1. A method of display, comprising steps of that a computing device in an image source which is separated from a display defines an area of interest in an image, and the computing device in the image source uses information pertaining to such area of interest to calculate and determine a System Synchronized Backlight Control (SSBC) profile of the image and the computing device in the image source provides the SSBC profile of the image pertaining to the area of interest in a video signal stream or the computing device in the image source provides the SSBC profile of the image of the area of interest as metadata, wherein said SSBC profile means system synchronized brightness control which is a means of simultaneously adjusting backlight brightness and gray levels of LCD pixels in real time based on the content of the input image.