Power-free, wireless keyboard

Chung Sung-kwan, head of the future device team at the KAIST Institute for Information Technology Convergence, which operates under the KAIST Institute(Director Kim Sang-soo). Chung developed a “power-free, wireless keyboard,” which can operate without a power supply and a cord, and successfully transferred the technology to a company, drawing attention from people within and outside the research community.

The secret lies in RFID technology. Using mobile RFID tag technology, the new device allows the computer to recognize the pressing of keys.

Common keyboards contain some 80 to 110 keys. These keys are linked to circuits at the bottom, and whenever keys are pressed, the signs are displayed on the monitor, which is an output device. Both desktop computers and laptops operate through this mechanism.

The keys on the power-free, wireless keyboard are the same as those on normal keyboards in the way they are linked to circuits. However, the new keyboard’s individual keys, each measuring 2cm, each contain a built-in antenna that transmits data to the keyboard, and a RFID chip. The chip is about 2 mm long and 2mm wide.

For full story, see KISTI.