Image display system, image display device of image display system, mobile terminal device, connection establishment method of image display system

1. An image display system, in which an image display device forming an image and a mobile terminal device supplying image information are connected with each other via a predetermined network,

the image display device comprising:

a storage unit which stores connection information for connecting to the image display device in the predetermined network;

an encoding unit which encodes a connection information code including the connection information; and

a display unit which displays (1) the connection information code or an image including the connection information code, and (2) an instruction to photograph the connection information code or the image including the connection information code, and

the mobile terminal device comprising:

a code acquiring unit comprising an imaging unit which acquires the connection information code from the displayed connection information code or the image including the connection information code by remote imaging;

a code analysis unit which analyzes the connection information from the acquired connection information code; and

a network connection establishment unit which establishes a network connection with the image display device on the basis of the analyzed connection information.

2. The image display system according to claim 1 , wherein the predetermined network is any one of a wired and/or wireless local area network (LAN), Bluetooth (registered trademark), and a wireless universal serial bus (USB).

3. The image display system according to claim 1 , wherein the connection information includes a plurality of identifiers including a network name or a group name to which the image display device belongs in the predetermined network and/or a password.

4. The image display system according to claim 1 , wherein the connection information code is a two-dimensional code or a three-dimensional code.

5. The image display system according to claim 1 , wherein the image display device further includes a password generating unit which generates a password for authenticating a counterpart device when the network connection is established.

6. The image display system according to claim 5 , wherein the password generating unit generates a new password whenever the network connection is established.

7. The mobile terminal device according to claim 1 , wherein the imaging unit remotely images connection information code from the image including the connection information code; and

the code analysis unit analyzes the connection information from the imaged connection information code.

8. An image display device in an image display system including the image display device forming an image and a mobile terminal device supplying image information to the image display device over a predetermined network, the image display device comprising:

a storage unit which stores connection information for connecting to the image display device in the predetermined network;

an encoding unit which encodes a connection information code including the connection information; and

a display unit which displays (1) the connection information code or an image including the connection information code, and (2) an instruction to photograph the connection information code or the image including the connection information code,

wherein the connection information code or the image including the connection information code is displayed before establishing network connection with the mobile terminal device; and

the mobile terminal device comprising:

a code acquiring unit comprising an imaging unit which acquires the connection information code from the displayed connection information code or the image including the connection information code by remote imaging.

9. A method of establishing connection between an image display device forming an image and a mobile terminal device supplying image information to the image display device over a predetermined network, the method comprising:

displaying (1) a connection information code or an image including the connection information code obtained by encoding connection information for connecting to the image display device in the predetermined network and (2) an instruction to photograph the connection information code or the image including the connection information code;

imaging the connection information code at the mobile terminal device by remote imaging with a code acquiring unit comprising an imaging unit;

analyzing the imaged connection information code at the mobile terminal device; and

establishing a network connection with the image display device using the analyzed connection information at the mobile terminal device.

10. The method according to claim 9 , wherein the predetermined network is any one of a wired and/or wireless local area network (LAN), Bluetooth (registered trademark), and a wireless universal serial bus (USB).

11. The method according to claim 9 , wherein the connection information includes a plurality of identifiers including a network name or a group name to which the image display device belongs in the predetermined network and/or a password.

12. The method according to claim 9 , wherein the connection information code is a two-dimensional code or a three-dimensional code.

13. The method according to claim 9 , wherein the image display device further includes a password generating unit which generates a password for authenticating a counterpart device when the network connection is established.

14. The method according to claim 13 , wherein the password generating unit generates a new password whenever the network connection is established.