Control system for tone mapping of LED display screen

The utility model discloses a control system for tone mapping of an LED display screen. The control system comprises a controller and the LED display screen. The controller receives the HDR signal andcompiles the HDR signal into an SDR signal and a highlight image signal; the LED display screen comprises a plurality of driving ICs and a plurality of display units, the driving ICs receive SDR signals or highlight image signals, and the display brightness of the corresponding display units is adjusted to be within a standard brightness range or a highlight brightness range. According to the utility model, the HDR signal is compiled into the SDR signal and the highlight image signal which can be identified by the driving IC, so that the display brightness is controlled to be within the standard brightness range or the highlight brightness range, the tone mapping function of the LED display screen is realized, and the LED display screen can be equipped with the existing driving IC withouta special driving IC. And