Patent ID: 7116322
Filing Date: 2006-10-03
Classification: G09G

Abstract:
1. A display apparatus, comprising: input means for receiving analog and digital video signals outputted from a video card; a plurality of driving components; an electric power supply part for supplying electric power; a scaler chip including an analog-to-digital converter and phase-locked loop (ADC&PLL) part for receiving and processing the analog video signals and horizontal and vertical synchronous signals of the analog video signals, and producing first RGB digital signals and a PLL clock signal, a transmission minimized differential signaling (TMDS) part for receiving and processing the digital video signals to produce second RGB digital signals and horizontal and vertical synchronous signals of the digital video signals, and a scaler connected to said ADC&PLL part for receiving and processing the first RGB digital signals and the PLL clock signal, and connected to said TMDS part for receiving and processing the second RGB digital signals and the horizontal and vertical synchronous signals of the digital video signals; and a controller connected to said scaler for detecting the horizontal and vertical synchronous signals of the digital video signals processed by the TMDS part, and for turning off the driving components and lowering a number of driving clocks of the scaler chip according to establishment of a power saving mode when at least one of the horizontal and vertical synchronous signals of the digital video signals is not detected.