Samsung has responded to an article on UK's Guardian newspaper, which suggested that 'Motion Lighting ', one of the power saving modes used in Samsung's TVs, has been designed for regulatory lab tests, rather than real world viewing. "We firmly reject this suggestion," Samsung said, adding that the 'Motion lighting' technology helps save energy in real life.

Samsung says that the technology reduces power consumption by reducing screen brightness when the picture on the screen is in motion. It is a standard out-of-the-box feature, which is switched on when the customer takes delivery of their TV, and remains on whenever the customer chooses to watch their TV in Standard viewing mode.

"Motion lighting is not a setting that only activates during compliance testing," Samsung added. "On the contrary, it is a default setting which works both in the lab and at home; delivering energy savings and helping us to reduce our environmental impact."

Motion lighting was introduced in 2011 across all Samsung TVs as part of a range of features we have developed to help reduce the environmental impact of TV technology.

If the customer chooses to alter their display settings or switch to a different mode then the feature switches off, Samsung says.