BACKLIGHT ADJUSTMENT SYSTEM

摘要

A preferred embodiment relates to controlling the amount of backlight power in an electronic display to account for the temperature in the backlight cavity. Another embodiment relates to a system for controlling the amount of backlight based on both the temperature of the backlight and the amount of ambient light.

主权项

1. A system for controlling the backlight of an electronic display, the system comprising:
an electronic display with a viewing surface and a backlight; a power source operatively connected to said backlight; a first light sensing device to measure ambient light outside of the electronic display; a second light sensing device to measure light emitted by said backlight; and a software driver operatively connected to
said first and second light sensing devices; andsaid power source; and wherein the software driver is adapted to
receive a light ratio, wherein said light ratio is defined as the ratio of the amount of said ambient light contacting said viewing surface to the amount of said emitted light;increase the power of said power source when the light ratio exceeds a maximum preferred light ratio; anddecrease the power of said power source when the light ratio falls below a minimum preferred light ratio.