In the Infrared Communications System Association (ICSA), we have contributed to standardize (ARIB STD T-50) of an optical wireless LAN system. The standardization (Ver. 3.0) up to 1Gbps is already made. In recent years, concern about visible optical communications or lighting optical communications is increasing.
Then, examination which extends an operating wavelength to a visible region
was started with the Visible Light Communication Consortium (VLCC). Now,
the standardization work about the system to transmission speed 100Mbps
is done, and the decision as ARIB STD T-50 (Ver.4.0) is planned by the
autumn of 2009.