April 14, 2006
DoCoMo Develops "Sound QR Code"
NTT DoCoMo yesterday announced that they developed the acoustic OFDM (Orthogonal frequency-division multiplexing) technology, which can be used to embed URLs and text data in broadcast music/audio. Everyone's favorite RFID in Japan reports.
"Consumers' mobile phones "listen" to the music/audio and extract the embedded URLs/data. About 100 characters can be transmitted in a second. (To deploy this technology, broadcast stations will need to install a dedicated encoder. Mobile phones need to be enhanced with a decoder mechanism as well.)
"DoCoMo thinks this technology can also be used at shopping malls and supermarkets. Then, the sound from in-store speakers would probably be delivering information about specials, ads, discount coupons, etc. ITmedia describes this technology as "Sound QR Code" or "Sound Toruka". ...more
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