
Melvin Pressouyre
ps : Une précision pour les francophones, Walter KRAUS est le Chairman du consortium sur le Li-Fi et m’a repris sur le dossier Li-Fi, en expliquant qu’il y a des technologies de transmission de données infra-rouge bien plus mature que la VLC; qui elle ne traite que du domaine du « visible ».
Traduit autrement, mon enthousiasme sur la VLC est peut être un peu trop prématuré car il semblerait qu’il y ait encore pas mal d’embûches « techniques » vers la voie de la production/mise en application! Pour ma part je tablais sur une mise en prod. effective d’ici 4-5 ans.