I use Samsung "smart" TVs as monitors on several computers. These TVs automatically turn off after a duration of getting "no signal", However, they count a static computer display as "no signal". They turn off unless there is keyboard or mouse activity. Why isn't the computer display treated the same way as the display on a DVD player when it is left displaying a static image? Do DVD players send some sort of "keep alive" signal when displaying static images that computers don't send?

(I haven't found any option on the TVs settings to change this behavior. Perhaps a computer could be programmed to send a mouse movement signal periodically to keep the TV turned on? )