OK, so remember when I was talking about second screen experience, and how there needed to be a way to be able to sync content from the TV to the second screen? No? Well, I was. Anyway, I said that it was probably being done based on a timing thing. At 19:07:33 show X on tablet, blah blah blah. Not the most optimized way to do it I think. To the rescue, FUJITSU! (who also happened to have made my very first laptop...but I digress).

So, Fujistu Labs have developed a way for the TV to send a signal to the tablet or mobile to sync content. I know I said that, I was summarizing. It's an information transmission technology that will allow you to say, interact with something on the TV or digital signage or other video-playing screen.

Cool New Fujitsu Technology Will Allow Video Screen to Beam Info to Mobile fujitsu data trans tech

Fujitsu's Information Transmission Technology via Video Data

The technology will trigger an information 'shot' to your tablet or mobile. Right now it's actually done by taking a photo of the screen which then triggers the download information. It's not exactly ideal I guess but it's better than having to type and there's no need to make a special QR code or anything like that.

It uses signals that are imperceptible to the human eye, therefore not degrading image quality, which can then be picked up by the camera and an app on the mobile phone. That then allows things like URLs, coupons, or other details to be loaded onto the mobile phone.

It's all based on brightness increase/decrease which is translated into binary.

ALSO ►  ATTN B2B Marketers: How's Video Working for You? [Survey]

Cool New Fujitsu Technology Will Allow Video Screen to Beam Info to Mobile Fujitsu technology video data lights

The binary signals are then transmitted as a data stream from what I understand of it. You can be up to 2 meters (6 feet) away and still receive the information. Of course, it sounds like you'll have to hold your phone up for as long as it takes the message to be sent.

It's pretty cool and if you want to read more on it there's a brief one-page PDF that talks about the technology. When will it be available? Well, that's anyone's guess now isn't it? Of course, I still think this should be able to be done with near-field communication or Bluetooth or something like that, something that doesn't require us to utilize the camera on the mobile phone. Too bad I'm not an engineer!

  • dr.time

    You are not an engineer but you are absolutely right,. It is a lot more convinient to use a separate control channel to transmit the information allowing TVs in shop windows, airports etc. to work at larger distances. The TV signal itself can be utilized as the down channel when not transmitting video information during the picture frame refreshes. The TV can precisely sync the radio transmission (bluetooth for short distances or wifi and 3g for longer distances) so that when a frame occurs and the user has pressed a button, with the phone aimed at the TV the information would be sent.

    In this case, the phone would send a picture of the screen and a time stamp to a server that matched to the frame and returned the information. Of course this method would not allow for multiple souces of information on a single frame or different information on frames very close together. It would concentrate on scenes of about 1/2 sec.

    There would not be any need for holding the phone for longer transmission, or in the case of short range transmission, such as bluetooth, you would not even need to point the phone, just pair with the TV.

    This method also allows to use a double channel (transmit and receive) rather than the one way channel that video would eventually provide.

    Pairing with the TV could also allow for a regular two-way channel such as 3G to work with a sync channel from a TV Bluetooth. In this method there is no need to point to the video or create a communication channel with the broadcaster via video. The system would understand via the signal from the TV what you are watching and inform a server that would provide all the interaction. This way your TV and mobile would function as an interactive TV device where you can ask questions, provide answers, play games, communicate with other people watching the same channel or get adverstising information.

    Yeap, pretty clearly you would like to go with a separate 2-way auxilliary RF channel.