Image display device and image display method, image output device and image output method, and image display system

1. An image display device comprising:

a processing device and a memory configured to store instructions which, when executed by the processing device, control:

displaying an image on a display unit of the image display device;

storing attribute information comprising a visual acuity of a user of the image display device as calculated by the image display device based on information determined from vision-correcting lenses of the user;

communicating with an image output device;

transmitting the attribute information to the image output device;

receiving an image converted from the original image by the image output device on a basis of the attribute information; and

displaying the received image on the display unit.

2. The image display device according to claim 1 , wherein

the image display device is used by being worn on a face or head of a viewer who views the image displayed by the display unit.

3. The image display device according to claim 2 , wherein

the display unit includes a display panel configured to display a given image and a virtual image optical unit configured to enlarge and project the given image displayed on the display panel.

4. The image display device according to claim 1 , wherein the instructions, when executed by the processing device, control

receiving second attribute information of an original image;

determining whether a first field of view of the original image indicated in the second attribute information is greater than a second field of view of an image to be displayed by the display unit;

storing information about the second field of view of the image to be displayed by the display unit;

transmitting the information about the second field of view to the image output device; and

receiving the image converted by the image output device on a basis of the second field of view.

5. The image display device according to claim 4 , wherein

the image converted is obtained by converting the original image on a side of the image output device on a basis of a difference between the first field of view of the original image and the second field of view.

6. The image display device according to claim 5 , wherein

when the first field of view is greater than the second field of view, the image display device receives the received image obtained by the image output device cutting out a region of the second field of view from the original image.

7. The image display device according to claim 5 , wherein

when the second field of view is equal to or greater than the first field of view, the image display device receives the original image from the image output device, and displays the original image on the display unit.

8. The image display device according to claim 5 , wherein

the image display device displays a given image received from the image output device on the display unit, on a basis of a relationship between the first field of view and the second field of view.

9. The image display device according to claim 8 , wherein

the first field of view is greater than the second field of view, and the image display device displays an image in which a region of the second field of view has been cut out from the original image on the display unit in fullscreen.

10. The image display device according to claim 8 , wherein

when displaying an image having the first field of view less than the second field of view on the display unit, the image display device fills in a marginal region with black or displays a wallpaper.

11. The image display device according to claim 8 , wherein

the image display device stretches an image having the first field of view less than the second field of view out to the second field of view, and displays the stretched image on the display unit.

12. The image display device according to claim 8 , wherein

when receiving the received image having the first field of view less than the second field of view from the image output device, the image display device displays the received image on the display unit according to a method based on an instruction from a viewer, attribution information about the viewer, or an instruction attached to the original image.

13. An image display method comprising:

controlling, by a processing device,

transmitting attribute information to an image output device, the attribute information comprising a visual acuity of a user of an image display as calculated by the image display based on information determined from vision-correcting lenses of the user;

receiving an image converted from the original image on a basis of the attribute information from the image output device; and

displaying the received image.

14. An image output device comprising:

a processing device and a memory configured to store instructions which, when executed by the processing device, control

communicating with an image display device;

acquiring an original image to provide to the image display device;

receiving attribute information comprising a visual acuity of a user of the image display device as calculated by the image display device based on information determined from vision-correcting lenses of the user;

converting the original image on a basis of the attribute information; and

transmitting the converted image.

15. The image output device according to claim 14 , wherein

the image output device receives information about a second field of view of an image to be displayed by the image display device,

wherein the instructions, when executed by the processing device, control converting the original image on a basis of a difference between a first field of view of the original image and the second field of view.

16. The image output device according to claim 15 , wherein

when the first field of view is greater than the second field of view, the instructions, when executed by the processing device, control cutting out a region of the second field of view from the original image.

17. The image output device according to claim 15 , wherein

when the second field of view is equal to or greater than the first field of view, the instructions, when executed by the processing device, control not performing conversion of the original image based on a difference of field of view.

18. The image output device according to claim 14 , wherein

the image display device stores the attribute information according to Extended Display Identification Data (EDID) or another predetermined data format, and

the instructions, when executed by the processing device, control acquiring the attribute information from the image display device via communication according to a Display Data Channel (DDC) or another predetermined protocol.

19. An image output method comprising:

controlling, by a processing device,

acquiring an original image to provide to an image display device;

receiving attribute information from the image display device, the attribute information comprising a visual acuity of a user of the image display device as calculated by the image display device based on information determined from vision-correcting lenses of the user;

converting the original image on a basis of the attribute information; and

transmitting the converted image to the image display device.

20. An image display system comprising:

an image display device configured to hold attribute information comprising a visual acuity of a user of the image display device as calculated by the image display device; and

an image output device configured to output, to the image display device, an image converted from an original image on a basis of the attribute information acquired from the image display device based on information determined from vision-correcting lenses of the user.