Patent ID: 7518599
Filing Date: 2009-04-14
Classification: G06F,G09G

Abstract:
1. A display control device for use in an electronic apparatus, said electronic apparatus including a main controller and a display panel, and said display control device comprising: a digital data register in communication with said main controller for refreshingly storing a digital data display signal received from said main controller in a normal mode, and reiteratively outputs a last stored digital data display signal in an idle mode, wherein said digital data display signal further defines a display data to be shown on a first portion of said display panel; a digital-to-analog converter in communication with said digital data register, converting said digital data display signal stored in said digital data register into an analog data display signal and outputting said analog data display signal to said display panel to be revealed; a timing controller in communication with said main controller and said display panel, asserting a set of panel display control signals to said display panel in response to a control signal separate from the digital data display signal and received from said main controller in said normal mode, and actively asserting said set of panel display control signals to said display panel when receiving no control signal from said main controller in said idle mode, wherein said set of panel display control signals includes a display region control signal to control said digital data display signal stored in said digital data register to be revealed on said first portion, and another digital data display signal from said main controller to be revealed on a second portion of said display panel; and a multiplexer in communication with said digital data register, said main controller, said timing controller and said digital-to-analog converter, said multiplexer selecting one of said digital data display signal stored in said digital data register and said another digital data display signal from said main controller to be outputted to said digital-to-analog converter in response to a selection signal included in said set of panel display control signals.