APPARATUS AND METHOD FOR DISPLAYING SCREEN

• US 20140063066A1
• Filed: 08/01/2013
• Published: 03/06/2014
• Est. Priority Date: 08/28/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: CHOI, Young-Berm
• Granted Patent: US 9,666,167 B2
• Time in Patent Office: Days
• US Class Current: 345/634
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2340/10 Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels
• CPC Class Codes: G09G 2340/12 Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
• CPC Class Codes: G09G 2340/125 wherein one of the images is motion video
• CPC Class Codes: G09G 5/14 Display of multiple viewports
• CPC Class Codes: G09G 5/37 Details of the operation on graphic patterns G09G5/38 takes precedence
• CPC Class Codes: G09G 5/395 Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen G09G5/399 takes precedence
• CPC Class Codes: G09G 5/397 Arrangements specially adapted for transferring the contents of two or more bit-mapped memories to the screen simultaneously, e.g. for mixing or overlay G09G5/02 takes precedence

Abstract

A method and device which provide and manage an image to be displayed on display screens of a portable device and a separate image output device, when the separate image output device is connected to the portable device is provided. Accordingly, an image frame is generated by excluding a specific surface from image frames to be output in the portable device, to the image output device, or constitutes and provides an image frame including a surface to be displayed on the image output device, to the image output device.

Claims

1. A method of displaying a screen of a portable device having at least one display unit, the method comprising:

detecting generation of a screen-changing event;

determining at least one surface displaying data according to whether the portable device is connected to an external image output device, and allocating a surface property indicating which frame of an internal output image frame and an external output image frame a corresponding surface constitutes, to each surface;

generating at least one surface;

generating the internal output image frames and the external output image frames by combining the at least one surface according to the surface property; and

displaying the internal output image frame on the display unit, and transmitting the external output image frames to the external image output device.

2. The method as claimed in claim 1, wherein the surface property includes an external property indicating an external surface that constitutes the external output image frames, and an internal property indicating an internal surface that constitutes the internal output image frame.

3. The method as claimed in 1, wherein the surface property includes an internal property, a general property and an external property.

4. The method as claimed in claim 3, wherein generating the internal output image frames and the external output image frames comprises:

combining an internal surface and a general surface to generate the internal output image frames when the at least one surface only includes an internal surface having the internal property and a general surface having the general property, when the portable device is connected to the external image output device; and

combining only the general surfaces to generate external output image frames.

5. The method as claimed in claim 3, wherein generating the internal output image frames and the external output image frames comprises:

combining only general surfaces to generate the internal output image frames when the at least one surface only includes an external surface having the external property and a general surface having the general property, when the portable device is connected to the external image output device; and

combining only the external surfaces to generate external output image frames.

6. The method as claimed in claim 3, wherein generating the internal output image frames and the external output image frames comprises:

combining only an internal surface and a general surface to generate the internal output image frames when the at least one surface only includes an external surface having the external property and a general surface having the general property, when the portable device is connected to the external image output device; and

combining only the external surfaces to generate external output image frames.

7. The method as claimed in claim 4, further comprising storing the external output image frames in a form of a file, when there is a request of capturing and storing the external output image frames.

8. The method as claimed in claim 3, wherein the screen-changing event is generated when the portable device is mounted on a docking station connected to the external image output device, and allocating the surface property to each surface comprises:

allocating the general property to a surface which is displayed on the portable device before the portable device is mounted on the docking station; and

allocating the internal property and a highest visual priority to a surface which displays a blank screen.

9. The method as claimed in claim 8, wherein generating the external output image frames further comprises:

generating the external output image frame in a landscape display direction when the portable device is vertically mounted on the docking station.

10. A portable device, comprising:

at least one display unit;

a controller which detects generation of a screen-changing event, determines at least one surface displaying data according to whether the portable device is connected to an external image output device, and allocates a surface property indicating which frame of an internal output image frame and an external output image frame a corresponding surface constitutes, to each surface; and

an image-processing unit which generates at least one surface, combines at least one surface according to the surface property to generate the internal output image frames and the external output image frames, displays the internal output image frames on the display unit, and transmits the external output image frame to the external image output device.

11. The portable device as claimed in claim 10, wherein the surface property includes an external property indicating an external surface that constitutes the external output image frames, and an internal property indicating an internal surface that constitutes the internal output image frame.

12. The portable device as claimed in 10, wherein the surface property includes an internal property, a general property and an external property.

13. The portable device as claimed in claim 12, wherein the image-processing unit combines internal surfaces and general surfaces to generate internal output image frames, and combines only the general surfaces to generate external output image frames, when the at least one surface only includes the internal surfaces having the internal property and the general surfaces having the general property when the portable device is connected to the external image output device.

14. The portable device as claimed in claim 12, wherein the image-processing unit combines only general surfaces to generate the internal output image frames, and combines only the external surfaces to generate the external output image frames, when the at least one surface only includes an external surface having the external property and a general surface having the general property when the portable device is connected to the external image output device.

15. The portable device as claimed in claim 12, wherein the image-processing unit only combines general surfaces and internal surfaces to generate the internal output image frames, and only combines external surfaces to generate the external output image frames, when the at least one surface includes the external surface having the external property, the general surface having the general property, and the internal surface having the internal property when the portable device is connected to the external image output device.

16. The portable device as claimed in claim 13, wherein the external output image frames are stored in a form of a file, when there is a request of capturing and storing the external output image frames.

17. The portable device as claimed in claim 13, wherein the controller detects a generation of the screen-changing event when the portable device is mounted on a docking station connected to the external image output device, allocates the general property to a surface which is displayed on the portable device before the portable device is mounted on the docking station, and allocates the internal property and a highest visual priority to a surface for displaying a blank screen.

18. The portable device as claimed in claim 17, wherein the image-processing unit generates the external output image frames in a landscape display direction, when the portable device is vertically mounted on the docking station.