Samsung 215TW Service Manual - Page 54

14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms - TFT-LCD (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) This is a circuit that converts from analog signal to digital signals. - PLL(Phase Locked Loop) During progressing ADC, Device makes clock synchronizing HSYNC with Video clock - Inverter Device that supply Power to LCD panel lamp. this device gernerate about 1,500~2,000V. - SMPS(Switching Mode Power Supply) Switching Mode Power supply. This design technology is used to step up/down the input power by switching on/off - FRC(Frame Rate Controller) Technology that change image frame quantity displayed on screen for one second. Actually TFT-LCD panel require 60 pcs of frame for one second. so,this technology is needed to convert input image to 60 pcs regardless input frame quantity. - Image Scaler Technology that convert various input resolution to other resolution.(ex. 640* 480 to 1024*768) - Auto Configuration(Auto adjustment) This is an algorithm to adjust monitor to optimum condition by pushing one key. - OSD(On Screen Display) On screen display. customer can control the screen easily with this. - Image Lock This means "Fineness adjustment" in LCD Monitor, the features are "Fine" and "Coarse" - FINE "Fine" adjustment is used to adjust visibility by control phase difference. - COARSE This is a adjustment by tuning with Video colck and PLL clock. - DVI (Digital Visual Interface) This provides a high speed digital connection for visual data types that is display technology independent. this interface is primarily forcused at providing a connection between a computer and its display device. - L.V.D.S.(Low Voltage Differential Signaling) a kind of transmission method for Digital. It can be used from Main PBA to Panel. - DVI (Digital Visual Interface) This provides a high speed digital connection for visual data types that is display technology independent. this interface is primarily forcused at providing a connection between a computer and its display device. - T.M.D.S (Transition minimized Differential Signaling) a kind of transmission method for Digital. It can be used from Video card to Main PBA. - DDC(Display data channel) It is a communication method between Host Computer and related equipment. It can make it Plug and Play between PC and Monitor. - EDID Extended Display Identification Data PC can recognize the monitor information as Product data, Product name,Display mode,Serial number and Signal source,etc through DDC Line communicating with PC and Monitor. 14-1