Image displaying method and display device using the same

1. A television capable to be operated in a plurality of operation modes comprising a first priority mode, the television connected to a plurality of signal sources, the television comprising:

a screen;

a plurality of input ports for respectively connecting to the plurality of signal sources, one of the input ports being corresponding to the first priority mode;

a detecting circuit for detecting whether a first signal is received at the input port corresponding to the first priority mode, when the first signal is received at the input port corresponding to the first priority mode, the television is triggered to operate in the first priority mode; and

a processor for displaying the first signal on the screen when the television is in the first priority mode;

wherein when the first priority mode of the television is not triggered, and the television is in one of the other operation modes, the processor displays a second signal corresponding to one of the other operation modes on the screen.

2. The television according to claim 1 , wherein the first priority mode is the game mode for receiving the first signal from a game machine.

3. The television according to claim 1 , wherein the operation modes further comprise a standby mode, and the television further comprises a standby power circuit for supplying a standby power to the detecting circuit and the processor when the television is in the standby mode.

4. A method of controlling a display device selectively displaying one of a first signal received from a first signal source and a second signal received from a second signal source, the method comprising the steps of:

displaying the second signal;

detecting whether the first signal is received; and

displaying the first signal when the first signal is received by the display device;

wherein the display device is capable to be operated in a first priority mode, a television (TV) mode or an audio-video (AV) mode, the display device receives a television signal from a television signal source, and receives a video signal from an audio-video (AV) signal source, the display device displays the television signal when the display device is operated in the TV mode, the display device displays the video signal when the display device is operated in the AV operation mode, the display device detects whether the first signal is received by the display device; and the display device is triggered to be operated in the first priority mode and displays the first signal when the first signal is received by the display device.

5. The method according to claim 4 , further comprising the steps of:

continuously displaying the second signal when the first signal is not received by the display device.

6. The method according to claim 5 , wherein the first signal source is a video game machine, the first signal is the video signal after the video game machine is turned on, the second signal source is the television signal source, and the second signal is the television signal.

7. A display device, comprising:

a screen;

a first input port for receiving a first signal from a first signal source;

a second input port for receiving a second signal from a second signal source;

a detecting circuit for detecting whether the first signal is presented at the first input port; and

a processor for selectively controlling one of the first signal and the second signal to be displayed on the screen;

wherein when the detecting circuit determines the first signal is presented at the first input port, the processor displays the first signal on the screen; and

when the detecting circuit determines the first signal is absent from the first input port after the first signal is previously presented at the first input port, the processor displays the second signal on the screen;

wherein the input ports receive a television signal from a television signal source, and receive a video signal from an audio-video (AV) signal source, the processor displays the television signal on the screen when the display device is set in a TV mode and the detecting circuit determines the first signal is not received, and the processor displays the video signal on the screen when the display device is set in an AV operation mode and the detecting circuit determines the first signal is not received.

8. The display device according to claim 7 , wherein the first signal source is a video game machine, the first signal is received after the video game machine is turned on.

9. The display device according to claim 8 , wherein the second signal source is an audio-video (AV) equipment, the second signal comprising an audio-video signal, and the processor displays the audio-video signal on the screen when the video game machine is off.

10. A display device, comprising:

a screen;

an input port for receiving a first signal from a first signal source;

a detecting circuit for detecting whether the first signal is presented at the input port; and

a processor for selectively controlling the display device to be operated in one of a standby mode and a turn-on mode according to whether the first signal is presented at the input port;

wherein the processor controls the display device to be operated in the turn-on mode and displays the first signal on the screen when the detecting circuit determines the first signal is presented at the input port; and

the processor controls the display device to be operated in the standby mode when the detecting circuit determines the first signal is absent at the input port;

wherein the first signal is a video signal;

wherein the display device is capable to be operated in a first priority mode, a television (TV) mode or an audio-video (AV) mode, the display device receives a television signal from a television signal source, and receives the video signal from an audio-video (AV) signal source, the display device displays the television signal when the display device is operated in the TV mode, the display device displays the video signal when the display device is operated in the AV operation mode, the display device detects whether the first signal is received by the display device; and the display device is triggered to be operated in the first priority mode and displays the first signal when the first signal is received by the display device.

11. The display device according to claim 10 , further comprising a standby power circuit for supplying a standby power to the detecting circuit and the processor when the display device is in the standby mode.

12. The display device according to claim 10 , wherein the first signal source is a video game machine and the first signal is the video signal outputted after the video game machine is turned on.