Vehicle backlight adjusting method, device and system

The invention relates to the technical field of multimedia, and provides a vehicle backlight adjusting method, device and system. The method is used for a multimedia host, and the method comprises the following steps: sending brightness level setting information based on first external input; receiving first brightness level control information in response to the brightness level setting information; and uniformly controlling the backlight brightness of each backlight device in at least one backlight device according to the first brightness level control information. According to the invention, overall adjustment of backlight brightness of all backlight devices of the whole vehicle can be realized through the multimedia host. 本发明涉及多媒体技术领域，提供一种车辆背光调节方法、装置及系统，该方法用于多媒体主机，该方法包括：基于第一外部输入，发送亮度等级设置信息；接收响应于所述亮度等级设置信息的第一亮度等级控制信息；根据所述第一亮度等级控制信息，统一控制至少一个背光设备中每个背光设备的背光亮度。本发明可以通过多媒体主机，实现整车所有背光设备的背光亮度的整体调节。