Video display system, display device and source device

1. A video display system comprising:

a source device that reproduces and outputs content through an HDMI cable; and

a display device that displays the content output from the source device through the HDMI cable,

wherein, when the display device receives a 3D content from the source device through the HDMI cable and changes from a 2D displaying state to a 3D displaying state, the display device provides a guidance to prompt a user to make preparations for viewing the 3D content and transmits a message for halting reproduction of the 3D content to the source device through the HDMI cable,

after the source device receives the message for halting reproduction of the 3D content from the display, the source device halts reproduction of the 3D contents,

after being instructed or operated to reproduce the 3D content by a user after the source device halts the reproduction of the 3D content by the message for halting reproduction of 3D content, the display device transmits a message for reproducing the 3D content to the source device through the HDMI cable, and

after the source device receives the message for reproducing the 3D content from the display device, the source device reproduces and outputs the 3D content to the display device through the HDMI cable.

2. The video display system according to claim 1 , wherein

after being instructed or operated to reproduce the 3D content by a user, the presentation of the guidance is erased on the display device.

3. The display device according to claim 1 , wherein

the display device does not provide the guidance, if the display device is already in the 3D displaying mode when display device receives the 3D content.

4. A display device comprising:

a video reception unit that receives a content output from a source device through an HDMI cable;

a display unit that displays the received content by the video reception unit;

a communication unit that communicates a message with the source device through the HDMI cable; and

a control unit, wherein:

when the video reception unit receives a 3D content and the display unit changes from a 2D displaying state to a 3D displaying state, the control unit provides a guidance to prompt a user to make preparations for viewing the 3D content and the communication unit transmits a message for halting reproduction of 3D content to the source device through the HDMI cable, and

after being instructed or operated to reproduce the 3D content by a user after transmitting the message for halting reproduction of 3D content, the communication unit transmits a message for reproducing the 3D contents to the source device through the HDMI cable.

5. The display device according to claim 4 , wherein

after being instructed or operated to reproduce the 3D content by a user, the presentation of the guidance is erased on the display unit.

6. The display device according to claim 4 , wherein

the control unit does not provide the guidance, if the display device is already in the 3D displaying mode when display device receives the 3D content.

7. A source device comprising:

a receiver that receives content;

a storage unit that stores the received content;

a decoder that decodes the content received by the receiver or the content stored in the storage unit;

a video transmission unit that transmits the content decoded by the decoder to a display device through an HDMI cable; and

a communication unit that communicates a message with a display device through the HDMI cable, wherein:

where the content received by the receiver is 3D content that includes a 3D video and the received content is determined to require a time shift reproduction, the storage units starts to store the received content, and

after the communication unit receives a message for reproducing the stored content or a message indicating that the display device is in a state capable of displaying a 3D video from the display device through the HDMI cable, the content stored in the storage unit is reproduced by a time shift reproduction, the reproduced content is decoded by the decoder and then the video transmission unit transmits the decoded content to the display device through the HDMI cable.

8. The source device according to claim 7 , wherein if the 3D content is in a predetermined genre, then the 3D content received by the receiver is decoded by the decoder and the decoded content is output from the output to the display device.