Portable computer and control method therefor
AssigneeSamsung Electronics Co., Ltd.
InventorSeob Cho
Life of this patent
Estimating the term…
Abstract
A portable computer including a display unit, and a video processor generating and supplying a first video signal to the display unit, includes a video adaptor outputting the first video signal to the outside, and receiving a second video signal from an external input source, and a control unit for supplying the second video signal to the display unit when the external input source is connected to the video adaptor. Thus, the present invention provides a portable computer and a control method, which can receive a video signal from an external input source through one existing output port for outputting a video signal without adding a separate input port.
Claims31
A computer system comprising a display unit, and a video processor for generating a first video signal, the computer system comprising:
- a video adaptor for supplying the first video signal to a monitor, and for receiving a second video signal from an external input source, which is different from the monitor;
- and
- a control unit for controlling the supply of the first video signal to the monitor in response to the monitor being connected to the video adapter and a Display Data Channel (DDC) signal input from the monitor, and for controlling the supply of the second video signal to the display unit in response to the external input source being connected to the video adaptor and the external input source not inputting the DDC signal.
A control method for a portable computer comprising a display unit, a video processor for generating a first video signal, a video adaptor for supplying the first video signal to a monitor and for receiving a second video signal from an external input source, which is different from the monitor, the method comprising:
- determining whether an external device connected to the video adaptor is the external input source or an external output device;
- and
- supplying the first video signal to the monitor in response to the determination that the monitor is connected to the video adaptor and a Display Data Channel (DDC) signal input from the monitor, and supplying the second video signal to the display unit in response to the determination that the external input source is connected to the video adaptor and the external input source not inputting the DDC signal.
A computer system comprising:
- a display panel to provide a visual display of one of a first video signal and a second video signal;
- a video processor to generate the first video signal;
- a video adaptor arranged to supply the first video signal to an output device that is a monitor and to receive the second video signal from an external input source, which is different from the monitor;
- and
- a control unit configured to control selection between the first video signal and the second video signal for a visual display, via the display panel,
- wherein the control unit selects the first video signal to the monitor in response to the monitor being connected to the video adaptor and a Display Data Channel (DDC) signal input from the monitor, and the second video signal to the display panel in response to the external input source being connected to the video adaptor and the external input source not inputting the DDC signal.
Dependencies are inferred from the claim text.