Multiple hardware paths for backlight control in computer systems

摘要

The disclosed embodiments provide a system that drives a display from a computer system. The system includes a first hardware path for controlling a backlight of a display of the computer system. The system also includes a second hardware path for controlling the backlight. Finally, the system includes a backlight controller that enables use of the first and second hardware paths in controlling the backlight from the computer system.

主权项

1. A system for driving a display from a computer system, comprising:
a first hardware path for controlling a backlight of a display of the computer system; a second hardware path for controlling the backlight; and a backlight controller coupled to the first hardware path and the second hardware path, wherein the backlight controller is configured to enable use of the first and second hardware paths in controlling the backlight from the computer system, wherein the first and the second hardware paths control the backlight independently of each other, wherein the first and second hardware paths are both configured to send commands to the backlight controller, wherein the first hardware path comprises an auxiliary path from a graphics-processing unit (GPU) to the backlight controller, and wherein the second hardware path comprises a path without a graphics-processing unit from a motherboard to the backlight controller.