Abstract: A displaying apparatus includes a connector having a DDC communication pin which communicates with a video card provided in a computer main body, a video signal processing unit which processes picture signals supplied through the connector, a power circuit unit which converts commercial alternating current (AC) power into driving voltages, and a controlling unit which controls power supplied to each of signal processing units from the power circuit unit to be on or off in response to existence or non-existence of DDC voltage signals input through the DDC communication pin of the connector. Accordingly, power of the displaying apparatus is controlled to be on or off in response to a power-on or off state of the computer main body, and allows the power thereof to be consumed at a minimum level under the condition of a stand-by power mode.

Abstract: An LCD monitor with a dual interface, having a DVI-I connector through which digital and analog video signals from a computer main body are input, and digital and analog display modes according to the type of the input video signal. The monitor includes a signal sensing part to sense the video signal input through the DVI-I connector; and a control part to adapt the display mode for the type of video signal input when the computer main body is performing system booting, based upon the sensing result of the signal sensing part. The present invention provides an LCD monitor with a dual interface and a control method thereof, which can display a system booting screen even if a video signal input when the computer system is performing a system booting is unfit for a preset display mode.

Abstract: A power saving apparatus of a monitor which is capable of reducing power consumption in a monitor by controlling the power supplied to a signal sensor in a power saving mode and a controlling method thereof are provided. The power saving apparatus includes a power supply unit which supplies operational power to the signal sensor, which senses an input state of a video synchronization signal input into thereto and generates data based on the input. A microprocessor determines whether the monitor is in a power saving mode or a normal mode based on the data generated by the signal sensor, and then cuts off the power supplied to the signal sensor if the monitor is determined to be in a power saving mode. The power is intermittently resupplied to and cut off from the signal sensor during the power saving mode.