Twenty-five companies, such as KDDI, Tokyo Electric Power and Matsushita Electric Works, will jointly develop a business that uses lighting equipment to build a high-speed communication network. Let the illuminated LED lighting device with a dedicated communication device shine on the mobile phone, and then connect to the Internet to accept music and video images. Because this design can take advantage of existing lighting and line equipment, no infrastructure investment is required. The plan is expected to be put to practical use by the end of 2009.
The Visible Optical Communications Enterprise Group, consisting of 25 companies, will work with the International Standardization Group Infrared Data Association, which is responsible for mobile phone infrared communications, to advance this program.
The specific method is to transmit telecommunication data transmitted by wire communication of the home outlet. A dedicated communication device capable of transforming telecommunication data into a wavelength corresponding to light has been developed, and the mobile terminal user can receive the LED light as long as the existing infrared communication receiving optical port is slightly modified.
The visible optical communication enterprise group has achieved the success of high-speed communication tests of more than 100 megabits per second using the wavelength of LEDs. Tests have shown that as long as there is enough lighting in the room, high-speed wireless communication can be carried out using a mobile phone or a personal computer. After being put into practical use at the end of next year, after low-cost technology development, it is expected to be promoted to the market after 3 to 5 years.
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