Patent ID: 7535453
Filing Date: 2009-05-19
Classification: G09G

Abstract:
1. A brightness control method for a video display appliance having a lamp and a memory, comprising: outputting video and audio signals if power is applied to the appliance; displaying various kinds of menus pre-stored in the memory according to a user's selection; and controlling to automatically switch a present mode over to a lamp power saving mode according to a result of comparing an adjusted display brightness value with a reference brightness value pre-stored in the memory, wherein controlling to automatically switch a present mode over to a lamp power saving mode includes adjusting a display brightness according to the display brightness value with adjusting a brightness of the lamp when the adjusted display brightness value becomes smaller than the reference brightness value and the present mode is not the lamp power saving mode, and adjusting brightness according to the display brightness value and adjusts a brightness of the lamp when the adjusted display brightness value becomes larger than the reference brightness value and the present mode is the lamp power saving mode.