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Casio unveils prototype visible light communication system using smartphones at the CES 2012


Casio will exhibit a prototype visible light communication system using smartphones at the CES 2012. Visible light communication (VLC) is a technology that transmits digital signals by flashing light in frequencies that are visible to the naked eye. In Smartphone-to-smartphone communication, the system flashes smartphone screens to achieve visible light communication (VLC). When someone takes a photo with a smartphone camera, the subjects simply turn their smartphone screens toward the camera device to display personal information or messages in the photo. The images and information are shared on the spot among everyone’s smartphones, so that it can be combined with social media to simultaneously make friends while taking photos. The system can simultaneously receive data from up to five smartphones for display in a single photo.


Information transmission to smartphones using LED and digital signage. A system that enables users to receive information from a shop or advertiser, by viewing digital signage or an LED light source placed in front of the shop through a smartphone camera. The information can be received from a remote location, as long as the camera can detect the flashing light. Shops can start using their existing monitors to disseminate information right away, only needing to dedicate a small area to flash the light. VLC has potential applications in many fields including augmented reality, since it can use a wide range of light-producing sources including monitors, LED lighting and signage, and because it can be read from a distance without impacting people or electronic equipment.

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