Patent ID: 7205974
Filing Date: 2007-04-17
Classification: G09G

Abstract:
1. In a system comprising a display apparatus (DAP), and a computer (COM) for generating a display signal (DS) and an enhancement control signal (ECS) indicating a required enhancement of the display signal (DS) within a predetermined area (PA) on a display screen of the display apparatus (DAP), the display apparatus (DAP) comprises: a liquid crystal display (LCD), a backlighting unit (BLU) with a backlighting lamp (BLL) for generating light to illuminate the liquid crystal display (LCD), a lamp driver circuit (LDC) for driving the backlighting lamp (BLL) to change a property of the light emitted when the enhancement control signal (ECS) indicates that the enhancement is required, and a signal controller (SCO) for receiving the display signal (DS) and the enhancement control signal (ECS) to supply an adapted display signal (ADS) to the liquid crystal display (LCD) to obtain an adapted transmission of the liquid crystal display (LCD), wherein the lamp driver circuit (LDC) comprises a booster (BO) for receiving the enhancement control signal (ECS) to match the change of the property of the light with the adapted transmission of the liquid crystal display (LCD), to obtain a substantially unchanged display of the display signal (DS) outside the predetermined area (PA) when the enhancement control signal (ECS) indicates that the enhancement is required.