One object of the invention is a display matrix controller configured to drive a display matrix (206, 308) to display frames of a source video signal, the controller comprising an input interface (203, 204) configured to provide for each frame to be displayed a frame difference information, specifying changed pixels, whose values change between a frame to be displayed and a currently displayed frame, a brightness equalizer (210) configured control the display of the frame such as to equalize the level of viewer perception of brightness to a predetermined level for each frame to be displayed depending on the frame difference information, and a matrix driving circuit (205, 307) configured to receive the frame difference information and to drive the display matrix (206, 308) to display the frame to be displayed by redrawing only the changed pixels.