Four major Japanese manufacturers of robots joined forces, united by a common concern that South Korea were ahead in the race to transform robots from science fantasy elements into commercial success.

Japan, which has long been at the forefront of robotics technology, has created machines that clean, dance, greet, and make others watch you. But nonetheless the "service robots" have not had much penetration in households, far more likely to invest in the latest flat screen television in a humanoid.

Businesses _ZMP Inc. of Tokyo, Business Design Laboratory Co., Nagoya, Osaka Vstone and Tmsuk Co. Fukuoka_ to say that a new law passed this year, South Korean robotics requires them to form the "Association for market creation of the the future generation robots "to cooperate in research, development and marketing.

After a decade of working in isolation, Japanese companies now need a wider front and energetic in promoting the products of massive penetration, said Yoichi Takamoto, Tmsuk CEO and owner of the new group.

"The South Korean law was passed, and we realized that if we did nothing we would be in trouble," said Takamoto, whose company manufactures the "Roborior" of $ 2700, a device with wheels that oversees the homes and offices empty.

Indeed, South Korea has embraced robotics with unparalleled national zeal.

The government of that country to introduce a robot in every home by 2020, and has mobilized companies and scientists to help integrate robots in South Korean society. The country intends to build two amusement parks with the robotic theme for 2013 and until last year drew up a code of ethics robotics "to prevent abuses.