Apparatus, method, and medium for controlling image orientation

• US 20060033760A1
• Filed: 09/09/2004
• Published: 02/16/2006
• Est. Priority Date: 08/16/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Koh, Ho Jin
• Granted Patent: US 7,259,772 B2
• Time in Patent Office: Days
• US Class Current: 345/649
• CPC Class Codes: G06F 2200/1614 Image rotation following screen orientation, e.g. switching from landscape to portrait mode
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 5/363 Graphics controllers

Abstract

An apparatus, method, and medium for controlling image orientation are disclosed. An orientation mode detector measures multi-directional rotational angles of a display panel and determines an orientation mode for original image data based on the measured rotational angles. A system memory stores orientation parameters corresponding to a plurality of image orientation modes. A system controller initially acquires information indicating the orientation mode from the orientation mode detector, and it extracts orientation parameters corresponding to the acquired information from the system memory. Finally, a driver changes an orientation of the original image data according to the extracted orientation parameters.

Claims

1. A method of controlling an orientation of image data in a display system having a display panel, the method comprising:

determining an orientation mode for original image data based on rotational angles of the display panel in multi-directions;

extracting orientation parameters corresponding to the determined orientation mode;

changing an orientation of the original image data according to the extracted orientation parameters and storing the orientation-changed image data in a first memory; and

displaying the stored image data on a display screen.

2. The method of claim 1, wherein the determining an orientation mode for original image data comprises:

(a) rotating, by a user, the display panel in at least one of a first direction and a second direction;

(b) determining whether the display panel is rotated in the first direction;

(c) when the determination in step (b) is true, determining whether a first rotational angle of the display panel in the first direction is 90 degrees;

(d) when the determination in step (c) is true, determining whether the display panel is rotated in the second direction;

(e) when the determination in step (d) is true, determining whether a second rotational angle of the display panel in the second direction is 180 degrees; and

(f) when the determination in step (e) is true, storing an orientation mode of 270 degrees in a second memory.

3. The method of claim 2, wherein the determining an orientation mode for original image data further comprises:

(g) determining whether a request for access to the second memory has been received from an image orientation controller; and

(h) when the request is received, transmitting an acknowledgement to the image orientation controller for authorizing access to the second memory.

4. The method of claim 2, wherein the first direction is about an axis perpendicular to the display panel.

5. The method of claim 4, wherein the second direction is about a horizontal axis.

6. The method of claim 2, wherein the determining an orientation mode for original image data further comprises:

(i) when the determination in step (b) is false, determining whether the display panel is rotated in the second direction;

(j) when the determination in step (i) is true, determining whether the second rotational angle is 180 degrees;

(k) when the determination in step (j) is true, storing an orientation mode of 180 degrees in the second memory.

7. The method of claim 6, wherein the determining an orientation mode for original image data further comprises:

(l) when the determination in step (i) is false, storing an orientation mode of 0 degrees in the second memory.

8. The method of claim 6, wherein the determining an orientation mode for original image data further comprises:

(m) when the determination in step (j) is false, storing an orientation mode of 0 degrees in the second memory.

9. The method of claim 2, wherein the determining an orientation mode for original image data further comprises:

(n) when the determination in step (c) is false, determining whether the first rotational angle is 180 degrees; and

(o) when the determination in step (n) is true, storing an orientation mode of 180 degrees.

10. The method of claim 9, wherein the determining an orientation mode for original image data further comprises:

(p) when the determination in step (n) is false, storing an orientation mode of 0 degrees.

11. The method of claim 2, wherein the determining an orientation mode for original image data further comprises:

(q) when the determination in step (d) is false, storing an orientation mode of 90 degrees in the memory.

12. The method of claim 2, wherein the determining an orientation mode for original image data further comprises:

(r) when the determination in step (e) is false, storing an orientation mode of 0 degrees in the memory.

13. The method of claim 1, wherein the orientation parameters comprise at least one of an image start position, an image end position, and a scanning direction, which correspond to the determined orientation mode.

14. An apparatus of controlling an orientation of image data, the apparatus comprising:

a display panel being rotatable in multi-directions;

an orientation mode detector configured to measure multi-directional rotational angles of the display panel, and to determine an orientation mode for original image data based on the measured rotational angles;

a system memory configured to store orientation parameters corresponding to a plurality of image orientation modes;

a system controller configured to acquire information indicating the determined orientation mode from the orientation mode detector, and to extract orientation parameters corresponding to the acquired information; and

a driver configured to change an orientation of the original image data according to the extracted orientation parameters, wherein the orientation-changed image data is stored in the system memory and is displayed on a display screen.

15. The apparatus of claim 14, wherein the display panel is rotatable about an axis perpendicular to the display panel.

16. The apparatus of claim 15, wherein the display panel is rotatable about a horizontal axis.

17. The apparatus of claim 14, wherein the orientation mode detector comprises:

at least one sensor configured to measure the multi-directional rotational angles of the display panel;

a display controller configured to determine the orientation mode for the original image data based on the measured rotational angles; and

a display memory configured to store the information indicating the determined orientation mode, wherein the display controller sends an acknowledgement to the system controller when a request for access to the display memory is received.

18. The apparatus of claim 17, wherein the at least one sensor comprises any one of a gyroscope sensor, a metal shell sensor, a electrical conduction detection switch, and a mechanical conversion switch.

19. The apparatus of claim 17, wherein the at least one sensor comprises:

a first sensor configured to measure a first rotational angle of the display panel in a first direction about an axis perpendicular to the display panel; and

a second sensor configured to measure a second rotational angle of display panel in a second direction about an horizontal axis.

20. The apparatus of claim 17, wherein the orientation mode for the original image data is any one of 0, 90, 180, and 270 degrees orientation modes.

21. The apparatus of claim 14, wherein the extracted orientation parameters comprise at least one of an image start position, an image end position, and a scanning direction, which correspond to the determined orientation mode.

22. A computer-readable medium storing program code for determining an orientation mode for original image data in a display system, the program code, when executed by a processor, causing the processor to perform the steps of:

(a) rotating, by a user, the display panel in at least one of a first direction and a second direction;

(b) determining whether the display panel is rotated in the first direction;

(c) when the determination in step (b) is true, determining whether a first rotational angle of the display panel in the first direction is 90 degrees;

(d) when the determination in step (c) is true, determining whether the display panel is rotated in the second direction;

(e) when the determination in step (d) is true, determining whether a second rotational angle of the display panel in the second direction is 180 degrees;

(f) when the determination in step (e) is true, storing an orientation mode of 270 degrees in a memory;

(g) determining whether a request for access to the memory has been received from an image orientation controller; and

(h) when the request is made, transmitting an acknowledgement to the image orientation controller for authorizing access to the memory.