Display apparatus for vehicle and control method therefor

1. A display apparatus for a vehicle comprising:

a display panel configured to display an image on one surface and to be rolled around a shaft;

a shaft driving unit connected to the shaft and configured to rotate the shaft;

an image processing unit configured to determine a size and a position of an image to be displayed by the display panel based on input image information;

an image output unit configured to output the image to the display panel according to the size and position of the image determined by the image processing unit; and

a driving control unit configured to control the shaft driving unit to adjust an amount of exposure of the display panel according to the size and position of the image to be displayed by the display panel so that an image blank is not generated on an upper end or lower end of the display panel.

2. The display apparatus of claim 1 , wherein, when an aspect ratio of an input image is higher than a maximum aspect ratio of the display panel, the image processing unit determines the size and position of the image so that the image is displayed from the upper end or lower end of the display panel in accordance with a horizontal length of the display panel.

3. The display apparatus of claim 1 , wherein, when an aspect ratio of an input image is lower than a maximum aspect ratio of the display panel, the image processing unit determines the size and position of the image so that the image is displayed at the aspect ratio of the input image in accordance with a vertical length of the display panel.

4. The display apparatus of claim 1 , wherein:

the image to be displayed by the display panel is changed according to a driving state of a vehicle; and

the amount of exposure of the display panel is adjusted in accordance with the changed image.

5. The display apparatus of claim 1 , wherein, when a power source is turned off, the display panel is configured to be retracted into a center fascia, a dashboard, an A-pillar, a B-pillar, a sun visor, an overhead console, a console box, a head lining, a driver's seat, or a passenger's seat of a vehicle.

6. The display apparatus of claim 1 , wherein, when a collision detection unit included in a vehicle detects an impact being applied to the vehicle, the display panel is retracted into a center fascia, a dashboard, an A-pillar, a B-pillar, a sun visor, an overhead console, a console box, a head lining, a driver's seat, or a passenger's seat of the vehicle by the driving control unit which operates in conjunction with the collision detection unit.

7. The display apparatus of claim 1 , wherein the display panel is exposable above or below the shaft.

8. A control method for a display apparatus for a vehicle, comprising:

determining a size and a position of an image to be displayed by a display panel based on image information input to the display panel that is configured to display the image on one surface;

exposing the display panel rolled around a shaft by rotating the shaft by a shaft driving unit connected to the shaft;

adjusting an amount of exposure of the display panel according to the size and position of the image to be displayed by the display panel by controlling the shaft driving unit; and

outputting the image so that an image blank is not generated on an upper end or lower end of the display panel.

9. The control method of claim 8 , wherein the determining of the size and position of the image to be displayed by the display panel includes determining the size and position of the image so that the image is displayed from the upper end or lower end of the display panel in accordance with a horizontal length of the display panel when an aspect ratio of an input image is higher than a maximum aspect ratio of the display panel.

10. The control method of claim 8 , wherein the determining of the size and position of the image to be displayed by the display panel includes determining the size and position of the image so that the image is displayed at an aspect ratio of an input image in accordance with a vertical length of the display panel when the aspect ratio of the input image is lower than a maximum aspect ratio of the display panel.

11. The control method of claim 8 , further comprising: after the outputting of the image so that the image blank is not generated on the upper end or lower end of the display panel,

changing the image to be displayed by the display panel according to a driving state of a vehicle;

determining a size and a position of the image to be displayed by the display panel based on changed image information; and

adjusting the amount of exposure of the display panel according to the size and position of the image to be displayed by the display panel by controlling the shaft driving unit.

12. The control method of claim 8 , further comprising, when a power source of the display panel is turned off, hiding the display panel by retracting the display panel into a center fascia, a dashboard, an A-pillar, a B-pillar, a sun visor, an overhead console, a console box, a head lining, a driver's seat, or a passenger's seat of a vehicle after the outputting of the image so that the image blank is not generated on the upper end or lower end of the display panel.

13. The control method of claim 8 , further comprising, when a collision detection unit included in a vehicle detects an impact being applied to the vehicle, hiding the display panel by retracting the display panel into a center fascia, a dashboard, an A-pillar, a B-pillar, a sun visor, an overhead console, a console box, a head lining, a driver's seat, or a passenger's seat of the vehicle after the outputting of the image so that the image blank is not generated on the upper end or lower end of the display panel.